guli笔记

模块一（讲师管理模块）

后端(准备工作)

准备工作

• 搭建数据库

• 数据库设计搭建

搭建项目

项目结构的搭建

创建父工程

pom类型（父工程）

依赖管理版本和公共依赖

搭建子模块

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <modules>
        <module>service</module>
    </modules>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.2.1.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>org.example</groupId>
    <artifactId>guli</artifactId>
    <packaging>pom</packaging>
    <version>0.0.1-SNAPSHOT</version>
    <name>guli</name>
    <description>Demo project for Spring Boot</description>
 
    <properties>
        <java.version>1.8</java.version>
        <guli.version>0.0.1-SNAPSHOT</guli.version>
        <mybatis-plus.version>3.0.5</mybatis-plus.version>
        <velocity.version>2.0</velocity.version>
        <swagger.version>2.7.0</swagger.version>
        <aliyun.oss.version>2.8.3</aliyun.oss.version>
        <jodatime.version>2.10.1</jodatime.version>
        <poi.version>3.17</poi.version>
        <commons-fileupload.version>1.3.1</commons-fileupload.version>
        <commons-io.version>2.6</commons-io.version>
        <httpclient.version>4.5.1</httpclient.version>
        <jwt.version>0.7.0</jwt.version>
        <aliyun-java-sdk-core.version>4.3.3</aliyun-java-sdk-core.version>
        <aliyun-sdk-oss.version>3.1.0</aliyun-sdk-oss.version>
        <aliyun-java-sdk-vod.version>2.15.2</aliyun-java-sdk-vod.version>
        <aliyun-java-vod-upload.version>1.4.11</aliyun-java-vod-upload.version>
        <aliyun-sdk-vod-upload.version>1.4.11</aliyun-sdk-vod-upload.version>
        <fastjson.version>1.2.28</fastjson.version>
        <gson.version>2.8.2</gson.version>
        <json.version>20170516</json.version>
        <commons-dbutils.version>1.7</commons-dbutils.version>
        <canal.client.version>1.1.0</canal.client.version>
        <docker.image.prefix>zx</docker.image.prefix>
        <cloud-alibaba.version>0.2.2.RELEASE</cloud-alibaba.version>
    </properties>
 
    <dependencyManagement>
        <dependencies>
            <!--Spring Cloud-->
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Hoxton.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
 
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>${cloud-alibaba.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <!--mybatis-plus 持久层-->
            <dependency>
                <groupId>com.baomidou</groupId>
                <artifactId>mybatis-plus-boot-starter</artifactId>
                <version>${mybatis-plus.version}</version>
            </dependency>
 
            <!-- velocity 模板引擎, Mybatis Plus 代码生成器需要 -->
            <dependency>
                <groupId>org.apache.velocity</groupId>
                <artifactId>velocity-engine-core</artifactId>
                <version>${velocity.version}</version>
            </dependency>
 
            <!--swagger-->
            <dependency>
                <groupId>io.springfox</groupId>
                <artifactId>springfox-swagger2</artifactId>
                <version>${swagger.version}</version>
            </dependency>
            <!--swagger ui-->
            <dependency>
                <groupId>io.springfox</groupId>
                <artifactId>springfox-swagger-ui</artifactId>
                <version>${swagger.version}</version>
            </dependency>
 
            <!--aliyunOSS-->
            <dependency>
                <groupId>com.aliyun.oss</groupId>
                <artifactId>aliyun-sdk-oss</artifactId>
                <version>${aliyun.oss.version}</version>
            </dependency>
 
            <!--日期时间工具-->
            <dependency>
                <groupId>joda-time</groupId>
                <artifactId>joda-time</artifactId>
                <version>${jodatime.version}</version>
            </dependency>
 
            <!--xls-->
            <dependency>
                <groupId>org.apache.poi</groupId>
                <artifactId>poi</artifactId>
                <version>${poi.version}</version>
            </dependency>
            <!--xlsx-->
            <dependency>
                <groupId>org.apache.poi</groupId>
                <artifactId>poi-ooxml</artifactId>
                <version>${poi.version}</version>
            </dependency>
 
            <!--文件上传-->
            <dependency>
                <groupId>commons-fileupload</groupId>
                <artifactId>commons-fileupload</artifactId>
                <version>${commons-fileupload.version}</version>
            </dependency>
 
            <!--commons-io-->
            <dependency>
                <groupId>commons-io</groupId>
                <artifactId>commons-io</artifactId>
                <version>${commons-io.version}</version>
            </dependency>
 
            <!--httpclient-->
            <dependency>
                <groupId>org.apache.httpcomponents</groupId>
                <artifactId>httpclient</artifactId>
                <version>${httpclient.version}</version>
            </dependency>
 
            <dependency>
                <groupId>com.google.code.gson</groupId>
                <artifactId>gson</artifactId>
                <version>${gson.version}</version>
            </dependency>
 
            <!-- JWT -->
            <dependency>
                <groupId>io.jsonwebtoken</groupId>
                <artifactId>jjwt</artifactId>
                <version>${jwt.version}</version>
            </dependency>
 
            <!--aliyun-->
            <dependency>
                <groupId>com.aliyun</groupId>
                <artifactId>aliyun-java-sdk-core</artifactId>
                <version>${aliyun-java-sdk-core.version}</version>
            </dependency>
            <dependency>
                <groupId>com.aliyun.oss</groupId>
                <artifactId>aliyun-sdk-oss</artifactId>
                <version>${aliyun-sdk-oss.version}</version>
            </dependency>
            <dependency>
                <groupId>com.aliyun</groupId>
                <artifactId>aliyun-java-sdk-vod</artifactId>
                <version>${aliyun-java-sdk-vod.version}</version>
            </dependency>
            <dependency>
                <groupId>com.aliyun</groupId>
                <artifactId>aliyun-java-vod-upload</artifactId>
                <version>${aliyun-java-vod-upload.version}</version>
            </dependency>
            <dependency>
                <groupId>com.aliyun</groupId>
                <artifactId>aliyun-sdk-vod-upload</artifactId>
                <version>${aliyun-sdk-vod-upload.version}</version>
            </dependency>
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>fastjson</artifactId>
                <version>${fastjson.version}</version>
            </dependency>
            <dependency>
                <groupId>org.json</groupId>
                <artifactId>json</artifactId>
                <version>${json.version}</version>
            </dependency>
 
