SSM框架集成

步骤一：创建 Maven web 项目

步骤二：添加 pom.xml 相关依赖包

<?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">
  <modelVersion>4.0.0</modelVersion>

  <groupId>org.binge</groupId>
  <artifactId>ssmdemo</artifactId>
  <version>1.0-SNAPSHOT</version>

  <properties>
    <maven.compiler.source>8</maven.compiler.source>
    <maven.compiler.target>8</maven.compiler.target>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <spring.version>5.3.6</spring.version>
  </properties>

  <dependencies>
    <!-- 添加springmvc依赖 -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.projectlombok</groupId>
      <artifactId>lombok</artifactId>
      <version>1.16.18</version>
    </dependency>

    <!-- JSTL 依赖包-->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
      <scope>runtime</scope>
    </dependency>

    <dependency>
      <groupId>taglibs</groupId>
      <artifactId>standard</artifactId>
      <version>1.1.2</version>
    </dependency>

    <!--数据校验依赖包-->
    <dependency>
      <groupId>javax.validation</groupId>
      <artifactId>validation-api</artifactId>
      <version>2.0.1.Final</version>
    </dependency>
    <dependency>
      <groupId>org.hibernate.validator</groupId>
      <artifactId>hibernate-validator</artifactId>
      <version>6.0.16.Final</version>
    </dependency>

    <!--文件上传依赖包-->
    <dependency>
      <groupId>commons-fileupload</groupId>
      <artifactId>commons-fileupload</artifactId>
      <version>1.4</version>
    </dependency>
    <dependency>
      <groupId>commons-io</groupId>
      <artifactId>commons-io</artifactId>
      <version>2.6</version>
    </dependency>

    <!-- 添加jackson配置 -->
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-core</artifactId>
      <version>2.11.4</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.11.4</version>
    </dependency>

    <!-- MyBatis依赖 -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.5.5</version>
    </dependency>
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>2.0.5</version>
    </dependency>

    <!-- 数据库驱动依赖（根据你使用的数据库选择） -->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>8.0.18</version>
    </dependency>

    <!-- 日志整合 slf4j门面设计模式与 log4j或log4j2一起使用-->
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-api</artifactId>
      <version>1.7.25</version>
    </dependency>
    <!-- 日志-->
    <dependency>
      <groupId>ch.qos.logback</groupId>
      <artifactId>logback-classic</artifactId>
      <version>1.2.3</version>
    </dependency>
  </dependencies>

</project>

步骤三：在 resources 目录下分别创建 springmvc.xml 和 spring-config.xml 两个 IoC 容器

springmvc.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <!--开启SpringMVC注解驱动-->
    <mvc:annotation-driven />

    <!-- springmvc容器（也就是一个spring容器）会扫描指定包中的组件，将其注册到springmvc容器中 -->
    <context:component-scan base-package="com.binge"/>

    <!-- 配置允许访问静态资源 -->
    <mvc:default-servlet-handler />

    <!-- 配置全局 CORS -->
    <mvc:cors>
        <mvc:mapping path="/**" />
    </mvc:cors>
</beans>

spring-config.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mybatis="http://mybatis.org/schema/mybatis-spring"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
           http://www.springframework.org/schema/beans/spring-beans.xsd
           http://www.springframework.org/schema/context
           http://www.springframework.org/schema/context/spring-context.xsd
           http://mybatis.org/schema/mybatis-spring
           http://mybatis.org/schema/mybatis-spring.xsd">

    <!-- 自动扫描注解 -->
    <context:component-scan base-package="com.binge"/>

    <!-- 引入数据库配置文件-->
    <context:property-placeholder location="classpath:database.properties"/>

    <!-- 配置数据源 -->
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="${spring.datasource.driver-class-name}"/>
        <property name="url" value="${spring.datasource.url}"/>
        <property name="username" value="${spring.datasource.username}"/>
        <property name="password" value="${spring.datasource.password}"/>
    </bean>

