创建项目
File-New Project
选中左侧的Maven,选中右侧上方的Create from archetype,然后选中下方列表中的webapp,然后点击Next
在GroupId和ArtifactId中填入指定内容,点击Next
直接点Next
输入项目名称,Finish
Idea会自动开始下载所依赖的包,等待其完成。
项目结构
项目刚建好的时候是没有这些文件的,所以自己手动创建缺少的文件夹(包)
创建完后的项目框架:
修改pom.xml导入依赖包插件
依赖包需要如下:
spring framework
aspectj事务
c3p0数据源
servlet/jsp api
junit4
mybatis
mybatis spring整合
mysql driver
jstl
- <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.elin4it.ssm</groupId>
- <artifactId>ssm</artifactId>
- <packaging>war</packaging>
- <version>1.0-SNAPSHOT</version>
- <name>ssm Maven Webapp</name>
- <url>http://maven.apache.org</url>
- <build>
- <finalName>ssm</finalName>
- <plugins>
- <!--mybatis 逆向工程插件-->
- <plugin>
- <groupId>org.mybatis.generator</groupId>
- <artifactId>mybatis-generator-maven-plugin</artifactId>
- <version>1.3.2</version>
- <configuration>
- <verbose>true</verbose>
- <overwrite>true</overwrite>
- </configuration>
- </plugin>
- </plugins>
- </build>
- <properties>
- <spring.version>4.1.1.RELEASE</spring.version>
- </properties>
- <dependencies>
- <!-- springframe start -->
- <dependency>
- <groupId>org.springframework</groupId>
- <artifactId>spring-core</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-oxm</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-jdbc</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-aop</artifactId>
- <version>${spring.version}</version>
- </dependency>
- <dependency>
- <groupId>org.springframework</groupId>
- <artifactId>spring-context-support</artifactId>
- <version>${spring.version}</version>
- </dependency>
- <dependency>
- <groupId>org.springframework</groupId>
- <artifactId>spring-test</artifactId>
- <version>${spring.version}</version>
- </dependency>
- <!-- springframe end -->
- <!--aspectj start-->
- <dependency>
- <groupId>org.aspectj</groupId>
- <artifactId>aspectjweaver</artifactId>
- <version>1.8.6</version>
- </dependency>
- <dependency>
- <groupId>org.aspectj</groupId>
- <artifactId>aspectjrt</artifactId>
- <version>1.8.6</version>
- </dependency>
- <!--aspectj end-->
- <!--c3p0-->
- <dependency>
- <groupId>com.mchange</groupId>
- <artifactId>c3p0</artifactId>
- <version>0.9.5.1</version>
- </dependency>
- <!--servlet/jsp api start-->
- <dependency>
- <groupId>javax.servlet</groupId>
- <artifactId>servlet-api</artifactId>
- <version>2.5</version>
- </dependency>
- <dependency>
- <groupId>javax.servlet.jsp</groupId>
- <artifactId>jsp-api</artifactId>
- <version>2.1</version>
- <scope>provided</scope>
- </dependency>
- <!--servlet/jsp api end-->
- <!--junit4-->
- <dependency>
- <groupId>junit</groupId>
- <artifactId>junit</artifactId>
- <version>4.11</version>
- <scope>test</scope>
- </dependency>
- <!--mybatis-->
- <dependency>
- <groupId>org.mybatis</groupId>
- <artifactId>mybatis</artifactId>
- <version>3.3.0</version>
- </dependency>
- <!--mybatis spring整合-->
- <dependency>
- <groupId>org.mybatis</groupId>
- <artifactId>mybatis-spring</artifactId>
- <version>1.2.3</version>
- </dependency>
- <!--mysql driver-->
- <dependency>
- <groupId>mysql</groupId>
- <artifactId>mysql-connector-java</artifactId>
- <version>5.1.6</version>
- </dependency>
- <!--jstl-->
- <dependency>
- <groupId>jstl</groupId>
- <artifactId>jstl</artifactId>
- <version>1.2</version>
- </dependency>
- </dependencies>
- </project>
插件需要用到mybatis的逆向工程
完整的pom.xml代码清单:
使用mybatis逆向工程创建mapper接口和xml文件
user表结构
- DROP TABLE IF EXISTS `user`;
- /*!40101 SET @saved_cs_client = @@character_set_client */;
- /*!40101 SET character_set_client = utf8 */;
- CREATE TABLE `user` (
- `id` int(11) NOT NULL AUTO_INCREMENT,
- `username` varchar(32) NOT NULL COMMENT '用户名称',
- `birthday` date DEFAULT NULL COMMENT '生日',
- `sex` char(1) DEFAULT NULL COMMENT '性别',
- `address` varchar(256) DEFAULT NULL COMMENT '地址',
- PRIMARY KEY (`id`)
- ) ENGINE=InnoDB AUTO_INCREMENT=27 DEFAULT CHARSET=utf8;
在main/resources中创建generatorConfig.xml文件
generatorConfig.xml代码清单
- <?xml version="1.0" encoding="UTF-8"?>
- <!DOCTYPE generatorConfiguration
- PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
- "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
- <generatorConfiguration>
- <classPathEntry location="F:\jar\mysql\mysql-connector-java-5.1.7-bin.jar"/>
