SSM整合 Spring MVC5.0.8+Spring 5.0.8+Mybatis 3.4.6

第一步:使用Maven搭建项目,并在pom.xml中导入SSM需要使用到的依赖包

<!--单元测试依赖-->
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
      <scope>test</scope>
    </dependency>

    <!--Servlet依赖-->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>4.0.0</version>
      <scope>provided</scope>
    </dependency>
    <!--jstl依赖-->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>
    <!--mysql数据库驱动依赖-->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.38</version>
    </dependency>

    <!--c3p0依赖-->
    <dependency>
      <groupId>com.mchange</groupId>
      <artifactId>c3p0</artifactId>
      <version>0.9.5.2</version>
    </dependency>

    <!--spring-webmvc依赖-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>5.0.8.RELEASE</version>
    </dependency>


    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>5.0.8.RELEASE</version>
    </dependency>

    <!--mybatis依赖-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.4.6</version>
    </dependency>

    <!--mybatis-spring依赖-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.2</version>
    </dependency>




    <!-- jedis (一个redis client端的jar)-->
    <dependency>
      <groupId>redis.clients</groupId>
      <artifactId>jedis</artifactId>
      <version>2.9.0</version>
    </dependency>






    <!--fastjson依赖-->
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>fastjson</artifactId>
      <version>1.2.7</version>
    </dependency>



<build>
    <finalName>ssm_02</finalName>
<!--如果是使用idea,请加上这段代码是访问包的静态文件-->
    <resources>
      <resource>
        <directory>src/main/java</directory>
        <includes>
          <include>**/*.xml</include>
        </includes>
      </resource>
    </resources>
    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
      <plugins>
        <plugin>
          <artifactId>maven-clean-plugin</artifactId>
          <version>3.0.0</version>
        </plugin>
        <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
        <plugin>
          <artifactId>maven-resources-plugin</artifactId>
          <version>3.0.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>3.7.0</version>
        </plugin>
        <plugin>
          <artifactId>maven-surefire-plugin</artifactId>
          <version>2.20.1</version>
        </plugin>
        <plugin>
          <artifactId>maven-war-plugin</artifactId>
          <version>3.2.0</version>
        </plugin>
        <plugin>
          <artifactId>maven-install-plugin</artifactId>
          <version>2.5.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-deploy-plugin</artifactId>
          <version>2.8.2</version>
        </plugin>
      </plugins>
    </pluginManagement>
  </build>

第二步:在项目中创建包

根据自己建包习惯而定

第三步:在resources中创建db.properties(数据库配置文件,名字可以自定义)

#定义数据库驱动
drivers=com.mysql.jdbc.Driver
url=jdbc:mysql://127.0.0.1:3306/db_a?useUnicode=true&characterEncoding=UTF-8
user=root
userpassword=root


#定义初始连接数 
initPoolSize=3


#定义最大连接数 
maxPoolSizes=30


#定义最小空闲  
minIdle=1  


#定义最长等待时间  
maxWait=60000  

第四步:在resources中创建spring.xml

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

    <!--自动扫描:自动扫描com.heyang.ssm包下所有类的注解-->
    <context:component-scan base-package="com.heyang.ssm"/>



<!--加载db.properties-->
    <context:property-placeholder location="classpath:db.properties"></context:property-placeholder>



    <!--配置数据源 从c3p0-->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="${drivers}"></property>
        <property name="jdbcUrl" value="${url}"></property>
        <property name="user" value="${user}"></property>
        <property name="initialPoolSize" value="${initPoolSize}"></property>
        <property name="maxPoolSize" value="${maxPoolSizes}"></property>
    </bean>

    <!--配置SqlSessionFactory-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!--加载数据源-->
        <property name="dataSource" ref="dataSource"></property>
        <!--加载MyBatis配置文件-->
        <property name="configLocation" value="classpath:mybatis-Config.xml"></property>
        <!--加载所有映射文件-->
        <property name="mapperLocations" value="classpath:com/heyang/ssm/mapper/*.xml"></property>
        <!--typeAliasesPackage对应实体类所在的包,这个时候会自动取包名作为别名-->
        <property name="typeAliasesPackage" value="com.heyang.ssm.pojo"></property>
    </bean>


    <!--配置Dao层:spring注入这个bean-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!--将sqlSessionFactory注入com.zking.dao包的类中,dao包中的类直接使用sqlSessionFactory-->
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
        <property name="basePackage" value="com.heyang.ssm.dao"></property>
    </bean>


    <!-- 事务管理 -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>

第五步:在pojo包中创建实体类

package com.heyang.ssm.pojo;

import java.io.Serializable;

public class User implements Serializable {

    private Integer userId;
    private String userName;
    private String userPassword;

    public User(Integer userId, String userName, String userPassword) {
        this.userId = userId;
        this.userName = userName;
        this.userPassword = userPassword;
    }

    public User(String userName, String userPassword) {
        this.userName = userName;
        this.userPassword = userPassword;
    }

    public User() {
    }

    public Integer getUserId() {
        return userId;
    }

    public void setUserId(Integer userId) {
        this.userId = userId;
    }

    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName;
    }

    public String getUserPassword() {
        return userPassword;
    }

    public void setUserPassword(String userPassword) {
        this.userPassword = userPassword;
    }

