手把手搭建SSM框架

            搭建一个简单的SSM框架，分享给大家，以后自己也可以拿出来用

1.用maven项目管理工具搭建一个简单SSM的demo：工具Eclipse,Mysql-5.5,Tomcat-7.0,Maven-3.0,jdk-1.8

         （1） 新建一个

动态web项目，当然也可以建一个Java普通项目，

         （2）Dynamic Web Project

选择好你需要设置的配置和tomcat版本，点击下一步

可以添加一个resources文件夹，方便后面我们存放各种配置文件。点击下一步

记得把这个勾选上，是后面需要设置的一个web.xml文件。

            （3）这样我们就创建好了一个动态Web项目

 

                  

（4）右击项目名，选择下面的Configure==>Convert to Maven Project

点击完成就行，加入Maven项目管理工具能使我们在做项目省很多心思。

我们需要在这个pom.xml写我们需要的引入依赖包及版本，大家可以上maven仓库查找需要的版本http://mvnrepository.com/

        （5）依赖包

<dependencies>
		<!-- 单元测试 -->
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>4.11</version>
		</dependency>
		<!-- 1.日志 -->
		<!-- 实现slf4j接口并整合 -->
		<dependency>
			<groupId>ch.qos.logback</groupId>
			<artifactId>logback-classic</artifactId>
			<version>1.1.1</version>
		</dependency>
		<!-- 2.数据库 -->
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<version>5.1.38</version>
			<scope>runtime</scope>
		</dependency>
		<!-- DAO: MyBatis -->
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis</artifactId>
			<version>3.3.0</version>
		</dependency>
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis-spring</artifactId>
			<version>1.2.3</version>
		</dependency>
		<!-- 3.Servlet web -->
		<dependency>
			<groupId>taglibs</groupId>
			<artifactId>standard</artifactId>
			<version>1.1.2</version>
		</dependency>

		<dependency>

			<groupId>jstl</groupId>

			<artifactId>jstl</artifactId>
			<version>1.2</version>
		</dependency>		
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>javax.servlet-api</artifactId>
			<version>3.1.0</version>
		</dependency>
		<!-- 4.Spring -->
		<!-- 1)Spring核心 -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-core</artifactId>
			<version>4.1.7.RELEASE</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-beans</artifactId>
			<version>4.1.7.RELEASE</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context</artifactId>
			<version>4.1.7.RELEASE</version>
		</dependency>
		<!-- 2)Spring DAO层 -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-jdbc</artifactId>
			<version>4.1.7.RELEASE</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-tx</artifactId>
			<version>4.1.7.RELEASE</version>
		</dependency>
		<!-- 3)Spring web -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-web</artifactId>
			<version>4.1.7.RELEASE</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-webmvc</artifactId>
			<version>4.1.7.RELEASE</version>
		</dependency>
		<!-- 4)Spring test -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-test</artifactId>
			<version>4.1.7.RELEASE</version>
		</dependency>
		<!-- Map工具类 -->
		<dependency>
			<groupId>commons-collections</groupId>
			<artifactId>commons-collections</artifactId>
			<version>3.2</version>
		</dependency>
		<!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 -->
		<dependency>
			<groupId>org.apache.commons</groupId>
			<artifactId>commons-lang3</artifactId>
			<version>3.4</version>
		</dependency>		
	</dependencies>

 

   3.写入环境

    （1）jdbc.properties

 

jdbc.driverClassName=com.mysql.jdbc.Driver

jdbc.url=jdbc:mysql://localhost:3306/ssm2?useUnicode=true&characterEncoding=UTF-8&autoReconnect=true&failOverReadOnly=false&maxReconnects=10

jdbc.username=root

jdbc.password=123456

 

    （2）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>
    <!-- 配置全局属性 -->
    <settings>
        <!-- sql日志 -->
        <setting name="logImpl" value="LOG4J2" />

        <!-- 使用jdbc的getGeneratedKeys获取数据库自增主键值 -->
        <!-- <setting name="useGeneratedKeys" value="true" /> -->