            <dependency>
                <groupId>commons-dbutils</groupId>
                <artifactId>commons-dbutils</artifactId>
                <version>${commons-dbutils.version}</version>
            </dependency>
 
            <dependency>
                <groupId>com.alibaba.otter</groupId>
                <artifactId>canal.client</artifactId>
                <version>${canal.client.version}</version>
            </dependency>
        </dependencies>
    </dependencyManagement>
 
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
 
</project>
 

搭建servce模块

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>guli</artifactId>
        <groupId>org.example</groupId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>
    <version>1.0.0</version>
    <artifactId>service</artifactId>
    <packaging>pom</packaging>
    <modules>
        <module>service_edu</module>
        <module>service_vod</module>
    </modules>
 
    <dependencies>
 
        <!--<dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-ribbon</artifactId>
        </dependency>-->
 
        <!--hystrix依赖，主要是用  @HystrixCommand -->
        <!--<dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
        </dependency>-->
 
        <!--服务注册-->
        <!-- <dependency>
             <groupId>org.springframework.cloud</groupId>
             <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
         </dependency>-->
        <!--服务调用-->
        <!-- <dependency>
             <groupId>org.springframework.cloud</groupId>
             <artifactId>spring-cloud-starter-openfeign</artifactId>
         </dependency>-->
 
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
 
        <!--mybatis-plus-->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
        </dependency>
 
        <!--mysql-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
 
        <!-- velocity 模板引擎, Mybatis Plus 代码生成器需要 -->
        <dependency>
            <groupId>org.apache.velocity</groupId>
            <artifactId>velocity-engine-core</artifactId>
        </dependency>
 
        <!--swagger-->
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
        </dependency>
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
        </dependency>
 
        <!--lombok用来简化实体类：需要安装lombok插件-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
 
        <!--xls-->
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi</artifactId>
        </dependency>
 
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-ooxml</artifactId>
        </dependency>
 
        <dependency>
            <groupId>commons-fileupload</groupId>
            <artifactId>commons-fileupload</artifactId>
        </dependency>
 
        <!--httpclient-->
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
        </dependency>
        <!--commons-io-->
        <dependency>
            <groupId>commons-io</groupId>
            <artifactId>commons-io</artifactId>
        </dependency>
        <!--gson-->
        <dependency>
            <groupId>com.google.code.gson</groupId>
            <artifactId>gson</artifactId>
        </dependency>
 
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>
    </dependencies>
 
</project>

搭建service_edu模块

注意：springboot2.4.1不支持 velocity-engine-core 2.0

在idle中搭建工程

搭建配置文件

#### application.yml
spring:
  application:
    name: service-edu
    active: dev
####  application-dev.yml
server:
  port: 8001
mybatis-plus:
  configuration:
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
mapper-locations: classpath:com/atguigu/service/*/mapper/*.xml
global-config:
    db-config:
      logic-delete-value: 1
logic-not-delete-value: 0
 

spring:
datasource:
    type: com.zaxxer.hikari.HikariDataSource
driver-class-name: com.mysql.cj.jdbc.Driver
url: jdbc:mysql://localhost:3306/guli?serverTimezone=GMT%2B8
username: root
password: root
hikari:
      connection-test-query: SELECT 1
connection-timeout: 60000
idle-timeout: 500000
max-lifetime: 540000
maximum-pool-size: 12
minimum-idle: 10
pool-name: GuliHikariPool
jackson:
    date-format: yyyy-MM-dd HH:mm:ss
 
time-zone: GMT+8

mp代码生成器

使用代码生成器，生成相关代码，在实际开发中使用较多

        <!-- velocity 模板引擎, Mybatis Plus 代码生成器需要 -->
        <dependency>
            <groupId>org.apache.velocity</groupId>
            <artifactId>velocity-engine-core</artifactId>
        </dependency>

CodeGenertor

package com.guli;
 
import com.baomidou.mybatisplus.annotation.DbType;
import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.generator.AutoGenerator;
import com.baomidou.mybatisplus.generator.config.DataSourceConfig;
import com.baomidou.mybatisplus.generator.config.GlobalConfig;
import com.baomidou.mybatisplus.generator.config.PackageConfig;
import com.baomidou.mybatisplus.generator.config.StrategyConfig;
import com.baomidou.mybatisplus.generator.config.rules.DateType;
import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy;
import org.junit.Test;
 
/**
 * @author
 * @since 2018/12/13
 */
public class CodeGenerator {
 
    @Test
    public void run() {
 
        // 1、创建代码生成器
        AutoGenerator mpg = new AutoGenerator();
 
        // 2、全局配置
        GlobalConfig gc = new GlobalConfig();
        String projectPath = System.getProperty("user.dir");
        // 最好些绝对路径
        gc.setOutputDir("E:\\zouzilu\\Java_code\\guli\\service\\service_edu" + "/src/main/java");
        gc.setAuthor("testjava");
        gc.setOpen(false); //生成后是否打开资源管理器
        gc.setFileOverride(false); //重新生成时文件是否覆盖
        gc.setServiceName("%sService");	//去掉Service接口的首字母I
        gc.setIdType(IdType.ID_WORKER_STR); //主键策略  ID_WORKER Long
        gc.setDateType(DateType.ONLY_DATE);//定义生成的实体类中日期类型
        gc.setSwagger2(true);//开启Swagger2模式
 
        mpg.setGlobalConfig(gc);
 
        // 3、数据源配置
        DataSourceConfig dsc = new DataSourceConfig();
        dsc.setUrl("jdbc:mysql://localhost:3306/guli");
        dsc.setDriverName("com.mysql.jdbc.Driver");
        dsc.setUsername("root");
        dsc.setPassword("root");
        dsc.setDbType(DbType.MYSQL);
        mpg.setDataSource(dsc);
 
        // 4、包配置
        PackageConfig pc = new PackageConfig();
        pc.setModuleName("eduservice"); //模块名
        pc.setParent("com.guli");
        pc.setController("controller");
        pc.setEntity("entity");
        pc.setService("service");
        pc.setMapper("mapper");
        mpg.setPackageInfo(pc);
 