- <context id="testTables" targetRuntime="MyBatis3" >
- <commentGenerator>
- <!-- 是否去除自动生成的注释 true:是 : false:否 -->
- <property name="suppressAllComments" value="true" />
- </commentGenerator>
- <!--数据库连接的信息:驱动类、连接地址、用户名、密码 -->
- <!--<jdbcConnection driverClass="${jdbc.driver}"-->
- <!--connectionURL="${jdbc.url}"-->
- <!--userId="${jdbc.username}"-->
- <!--password="${jdbc.password}">-->
- <!--</jdbcConnection>-->
- <jdbcConnection driverClass="com.mysql.jdbc.Driver"
- connectionURL="jdbc:mysql://127.0.0.1:3306/mybatis?characterEncoding=UTF-8"
- userId="root"
- password="">
- </jdbcConnection>
- <!-- 默认false,把JDBC DECIMAL 和 NUMERIC 类型解析为 Integer,为 true时把JDBC DECIMAL 和
- NUMERIC 类型解析为java.math.BigDecimal -->
- <javaTypeResolver>
- <property name="forceBigDecimals" value="false" />
- </javaTypeResolver>
- <!-- targetProject:生成PO类的位置 -->
- <javaModelGenerator targetPackage="com.elin4it.ssm.pojo"
- targetProject="src\main\java">
- <!-- enableSubPackages:是否让schema作为包的后缀 -->
- <property name="enableSubPackages" value="false" />
- <!-- 从数据库返回的值被清理前后的空格 -->
- <property name="trimStrings" value="true" />
- </javaModelGenerator>
- <!-- targetProject:mapper映射文件生成的位置 -->
- <sqlMapGenerator targetPackage="com.elin4it.ssm.mapper"
- targetProject="src\main\resources">
- <!-- enableSubPackages:是否让schema作为包的后缀 -->
- <property name="enableSubPackages" value="false" />
- </sqlMapGenerator>
- <!-- targetPackage:mapper接口生成的位置 -->
- <javaClientGenerator type="XMLMAPPER"
- targetPackage="com.elin4it.ssm.mapper"
- targetProject="src\main\java">
- <!-- enableSubPackages:是否让schema作为包的后缀 -->
- <property name="enableSubPackages" value="false" />
- </javaClientGenerator>
- <!-- 指定数据库表 -->
- <table tableName="user"></table>
- <!-- 有些表的字段需要指定java类型
- <table schema="" tableName="">
- <columnOverride column="" javaType="" />
- </table> -->
- </context>
- </generatorConfiguration>
点击idea右侧的maven选项卡,选择其中的mybatis-generator,点击顶部的绿色按钮运行
如果没有出错的话,应该会自动生成mapper接口文件、xml文件、pojo文件。
db.properties文件
在resources/config中创建db.properties,该文件用来描述mysql连接信息
- jdbc.driver = com.mysql.jdbc.Driver
- jdbc.url = jdbc:mysql://127.0.0.1:3306/mybatis?characterEncoding=UTF-8
- jdbc.username = root
- jdbc.password =
SqlMapConfig文件
在resources/config/mybatis中创建SqlMapConfig.xml文件,该文件为Mybatis的配置文件,由于跟spring整合,所以一些基础配置文件都在spring中,在这里该文件中值需要写文件的框架
- <?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>
- </configuration>
SpringMVC配置文件
在resources/config/spring中创建springmvc.xml文件
- <?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.xsd">
- <!--自动扫描控制器-->
- <context:component-scan base-package="com.elin4it.ssm.controller"/>
- <!--视图渲染-->
- <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
- <property name="prefix" value="/WEB-INF/views/"/>
- <property name="suffix" value=".jsp"/>
- </bean>
- <!--控制器映射器和控制器适配器-->
- <mvc:annotation-driven></mvc:annotation-driven>
- </beans>
Spring IOC注入和事件控制
在resources/config/spring中创建applicationContext-dao.xml、application-service.xml、applicationContext-transaction.xml文件
applicationContext-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: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">
- <!--获取数据库配置文件-->
- <context:property-placeholder location="classpath:config/db.properties"/>
- <!--设置数据源c3p0-->
- <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
- <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="50"/>
- <property name="minPoolSize" value="2"/>
- <property name="maxIdleTime" value="60"/>
- </bean>
- <!--sqlsessionFactory bean-->
- <bean id="sqlSession" class="org.mybatis.spring.SqlSessionFactoryBean">
- <property name="configLocation" value="classpath:config/mybatis/SqlMapConfig.xml"/>
- <property name="dataSource" ref="dataSource"/>
- </bean>
- <!--自动扫描mapper接口,并注入sqlsession-->
- <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
- <property name="basePackage" value="com.elin4it.ssm.mapper"/>
- <property name="sqlSessionFactoryBeanName" value="sqlSession"/>
- </bean>
- </beans>
application-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"
- 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service-->
- <context:component-scan base-package="com.elin4it.ssm.service"/>
- </beans>