        <!-- 使用列别名替换列名 默认:true -->
        <!-- <setting name="useColumnLabel" value="true" /> -->

        <!-- 开启驼峰命名转换:Table{create_time} -> Entity{createTime} -->
        <!-- <setting name="mapUnderscoreToCamelCase" value="true" /> -->
    </settings>
</configuration>

 

后面我是将spring配置文件分为3个部分，方便我们管理

    (3)spring-dao.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:aop="http://www.springframework.org/schema/aop"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:mybatis-spring="http://mybatis.org/schema/mybatis-spring"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd
		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://mybatis.org/schema/mybatis-spring http://mybatis.org/schema/mybatis-spring-1.2.xsd
		http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd">

    <!-- 配置整合mybatis过程 -->
    <!-- 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="org.apache.commons.dbcp.BasicDataSource">
        <!-- 配置连接池属性 -->
        <property name="driverClass" value="${jdbc.driverClassName}" />
        <property name="jdbcUrl" value="${jdbc.url}" />
        <property name="user" value="${jdbc.username}" />
        <property name="password" value="${jdbc.password}" />

<!-- 初始化连接大小 -->
        <property name="initialSize" value="${jdbc.initialSize}"/>
        <!-- 连接池最大数量 -->
        <property name="maxActive" value="${jdbc.maxActive}"/>
        <!-- 连接池最小空闲 -->
        <property name="minIdle" value="${jdbc.minIdle}"/>
        <!-- 获取连接最大等待时间 -->
        <property name="maxWait" value="${jdbc.maxWait}"/>
        <!--配置了maxWait之后，缺省启用公平锁，并发效率会有所下降，如果需要可以通过配置useUnfairLock属性为true使用非公平锁。 -->
        <property name="useUnfairLock" value="true"/>
        <property name="defaultReadOnly" value="false"/>
        <property name="timeBetweenLogStatsMillis" value="${jdbc.timeBetweenLogStatsMillis}"/>
    </bean>

    <!-- 配置sqlSessionFactory属性 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <property name="configLocation" value="classpath:mybatis/mybatis-config.xml"/>
        <!-- 自动扫描mapping.xml文件 -->
        <property name="mapperLocations" value="classpath:mapper/*.xml"/>        
    </bean>


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

 

(4)spring-service.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"
    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">
    <!-- 启用注解 -->
	<context:annotation-config />
	<!-- 配置扫描的包 -->
	<context:component-scan base-package="cn.ssm.service"/>

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

       

（5）spring-web.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"
	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">

	<!-- springMVC配置 -->
	<!-- 扫描注解 -->
	<context:component-scan base-package="cn.ssm.controller.*" />
	<!--访问静态资源 -->
	<mvc:annotation-driven />
	<mvc:resources mapping="/style/**" location="/style/" />
	<mvc:resources location="classpath:/META-INF/resources/"
		mapping="swagger-ui.html" />
	<!-- 配置试图解析器 -->
	<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="prefix" value="/WEB-INF/view/" />
		<property name="suffix" value=".jsp" />
	</bean>

	<bean id="freemarkerConfig" class="org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer">
		<property name="templateLoaderPath">
			<value>/WEB-INF/view/</value>
		</property>
	</bean>

	<!-- 文件上传 -->
	<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
		<!-- 设置默认编码 -->
		<property name="defaultEncoding" value="utf-8"></property>
		<!-- 上传图片最大大小5M -->
		<property name="maxUploadSize" value="5242440"></property>
	</bean>
</beans>

（6）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"
	version="3.1">
	<display-name>SSM</display-name>

	<!-- Session失效时间 -->
	<session-config>
		<session-timeout>30</session-timeout>
	</session-config>
	<!-- 首页 -->
	<welcome-file-list>
		<welcome-file>/home</welcome-file>
	</welcome-file-list>