        // 5、策略配置
        StrategyConfig strategy = new StrategyConfig();
        strategy.setInclude("edu_teacher");
        strategy.setNaming(NamingStrategy.underline_to_camel);//数据库表映射到实体的命名策略
        strategy.setTablePrefix(pc.getModuleName() + "_"); //生成实体时去掉表前缀
        strategy.setColumnNaming(NamingStrategy.underline_to_camel);//数据库表字段映射到实体的命名策略
        strategy.setEntityLombokModel(true); // lombok 模型 @Accessors(chain = true) setter链式操作
        strategy.setRestControllerStyle(true); //restful api风格控制器
        strategy.setControllerMappingHyphenStyle(true); //url中驼峰转连字符
        mpg.setStrategy(strategy);
 
        // 6、执行
        mpg.execute();
    }
}
 

出错

The server time zone value '?й???????' is unrecognized or represents more than one time zone

方案1、在项目代码-数据库连接URL后，加上 ?serverTimezone=UTC（注意大小写必须一致）

spring.datasource.url=jdbc:mysql://localhost:3306/guli?serverTimezone=UTC

方案2、在mysql中设置时区，默认为SYSTEM（推荐）
set global time_zone=’+8:00’

mysql> set global time_zone='+8:00';
Query OK, 0 rows affected (0.01 sec)
 

注意：mybatisplus在service层中已经把mapper集成

    @Autowired
    private EduTeacherService teacherService;
    //1.查询讲师表中的所以数据
    //rest风格
    @GetMapping("findAll")
    public List<EduTeacher> findAllTeacher(){
        //调用service的方法
        List<EduTeacher> list = teacherService.list(null);
        return  list;
    }
 

搭建启动类

 
@SpringBootApplication
@MapperScan("com.guli.eduservice.mapper")
public class EduApplication {
   //@SpringBootApplication启动注解
   public static void main(String[] args) {
       SpringApplication.run(EduApplication.class,args);
   }
}
 

在controller层搭建测试代码

package com.guli.eduservice.controller;
 
 
import com.guli.eduservice.entity.EduTeacher;
import com.guli.eduservice.service.EduTeacherService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
 
import org.springframework.web.bind.annotation.RestController;
 
import java.util.List;
 
/**
 * <p>
 * 讲师 前端控制器
 * </p>
 *
 * @author testjava
 * @since 2022-10-08
 */
@RestController
@RequestMapping("/eduservice/teacher")
public class EduTeacherController {
    @Autowired
    private EduTeacherService teacherService;
    //1.查询讲师表中的所以数据
    //rest风格
    @GetMapping("findAll")
    public List<EduTeacher> findAllTeacher(){
        //调用service的方法
        List<EduTeacher> list = teacherService.list(null);
        return  list;
    }
}
 

测试（启动）

发现一个时间问题

#返回的时间格式
spring.jackson.date-format=yyyy-MM-dd HH:mm:ss
spring.jackson.time-zone=GMT+8

讲师逻辑删除（功能）

在删除主键上加注解

@TableLogic  //逻辑删除的注解
@ApiModelProperty(value = "逻辑删除 1（true）已删除， 0（false）未删除")
private Boolean isDeleted;

配置文件加入逻辑删除组件

# 逻辑删除
mybatis-plus.global-config.db-config.logic-delete-value = 1
mybatis-plus.global-config.db-config.logic-not-delete-value = 0

分页查询

设置分页查询的插件

@Configuration
@MapperScan("com.guli.eduservice.mapper")
public class EduConfig {
 
    /**
     * 逻辑删除插件
     */
    @Bean
    public ISqlInjector sqlInjector() {
        return new LogicSqlInjector();
    }
 
    /**
     * 分页插件
     */
    @Bean
    public PaginationInterceptor paginationInterceptor() {
        return new PaginationInterceptor();
    }
}

编写分页查询的代码

@ApiOperation(value = "分页查询")
@GetMapping("pageTeacher/{current}/{limit}")
public Result pageListTeacher( @PathVariable("current") Long current,
                               @PathVariable("limit") Long limit){
    // 构建分页对象
    Page<EduTeacher> page =new Page<>(current,limit);
    //分页查询的方法
   teacherService.page(page,null);
 
    long total = page.getTotal(); //获取总记录数
    List<EduTeacher> list = page.getRecords();//获取当前页的数据
    return Result.ok().data("total",total).data("rows",list);
}

带有条件的分页查询

建立一个对象接受传递的参数

package com.guli.eduservice.entity.vo;
 
import io.swagger.annotations.ApiModelProperty;
import lombok.Data;
 
@Data
public class TeacherQuery {
 
    @ApiModelProperty(value = "教师名称,模糊查询")
    private String name;
 
    @ApiModelProperty(value = "头衔 1高级讲师 2首席讲师")
    private Integer level;
 
    @ApiModelProperty(value = "查询开始时间", example = "2019-01-01 10:10:10")
    private String begin;//注意，这里使用的是String类型，前端传过来的数据无需进行类型转换
 
    @ApiModelProperty(value = "查询结束时间", example = "2019-12-01 10:10:10")
    private String end;
}
 

具体的条件分页代码

 @ApiOperation(value = "分页查询带参数")
    @PostMapping("pageTeacherCondition/{current}/{limit}")
    public Result pageTeacherCondition(@PathVariable("current") Long current,
                                       @PathVariable("limit") Long limit,
                                       @RequestBody(required = false)  TeacherQuery teacherQuery){
        // 构建分页对象
        Page<EduTeacher> page =new Page<>(current,limit);
        // 构建条件
        QueryWrapper<EduTeacher> queryWrapper =new QueryWrapper<>();
        //动态sql
        // 判断条件值是否为空
        String name = teacherQuery.getName();
        Integer level = teacherQuery.getLevel();
        String begin = teacherQuery.getBegin();
        String end = teacherQuery.getEnd();
        if(!StringUtils.isEmpty(name)){
            queryWrapper.like("name",name);
        }
        if(!StringUtils.isEmpty(level)){
            queryWrapper.eq("level",level);
        }
        if(!StringUtils.isEmpty(begin)){
            queryWrapper.ge("gmt_create",begin);
        }
        if(!StringUtils.isEmpty(end)){
            queryWrapper.le("gmt_modified",end);
        }
        //分页查询的方法
        teacherService.page(page,queryWrapper);
 
        long total = page.getTotal(); //获取总记录数
        List<EduTeacher> list = page.getRecords();//获取当前页的数据
        return Result.ok().data("total",total).data("rows",list);
    }
 
