在idea中使用SSM实例（eclipse大致一样）

spring + springmvc + mybatis使用实例

申明：开发工具是idea, 个人感觉在eclipse中，ssm更好搭建，可能是因为我刚开始使用idea,在搭建过程中，遇到不少问题。

准备工作： 在数据库中创建一个user表，具体字段可以自己控制

这里用到了mybatis-generator，根据数据库的表，自动生成对应的mapper,dao,实体类等，具体可以查看我的另一篇文章http://blog.csdn.net/fantasic_van/article/details/75269476

1、导包

<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>cn.van</groupId>  <artifactId>SSM</artifactId>  <packaging>war</packaging>  <version>1.0-SNAPSHOT</version>  <name>SSM Maven Webapp</name>  <url>http://maven.apache.org</url>  <properties>    <spring.version>4.2.3.RELEASE</spring.version>    <!-- mybatis版本号 -->    <mybatis.version>3.2.6</mybatis.version>    <!-- log4j日志文件管理包版本 -->    <slf4j.version>1.7.7</slf4j.version>    <log4j.version>1.2.17</log4j.version>  </properties>  <dependencies>    <dependency>      <groupId>junit</groupId>      <artifactId>junit</artifactId>      <version>3.8.1</version>      <scope>test</scope>    </dependency>    <!-- spring核心包 -->    <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>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-aspects</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>com.github.pagehelper</groupId>      <artifactId>pagehelper</artifactId>      <version>4.0.0</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-context</artifactId>      <version>${spring.version}</version>      <exclusions>        <exclusion>          <groupId>commons-logging</groupId>          <artifactId>commons-logging</artifactId>        </exclusion>      </exclusions>    </dependency>    <!-- mybatis核心包 -->    <dependency>      <groupId>org.mybatis</groupId>      <artifactId>mybatis</artifactId>      <version>${mybatis.version}</version>    </dependency>    <!-- mybatis/spring包 -->    <dependency>      <groupId>org.mybatis</groupId>      <artifactId>mybatis-spring</artifactId>      <version>1.2.2</version>    </dependency>    <!-- 导入Mysql数据库链接jar包 -->    <dependency>      <groupId>mysql</groupId>      <artifactId>mysql-connector-java</artifactId>      <version>5.1.30</version>    </dependency>    <!-- 日志文件管理包 -->    <dependency>      <groupId>log4j</groupId>      <artifactId>log4j</artifactId>      <version>${log4j.version}</version>    </dependency>    <!-- 格式化对象，方便输出日志 -->    <dependency>      <groupId>com.alibaba</groupId>      <artifactId>fastjson</artifactId>      <version>1.1.41</version>    </dependency>    <dependency>      <groupId>org.slf4j</groupId>      <artifactId>slf4j-api</artifactId>      <version>${slf4j.version}</version>    </dependency>    <dependency>      <groupId>org.slf4j</groupId>      <artifactId>slf4j-log4j12</artifactId>      <version>${slf4j.version}</version>    </dependency>    <!-- druid -->    <dependency>      <groupId>com.alibaba</groupId>      <artifactId>druid</artifactId>      <version>1.0.7</version>    </dependency>    <dependency>      <groupId>jstl</groupId>      <artifactId>jstl</artifactId>      <version>1.2</version>    </dependency>  </dependencies> <build>    <finalName>SSM</finalName>    <!-- mybatis generator插件-->    <plugins>      <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>    <!--解决idea打包读取不到java文件夹下的xml文件的问题-->    <resources>        <resource>          <directory>src/main/java</directory>          <includes>              <include>**/*.xml</include>          </includes>        </resource>    </resources>  </build></project>