	<!-- 解决post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>


	<!-- log4j2设置 -->
	<context-param>
		<param-name>log4jConfigLocation</param-name>
		<param-value>classpath:log4j2.xml</param-value>
	</context-param>
	<listener>
		<listener-class>org.apache.logging.log4j.web.Log4jServletContextListener</listener-class>
	</listener>


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

	<!-- mvc -->
	<servlet>
		<servlet-name>dispatcherServlet</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<init-param>
			<param-name>contextConfigLocation</param-name>
			<param-value>classpath:spring/springMVC.xml</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>

	<servlet-mapping>
		<servlet-name>dispatcherServlet</servlet-name>
		<url-pattern>/</url-pattern>
	</servlet-mapping>

	<!-- 发生错误时页面处理 -->
	<error-page>
		<error-code>403</error-code>
		<location>/404.jsp</location>
	</error-page>
	<error-page>
		<error-code>404</error-code>
		<location>/404.jsp</location>
	</error-page>
	<error-page>
		<error-code>500</error-code>
		<location>/error.jsp</location>
	</error-page>
	<error-page>
		<exception-type>java.lang.Throwable</exception-type>
		<location>/error.jsp</location>
	</error-page>
</web-app>

 

4.创建项目骨架

 

 

 

ps : 图片有个小错误，cn.smm => cn.ssm 

基本的结构，还可以分mapper包，放mybatis的映射文件

（1）User.java实体类

package cn.ssm.entity;

public class User {
	private Integer id;
	private String code;
	private String password;
	private String name;
	private String phone;
	public Integer getId() {
		return id;
	}
	public void setId(Integer id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		 = name;
	}
	public String getPhone() {
		return phone;
	}
	public void setPhone(String phone) {
		this.phone = phone;
	}
	
	public String getCode() {
		return code;
	}
	public void setCode(String code) {
		this.code = code;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}
	@Override
	public String toString() {
		return "User [id=" + id + ", code=" + code + ", name=" + name + ", phone=" + phone + "]";
	}	
}

     (2)UserDao.java用户接口

package cn.ssm.dao;

import cn.ssm.entity.User;

public interface UserDao {
    User login(@Param("code") String code,@Param("password") String password);//登陆

    int add(User user);//注册

    User query(int id);//查询

    User queryByCode(@Param("code") String code);//根据code查
}

    （3）UserDao.xml   UserMapper

        

<?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="cn.smm.dao.UserDao">
    <!-- 目的：为dao接口方法提供sql语句配置 -->
    <!-- 登陆验证 -->
    <select id="login">
    	SELECT            
            *
        FROM
            user
      	WHERE
      		code=#{code,jdbcType=VARCHAR}
      	AND
      		password=#{password,jdbcType=VARCHAR}
    </select>
    <!-- 查询 -->
    <select id="query" resultType="User">
        SELECT
            *            
        FROM
            user
      	WHERE
      		id=#{id,jdbcType=INTEGER}
    </select>
    
    <!-- 查询 -->
    <select id="queryByCode" resultType="User">
        SELECT
            *            
        FROM
            user
      	WHERE
      		id=#{id,jdbcType=INTEGER}
    </select>
    <!-- 添加用户 -->	
    <insert id="add" parameterType="cn.ssm.entity.User">
        insert into
        	user(        	
        	code,
        	password,
        	name,
        	phone)
        values(            
            code=#{code,jdbcType=VARCHAR},
            password=#{password,jdbcType=VARCHAR},
            name=#{name,jdbcType=VARCHAR},
            phone=#{phone,jdbcType=VARCHAR})         
    </insert>	
</mapper>

        (4)UserService.java 

package cn.ssm.service;

import cn.ssm.entity.User;

public interface UserService {
	/** 
     * 登录验证 
     * @param account 登录账号 
     * @param userPassword 密码 
     * @return  validate true通过 false未通过 
     * @throws Exception 
     */  
    User login(String code, String password) throws Exception; 
    /**
     * 注册
     * @param user
     */
    int add(User user)throws Exception;
    /**
     * ID查询
     * @param id
     * @return
     * @throws Exception
     */
    User queryById(int id)throws Exception;