    <!-- MyBatis 扫描 mapper -->
    <mybatis:scan base-package="com.binge.dao"/>

    <!-- 配置SqlSessionFactory -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <!--设置entity实体类路径-->
        <property name="typeAliasesPackage" value="com.binge.entity" />
        <!--设置mapper映射文件路径-->
        <property name="mapperLocations" value="classpath*:mapper/*.xml" />
    </bean>
</beans>

database.properties

spring.datasource.url=jdbc:mysql://localhost:3306/binge?characterEncoding=utf8&serverTimezone=UTC
spring.datasource.username=root
spring.datasource.password=123456
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver

步骤四：修改 web.xml 文件

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
         version="4.0">
  <!-- 配置Spring容器加载配置文件路径 -->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:spring-config.xml</param-value>
  </context-param>
  <!-- 监听器(spring文件相关的监听器）-->
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>

  <servlet>
    <servlet-name>springmvc</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <!-- contextConfigLocation 用来指定springmvc配置文件的位置，文件名称不一定要叫springmvc，大家可以随意起名 -->
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:springmvc.xml</param-value>
    </init-param>
    <!-- load-on-startup：表示web容器启动的时，当前对象创建的顺序，值越小初始化越早，大于等于0 -->
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>springmvc</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>

  <!-- 设置 CharacterEncodingFilter 过滤器，这个类会对request和response设置字符集编码，解决中文乱码问题(优先级最高）        -->
  <filter>
    <filter-name>characterEncodingFilter</filter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    <init-param>
      <param-name>encoding</param-name>
      <param-value>UTF-8</param-value>
    </init-param>
    <init-param>
      <param-name>forceEncoding</param-name>
      <param-value>true</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>characterEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
</web-app>

步骤五：在 resources 目录下创建 mapper 文件夹

在 mapper 文件夹内创建 UserMapper.xml 文件

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.binge.dao.UserMapper">
    <insert id="insert" parameterType="com.binge.entity.UserEntity" keyProperty="id" useGeneratedKeys="true">
        <![CDATA[ INSERT INTO `tb_user` (name) VALUES (#{name})]]>
    </insert>

    <select id="getList" resultType="com.binge.entity.UserEntity">
        <![CDATA[
        SELECT id,name FROM tb_user
        ]]>
    </select>
</mapper>

步骤六：在 resources 目录下创建 logback.xml 日志配置文件

<?xml version="1.0" encoding="UTF-8"?>
<configuration debug="false" scan="true" scanPeriod="1 seconds">

    <contextName>logback</contextName>

    <property name="log.path" value="F:\\logback.log" />

    <!--日志输出到控制台-->
    <appender name="console" class="ch.qos.logback.core.ConsoleAppender">
        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>DEBUG</level>
        </filter>
        <encoder>
            <pattern>%d{HH:mm:ss.SSS} %contextName [%thread] %-5level %logger{36} - %msg%n
            </pattern>
        </encoder>
    </appender>

    <!-- 日志输出到文件 -->
    <appender name="file" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>${log.path}</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${log.path}.%d{yyyy-MM-dd}.zip</fileNamePattern>
        </rollingPolicy>

        <encoder>
            <pattern>%date %level [%thread] %logger{36} [%file : %line] %msg%n
            </pattern>
        </encoder>
    </appender>

    <!-- 根日志输出级别-->
    <root level="debug">
        <appender-ref ref="console" />
        <appender-ref ref="file" />
    </root>

    <!-- 指定包日志输出级别-->
    <logger name="com.binge.util" level="info" />

</configuration>

步骤七：在 src/main 下创建 java 包以及子包

包目录结构如下：

UserController.java

package com.binge.controller;

import com.binge.dto.UserDto;
import com.binge.entity.UserEntity;
import com.binge.service.IUserService;
import com.binge.util.ResultVo;
import lombok.extern.java.Log;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;
import java.util.List;