 

添加用户

自动添加相关数据

添加自动添加配置

@Component
public class MyMetaObjectHandler implements MetaObjectHandler {
    @Override
    public void insertFill(MetaObject metaObject) {
        //属性名称，不是字段名称
        this.setFieldValByName("gmtCreate", new Date(), metaObject);
        this.setFieldValByName("gmtModified", new Date(), metaObject);
    }
 
    @Override
    public void updateFill(MetaObject metaObject) {
        this.setFieldValByName("gmtModified", new Date(), metaObject);
    }
}

代码

/**
     * 添加用户
     * @param eduTeacher
     * @return
     */
    @ApiOperation(value = "添加教师")
    @PostMapping("addTeacher")
    public Result addTeacher(@RequestBody EduTeacher eduTeacher){
        boolean save = teacherService.save(eduTeacher);
        if(save){
            return Result.ok();
        }else {
            return  Result.error();
        }
    }

修改教师

  /**
     * 根据id查询
     * @param id
     * @return
     */
    @ApiOperation(value = "根据讲师id进行查询")
    @GetMapping("getTeacher/{id}")
    public Result getTeacher(@PathVariable String id) {
        EduTeacher eduTeacher = teacherService.getById(id);
        return Result.ok().data("teacher",eduTeacher);
    }
 
    /**
     * 讲师修改功能
     * @param eduTeacher
     * @return
     */
    @ApiOperation(value = "讲师修改功能")
    @PostMapping("updateTeacher")
    public Result updateTeacher(@RequestBody EduTeacher eduTeacher) {
        boolean flag = teacherService.updateById(eduTeacher);
        if(flag) {
            return Result.ok();
        } else {
            return Result.error();
        }
    }
 

Common模块（公共模块）

common模块中放置所以模块所需要的共同代码

注意！！！

在其他模块中导入时，扫描相关的配置类加入，在启动类中加入

@ComponentScan(basePackages = {"com.guli(包)"}) //加入扫描规则

加入配置后只要导入其他模块中含有包名就扫描到本模块中

Swagger整合在common模块中

公共模块Common的 Pom.xm l配置

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>guli</artifactId>
        <groupId>org.example</groupId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <modules>
        <module>service_base</module>
    </modules>
    <modelVersion>4.0.0</modelVersion>
    <artifactId>common</artifactId>
    <packaging>pom</packaging>
    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <scope>provided </scope>
        </dependency>
 
        <!--mybatis-plus-->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <scope>provided </scope>
        </dependency>
 
        <!--lombok用来简化实体类：需要安装lombok插件-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <scope>provided </scope>
        </dependency>
 
        <!--swagger-->
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <scope>provided </scope>
        </dependency>
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
            <scope>provided </scope>
        </dependency>
 
        <!-- redis -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>
 
        <!-- spring2.X集成redis所需common-pool2
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-pool2</artifactId>
            <version>2.6.0</version>
        </dependency>-->
    </dependencies>
 
</project>

SwaggerConfig

配置swagger插件

package com.atguigu.servicebase;
 
import com.google.common.base.Predicates;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.service.Contact;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;
 
@Configuration//配置类
@EnableSwagger2 //swagger注解
public class SwaggerConfig {
 
    @Bean
    public Docket webApiConfig(){
        return new Docket(DocumentationType.SWAGGER_2)
                .groupName("webApi")
                .apiInfo(webApiInfo())
                .select()
                .paths(Predicates.not(PathSelectors.regex("/admin/.*")))
                .paths(Predicates.not(PathSelectors.regex("/error.*")))
                .build();
 
    }
 
    private ApiInfo webApiInfo(){
 
        return new ApiInfoBuilder()
                .title("网站-课程中心API文档")
                .description("本文档描述了课程中心微服务接口定义")
                .version("1.0")
                .contact(new Contact("java", "http://atguigu.com", "1123@qq.com"))
                .build();
    }
}
 

swagger的基本使用规则

1. 在controller类中加入注解

   @Api(description = "讲师管理")   //

2. 在方法上加上注解

   @ApiOperation(value = "所以讲师列表")
   @GetMapping("findAll")
   public List<EduTeacher> findAllTeacher(){
       //调用service的方法
       List<EduTeacher> list = teacherService.list(null);
       return  list;
   }

3. 在参数上加上注解

@ApiOperation(value = "逻辑删除表")
@DeleteMapping("{id}")
public boolean removeTeacher(@ApiParam(name = "id",value = "讲师Id",required = true) @PathVariable("id") String id){
    return teacherService.removeById(id);
}

统一管理返回对象

建立模块common_utils

创建interface定义数据的返回状态码

public interface ResultCode {
    public static Integer SUCCESS = 20000; //成功
    public static Integer ERROR = 200001; //失败
}

创建返回对象

package com.guli.commonutils;
import io.swagger.annotations.ApiModelProperty;
import lombok.Data;
import java.util.HashMap;
import java.util.Map;
 
//统一返回结果的类
@Data
public class R {
 
    @ApiModelProperty(value = "是否成功")
    private Boolean success;
 
    @ApiModelProperty(value = "返回码")
    private Integer code;
 
    @ApiModelProperty(value = "返回消息")
    private String message;
 
    @ApiModelProperty(value = "返回数据")
    private Map<String, Object> data = new HashMap<String, Object>();
 
    //把构造方法私有
    private R() {
    }
 
    //成功静态方法
    public static R ok() {
        R r = new R();
        r.setSuccess(true);
        r.setCode(ResultCode.SUCCESS);
        r.setMessage("成功");
        return r;
    }
 
    //失败静态方法
    public static R error() {
        R r = new R();
        r.setSuccess(false);
        r.setCode(ResultCode.ERROR);
        r.setMessage("失败");
        return r;
    }
 
    public R success(Boolean success) {
        this.setSuccess(success);
        return this;
    }
 
    public R message(String message) {
        this.setMessage(message);
        return this;
    }
 
    public R code(Integer code) {
        this.setCode(code);
        return this;
    }
 
    public R data(String key, Object value) {
        this.data.put(key, value);
        return this;
    }
 
    public R data(Map<String, Object> map) {
        this.setData(map);
        return this;
    }
}

