使用idea2017搭建SSM框架(图文步骤)

<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/maven-v4_0_0.xsd">  <modelVersion>4.0.0</modelVersion>  <groupId>com.chatRobot</groupId>  <artifactId>ChatRobot</artifactId>  <packaging>war</packaging>  <version>1.0-SNAPSHOT</version>  <name>ChatRobot Maven Webapp</name>  <url>http://maven.apache.org</url>  <properties>    <!-- 设置项目编码编码 -->    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>    <!-- spring版本号 -->    <spring.version>4.3.5.RELEASE</spring.version>    <!-- mybatis版本号 -->    <mybatis.version>3.4.1</mybatis.version>  </properties>  <dependencies>    <!-- java ee -->    <dependency>      <groupId>javax</groupId>      <artifactId>javaee-api</artifactId>      <version>7.0</version>    </dependency>    <!-- 单元测试 -->    <dependency>      <groupId>junit</groupId>      <artifactId>junit</artifactId>      <version>4.12</version>    </dependency>    <!-- 实现slf4j接口并整合 -->    <dependency>      <groupId>ch.qos.logback</groupId>      <artifactId>logback-classic</artifactId>      <version>1.2.2</version>    </dependency>    <!-- JSON -->    <dependency>      <groupId>com.fasterxml.jackson.core</groupId>      <artifactId>jackson-databind</artifactId>      <version>2.8.7</version>    </dependency>    <!-- 数据库 -->    <dependency>      <groupId>mysql</groupId>      <artifactId>mysql-connector-java</artifactId>      <version>5.1.41</version>      <scope>runtime</scope>    </dependency>    <!-- 数据库连接池 -->    <dependency>      <groupId>com.mchange</groupId>      <artifactId>c3p0</artifactId>      <version>0.9.5.2</version>    </dependency>    <!-- MyBatis -->    <dependency>      <groupId>org.mybatis</groupId>      <artifactId>mybatis</artifactId>      <version>${mybatis.version}</version>    </dependency>    <!-- mybatis/spring整合包 -->    <dependency>      <groupId>org.mybatis</groupId>      <artifactId>mybatis-spring</artifactId>      <version>1.3.1</version>    </dependency>    <!-- Spring -->    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-core</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-beans</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-context</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-jdbc</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-tx</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-web</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-webmvc</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-test</artifactId>      <version>${spring.version}</version>    </dependency>  </dependencies>  <build>    <finalName>ChatRobot</finalName>    <plugins>      <plugin>        <groupId>org.apache.maven.plugins</groupId>        <artifactId>maven-compiler-plugin</artifactId>        <configuration>          <!-- 设置JDK版本 -->          <source>1.8</source>          <target>1.8</target>        </configuration>      </plugin>    </plugins>  </build></project>

<?xml version="1.0" encoding="UTF-8"?><configuration debug="true">  <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">    <encoder>      <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>    </encoder>  </appender>  <root level="debug">    <appender-ref ref="STDOUT"/>  </root></configuration>

jdbc.driver=com.mysql.jdbc.Driver#数据库地址jdbc.url=jdbc:mysql://xxxxxxxxx:3306/ChatRobot?useUnicode=true&characterEncoding=utf8#用户名jdbc.username=xxxx#密码jdbc.password=xxxxx#最大连接数c3p0.maxPoolSize=30#最小连接数c3p0.minPoolSize=10#关闭连接后不自动commitc3p0.autoCommitOnClose=false#获取连接超时时间c3p0.checkoutTimeout=10000#当获取连接失败重试次数c3p0.acquireRetryAttempts=2

