SSM整合

一、引入所有的jar文件
1. mysql数据库驱动jar
mysql-connector-java-5.1.46.jar

2. mybatis 的jar包
mybatis-3.2.2.jar

3. spring的核心jar。
commons-logging-1.1.3.jar
spring-beans-4.2.2.RELEASE.jar
spring-context-4.2.2.RELEASE.jar
spring-core-4.2.2.RELEASE.jar
spring-expression-4.2.2.RELEASE.jar

4. spring的注解。
spring-aop-4.2.2.RELEASE.jar

5. 事物处理。
spring-aspects-4.2.2.RELEASE.jar
spring-jdbc-4.2.2.RELEASE.jar
spring-tx-4.2.2.RELEASE.jar
com.springsource.org.aopalliance-1.0.0.jar
com.springsource.org.aspectj.weaver-1.6.8.RELEASE.jar

6. 数据源的jar包
c3p0-0.9.1.1.jar

7. springmvc的jar包。
spring-web-4.2.2.RELEASE.jar
spring-webmvc-4.2.2.RELEASE.jar

8. spring与mybatis整合的jar包
mybatis-spring-1.3.0.jar

二、配置文件

1.spring的配置文件

<?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:tx="http://www.springframework.org/schema/tx"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:aop="http://www.springframework.org/schema/aop"
    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-4.2.xsd
        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd">
    
    <!-- 包扫描 -->
    <context:component-scan base-package="com.zhiyou100.klb"/>
    
    <!-- 引入属性文件 
    <context:property-placeholder file-encoding="utf-8" location="classpath:*.properties"/>
    -->

    <!-- 配置数据源：数据库交互的。c3p0 -->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="user" value="root" />
        <property name="password" value="123456" />
        <property name="driverClass" value="com.mysql.jdbc.Driver" />
        <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/mybatis" />
    </bean>
    
    <!-- 定义一个SessionFactory工程类的bean ;把mybatis配置文件中的内容放在该类中-->
    <bean id="sessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <!-- 为该包下的实体类起别名 -->
        <property name="typeAliasesPackage" value="com.zhiyou100.klb.bean"/>
        <!-- 加载mybatis的映射文件 -->
        <property name="mapperLocations" value="classpath:com/zhiyou100/klb/mapper/*.xml"/>
    </bean>
    
    <!-- 配置mybatis接口的实现类userDao=session.getMapper(UserDao.class);相当于创建了 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!-- basePackage:表示哪些包下的接口要产生实现类 -->
        <property name="basePackage" value="com.zhiyou100.klb.dao"/>
        <property name="sqlSessionFactory" ref="sessionFactory"/>
    </bean>
    
    <!-- 定义一个事务管理类 -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource" />
    </bean>
    
    <!-- 设置方法的属性 -->
    <tx:advice transaction-manager="transactionManager" id="advice">
        <tx:attributes>
            <!-- read-only:只读。用在查询上 -->
            <tx:method name="query*" read-only="true"/>
            <tx:method name="find*" read-only="true"/>
            <tx:method name="get*" read-only="true"/>
            <tx:method name="select*" read-only="true"/>
            <tx:method name="*"/>
        </tx:attributes>
    </tx:advice>
    
    <!-- 切面的配置 -->
    <aop:config>
        <!-- 切点 业务层所在的包 -->
        <aop:pointcut expression="execution(* com.zhiyou100.klb.service.*.*(..))" id="pointcut"/>
        <aop:advisor advice-ref="advice" pointcut-ref="pointcut"/>
    </aop:config>
    
</beans>

2.springmvc的配置文件

<?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/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd
        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-4.2.xsd">
    
    <!-- 包扫描 -->
    <context:component-scan base-package="com.zhiyou100.klb"/>
    
    <!-- 开启注解驱动,设置编码 -->
    <mvc:annotation-driven/>
    
    <!-- 释放静态资源 -->
    <mvc:default-servlet-handler/>
    
    <!-- 配置视图解析器 -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>
    
</beans>

3.web.xml文件

<?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">
  <display-name>SSM</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
  
  <!-- 设置编码 -->
  <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>
    </filter>
    <filter-mapping>
        <filter-name>CharacterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
  