在service模块中到日

<dependency>
    <groupId>org.example</groupId>
    <artifactId>common_utils</artifactId>
    <version>0.0.1-SNAPSHOT</version>
</dependency>

例子：

 /***
     * 查询所有教师
     * @return
     */
    @ApiOperation(value = "所以讲师列表")
    @GetMapping("findAll")
    public R findAllTeacher(){
        //调用service的方法
        List<EduTeacher> list = teacherService.list(null);
        return R.ok().data("items",list);
    }
 
    /**
     * 逻辑删除的方法
     * @return
     */
    @ApiOperation(value = "逻辑删除表")
    @DeleteMapping("{id}")
    public R removeTeacher(@ApiParam(name = "id",value = "讲师Id",required = true) @PathVariable("id") String id){
        boolean flag =  teacherService.removeById(id);
        if(flag){
            return R.ok();
        }else {
            return R.error();
        }
    }
 

统一配置异常处理

首先，@ControllerAdvice本质上是一个@Component，因此也会被当成组建扫描。

全局异常处理

@ControllerAdvice
public class GlobalExceptionHandler {
 
    //指定出现什么异常执行这个方法
    @ExceptionHandler(Exception.class)
    @ResponseBody //为了返回数据
    public Result error(Exception e) {
        e.printStackTrace();
        return Result.error().message("执行了全局异常处理..");
    }
}
 

特定异常

    //特定异常
    @ExceptionHandler(ArithmeticException.class)
    @ResponseBody //为了返回数据
    public Result error(ArithmeticException e) {
        e.printStackTrace();
        return Result.error().message("执行了全局异常处理..");
    }
}

自定义异常

// 创建自己的异常类
// 自定义异常需要自己手动抛出

同一日志处理

打印佛主

banner.txt在配置文件的同级目录下

//                            _ooOoo_
//                           o8888888o
//                           88" . "88
//                           (| -_- |)
//                            O\ = /O
//                        ____/`---'\____
//                      .   ' \\| |// `.
//                       / \\||| : |||// \
//                     / _||||| -:- |||||- \
//                       | | \\\ - /// | |
//                     | \_| ''\---/'' | |
//                      \ .-\__ `-` ___/-. /
//                   ___`. .' /--.--\ `. . __
//                ."" '< `.___\_<|>_/___.' >'"".
//               | | : `- \`.;`\ _ /`;.`/ - ` : | |
//                 \ \ `-. \_ __\ /__ _/ .-` / /
//         ======`-.____`-.___\_____/___.-`____.-'======
//                            `=---='
//         .............................................
//                  佛祖镇楼                  BUG辟易
//          佛曰:
//                  写字楼里写字间，写字间里程序员；
//                  程序人员写程序，又拿程序换酒钱。
//                  酒醒只在网上坐，酒醉还来网下眠；
//                  酒醉酒醒日复日，网上网下年复年。
//                  但愿老死电脑间，不愿鞠躬老板前；
//                  奔驰宝马贵者趣，公交自行程序员。
//                  别人笑我忒疯癫，我笑自己命太贱；
//                  不见满街漂亮妹，哪个归得程序员？

logback-spring.xml

<?xml version="1.0" encoding="UTF-8"?>
<configuration  scan="true" scanPeriod="10 seconds">
    <!-- 日志级别从低到高分为TRACE < DEBUG < INFO < WARN < ERROR < FATAL，如果设置为WARN，则低于WARN的信息都不会输出 -->
    <!-- scan:当此属性设置为true时，配置文件如果发生改变，将会被重新加载，默认值为true -->
    <!-- scanPeriod:设置监测配置文件是否有修改的时间间隔，如果没有给出时间单位，默认单位是毫秒。当scan为true时，此属性生效。默认的时间间隔为1分钟。 -->
    <!-- debug:当此属性设置为true时，将打印出logback内部日志信息，实时查看logback运行状态。默认值为false。 -->
 
    <contextName>logback</contextName>
    <!-- name的值是变量的名称，value的值时变量定义的值。通过定义的值会被插入到logger上下文中。定义变量后，可以使“${}”来使用变量。 -->
    <property name="log.path" value="E:/zouzilu/Project/logback_data" />
 
    <!-- 彩色日志 -->
    <!-- 配置格式变量：CONSOLE_LOG_PATTERN 彩色日志格式 -->
    <!-- magenta:洋红 -->
    <!-- boldMagenta:粗红-->
    <!-- cyan:青色 -->
    <!-- white:白色 -->
    <!-- magenta:洋红 -->
    <property name="CONSOLE_LOG_PATTERN"
              value="%yellow(%date{yyyy-MM-dd HH:mm:ss}) |%highlight(%-5level) |%blue(%thread) |%blue(%file:%line) |%green(%logger) |%cyan(%msg%n)"/>
 
 
    <!--输出到控制台-->
    <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
        <!--此日志appender是为开发使用，只配置最底级别，控制台输出的日志级别是大于或等于此级别的日志信息-->
        <!-- 例如：如果此处配置了INFO级别，则后面其他位置即使配置了DEBUG级别的日志，也不会被输出 -->
        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>INFO</level>
        </filter>
        <encoder>
            <Pattern>${CONSOLE_LOG_PATTERN}</Pattern>
            <!-- 设置字符集 -->
            <charset>UTF-8</charset>
        </encoder>
    </appender>
 
 
    <!--输出到文件-->
 
    <!-- 时间滚动输出 level为 INFO 日志 -->
    <appender name="INFO_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <!-- 正在记录的日志文件的路径及文件名 -->
        <file>${log.path}/log_info.log</file>
        <!--日志文件输出格式-->
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
            <charset>UTF-8</charset>
        </encoder>
        <!-- 日志记录器的滚动策略，按日期，按大小记录 -->
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <!-- 每天日志归档路径以及格式 -->
            <fileNamePattern>${log.path}/info/log-info-%d{yyyy-MM-dd}.%i.log</fileNamePattern>
            <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>100MB</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
            <!--日志文件保留天数-->
            <maxHistory>15</maxHistory>
        </rollingPolicy>
        <!-- 此日志文件只记录info级别的 -->
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>INFO</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
    </appender>
 