<?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:tx="http://www.springframework.org/schema/tx"    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://www.springframework.org/schema/tx    http://www.springframework.org/schema/tx/spring-tx.xsd">  <!-- 扫描service包下所有使用注解的类型 -->  <context:component-scan base-package="com.chatRobot.service"/>  <!-- 配置数据库相关参数properties的属性：${url} -->  <context:property-placeholder location="classpath:jdbc.properties"/>  <!-- 数据库连接池 -->  <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">    <property name="driverClass" value="${jdbc.driver}"/>    <property name="jdbcUrl" value="${jdbc.url}"/>    <property name="user" value="${jdbc.username}"/>    <property name="password" value="${jdbc.password}"/>    <property name="maxPoolSize" value="${c3p0.maxPoolSize}"/>    <property name="minPoolSize" value="${c3p0.minPoolSize}"/>    <property name="autoCommitOnClose" value="${c3p0.autoCommitOnClose}"/>    <property name="checkoutTimeout" value="${c3p0.checkoutTimeout}"/>    <property name="acquireRetryAttempts" value="${c3p0.acquireRetryAttempts}"/>  </bean>  <!-- 配置SqlSessionFactory对象 -->  <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">    <!-- 注入数据库连接池 -->    <property name="dataSource" ref="dataSource"/>    <!-- 扫描model包 使用别名 -->    <property name="typeAliasesPackage" value="com.chatRobot.model"/>    <!-- 扫描sql配置文件:mapper需要的xml文件 -->    <property name="mapperLocations" value="classpath:mapper/*.xml"/>  </bean>  <!-- 配置扫描Dao接口包，动态实现Dao接口，注入到spring容器中 -->  <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">    <!-- 注入sqlSessionFactory -->    <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>    <!-- 给出需要扫描Dao接口包 -->    <property name="basePackage" value="com.chatRobot.dao"/>  </bean>  <!-- 配置事务管理器 -->  <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">    <!-- 注入数据库连接池 -->    <property name="dataSource" ref="dataSource"/>  </bean>  <!-- 配置基于注解的声明式事务 -->  <tx:annotation-driven transaction-manager="transactionManager"/></beans>

<?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    http://www.springframework.org/schema/context/spring-context.xsd    http://www.springframework.org/schema/mvc    http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">  <!-- 扫描web相关的bean -->  <context:component-scan base-package="com.chatRobot.controller"/>  <!-- 开启SpringMVC注解模式 -->  <mvc:annotation-driven/>  <!-- 静态资源默认servlet配置 -->  <mvc:default-servlet-handler/>  <!-- 配置jsp 显示ViewResolver -->  <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">    <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>    <property name="prefix" value="/WEB-INF/views/"/>    <property name="suffix" value=".jsp"/>  </bean></beans>

<?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_3_1.xsd"     version="3.1">  <display-name>ChatRobot</display-name>  <description>ChatRobot_Alpha_0.0.1</description>  <!-- 编码过滤器 -->  <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>  <!-- 配置DispatcherServlet -->  <servlet>    <servlet-name>SpringMVC</servlet-name>    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>    <!-- 配置springMVC需要加载的配置文件-->    <init-param>      <param-name>contextConfigLocation</param-name>      <param-value>classpath:spring-*.xml</param-value>    </init-param>    <load-on-startup>1</load-on-startup>    <async-supported>true</async-supported>  </servlet>  <servlet-mapping>    <servlet-name>SpringMVC</servlet-name>    <!-- 匹配所有请求，此处也可以配置成 *.do 形式 -->    <url-pattern>/</url-pattern>  </servlet-mapping>  <welcome-file-list>    <welcome-file>index.html</welcome-file>  </welcome-file-list></web-app>

CREATE TABLE `user` ( `id` int(11) NOT NULL AUTO_INCREMENT COMMENT '用户ID', `email` varchar(255) NOT NULL COMMENT '用户邮箱', `password` varchar(255) NOT NULL COMMENT '用户密码', `username` varchar(255) NOT NULL COMMENT '用户昵称', `role` varchar(255) NOT NULL COMMENT '用户身份', `status` int(1) NOT NULL COMMENT '用户状态', `regTime` datetime NOT NULL COMMENT '注册时间', `regIp` varchar(255) NOT NULL COMMENT '注册IP', PRIMARY KEY (`id`), UNIQUE KEY `email` (`email`) USING BTREE) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8;INSERT INTO `user` VALUES ('1', 'xxx', 'xxxxx', 'xxxxx', 'root', '0', '2017-03-28 09:40:31', '127.0.0.1');SET FOREIGN_KEY_CHECKS=1;

