1.SSM整合_单表的增删改查

1. 目标：增删改查
2. 环境：Maven+Eclipse+Tomcat7+JDK7
3. 思维导图：
   
   
4. 表结构
   
   
5. 目录结构
   
   
6. 依赖

 <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
    <!-- SpringMVC -->
    <!-- 1)核心组件 -->
    <dependency>
    	<groupId>org.springframework</groupId>
		<artifactId>spring-core</artifactId>
		<version>4.3.10.RELEASE</version>
    </dependency>
    <dependency>
    	<groupId>org.springframework</groupId>
		<artifactId>spring-context</artifactId>
		<version>4.3.10.RELEASE</version>
    </dependency>
    <dependency>
    	<groupId>org.springframework</groupId>
		<artifactId>spring-beans</artifactId>
		<version>4.3.10.RELEASE</version>
    </dependency>

    <!-- spring dao层组件 -->
   	<dependency>
   		<groupId>org.springframework</groupId>
   		<artifactId>spring-jdbc</artifactId>
   		<version>4.3.10.RELEASE</version>
   	</dependency>
   	<dependency>
   		<groupId>org.springframework</groupId>
   		<artifactId>spring-tx</artifactId>
   		<version>4.3.10.RELEASE</version>
   	</dependency>
    <!-- spring web组件  -->
   	<dependency>
   		<groupId>org.springframework</groupId>
   		<artifactId>spring-web</artifactId>
   		<version>4.3.10.RELEASE</version>
   	</dependency>
   	<dependency>
   		<groupId>org.springframework</groupId>
   		<artifactId>spring-webmvc</artifactId>
   		<version>4.3.10.RELEASE</version>
   	</dependency>

    <!-- mybatis和spring整合的依赖 -->
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis</artifactId>
        <version>3.4.2</version>
    </dependency>
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis-spring</artifactId>
        <version>1.3.1</version>
    </dependency>
    <!-- 数据库连接池 和驱动-->
    <dependency>
	    <groupId>c3p0</groupId>
	    <artifactId>c3p0</artifactId>
	    <version>0.9.1.2</version>
    </dependency>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.1.43</version>
    </dependency>

    <!-- jstl servlet-api -->
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>jstl</artifactId>
        <version>1.2</version>
    </dependency>
    <dependency>
	    <groupId>taglibs</groupId>
	    <artifactId>standard</artifactId>
	    <version>1.1.2</version>
	</dependency>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>javax.servlet-api</artifactId>
        <version>3.1.0</version>
        <scope>provided</scope>
    </dependency>

    <!-- spring单元测试 -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-test</artifactId>
        <version>4.3.10.RELEASE</version>
        <scope>test</scope>
    </dependency>

	<!-- JSON包 -->
	<dependency>
	    <groupId>net.sf.json-lib</groupId>
	    <artifactId>json-lib</artifactId>
	    <version>2.4</version>
	    <classifier>jdk15</classifier>
	</dependency>
  </dependencies>

页面上引入了Bootstrap，只是简单的使用的一下，复杂的我并不太会。下载的Bootstrap的包直接复制到webapp目录下就行，除此之外还有JQuery的包。

1. 实体类

public class User {
	private int id;
	private String userName;
	private String age;
	//省略getter和setter
	...
}

1. 接口和映射文件

接口：
public interface UserMapper {

	public void addUser(User user);

	public void deleteUser(String name);

	public void updateUser(User user);

	public User getUser(String name);

	public List<User> getUser2(String name);

	public List<User> getAllUser();
}
映射文件：
<!-- namespace的属性值命名规则：文件所在的包路径+文件名 -->
<mapper namespace="com.demo.mapper.UserMapper">
	<!-- 添加 -->
	<select id="addUser" parameterType="User">
		insert into t_user(t_id,t_name,t_age) value(#{id},#{userName},#{age})
	</select>

	<!-- 删除 -->
	<delete id="deleteUser" parameterType="String">
		delete from t_user where t_name = #{name}
	</delete>

	<!-- 修改 -->
	<update id="updateUser" parameterType="User">
		update t_user set t_name = #{userName}, t_age = #{age} where t_id = #{id}
	</update>

	<!-- 查找 -->
	<select id="getUser" parameterType="String" resultType="User">
		select t_id id, t_name userName, t_age age from t_user where t_name = #{id}
	</select>

	<!-- 模糊查询 -->
	<select id="getUser2" parameterType="String" resultType="User">
		select t_id id, t_name userName, t_age age from t_user where t_name like "%"#{name}"%"
	</select>

	<!-- 查找所有 -->
	<select id="getAllUser" resultType="User">
		select t_id id, t_name userName, t_age age from t_user
	</select>