2、添加spring和springmvc和mybatis的配置文件

• springmvc.xml

<?xml version="1.0" encoding="UTF-8"?><beans default-lazy-init="true"       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"       xmlns:aop="http://www.springframework.org/schema/aop"       xsi:schemaLocation="        http://www.springframework.org/schema/beans     http://www.springframework.org/schema/beans/spring-beans-4.0.xsd        http://www.springframework.org/schema/context   http://www.springframework.org/schema/context/spring-context-4.0.xsd        http://www.springframework.org/schema/mvc       http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd        http://www.springframework.org/schema/aop       http://www.springframework.org/schema/aop/spring-aop.xsd">    <!--在controller中支持springmvc的注解，不加的话将不支持，注入会失败-->    <mvc:annotation-driven/>    <context:component-scan base-package="cn.van.controller">        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>        <context:include-filter type="annotation" expression="org.springframework.web.bind.annotation.ControllerAdvice"/>    </context:component-scan>    <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">        <property name="prefix" value="/WEB-INF/jsp/"/>        <property name="suffix" value=".jsp"/>    </bean></beans>

• applicationContext.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"       xmlns:tx="http://www.springframework.org/schema/tx"       xsi:schemaLocation="http://www.springframework.org/schema/beans        http://www.springframework.org/schema/beans/spring-beans-4.1.xsd        http://www.springframework.org/schema/context        http://www.springframework.org/schema/context/spring-context-4.1.xsd        http://www.springframework.org/schema/mvc        http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd        http://www.springframework.org/schema/tx        http://www.springframework.org/schema/tx/spring-tx-4.1.xsd">    <import resource="spring-mybatis.xml"/>    <context:component-scan base-package="cn.van.*">        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>        <context:exclude-filter type="annotation" expression="org.springframework.web.bind.annotation.ControllerAdvice"/>    </context:component-scan></beans>

• spring-mybatis.xml， 这里用到了mybatis-generator逆向工程，生成相应的dao,mapper，实体类等文件，具体怎么操作，可以查看我的另一篇文章
  http://blog.csdn.net/fantasic_van/article/details/75269476

<?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:context="http://www.springframework.org/schema/context"       xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:aop="http://www.springframework.org/schema/aop"       xmlns:tx="http://www.springframework.org/schema/tx"       xsi:schemaLocation="http://www.springframework.org/schema/beans                        http://www.springframework.org/schema/beans/spring-beans-3.1.xsd                        http://www.springframework.org/schema/context                        http://www.springframework.org/schema/context/spring-context-3.1.xsd                        http://www.springframework.org/schema/tx                        http://www.springframework.org/schema/tx/spring-tx-3.1.xsd                        http://www.springframework.org/schema/mvc                        http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd                        http://www.springframework.org/schema/aop                        http://www.springframework.org/schema/aop/spring-aop-4.0.xsd">    <!-- 引入配置文件 -->    <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">        <property name="location" value="classpath:jdbc.properties"/>    </bean>    <!-- 使用阿里巴巴的durid 配置数据源 -->    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">        <property name="driverClassName" value="${driver}"/>        <property name="url" value="${url}"/>        <property name="username" value="${username}"/>        <property name="password" value="${password}"/>        <!--  初始化连接数-->        <property name="initialSize" value="${initialSize}"/>        <!-- 最大连接数-->        <property name="maxActive" value="${maxActive}"/>        <!--最大空闲数-->        <property name="maxIdle" value="${maxIdle}"/>        <!--最小空闲数-->        <property name="minIdle" value="${minIdle}"/>        <!--最大等待时间-->        <property name="maxWait" value="${maxWait}"/>    </bean>    <!-- spring和MyBatis完美整合，不需要mybatis的配置映射文件 -->    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">        <property name="dataSource" ref="dataSource" />        <!-- 自动扫描mapping.xml文件 -->        <property name="mapperLocations" value="classpath*:cn/van/mapping/*.xml"/>    </bean>    <!-- DAO接口所在包名，Spring会自动查找其下的类 -->    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">        <property name="basePackage" value="cn.van.dao" />        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>    </bean>    <!-- (事务管理)transaction manager, use JtaTransactionManager for global tx -->    <bean id="transactionManager"          class="org.springframework.jdbc.datasource.DataSourceTransactionManager">        <property name="dataSource" ref="dataSource" />    </bean>    <!-- 声明式事务 -->    <tx:annotation-driven transaction-manager="transactionManager"                          proxy-target-class="true" /></beans>