package com.chatRobot.controller;import javax.servlet.http.HttpServletRequest;import com.chatRobot.model.User;import com.chatRobot.service.IUserService;import com.fasterxml.jackson.databind.ObjectMapper;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import javax.annotation.Resource;import javax.servlet.http.HttpServletResponse;import java.io.IOException;@Controller@RequestMapping("/user")public class UserController {  @Resource  private IUserService userService;  @RequestMapping("/showUser.do")  public void selectUser(HttpServletRequest request, HttpServletResponse response) throws IOException {    request.setCharacterEncoding("UTF-8");    response.setCharacterEncoding("UTF-8");    long userId = Long.parseLong(request.getParameter("id"));    User user = this.userService.selectUser(userId);    ObjectMapper mapper = new ObjectMapper();    response.getWriter().write(mapper.writeValueAsString(user));    response.getWriter().close();  }}

package com.chatRobot.dao;import com.chatRobot.model.User;public interface IUserDao {  User selectUser(long id);}

package com.chatRobot.model;import java.util.Date;public class User {  private long id;  private String email;  private String password;  private String username;  private String role;  private int status;  private Date regTime;  private String regIp;  public long getId() {    return id;  }  public void setId(int id) {    this.id = id;  }  public String getEmail() {    return email;  }  public void setEmail(String email) {    this.email = email;  }  public String getPassword() {    return password;  }  public void setPassword(String password) {    this.password = password;  }  public String getUsername() {    return username;  }  public void setUsername(String username) {    this.username = username;  }  public String getRole() {    return role;  }  public void setRole(String role) {    this.role = role;  }  public int getStatus() {    return status;  }  public void setStatus(int status) {    this.status = status;  }  public Date getRegTime() {    return regTime;  }  public void setRegTime(Date regTime) {    this.regTime = regTime;  }  public String getRegIp() {    return regIp;  }  public void setRegIp(String regIp) {    this.regIp = regIp;  }}

package com.chatRobot.service;import com.chatRobot.model.User;public interface IUserService {  public User selectUser(long userId);}

package com.chatRobot.service.impl;import com.chatRobot.dao.IUserDao;import com.chatRobot.model.User;import com.chatRobot.service.IUserService;import org.springframework.stereotype.Service;import javax.annotation.Resource;@Service("userService")public class UserServiceImpl implements IUserService {  @Resource  private IUserDao userDao;  public User selectUser(long userId) {    return this.userDao.selectUser(userId);  }}

<?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"><!-- 设置为IUserDao接口方法提供sql语句配置 --><mapper namespace="com.chatRobot.dao.IUserDao">  <select id="selectUser" resultType="User" parameterType="long">    SELECT * FROM user WHERE id = #{id}  </select></mapper>

package com.chatRobot.dao;import com.chatRobot.model.User;import org.junit.Test;import org.junit.runner.RunWith;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.test.context.ContextConfiguration;import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;// 加载spring配置文件@RunWith(SpringJUnit4ClassRunner.class)@ContextConfiguration({"classpath:spring-mybatis.xml"})public class IUserDaoTest {  @Autowired  private IUserDao dao;  @Test  public void testSelectUser() throws Exception {    long id = 1;    User user = dao.selectUser(id);    System.out.println(user.getUsername());  }}

<!DOCTYPE html><html><head>  <meta charset="UTF-8">  <title>test</title></head><script>  function selectUser() {    var xmlhttp = new XMLHttpRequest();    xmlhttp.onreadystatechange = function () {      if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {        document.getElementById("test").innerHTML = xmlhttp.responseText;      }    }    xmlhttp.open("POST", "user/showUser.do", true);    xmlhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");    xmlhttp.send("id=1");  }</script><body><p id="test">Hello World!</p><button type="button" onclick="selectUser()">onclick test</button></body></html>