applicationContext-transaction.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:tx="http://www.springframework.org/schema/tx"
- xmlns:aop="http://www.springframework.org/schema/aop"
- xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd">
- <bean id="dataSourceTransactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
- <property name="dataSource" ref="dataSource"/>
- </bean>
- <tx:advice id="txAdvice" transaction-manager="dataSourceTransactionManager">
- <tx:attributes>
- <tx:method name="find*" propagation="REQUIRED"/>
- <tx:method name="update*" propagation="REQUIRED"/>
- <tx:method name="delete*" propagation="REQUIRED"/>
- <tx:method name="add*" propagation="REQUIRED"/>
- </tx:attributes>
- </tx:advice>
- <aop:config>
- <aop:advisor advice-ref="txAdvice" pointcut="execution(* cn.elinzhou.ixxs.service.*.*(..))"/>
- </aop:config>
- </beans>
web.xml文件
修改web.xml文件内容
- <?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">
- <!--设置spring 配置文件的位置-->
- <context-param>
- <param-name>contextConfigLocation</param-name>
- <param-value>classpath*:config/spring/applicationContext-*.xml</param-value>
- </context-param>
- <!--配置spring listener-->
- <listener>
- <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
- </listener>
- <!--解决POST乱码问题-->
- <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>
- </filter>
- <filter-mapping>
- <filter-name>CharacterEncodingFilter</filter-name>
- <url-pattern>/*</url-pattern>
- </filter-mapping>
- <!--springmvc前端控制器配置-->
- <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*:config/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>
- </web-app>
Service接口与实现
创建一个简单的service,只有一个查看所有用户列表的功能
UserService.java
- package com.elin4it.ssm.service;
- import com.elin4it.ssm.pojo.User;
- import java.util.List;
- /**
- * Created by 烽 on 2015/7/11.
- */
- public interface UserService {
- /**
- * 查找所有用户
- * @return
- * @throws Exception
- */
- List<User> findUser()throws Exception;
- }
实现类UserServiceImpl.java
- package com.elin4it.ssm.service;
- import com.elin4it.ssm.mapper.UserMapper;
- import com.elin4it.ssm.pojo.User;
- import org.springframework.beans.factory.annotation.Autowired;
- import org.springframework.stereotype.Service;
- import java.util.List;
- /**
- * Created by 烽 on 2015/7/11.
- */
- @Service
- public class UserServiceImpl implements UserService {
- //User接口
- @Autowired
- private UserMapper userMapper;
- public List<User> findUser() throws Exception {
- //调用mapper类中的selectByExample方法,如果传入类型为null,则表示无条件查找
- List<User> users = userMapper.selectByExample(null);
- return users;
- }
- }
Controller
- package com.elin4it.ssm.controller;
- import com.elin4it.ssm.pojo.User;
- import com.elin4it.ssm.service.UserService;
- import org.springframework.beans.factory.annotation.Autowired;
- import org.springframework.stereotype.Controller;
- import org.springframework.web.bind.annotation.RequestMapping;
- import org.springframework.web.servlet.ModelAndView;
- import java.util.List;
- /**
- * Created by 烽 on 2015/7/11.
- */
- @Controller
- @RequestMapping("/user")
- public class UserController {
- //service类
- @Autowired
- private UserService userService;
- /**
- * 查找所用用户控制器方法
- * @return
- * @throws Exception
- */
- @RequestMapping("/findUser")
- public ModelAndView findUser()throws Exception{
- ModelAndView modelAndView = new ModelAndView();
- //调用service方法得到用户列表
- List<User> users = userService.findUser();
- //将得到的用户列表内容添加到ModelAndView中
- modelAndView.addObject("users",users);
- //设置响应的jsp视图
- modelAndView.setViewName("findUser");
- return modelAndView;
- }
- }
视图
根据之前写的controller,返回的视图为findUser,所以在/WEB-INF/views中创建findUser.jsp文件,用来显示查询出来的结果
- <%--
- Created by IntelliJ IDEA.
- User: 烽
- Date: 2015/7/11
- Time: 19:47
- To change this template use File | Settings | File Templates.
- --%>
- <%@ page contentType="text/html;charset=UTF-8" language="java" %>
- <%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
- <html>
- <head>
- <title></title>
- </head>
- <body>
- <h1>findUser</h1>
- <table>
- <c:forEach items="${users}" var="u">
- <tr>
- <td>${u.id}</td>
- <td>${u.username}</td>
- <td>${u.birthday}</td>
- </tr>
- </c:forEach>
- </table>
- </body>
- </html>