</mapper>

1. service和其实现类

service层：
public interface IUserService {

	public void addUser(User user);

	public void delectUser(String name);

	public void updateUser(User user);

	public User getUser(String name);

	public List<User> getUser2(String name);

	public List<User> getAll();

}
实现类：
@Service
@Transactional
public class UserServiceImp implements IUserService{

	@Resource
	private UserMapper mapper;

	@Override
	public void addUser(User user) {
		mapper.addUser(user);
	}

	@Override
	public void delectUser(String name) {
		mapper.deleteUser(name);
	}

	@Override
	public void updateUser(User user) {
		mapper.updateUser(user);
	}

	@Override
	public User getUser(String name) {
		return mapper.getUser(name);
	}

	@Override
	public List<User> getAll() {
		return mapper.getAllUser();
	}

	@Override
	public List<User> getUser2(String name) {
		return mapper.getUser2(name);
	}

}

1. controller

@Controller
@RequestMapping("/user")
public class UserController {

	@Autowired
	private IUserService userService;

	/**
	 * 跳转到添加页面
	 * @return
	 */
	@RequestMapping("/toAddUser")
	public String toAddUser(){
		return "adduser";
	}

	/**
	 * 添加用户
	 */
	@RequestMapping("/addUser")
	public String addUser(User user,Model model){
		userService.addUser(user);
		return "redirect:/user/getAll";
	}

	/**
	 * 删除用户
	 */
	@RequestMapping("/deleteUser")
	public String deleteUser(String name){
		userService.delectUser(name);
		return "redirect:/user/getAll";
	}

	/**
	 * 跳转到修改页面，修改页面和新增页面共用一个JSP
	 * @param name
	 * @param request
	 * @return
	 */
	@RequestMapping("/toUpdateUser")
	public String toUpdateUser(String name, HttpServletRequest request){
		User user = userService.getUser(name);
		request.setAttribute("user", user);
		return "adduser";
	}
	/**
	 * 修改用户:forward可以传参数，redirect不能传参数
	 */
	@RequestMapping("/updateUser")
	public String updateUser(User user,HttpServletRequest request){
		userService.updateUser(user);
		return "redirect:/user/getAll";
	}

	/**
	 * 查询
	 */
	@RequestMapping("/getUser")
	public String getUser(String name, HttpServletRequest request){
		User user = userService.getUser(name);
		request.setAttribute("user", user);
		return "/userlist";
	}

	/**
	 * 模糊查询
	 * @param name
	 * @return
	 */
	@RequestMapping("/getUser2")
	public String getUser2(String name, HttpServletRequest request){
		List list = userService.getUser2(name);
		request.setAttribute("userList", list);
		return "/userlist";
	}

	/**
	 * 获取所有的用户
	 */
	@RequestMapping("/getAll")
	public String getAll(HttpServletRequest request){
		List<User> userList = userService.getAll();
		request.setAttribute("userList", userList);
		return "/userlist";
	}

}

1. 配置文件_web.xml

web.xml
<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"
		id="WebApp_ID" version="3.0">
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>classpath:spring.xml</param-value>
	</context-param>
	<!--2.加载spring的配置文件 -->
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>

	<!--1. 加载springmvc的配置文件 -->
	<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-mvc.xml</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>
	<servlet-mapping>
		<servlet-name>springDispatcherServlet</servlet-name>
		<url-pattern>/</url-pattern>
	</servlet-mapping>

	<!-- 3.编码方式 -->
	<filter>
		<filter-name>CharacterEncoding</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>CharacterEncoding</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>
	<welcome-file-list>
		<welcome-file>index.jsp</welcome-file>
	</welcome-file-list>
</web-app>

1. spring配置文件

	<!-- 1.扫描Service包 -->
	<context:component-scan base-package="com.demo.service"></context:component-scan>
	<context:component-scan base-package="com.demo1.service"></context:component-scan>

	<!-- 2.引用数据库配置文件  -->
	<context:property-placeholder location="classpath:jdbc.properties"/>

	<!-- 3.数据库连接池 -->
	<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
		<property name="user" value="${jdbc.username}"></property>
		<property name="password" value="${jdbc.password}"></property>
		<property name="driverClass" value="${jdbc.driverClass}"></property>
		<property name="jdbcUrl" value="${jdbc.url}"></property>
	</bean>