    <!-- 时间滚动输出 level为 WARN 日志 -->
    <appender name="WARN_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <!-- 正在记录的日志文件的路径及文件名 -->
        <file>${log.path}/log_warn.log</file>
        <!--日志文件输出格式-->
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
            <charset>UTF-8</charset> <!-- 此处设置字符集 -->
        </encoder>
        <!-- 日志记录器的滚动策略，按日期，按大小记录 -->
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${log.path}/warn/log-warn-%d{yyyy-MM-dd}.%i.log</fileNamePattern>
            <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>100MB</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
            <!--日志文件保留天数-->
            <maxHistory>15</maxHistory>
        </rollingPolicy>
        <!-- 此日志文件只记录warn级别的 -->
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>warn</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
    </appender>
 
 
    <!-- 时间滚动输出 level为 ERROR 日志 -->
    <appender name="ERROR_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <!-- 正在记录的日志文件的路径及文件名 -->
        <file>${log.path}/log_error.log</file>
        <!--日志文件输出格式-->
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
            <charset>UTF-8</charset> <!-- 此处设置字符集 -->
        </encoder>
        <!-- 日志记录器的滚动策略，按日期，按大小记录 -->
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${log.path}/error/log-error-%d{yyyy-MM-dd}.%i.log</fileNamePattern>
            <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>100MB</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
            <!--日志文件保留天数-->
            <maxHistory>15</maxHistory>
        </rollingPolicy>
        <!-- 此日志文件只记录ERROR级别的 -->
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>ERROR</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
    </appender>
 
    <!--
        <logger>用来设置某一个包或者具体的某一个类的日志打印级别、以及指定<appender>。
        <logger>仅有一个name属性，
        一个可选的level和一个可选的addtivity属性。
        name:用来指定受此logger约束的某一个包或者具体的某一个类。
        level:用来设置打印级别，大小写无关：TRACE, DEBUG, INFO, WARN, ERROR, ALL 和 OFF，
              如果未设置此属性，那么当前logger将会继承上级的级别。
    -->
    <!--
        使用mybatis的时候，sql语句是debug下才会打印，而这里我们只配置了info，所以想要查看sql语句的话，有以下两种操作：
        第一种把<root level="INFO">改成<root level="DEBUG">这样就会打印sql，不过这样日志那边会出现很多其他消息
        第二种就是单独给mapper下目录配置DEBUG模式，代码如下，这样配置sql语句会打印，其他还是正常DEBUG级别：
     -->
    <!--开发环境:打印控制台-->
    <springProfile name="dev">
        <!--可以输出项目中的debug日志，包括mybatis的sql日志-->
        <logger name="com.guli" level="INFO" />
 
        <!--
            root节点是必选节点，用来指定最基础的日志输出级别，只有一个level属性
            level:用来设置打印级别，大小写无关：TRACE, DEBUG, INFO, WARN, ERROR, ALL 和 OFF，默认是DEBUG
            可以包含零个或多个appender元素。
        -->
        <root level="INFO">
            <appender-ref ref="CONSOLE" />
            <appender-ref ref="INFO_FILE" />
            <appender-ref ref="WARN_FILE" />
            <appender-ref ref="ERROR_FILE" />
        </root>
    </springProfile>
 
 
    <!--生产环境:输出到文件-->
    <springProfile name="pro">
 
        <root level="INFO">
            <appender-ref ref="CONSOLE" />
            <appender-ref ref="DEBUG_FILE" />
            <appender-ref ref="INFO_FILE" />
            <appender-ref ref="ERROR_FILE" />
            <appender-ref ref="WARN_FILE" />
        </root>
    </springProfile>
 
</configuration>

后台系统登录

管理员登录

登录时返回两个方法

• Login方法返回token

  • 开发接口

     //login
      @PostMapping("login")
      public  Result login(){
          return Result.ok().data("token","admin");
      }

• info方法返回数据

  ​ 数据格式:

    //info
    @GetMapping("info")
    public  Result info(){
        return Result.ok().data("roles","[admin]").data("name","admin").data("avator","https://profile-avatar.csdnimg.cn/eb6bb064352748f3a18cfb856a7ab860_weixin_44037376.jpg!3");
    }
 

跨域问题的解决CORS

方法一:加注解

	@CrossOrigin //解决跨域问题

方法二:网关解决

方法三:springMvc的配置文件

前端模块搭建

• 后台管理系统
  • 后端接口
  • 后台页面
• 前台用户系统

前段页面框架说明

---

前段入口

main.js 
 
APP.vue

包含的框架

基于 Vue + elementUI

目录说明

build:

​ 项目编译所在的目录

​

config目录:

修改 index.js 中修改eslint改为false

   // Use Eslint Loader?
    // If true, your code will be linted during bundling and
    // linting errors and warnings will be shown in the console.
    useEslint: false,  //修改eslint
    // If true, eslint errors and warnings will also be shown in the error overlay
    // in the browser.
    showEslintErrorsInOverlay: false,
 