    @Override
    public String toString() {
        return "User{" +
                "userId=" + userId +
                ", userName='" + userName + '\'' +
                ", userPassword='" + userPassword + '\'' +
                '}';
    }
}

第六步:在dao包中创建接口,编写方法

package com.heyang.ssm.dao;

import com.heyang.ssm.pojo.User;

import java.util.List;

public interface UserDao {

    /**
     * 增加
     * @param user
     * @return
     */
    public int addUser(User user);

    /**
     * 删除
     * @param user
     * @return
     */
    public int deleteUser(Integer user);

    /**
     * 修改
     * @param user
     * @return
     */
    public int updateUser(User user);

    /**
     * 根据ID查询
     * @param userId
     * @return
     */
    public User getUserById(Integer userId);


    /**
     * 得到所有的用户
     * @return
     */
    public List<User> getAllUser();

    /**
     * 综合查询
     * @param user
     * @return
     */
    public List<User> getUser(User user);
}

第七步:在mappier包中创建实体类的Mapper文件:UserMapper.xml

<?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.heyang.ssm.dao.UserDao">
    <insert id="addUser" parameterType="User">
        INSERT INTO T_USER VALUES(NULL,#{userName},#{userPassword})
    </insert>


    <delete id="deleteUser" parameterType="integer">
        DELETE FROM T_USER WHERE USER_ID = #{userId}
    </delete>


    <select id="getAllUser" resultType="User">
        SELECT USER_ID,USER_NAME FROM T_USER
    </select>






    <select id="getUserById" parameterType="integer" resultType="User" >
        SELECT USER_ID,USER_NAME FROM T_USER WHERE USER_ID=#{userId}
    </select>






    <update id="updateUser" parameterType="User">
        <if test="userPassword!=''">
            UPDATE T_USER SET USER_NAME=#{userName},USER_PASSWORD=#{userPassword} WHERE USER_ID=#{userId}
        </if>

        <if test="userPassword==''">
            UPDATE T_USER SET USER_NAME=#{userName} WHERE USER_ID=#{userId}
        </if>
    </update>


    <select id="getUser" parameterType="User" resultType="User">
        SELECT USER_ID,USER_NAME FROM T_USER WHERE 1=1
        <if test="userId!='' and userName==''">
            AND USER_ID=#{userId}
        </if>
        <if test="userName!='' and userId=='' ">
            AND USER_NAME LIKE "%"#{userName}"%"
        </if>
        <if test="userId!='' and userName!='' ">
            AND USER_ID=#{userId} AND USER_NAME LIKE "%"#{userName}"%"
        </if>
    </select>





    <!--<resultMap id="userMapper" type="com.heyang.ssm.pojo.User">-->
        <!--<id property="userId" column="USER_ID" />-->
        <!--<result property="userName" column="USER_NAME" />-->
    <!--</resultMap>-->
</mapper>

第八步:在service中创建接口,在impl包中创建接口的实现类

package com.heyang.ssm.service;

import com.heyang.ssm.pojo.User;

import java.util.List;

public interface UserService {

    /**
     * 增加
     * @param user
     * @return
     */
    public int addUser(User user);


    /**
     * 得到所有的用户
     * @return
     */
    public List<User> getAllUser();


    /**
     * 根据ID查询
     * @param userId
     * @return
     */
    public User getUserById(Integer userId);





    /**
     * 修改
     * @param user
     * @return
     */
    public int updateUser(User user);




    /**
     * 删除
     * @param user
     * @return
     */
    public int deleteUser(Integer user);

    /**
     * 综合查询
     * @param user
     * @return
     */
    public List<User> getUser(User user);
}

service实现类

package com.heyang.ssm.service.impl;

import com.heyang.ssm.dao.UserDao;
import com.heyang.ssm.pojo.User;
import com.heyang.ssm.service.UserService;
import org.springframework.stereotype.Service;

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

@Service("userService")
public class UserServiceImpl implements UserService {
    @Resource
    private UserDao userDao;

    @Override
    public int addUser(User user) {
        return userDao.addUser(user);
    }

    @Override
    public List<User> getAllUser() {
        return userDao.getAllUser();
    }

    @Override
    public User getUserById(Integer userId) {
        return userDao.getUserById(userId);
    }

    @Override
    public int updateUser(User user) {
        return userDao.updateUser(user);
    }

    @Override
    public int deleteUser(Integer user) {
        return userDao.deleteUser(user);
    }

    @Override
    public List<User> getUser(User user) {
        return userDao.getUser(user);
    }
}

第九步:配置web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         id="WebApp_ID" version="3.1">

  
  <!--加载spring.xml文件-->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:spring.xml</param-value>
  </context-param>

<!--配置编码过滤器 防止乱码-->
  <filter>
    <filter-name>encodingFilter</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>
  </filter>
  <filter-mapping>
    <filter-name>encodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

  <!--spring mvc前端控制器-->
  <servlet>
    <servlet-name>SpringMVC</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:spring.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>SpringMVC</servlet-name>
    <url-pattern>*.do</url-pattern>
  </servlet-mapping>
  

  <!--spring监听器-->
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>

  
  
</web-app>

接下来大家可以去写一个登陆注册的案例去实测一下

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