• jdbc.properties

driver=com.mysql.jdbc.Driverurl=jdbc:mysql://localhost:3306/vantestusername=rootpassword=123initialSize=0minIdle=1maxIdle=20maxActive=20maxWait=6000

• log4j.properties

### set log levels ####log4j.rootLogger = debug , stdout , D , Elog4j.rootLogger = debug , stdout , D###  output to the console ###log4j.appender.stdout = org.apache.log4j.ConsoleAppenderlog4j.appender.stdout.Target = System.outlog4j.appender.stdout.layout = org.apache.log4j.PatternLayout#log4j.appender.stdout.layout.ConversionPattern = %d{ABSOLUTE} %5p %c{ 1 }:%L - %m%nlog4j.appender.stdout.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [%c]-[%p] %m%n### Output to the log file ###log4j.appender.D = org.apache.log4j.DailyRollingFileAppenderlog4j.appender.D.File = ${springmvc.root}/WEB-INF/logs/log.loglog4j.appender.D.Append = truelog4j.appender.D.Threshold = DEBUG log4j.appender.D.layout = org.apache.log4j.PatternLayoutlog4j.appender.D.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [ %t:%r ] - [ %p ] %m%n### Save exception information to separate file ###log4j.appender.D = org.apache.log4j.DailyRollingFileAppenderlog4j.appender.D.File = ${springmvc.root}/WEB-INF/logs/error.log log4j.appender.D.Append = truelog4j.appender.D.Threshold = ERROR log4j.appender.D.layout = org.apache.log4j.PatternLayoutlog4j.appender.D.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [ %t:%r ] - [ %p ] %m%n

• web.xml

<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd" ><web-app>  <display-name>Archetype Created Web Application</display-name>  <!--加载spring容器-->  <context-param>    <param-name>contextConfigLocation</param-name>    <param-value>classpath:applicationContext.xml</param-value>  </context-param>   <!-- log4j-->  <context-param>    <param-name>log4jConfigLocation</param-name>    <param-value>classpath:log4j.properties</param-value>  <!--监听器 自定义applicationContext.xml的路径-->  <listener>    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>  </listener>  <servlet>    <servlet-name>springmvc</servlet-name>    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>    <init-param>      <param-name>contextConfigLocation</param-name>      <param-value>classpath:springmvc.xml</param-value>    </init-param>    <load-on-startup>1</load-on-startup>  </servlet>  <servlet-mapping>    <servlet-name>springmvc</servlet-name>    <url-pattern>/</url-pattern>  </servlet-mapping></web-app>

3、开始测试

• 写一个接口

public interface TestService {    void save(User user);}

• 实现类

@Servicepublic class TestServiceImpl implements TestService{//在idea中，注入这个mapper时，在原来的类上，需要加@Repository注解，否则将无法注入，具体原因我也不清楚，因为在eclipse中是不需要的    @Autowired    private UserMapper userDao;    public void save(User user) {        userDao.insert(user);        System.out.println("save=================");    }}

• 控制器

@Controllerpublic class Hello {    @Autowired    private TestService testService;    @RequestMapping("/test")    public String hello(){        return "hello";    }    @RequestMapping("save")    public String saveUser(){        User user = new User();        user.setId("xxxxx");        user.setUsername("yushan");        user.setPassword("33333");        user.setAge("18");        user.setTel("88888");        System.out.println(user.toString());        testService.save(user);        return "hello";    }}

• 启动项目，到页面请求
  

  

查看数据库，发现数据已经插入成功。
其他的方法就不一一测试了，ssm到此完成，最后说一下idea和eclipse中的不同点，
1、在idea中，自动生成的mapper.java，需要加上@Repository注解，否则无法注入
2、自动生成的mapper.xml文件位置问题，可以查看
http://blog.csdn.net/fantasic_van/article/details/75269476

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