SSM框架的搭建和测试（Spring+Spring MVC+MyBatis）

Spring MVC：MVC框架，通过Model-View-Controller模式很好的将数据，业务与展现进行分离。

MyBatis：数据持久层框架

我这里使用的是MyEclipse 2016 CI

下面是具体的搭建流程：

1、项目结构：

2、安装Spring

3、依赖包（其中包括Spring MVC，Spring MVC验证包，MyBatis整合SpringMVC所需包）

4、web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0">
  <display-name>SpringMVC3</display-name>
   <!-- 监听服务器启动 -->
  <listener>
      <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>

  <!-- 读取spring配置文件 -->
  <context-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:config/springMVC-servlet.xml</param-value>
  </context-param>

  <!-- 配置SpringMVC核心 -->
  <servlet>
      <servlet-name>springMVC</servlet-name>
      <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
      <!-- 指定springMVC-servlet.xml路径 -->
      <init-param>
          <param-name>contextConfigLocation</param-name>
          <param-value>classpath:config/springMVC-servlet.xml</param-value>
      </init-param>
  </servlet>

  <servlet-mapping>
      <servlet-name>springMVC</servlet-name>
      <url-pattern>*.form</url-pattern>
  </servlet-mapping>

  <!-- 解决中文乱码 -->
  <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>
        <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>

5、jdbc.properties

driver=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/jsp?characterEncoding=utf-8
username=root
password=************

6、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>
    <settings>
        <!-- 允许JDBC支持生成的键 -->
        <setting name="useGeneratedKeys" value="true"/>
    </settings>
    <typeAliases>
        <!-- 配置数据类型的别名 -->
        <typeAlias type="com.cn.pojo.User"  alias="user"/>
    </typeAliases>

</configuration>

7、springMVC-servlet.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:p="http://www.springframework.org/schema/p"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
                        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
                        http://www.springframework.org/schema/mvc
                        http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
                        http://www.springframework.org/schema/context
                        http://www.springframework.org/schema/context/spring-context-3.0.xsd">
    <!-- 读取外面文件 -->
    <context:property-placeholder location="classpath:config/jdbc.properties"/>

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

    <!-- 将mybatis交给Spring管理 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="datasource"></property>
        <property name="configLocation" value="classpath:config/mybatis-config.xml"></property>
    </bean>

    <!-- 扫描 -->
    <context:component-scan base-package="com.cn.action,com.cn.service"></context:component-scan>

    <!-- 启动驱动 -->
    <mvc:annotation-driven/>

    <!-- 注入校验bean -->
    <bean class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean"></bean>

    <!-- 扫描mapper -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.cn.dao"></property>
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
    </bean>
</beans>

8、pojo封装数据层：User.java

package com.cn.pojo;

import java.io.Serializable;

import javax.validation.constraints.Pattern;

public class User implements Serializable{

    private int id;
    @Pattern(regexp="\\w{2,12}",message="用户名必须在2-12位之间")
    private String username;
    @Pattern(regexp="\\w{6,12}",message="密码必须在6-12位之间")
    private String password;
    private String address;

    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getUsername() {
        return username;
    }
    public void setUsername(String username) {
        this.username = username;
    }
    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
    public String getAddress() {
        return address;
    }
    public void setAddress(String address) {
        this.address = address;
    }
    public User() {
        super();
        // TODO Auto-generated constructor stub
    }
    public User(String username, String password, String address) {
        super();
        this.username = username;
        this.password = password;
        this.address = address;
    }
}

9、dao数据持久层：

UserDAO.java：

package com.cn.dao;

import com.cn.pojo.User;

public interface UserDAO {

    public void saveUser(User user);

}

UserDAO.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.cn.dao.UserDAO">

    <insert id="saveUser" parameterType="user">
        insert into t_user(username,password,address) values(#{username},#{password},#{address})
    </insert>

</mapper>

10、servic业务逻辑层：

UserService.java

package com.cn.service;

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

import com.cn.dao.UserDAO;
import com.cn.pojo.User;

@Service("userService")
public class UserService implements UserServiceInterf{

    @Autowired
    private UserDAO userDAO;

    public void saveUser(User user) {
        userDAO.saveUser(user);
    }

    public UserDAO getUserDAO() {
        return userDAO;
    }

    public void setUserDAO(UserDAO userDAO) {
        this.userDAO = userDAO;
    }

}

UserServiceInterf.java

package com.cn.service;

import com.cn.pojo.User;

public interface UserServiceInterf {

    public void saveUser(User user);

}

11、action控制器层（负责业务逻辑层与表现层的交互）：UserAction.java

package com.cn.action;

import javax.annotation.Resource;
import javax.validation.Valid;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;

import com.cn.pojo.User;
import com.cn.service.UserServiceInterf;

@Controller
@RequestMapping("/")
public class UserAction {

    @Resource(name="userService")
    private UserServiceInterf userService;

    @RequestMapping("/regist")
    public String saveUser(@Valid @ModelAttribute("user") User user,BindingResult br){
        if(br.hasErrors()){
            return "regist.jsp";
        }else{
            userService.saveUser(user);
            return "welcome.jsp";
        }
    }

    public UserServiceInterf getUserService() {
        return userService;
    }

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

}

12、regist.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@taglib prefix="form" uri="http://www.springframework.org/tags/form"  %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">

    <title>My JSP 'regist.jsp' starting page</title>

    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="cache-control" content="no-cache">
    <meta http-equiv="expires" content="0">
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="This is my page">
    <!--
    <link rel="stylesheet" type="text/css" href="styles.css">
    -->
    <script type="text/javascript" src="js/jquery-1.12.3.min.js"></script>
    <script type="text/javascript">
        $(function(){
            alert("hello");
        });
    </script>

  </head>

  <body style="background: url(img/bground.jpg)">
    <form:form modelAttribute="user" action="regist.form">
        用户名:<input type="text" value="${user.username }" name="username"/><span style="color:red"><form:errors path="username"></form:errors></span><br/>
        密码:<input type="password" value="${user.password }" name="password"/><span style="color:red"><form:errors path="password"></form:errors></span><br/>
        地址:<input type="text" value="${user.address }" name="address"/><br/>
        <input type="submit" value="注册"/>
    </form:form>
  </body>
</html>