    /**
     * code查询
     * @param code
     * @return
     * @throws Exception
     */
    User queryByCode(String code)throws Exception;
}

        (5)UserServiceImpl.java

package cn.ssm.service;


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

import cn.ssm.dao.UserDao;
import cn.ssm.entity.User;

public class UserServiceImpl implements UserService {
	@Autowired
	UserDao userDao;
	@Override
	public User login(String code, String password) throws Exception {
		
		return userDao.login(code, password);
	}

	@Override
	public int add(User user) throws Exception {
		
		return userDao.add(user);
	}

	@Override
	public User queryById(int id) throws Exception {
		
		return userDao.query(id);
	}

        @Override
	public User queryByCode(String code) throws Exception {
		
		return userDao.queryByCode(code);
	}

}

        (6)UserCtroller.java

package cn.ssm.web;

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 cn.ssm.entity.User;
import cn.ssm.service.UserService;

@Controller
@RequestMapping("/api/user")
public class UserCtroller {
    @Autowired
    UserService userService;

    @RequestMapping(value = "login", method = RequestMethod.POST)
    public ModelAndView login(String code, String password) throws Exception {
        System.out.println("用户登陆" + code + password);
        ModelAndView modelAndView = new ModelAndView();
        User user = userService.login(code, password);
        String url = "/home";
        modelAndView.addObject("user", user);
        modelAndView.addObject("url", url);
        return modelAndView;
    }

    @RequestMapping(value = "add", method = RequestMethod.POST)
    public ModelAndView add(@RequestBody User user) throws Exception {
        ModelAndView modelAndView = new ModelAndView();
        System.out.println("用户注册" + user.getCode() + user.getPassword());
        User byCode = userService.queryByCode(user.getCode());
        if (byCode != null) {
            String url = "/regist";
            modelAndView.addObject("msg", "用户编码已存在");
            modelAndView.addObject("url", url);
            return modelAndView;
        }
        int addUser = userService.add(user);
        if (addUser > 0) {
            User user = userService.login(code, password);
            String url = "/home";
            modelAndView.addObject("user", user);
            modelAndView.addObject("url", url);
            return modelAndView;
        } else {
            return null;
        }
    }

    @RequestMapping(value = "query", method = RequestMethod.GET)
    public ModelAndView queryById(int id) throws Exception {
        ModelAndView modelAndView = new ModelAndView();
        System.out.println("查询id" + id);
        User user = userService.queryById(id);
        if (user != null) {
            User user = userService.login(code, password);
            String url = "/show";
            modelAndView.addObject("user", user);
            modelAndView.addObject("url", url);
            return modelAndView;
        } else {
            return null;
        }
    }
}

JSP页面

注册

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>用户注册</title>
</head>
<body>
	<form action="${pageContext.request.contextPath }/user/regist.action">
		<table border="1">
			<tr>
				<td>用户名</td>
				<td><input type="text" name="name"></td>
			</tr>
			<tr>
				<td>密码</td>
				<td><input type="text" name="password"></td>
			</tr>
			<tr>
				<td><input type="submit" value="注册"></td>
			</tr>
		</table>
	</form>
</body>
</html>

登陆

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>用户登录</title>
</head>
<body>
	<form action="${pageContext.request.contextPath }/user/login.action">
		<table border="1">
			<tr>
				<td>用户名</td>
				<td><input type="text" name="name"></td>
			</tr>
			<tr>
				<td>密码</td>
				<td><input type="text" name="password"></td>
			</tr>
			<tr>
				<td><input type="submit" value="登录"></td>
			</tr>
		</table>
	</form>
</body>
</html>

登陆成功

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>登录成功</title>
</head>
<body>
	${msg }</br>
	<a href="${pageContext.request.contextPath }/login.jsp">去登录</a>
</body>
</html>