    /**

dev.env.js:修改访问后端的接口地址

​ 修改访问后端的接口地址

---

搭建项目前段的页面环境

packag.config.js

{
  "name": "vue-admin-template",
  "version": "3.8.0",
  "license": "MIT",
  "description": "A vue admin template with Element UI & axios & iconfont & permission control & lint",
  "author": "Pan <panfree23@gmail.com>",
  "scripts": {
    "dev": "webpack-dev-server --inline --progress --config build/webpack.dev.conf.js",
    "start": "npm run dev",
    "build": "node build/build.js",
    "build:report": "npm_config_report=true npm run build",
    "lint": "eslint --ext .js,.vue src",
    "test": "npm run lint",
    "svgo": "svgo -f src/icons/svg --config=src/icons/svgo.yml"
  },
  "dependencies": {
    "axios": "0.18.0",
    "element-ui": "2.4.6",
    "js-cookie": "2.2.0",
    "normalize.css": "7.0.0",
    "nprogress": "0.2.0",
    "vue": "2.5.17",
    "vue-router": "3.0.1",
    "vuex": "3.0.1"
  },
  "devDependencies": {
    "autoprefixer": "8.5.0",
    "babel-core": "6.26.0",
    "babel-eslint": "8.2.6",
    "babel-helper-vue-jsx-merge-props": "2.0.3",
    "babel-loader": "7.1.5",
    "babel-plugin-syntax-jsx": "6.18.0",
    "babel-plugin-transform-runtime": "6.23.0",
    "babel-plugin-transform-vue-jsx": "3.7.0",
    "babel-preset-env": "1.7.0",
    "babel-preset-stage-2": "6.24.1",
    "chalk": "2.4.1",
    "copy-webpack-plugin": "4.5.2",
    "css-loader": "1.0.0",
    "eslint": "4.19.1",
    "eslint-friendly-formatter": "4.0.1",
    "eslint-loader": "2.0.0",
    "eslint-plugin-vue": "4.7.1",
    "eventsource-polyfill": "0.9.6",
    "file-loader": "1.1.11",
    "friendly-errors-webpack-plugin": "1.7.0",
    "html-webpack-plugin": "4.0.0-alpha",
    "mini-css-extract-plugin": "0.4.1",
    "node-notifier": "5.2.1",
    "node-sass": "^4.7.2",
    "optimize-css-assets-webpack-plugin": "5.0.0",
    "ora": "3.0.0",
    "path-to-regexp": "2.4.0",
    "portfinder": "1.0.16",
    "postcss-import": "12.0.0",
    "postcss-loader": "2.1.6",
    "postcss-url": "7.3.2",
    "rimraf": "2.6.2",
    "sass-loader": "7.0.3",
    "script-ext-html-webpack-plugin": "2.0.1",
    "semver": "5.5.0",
    "shelljs": "0.8.2",
    "svg-sprite-loader": "3.8.0",
    "svgo": "1.0.5",
    "uglifyjs-webpack-plugin": "1.2.7",
    "url-loader": "1.0.1",
    "vue-loader": "15.3.0",
    "vue-style-loader": "4.1.2",
    "vue-template-compiler": "2.5.17",
    "webpack": "4.16.5",
    "webpack-bundle-analyzer": "2.13.1",
    "webpack-cli": "3.1.0",
    "webpack-dev-server": "3.1.5",
    "webpack-merge": "4.1.4"
  },
  "engines": {
    "node": ">= 6.0.0",
    "npm": ">= 3.0.0"
  },
  "browserslist": [
    "> 1%",
    "last 2 versions",
    "not ie <= 8"
  ]
}
 

下载module包

npm install 

运行项目

npm run dev

前端开发过程

讲师列表前端

1 添加路由

 //讲师列表模块
  {
    path: '/teacher',
    component: Layout,
    redirect: '/teacher/table',
    name: '讲师管理',
    meta: { title: '讲师管理', icon: 'example' },
    children: [
      {
        path: 'table',
        name: '讲师列表',
        component: () => import('@/views/edu/teacher/list'),
        meta: { title: '讲师列表', icon: 'table' }
      },
      {
        path: 'save',
        name: '添加讲师',
        component: () => import('@/views/edu/teacher/save'),
        meta: { title: '添加讲师', icon: 'tree' }
      }
    ]
  },

2 添加相应的Vue页面

<template>
     <div class="app-container">
    <!--查询表单-->
    <el-form :inline="true" class="demo-form-inline">
      <el-form-item>
        <el-input v-model="teacherQuery.name" placeholder="讲师名"/>
      </el-form-item>
 
      <el-form-item>
        <el-select v-model="teacherQuery.level" clearable placeholder="讲师头衔">
          <el-option :value="1" label="高级讲师"/>
          <el-option :value="2" label="首席讲师"/>
        </el-select>
      </el-form-item>
 
      <el-form-item label="添加时间">
        <el-date-picker
          v-model="teacherQuery.begin"
          type="datetime"
          placeholder="选择开始时间"
          value-format="yyyy-MM-dd HH:mm:ss"
          default-time="00:00:00"
        />
      </el-form-item>
      <el-form-item>
        <el-date-picker
          v-model="teacherQuery.end"
          type="datetime"
          placeholder="选择截止时间"
          value-format="yyyy-MM-dd HH:mm:ss"
          default-time="00:00:00"
        />
      </el-form-item>
 
      <el-button type="primary" icon="el-icon-search" @click="getList()">查询</el-button>
      <el-button type="default" @click="resetData()">清空</el-button>
    </el-form>
 
    <!-- 表格 -->
    <el-table
      :data="list"
      border
      fit
      highlight-current-row>
      <el-table-column
        label="序号"
        width="70"
        align="center">
        <template slot-scope="scope">
          {{ (page - 1) * limit + scope.$index + 1 }}
        </template>
      </el-table-column>
 
      <el-table-column prop="name" label="名称" width="80" />
 
      <el-table-column label="头衔" width="80">
        <template slot-scope="scope">
          {{ scope.row.level===1?'高级讲师':'首席讲师' }}
        </template>
      </el-table-column>
 
      <el-table-column prop="intro" label="资历" />
 
      <el-table-column prop="gmtCreate" label="添加时间" width="160"/>
 
      <el-table-column prop="sort" label="排序" width="60" />
 
      <el-table-column label="操作" width="200" align="center">
        <template slot-scope="scope">
          <router-link :to="'/edu/teacher/edit/'+scope.row.id">
            <el-button type="primary" size="mini" icon="el-icon-edit">修改</el-button>
          </router-link>
          <el-button type="danger" size="mini" icon="el-icon-delete" @click="removeDataById(scope.row.id)">删除</el-button>
        </template>
      </el-table-column>
    </el-table>
 
  <!-- 分页 -->
    <el-pagination
      :current-page="page"
      :page-size="limit"
      :total="total"
      style="padding: 30px 0; text-align: center;"
      layout="total, prev, pager, next, jumper"
      next-text="下一页"
      prev-text="上一页"
        >
    </el-pagination>
  <!-- <div class="block">
  <span class="demonstration">显示总数</span>
    <el-pagination
      :current-page="page"
      :page-size="limit"
      :total="total"
      style="padding: 30px 0; text-align: center;"
      layout="total, prev, pager, next, jumper"
      @current-change="getList"
    />
  </div> -->
  </div>
 

3 在api中添加相应的方法

import request from '@/utils/request'
export default{
    // 1.讲师列表(分页查询)
    getTeacherListPage(current,limit,teacherQuery){
        return request({
            url:`/eduservice/teacher/pageTeacherCondition/${current}/${limit}`,
            method:'post',
            //data表示将对象转换为json传递
            //params表示get{}
            data:teacherQuery
        })
 