/**
 * @author binge
 * @Description 用户页面控制器
 * @date 2023年09月17日 下午 3:38
 */
@RestController
@Slf4j
public class UserController {
    @Resource
    private IUserService userService;

    @PostMapping("/user")
    public ResultVo<UserEntity> addUser(@RequestBody UserDto userDto) {
        log.debug(userDto.toString());
        UserEntity result = userService.insert(userDto);
        log.debug(result.toString());
        return ResultVo.success(result);
    }

    @GetMapping("/users")
    public ResultVo<List<UserEntity>> getUsers() {
        List<UserEntity> list = userService.getList();
        return ResultVo.success(list);
    }
}

UserMapper.java

package com.binge.dao;

import com.binge.dto.UserDto;
import com.binge.entity.UserEntity;

import java.util.List;

/**
 * @author binge
 * @Description 用户映射器接口
 * @date 2023年09月11日 下午 2:31
 */
public interface UserMapper {
    void insert(UserDto user);

    List<UserEntity> getList();
}

UserDto.java

package com.binge.dto;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

/**
 * @author binge
 * @Description 用户参数
 * @date 2023年09月17日 下午 3:37
 */
@Data
@AllArgsConstructor
@NoArgsConstructor
public class UserDto {
    private Integer id;
    private String name;
}

UserEntity.java

package com.binge.entity;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

/**
 * @author binge
 * @Description 用户实体类
 * @date 2023年09月11日 下午 2:29
 */
@Data
@AllArgsConstructor
@NoArgsConstructor
public class UserEntity {
    private Integer id;
    private String name;
}

UserServiceImpl.java

package com.binge.service.impl;

import com.binge.dao.UserMapper;
import com.binge.dto.UserDto;
import com.binge.entity.UserEntity;
import com.binge.service.IUserService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import javax.annotation.Resource;
import java.util.List;

/**
 * @author binge
 * @Description 用户业务实现类
 * @date 2023年09月11日 下午 2:38
 */
@Service //控制反转
public class UserServiceImpl implements IUserService {
    @Resource //依赖注入
    private UserMapper userMapper;

    @Transactional(rollbackFor = Exception.class)
    @Override
    public UserEntity insert(UserDto user) {
        userMapper.insert(user);
        UserEntity userEntity = new UserEntity();
        BeanUtils.copyProperties(user,userEntity);
        return userEntity;
    }

    @Transactional
    @Override
    public List<UserEntity> getList() {
        List<UserEntity> list = userMapper.getList();
        return list;
    }
}

IUserService.java

package com.binge.service;

import com.binge.dto.UserDto;
import com.binge.entity.UserEntity;

import java.util.List;

/**
 * @author binge
 * @Description 用户业务接口
 * @date 2023年09月11日 下午 2:36
 */
public interface IUserService {
    UserEntity insert(UserDto user);
    List<UserEntity> getList();
}

ResultVo.java

package com.binge.util;
import lombok.Data;

import java.io.Serializable;

/**
 * Ajax 请求统一响应工具类
 */
@Data
public class ResultVo<T> implements Serializable {
    private static final long serialVersionUID = 1L;

    //状态码
    private int code;

    //状态码描述
    private String message;

    //数据结果，泛型，可以是列表、单个对象、数字、布尔值等
    private T data;

    public ResultVo() {
    }

    public ResultVo(int code, String message) {
        this.code = code;
        this.message = message;
    }

    public static <T> ResultVo<T> success(T data) {
        ResultVo<T> resultVo = new ResultVo<>();
        resultVo.setCode(200);
        resultVo.setMessage("ok");
        resultVo.setData(data);
        return  resultVo;
    }
}

步骤八：启动 Tomcat

控制台没有报错，页面显示 Hello,World!，说明 Tomcat 启动成功

步骤九：启动 Postman 进行接口测试

接口测试成功，SSM 框架集成完成：）