	<!-- 4.Spring 和 Mybatis整合 -->
	<bean id="sqlSession" class="org.mybatis.spring.SqlSessionFactoryBean">
		<!-- 注入数据源 -->
		<property name="dataSource" ref="dataSource"></property>
		<!-- 加载mybatis的全局文件 -->
		<property name="configLocation" value="classpath:mybatis-cfg.xml"></property>
		<!-- 扫描mybatis的映射文件，此处可以不配置，但是需要在Mybatis的全局配置文件中配置<mappers>标签，二选一
			   一个目录：classpath:com/demo/mapper/*.xml，多个目录：classpath*:com/demo*/mapper/*.xml
		 -->
		<property name="mapperLocations" value="classpath*:com/demo*/mapper/*.xml"></property>
		<!-- 配置别名，多个包之间用逗号或分号隔开 -->
		<property name="typeAliasesPackage" value="com.demo.model;com.demo1.model"></property>
	</bean>

	<!-- 5.mybatis自动扫描加载SQL映射文件/接口：MapperScannerConfigurer sqlSessionFactory,
		   basePackage: 指定SQL映射文件/接口所在的包（自动扫描）
	-->
	<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
		<!-- 扫描接口 ,扫描多个接口使用逗号隔开-->
		<property name="basePackage" value="com.demo.mapper,com.demo1.mapper"></property>
		<property name="sqlSessionFactoryBeanName" value="sqlSession"></property>
	</bean>

	<!-- 6.事务管理 DataSourceTransactionManager dataSource：引用数据源-->
	<bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<property name="dataSource" ref="dataSource"></property>
	</bean>

	<!-- 7.声明式事务 -->
	<tx:annotation-driven transaction-manager="txManager"/>

1. springmvc配置文件

	<!-- 扫描Controller层 -->
	<context:component-scan base-package="com.demo.controller"></context:component-scan>
	<context:component-scan base-package="com.demo1.controller"></context:component-scan>

	<!-- 会自动注册RequestMappingHandlerMapping与RequestMappingHandlerAdapter两个Bean,
		HandlerMapping的实现类的作用：
		实现类RequestMappingHandlerMapping，它会处理@RequestMapping 注解，并将其注册到请求映射表中。
		HandlerAdapter的实现类的作用：
		实现类RequestMappingHandlerAdapter，则是处理请求的适配器，确定调用哪个类的哪个方法，并且构造方法参数，返回值。
		当配置了mvc:annotation-driven/后，Spring就知道了我们启用注解驱动。然后Spring通过context:component-scan/标签的配置，
		会自动为我们将扫描到的@Component，@Controller，@Service，@Repository等注解标记的组件注册到工厂中，来处理我们的请求。
	 	如果不配置该标签则，spring默认注册这两个Bean，但是如果为了不拦截静态资源，而配置了<mvc:default-servlet-handler/>标签，
	 	此标签使spring不再默认注册RequestMappingHandlerAdapter的bean，这个bean能够处理@RequestMapping这个注解。
	 	所以单独的使用<mvc:default-servlet-handler/>标签，会导致@RequestMapping失效
	 -->
	<mvc:annotation-driven/>
	<!-- 表示上述配置的 css 文件不属 viewResolver 解析 -->
	<mvc:default-servlet-handler/>

	<!-- 配置 springMVC 不拦截的静态资源 -->
	<!-- css 下所有文件都映射到 /bootstrap/css/ (*: 只处理文件夹下一级; **: 文件夹下多级) -->
	<mvc:resources mapping="/css/**" location="/bootstrap-3.3.7-dist/css/"/>
	<mvc:resources mapping="/js/**" location="/bootstrap-3.3.7-dist/js/"/>

	<!-- 配置视图解析器 -->
	<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="prefix" value="/WEB-INF/jsp/"></property>
		<property name="suffix" value=".jsp"></property>
	</bean>

1. mybatis-cfg.xml(可有可无)

<configuration>
<!-- mybatis配置文件 -->
	<!-- 别名,Spring配置文件中配置了typeAliasesPackage属性后，此处不需要配置 -->
	<!-- <typeAliases>
		<package name="com.demo.model"/>
		<package name="com.demo1.model"/>
	</typeAliases> -->

	<!-- Spring配置文件中配置了MapperLocation属性后，此处不需要配置 -->
	<!-- <mappers>
		<mapper resource="com/demo/mapper/userMapper.xml"/>
	</mappers> -->
</configuration>

1. jdbc.properties

jdbc.url=jdbc:mysql://localhost:3306/ssm_test?useUnicode=true&characterEncoding=utf8
jdbc.driverClass=com.mysql.jdbc.Driver
jdbc.username=root
jdbc.password=root