    }
 
}

4 在Vue页面中添加相应的api与数据,实现功能

</template>
 
<script>
import teacher from '@/api/edu/teacher/teacher'
export default {
    // 写核心代码
    data(){
        //定义当前变量和初始值
        return{
            list:null,  //查询之后的返回的集合数据
            page:1,     //当前页
            limit:8,   //每页限制
            total:0,    //总记录数
            teacherQuery:{}
 
        }
    },
    created(){
        //页面渲染之前执行
        this.getList()
 
    },
    methods: {
        //具体的方法
 
        //查询并分页
        getList (page=1){
           this.page = page
            teacher.getTeacherListPage(this.page,this.limit,this.teacherQuery)
                .then( //请求成功                   
                    response=>{
                    this.list = response.data.rows
                    this.total = response.data.total
                    }
                ) 
                .catch(
                    error=>{
                        console.log(error)
                    }
                ) //请求失败
        },
 
        //清空列表
        resetData(){
            this.teacherQuery = {}
            this.getList()
        },
        /**
         * 
         * {
            this.$confirm('此操作将永久删除讲师记录, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }
         */
        //删除
        removeDataById(id){          
          //提示信息
          //删除成功 加上提示信息
          this.$confirm('此操作将永久删除讲师记录, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
          }).then(
            //点击确认执行then方法            
            ()=>{            
              teacher.remove(id)
              .then(response=>{
                //删除成功        
                //提示信息
                  this.$message({
                  type:'success',
                  message:'删除成功!'
                });
               //回到列表页面
              this.getList()
              })     
            })
            //点击取消执行catch方法
            .catch(
              // ()=>{
              //     this.$message({
              //     type:'info',
              //     message:'已经取消'
              //   })
              // }
  
            ) 
          }
    },
}
</script>
 
<style>
 
</style>

添加讲师

<template>
  <div class="app-container">    
     <el-form label-width="120px">
      <el-form-item label="讲师名称">
        <el-input v-model="teacher.name"/>
      </el-form-item>
      <el-form-item label="讲师排序">
        <el-input-number v-model="teacher.sort" controls-position="right" min="0"/>
      </el-form-item>
      <el-form-item label="讲师头衔">
        <el-select v-model="teacher.level" clearable placeholder="请选择">
          <el-option :value="1" label="高级讲师"/>
          <el-option :value="2" label="首席讲师"/>
        </el-select>
      </el-form-item>
      <el-form-item label="讲师资历">
        <el-input v-model="teacher.career"/>
      </el-form-item>
      <el-form-item label="讲师简介">
        <el-input v-model="teacher.intro" :rows="10" type="textarea"/>
      </el-form-item>
      <!-- 讲师头像：TODO -->
      <el-form-item>
        <el-button :disabled="saveBtnDisabled" type="primary" @click="saveOrUpdate">保存</el-button>
      </el-form-item>
    </el-form>
 
  </div>
</template>
 
<script>
import teacher from '@/api/edu/teacher/teacher'
export default {
  name:"save",
    //数据
    data(){
      return{
        teacher:{
            name: '',
            sort: 0,
            level: 1,
            career: '',
            intro: '',
            avatar: ''
        },
      }
    },
    //事件
    methods:{
      saveOrUpdate(){
        console.log(this.teacher)
      }
    },
    created(){
 
    }
}
</script>
 
<style>
 
</style>

    
    // 3. 添加讲师
    addTeacher(teacher){
        return request({
            url:`/eduservice/teacher/addTeacher`,
            method:'post',
            data:teacher
        })
    }

修改讲师

修改路由(hidden :隐藏路由)

  {
        path: 'edit/:id',  //相当于 id = ? 传参占位符
        name: '修改讲师',
        component: () => import('@/views/edu/teacher/save'),
        meta: { title: '修改讲师', noCache: true }, //隐藏路由
        hidden: true
      }

 <router-link :to="'/teacher/edit/'+scope.row.id">
     		<!--传参在路由跳转中-->
            <el-button type="primary" size="mini" icon="el-icon-edit" >修改</el-button>
 </router-link>

在api中

  // 通过ID获取老师
    getTeacherById(id){
        return request({
            url:`/eduservice/teacher/getTeacher/${id}`,
            method:'get',
        })
    },
    // 修改老师
    updateTeacherInfo(teacher){
        return request({
            url:`/eduservice/teacher/updateTeacher`,
            method:'post',
            data: teacher
        })
    }

在save.js中

<script>
import teacherApi from '@/api/edu/teacher/teacher'
export default {
  name:"save",
    //数据
    data() {
      return {
        teacher:{
          name: '',
          sort: 0,
          level: 1,
          career: '',
          intro: '',
          avatar: ''
        },
        saveBtnDisabled:false  // 保存按钮是否禁用,
      }
  },
  //页面渲染之前执行
  created() {
    if(this.$route.params && this.$route.params.id){
      //从路径中获取id值
      const id =this.$route.params.id
      this.getInfo(id)
    }
  },
  methods:{
    //保存或者更新
    //判断是修改还是添加
    saveOrUpdate() {
      if(!this.teacher.id){
        //添加
         this.saveTeacher()
      }
      else{
        //修改
         this.updateTeacher()
      }
   
    },
    //保存讲师
    saveTeacher(){
      teacherApi.addTeacher(this.teacher)
        .then(
          response => {
                  this.$message({
                  type:'success',
                  message:'添加成功!' });
                  //回到列表页面 路由跳转
                  this.$router.push({path:'/teacher/table'})        
         })
    },
    //根据讲师id获取讲师
    getInfo(id){
      teacherApi.getTeacherById(id)
      .then(
        response =>{
          this.teacher = response.data.teacher
        }
      )
      .catch()
    }
    ,
    //修改老师
    updateTeacher(){
      teacherApi.updateTeacherInfo(this.teacher).then(
          response=>{
            this.$message({
              type:'success',
              message:'修改成功!'
            })
          },
          this.$router.push({path:'/teacher/table'})
      ).catch()
    }
  }
}
</script>

存在的bug

先修改后点击添加,数据还存在在页面中

应该清空数据

!! 多次路由跳转到同一个页面,create自会执行第一次

解决思路:

使用监听方法 watch

 watch:{
    //当路由发生变化时执行下面代码
    $route(to,from) {
      //路径中不存在id值
      //组件会存在复用 两次路由到同一个页面
      clearData()
    }  
 }