  <!-- 加载springmvc的配置文件 -->
      <!-- 设置控制器 -->
        <servlet>
            <servlet-name>springDispatcherServlet</servlet-name>
            <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
            <init-param>
                <param-name>contextConfigLocation</param-name>
                <param-value>classpath:spring-servlet.xml</param-value>
            </init-param>
            <!-- 容器在启动时加载springmvc的配置文件。访问时加载配置文件 -->
            <load-on-startup>1</load-on-startup>
        </servlet>
        <servlet-mapping>
            <servlet-name>springDispatcherServlet</servlet-name>
            <url-pattern>/</url-pattern>
        </servlet-mapping>
        
    <!-- 加载spring的配置文件 -->
        <!-- 指定spring的配置文件的路径 -->
        <context-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:applicationContext.xml</param-value>
        </context-param>
    
        <!-- Bootstraps the root web application context before servlet initialization -->
        <listener>
            <!-- 默认加载的配置文件为WEB-INF/applicationContext.xml -->
            <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
        </listener>
    
</web-app>

三、用户表的crud

1.com.zhiyou100.klb.bean

package com.zhiyou100.klb.bean;

public class Users {
    private int id;
    private String name;
    private int age;
    private String sex;
    public String getSex() {
        return sex;
    }
    public void setSex(String sex) {
        this.sex = sex;
    }
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public int getAge() {
        return age;
    }
    public void setAge(int age) {
        this.age = age;
    }
}

2.com.zhiyou100.klb.dao

package com.zhiyou100.klb.dao;

import java.util.List;

import com.zhiyou100.klb.bean.Users;

public interface UsersDao {
    
    /**
     * 查询所有
     * @return
     */
    public List<Users> getAll();

    /**
     * 查询用户
     * @return
     */
    public Users getUser(int id);
    
    /**
     * 添加
     * @param user
     */
    public void add(Users user);
    
    /**
     * 根据ID删除
     * @param id
     */
    public void delete(int id);
    
    /**
     * 更新
     * @param user
     */
    public void update(Users user);
}

3.com.zhiyou100.klb.service

package com.zhiyou100.klb.service;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.zhiyou100.klb.bean.Users;
import com.zhiyou100.klb.dao.UsersDao;

@Service
public class UserService {
    
    @Autowired
    private UsersDao usersDao;
            
    /**
     * 查询所有
     * @return
     */
    public List<Users> getAll(){
        return usersDao.getAll();
    }
    
    /**
     * 查询用户
     * @return
     */
    public Users getUser(int id){
        return usersDao.getUser(id);
    }
    
    /**
     * 添加
     * @param user
     */
    public void add(Users user){
        usersDao.add(user);
    }
    
    /**
     * 根据ID删除
     * @param id
     */
    public void delete(int id) {
        usersDao.delete(id);
    }
    
    /**
     * 更新
     * @param user
     */
    public void update(Users user){
        usersDao.update(user);
    }
}

4.com.zhiyou100.klb.mapper

<?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.zhiyou100.klb.dao.UsersDao">
    
    <select id="getUser" parameterType="int" resultType="Users">
          select * from users where id = #{id}   
    </select>

    <select id="getAll" resultType="Users">
          select * from users   
    </select>
    
    <insert id="add" parameterType="Users" useGeneratedKeys="true" keyProperty="id">
        insert into users(name,age,sex) values(#{name},#{age},#{sex})
    </insert>
    
    <delete id="delete" parameterType="int">
        delete from users where id = #{id} 
    </delete>
    
    <update id="update" parameterType="Users">
        update users set name = #{name}, age = #{age}, sex = #{sex} where id = #{id}
    </update>
  
</mapper>

5.com.zhiyou100.klb.controller

package com.zhiyou100.klb.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import com.zhiyou100.klb.bean.Users;
import com.zhiyou100.klb.service.UserService;

@Controller
@RequestMapping("user")
public class UserController {
    
    @Autowired
    private UserService userService;
    
    @RequestMapping("deleteUser")
    public String delete(int id) {
        userService.delete(id);
        return "redirect:allUser";
    }
    
    @RequestMapping("allUser")
    public String all(Model model) {
        model.addAttribute("list", userService.getAll());
        return "list";
    }
    
    @RequestMapping("getAdd")
    public String getAdd() {
        return "add";
    }
    
    @RequestMapping("addUser")
    public String add(Users user) {
        userService.add(user);
        return "index";
    }
    
    @RequestMapping("getUpdate")
    public String getUpdate(int id,Model model) {
        System.out.println(id);
        model.addAttribute("user", userService.getUser(id));
        System.out.println(userService.getUser(id));
        return "update";
    }
    
    @RequestMapping("updateUser")
    public String update(Users user) {
        userService.update(user);
        return "redirect:allUser";
    }
    
}