1. log4j.properties

### set log levels ###
log4j.rootLogger = info , Console , D
#Console
log4j.appender.Console=org.apache.log4j.ConsoleAppender
log4j.appender.Console.layout=org.apache.log4j.PatternLayout
log4j.appender.Console.layout.ConversionPattern=%d [%t] %-5p [%c] - %m%n
log4j.logger.java.sql.ResultSet=INFO
log4j.logger.org.apache=INFO
log4j.logger.java.sql.Connection=INFO
log4j.logger.java.sql.Statement=INFO
log4j.logger.java.sql.PreparedStatement=INFO
#output2file
log4j.appender.D = org.apache.log4j.DailyRollingFileAppender
log4j.appender.D.File = D\:/logs/log.log
log4j.appender.D.Append = true
log4j.appender.D.Threshold = INFO \#\# \u00E8\u00BE\u0093\u00E5\u0087\u00BAinfo\u00E7\u00BA\u00A7\u00E5\u0088\u00AB\u00E4\u00BB\u00A5\u00E4\u00B8\u008A\u00E7\u009A\u0084\u00E6\u0097\u00A5\u00E5\u00BF\u0097
log4j.appender.D.layout = org.apache.log4j.PatternLayout
log4j.appender.D.layout.ConversionPattern = %-d{yyyy-MM-dd HH\:mm\:ss} [ %t\:%r ] - [ %p ] %m%n

17.jsp页面

列表页：userlist.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jstl/core_rt"%>
<%
	String path = request.getContextPath();
	String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path;
	request.setAttribute("basePath", basePath);
%>
<!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">
<!-- 引入CSS样式 -->
<link rel="stylesheet" href="${pageContext.request.contextPath }/css/bootstrap.min.css">
<link rel="stylesheet" href="${pageContext.request.contextPath }/css/bootstrap-theme.css">
<!-- 引入Bootstrap文件，JS包放在Bootstrap包上 -->
<script type="text/javascript" src="${pageContext.request.contextPath }/js/jquery-3.2.1.min.js"></script>
<script type="text/javascript" src="${pageContext.request.contextPath }/js/bootstrap.min.js"></script>
<title></title>
</head>
<body>
	<div>
		<h2 align="center">信息</h2>
	</div>
	<div align="center" style="margin-bottom: 50px">
		<form action="${basePath }/user/getUser2" method="post">
			<input type="text" name="name"><input type="submit" value="Search">
		</form>
	</div>
	<div align="center">
		<a href="${basePath }/user/toAddUser">新增</a>
	</div>
	<div class="container" align="center" style="margin-bottom: 50px">
		<table class="table  table-bordered">
			<tr>
				<th>序号</th>
				<th>ID</th>
				<th>姓名</th>
				<th>年龄</th>
				<th>操作</th>
			</tr>
			<c:forEach items="${userList}" var="user" varStatus="status">
				<tr>
					<td>${status.count }</td>
					<td>${user.id }</td>
					<td>${user.userName }</td>
					<td>${user.age }</td>
					<td><a href="${basePath }/user/toUpdateUser?name=${user.userName }">修改</a><a href="${basePath }/user/deleteUser?name=${user.userName }">删除</a></td>
				</tr>
			</c:forEach>
		</table>
	</div>
</body>
</html>
添加修改页：adduser.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jstl/core_rt" prefix="c" %>
<%
	String path = request.getContextPath();
	String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path;
	request.setAttribute("basePath", basePath);
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<!-- 引入CSS样式 -->
<link rel="stylesheet" href="${pageContext.request.contextPath }/css/bootstrap.min.css">
<link rel="stylesheet" href="${pageContext.request.contextPath }/css/bootstrap-theme.css">
<!-- 引入Bootstrap文件，JS包放在Bootstrap包上 -->
<script type="text/javascript" src="${pageContext.request.contextPath }/js/jquery-3.2.1.min.js"></script>
<script type="text/javascript" src="${pageContext.request.contextPath }/js/bootstrap.min.js"></script>
<title></title>
</head>
<body>

	<div  align="center">
		<c:if test="${empty user }">
			<h2>新增</h2>
		</c:if>
		<c:if test="${not empty user }">
			<h2>修改</h2>
		</c:if>
		<c:if test="${empty user }">
			<form action="${basePath }/user/addUser" method="post" >
		</c:if>
		<c:if test="${not empty user }">
			<form action="${basePath }/user/updateUser" method="post" >
		</c:if>
			序号：<input type="text" name="id" value="${user.id }">
			<br>
			姓名：<input type="text" name="userName" value="${user.userName }">
			<br>
			年龄：<input type="text" name="age" value="${user.age }">
			<br>
			<button type="submit" class="btn btn-default">提交</button>
		</form>
	</div>
</body>
</html>

源码：链接: https://pan.baidu.com/s/1x7hIvRhmiCh1gkzaCwLu8Q 提取码: 8ci5