spring boot纯注解开发模板

简介

• spring boot纯注解开发模板

• 创建项目
  
  

• pom.xml导入所需依赖

点击查看源码

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.1.4</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>
 
    <build>
        <plugins>
            <!-- 自动打包-->
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <excludes>
                        <exclude>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                        </exclude>
                    </excludes>
                </configuration>
            </plugin>
            <!-- maven编译 -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-resources-plugin</artifactId>
                <version>3.1.0</version>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-plugin</artifactId>
                <version>2.22.1</version>
                <configuration>
                    <skipTests>true</skipTests>
                </configuration>
            </plugin>
        </plugins>
    </build>
 

• 将application文件的后缀改为yml，配置服务器端口和数据库连接池、视图解析、驼峰命名自动映射、日志记录

点击查看源码

# 端口
server:
  port: 8080
 
# 配置数据源
spring:
  application:
    name: springboot01   # 项目名
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://localhost:3306/springboot?characterEncoding=utf-8&serverTimezone=UTC
    username: root
    password: root
  mvc: # 视图解析
    view:
      suffix: ".html"
 
# 开启驼峰命名自动映射
mybatis:
  configuration:
    map-underscore-to-camel-case: true
 
# 配置日志记录
logging:
  level:
    com:
      chnq:
        springboot01: debug
 

• 启动类：Springboot01Application
• 控制层新建一个RouterController测试路由跳转

点击查看源码

@Controller
public class RouterController {
    /**
     * 转发到 /login路由
     */
    @RequestMapping("/register")
    public String hello(){
        return "forward:/login";
    }
 
    /**
     * 访问静态资源中名称为login的文件
     */
    @RequestMapping("/login")
    public String hello1(){
        return "login";
    }
 
    /**
     * 重定向到index.html
     */
    @GetMapping("/index")
    public String hello2(){
        return "redirect:/index.html";
    }
 
    /**
     * 返回的是数据
     */
    @GetMapping("/goIndex")
    @ResponseBody
    public String hello3(){
        return "index";
    }
 
}
 

业务编写

• mapper层：UserMapper，接口+注解的方式，构建器处理复杂sql
• model层：User,创建项目时导入依赖lombok，使用@Geter+@Setter注解，表示自动生成getter和setter方法
• service层：UserService类，标注为业务层，注入mapper层对象，处理业务逻辑
• 控制器：UserController类，注入业务层对象，处理请求跳转
• 工具类：RespResult类，响应给前端的数据

测试

• mysql导入sql脚本，idea导入springboot01
• 启动项目后，打开cmd，输入：curl -d userName=admin http://localhost:8080/searchUser

下载

• 模板下载地址
• 案例下载地址