springmvc+spring+mybatis整合案例 [first]

本次总结一个出门级别的ssm整合案例(只介绍查询操作 具体其他操作可以自己自由实现)

注意事项:

1.本案例使用intellij idea开发

2.具体jar包不做介绍(本人导入了spring的全部包+mybatis的包以及数据库驱动包和pring-mybatis整合工具包)

3.本案例很大程度上参考了一些教学视频(如有侵权,请给我留言)

4.本案例只供学习使用.

具体开发流程:

1. 程序结构图:
   

2. 配置文件的编写.

   2.1 web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
         xmlns="http://java.sun.com/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
    http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">


    <!--配置spring监听器-->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <!--配置springmvc拦截器-->
    <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:springmvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <url-pattern>*.form</url-pattern>
    </servlet-mapping>

    <!--配置乱码解决方案-->
    <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>

</web-app>

2.2 applicationContext.xml(具体的bean是在具体编码后填写)

<?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:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:context="http://www.springframework.org/schema/context"
       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/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">

        <!--配置通知-->
        <tx:advice id="txAdvice" transaction-manager="txManager">
                <tx:attributes>
                        <tx:method name="select*" read-only="true"/>
                        <tx:method name="update*" propagation="REQUIRED"/>
                        <tx:method name="insert*" propagation="REQUIRED"/>
                        <tx:method name="delete" propagation="REQUIRED"/>
                </tx:attributes>
        </tx:advice>
        <!--配置切面-->
        <aop:config>
                <aop:pointcut id="piontcut" expression="execution(* com.engle.service.impl.*.*(..))"/>
                <aop:advisor advice-ref="txAdvice" pointcut-ref="piontcut"/>
        </aop:config>


        <!--连接数据库配置文件-->
        <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
                <property name="location" value="classpath:database.properties"/>
        </bean>

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

        <!--配置session工厂-->
        <bean id="sqlsessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
                <property name="dataSource" ref="dataSource"/>
                <property name="configLocation" value="classpath:mybatis-config.xml"/>
        </bean>

        <bean id="userDao" class="com.engle.dao.impl.UserDaoImpl">
                <property name="sqlSessionFactory" ref="sqlsessionFactory"/>
        </bean>

        <bean id="userService" class="com.engle.service.impl.UserServiceImpl">
                <property name="userDao" ref="userDao"/>
        </bean>

        <!--配置事务管理器-->
        <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
                <property name="dataSource" ref="dataSource"/>
        </bean>
        <!--扫描注解-->
        <context:component-scan base-package="com.engle" />

</beans>

2.3 database.properties(数据库配置文件)

driver=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/*yourdatabasename*
username=root
password=*yourpassword*

2.4 mybatis-config.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <!--指定别名-->
    <typeAliases>
        <typeAlias type="com.engle.vo.User" alias="user"/>
    </typeAliases>
    <!--指定映射文件-->
    <mappers>
        <mapper resource="com/engle/vo/UserMapper.xml"/>
    </mappers>
</configuration>

2.5 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"
       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">

    <!--扫描注解所在的包-->
    <context:component-scan base-package="com.engle.controller"/>
</beans>

3.具体的编码工作

3.1 vo模块(POJOs)

package com.engle.vo;

/**
 * Created by engle on 16-5-24.
 */
public class User {
    private int id;
    private String name;
    private  String password;

    public User() {
    }



    public User(int id, String name, String password) {
        super();
        this.id = id;
        this.name = name;
        this.password = password;
    }



    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 String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public String toString() {
        return "User{" +
                "id=" + id +
                ", name='" + name + '\'' +
                ", password='" + password + '\'' +
                '}';
    }
}

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">
<!--命名空间-->
<mapper namespace="com.engle.vo.UserMapper">
    <!--采用* 表的属性必须和pojos属性名相同-->
    <select id="selectAll" resultType="com.engle.vo.User">
        SELECT * FROM user
    </select>

</mapper>

3.2 dao模块(包括impl)

UserDao

/**
 * Created by engle on 16-5-24.
 */
public interface UserDao {
    public List<User> selectAll();
}

UserDaoImpl

/**
 * Created by engle on 16-5-23.
 */
public class UserDaoImpl extends SqlSessionDaoSupport implements UserDao {


    public List<User> selectAll() {
        String statement = "com.engle.vo.UserMapper.selectAll";
        return getSqlSession().selectList(statement);
    }
}

3.3 service模块(包括impl)
UserService

public interface UserService {
    public List<User> selectAll();
}

UserServiceImpl

/**
 * Created by engle on 16-5-23.
 */
public class UserServiceImpl implements UserService {
    private UserDao userDao;

    public void setUserDao(UserDao userDao) {
        this.userDao = userDao;
    }

    public List<User> selectAll() {
        return userDao.selectAll();
    }
}

3.4 utils模块

MybatisUtils

/**
 * Created by engle on 16-5-23.
 */
public class MybatisUtils {
    /**
     * 获取userservice对象
     */
    public static UserService getUserService() {
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        return (UserService) context.getBean("userService");
    }

}

3.5 controller模块

UserController

/**
 * Created by engle on 16-5-23.
 */
@Controller
public class UserController {

    private UserService userService;

    public void setUserService(UserService userService) {
        this.userService = userService;
    }


    @RequestMapping("/selectAll")
    public String list(ModelMap map){
        setUserService(MybatisUtils.getUserService());
        map.addAttribute("list",userService.selectAll());
        return "/show.jsp";
    }
}

4. jsp页面的编写
show.jsp

<%@ page import="org.springframework.ui.ModelMap" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@taglib prefix="c" uri="/WEB-INF/tld/c.tld" %>

<html>
  <head>
    <title>show all user</title>
  </head>
  <body>
  <table width="80%" align="center">
    <tr>
      <td>编号</td>
      <td>姓名</td>
      <td>密码</td>
    </tr>

    <c:forEach items="${list }" var="user">
      <tr>
        <td>${user.id }</td>
        <td>${user.name }</td>
        <td>${user.password }</td>
      </tr>

    </c:forEach>
   </table>
  </body>
</html>

5.案例结果:

5.1 数据库查询结果:

5.2 网页显示结果

6.总结:

在这次的案例中 由于使用的idea工具遇到了很多的麻烦,虽然耗费了不少的时但是很多东西让我有了更深的理解.我觉得也是一件好事.