在idea中使用SSM实例（eclipse大致一样）

我就是我 2022-06-12 01:21 48阅读 0赞

> ##### 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][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.version>3.2.6</mybatis.version>
        
        <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>
    
        
        <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>
    
        
        <dependency>
          <groupId>org.mybatis</groupId>
          <artifactId>mybatis</artifactId>
          <version>${mybatis.version}</version>
        </dependency>
        
        <dependency>
          <groupId>org.mybatis</groupId>
          <artifactId>mybatis-spring</artifactId>
          <version>1.2.2</version>
        </dependency>
    
        
        <dependency>
          <groupId>mysql</groupId>
          <artifactId>mysql-connector-java</artifactId>
          <version>5.1.30</version>
        </dependency>
    
        
        <dependency>
          <groupId>log4j</groupId>
          <artifactId>log4j</artifactId>
          <version>${log4j.version}</version>
        </dependency>
    
        
        <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>
        
        <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>
        
        <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>
    
        
        <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 ">
    
        
        <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

*  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][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">
    
        
        <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
            <property name="location" value="classpath:jdbc.properties"/>
        </bean>
    
        
        <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}"/>
            
            <property name="initialSize" value="${initialSize}"/>
            
            <property name="maxActive" value="${maxActive}"/>
            
            <property name="maxIdle" value="${maxIdle}"/>
            
            <property name="minIdle" value="${minIdle}"/>
            
            <property name="maxWait" value="${maxWait}"/>
        </bean>
    
        
        <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
            <property name="dataSource" ref="dataSource" />
            
            <property name="mapperLocations" value="classpath*:cn/van/mapping/*.xml"/>
        </bean>
    
    
        
        <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
            <property name="basePackage" value="cn.van.dao" />
            <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
        </bean>
    
        
        <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
            <property name="dataSource" ref="dataSource" />
        </bean>
    
        
        <tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="true" />
    </beans>

*  jdbc.properties

driver=com.mysql.jdbc.Driver
    url=jdbc:mysql://localhost:3306/vantest
    username=root
    password=123
    initialSize=0
    minIdle=1
    maxIdle=20
    maxActive=20
    maxWait=6000

*  log4j.properties

### set log levels ###
    #log4j.rootLogger = debug , stdout , D , E
    log4j.rootLogger = debug , stdout , D
    
    ### output to the console ###
    log4j.appender.stdout = org.apache.log4j.ConsoleAppender
    log4j.appender.stdout.Target = System.out
    log4j.appender.stdout.layout = org.apache.log4j.PatternLayout
    #log4j.appender.stdout.layout.ConversionPattern = %d{ABSOLUTE} %5p %c{ 1 }:%L - %m%n
    log4j.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.DailyRollingFileAppender
    log4j.appender.D.File = ${springmvc.root}/WEB-INF/logs/log.log
    log4j.appender.D.Append = true
    log4j.appender.D.Threshold = DEBUG 
    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
    
    ### Save exception information to separate file ###
    log4j.appender.D = org.apache.log4j.DailyRollingFileAppender
    log4j.appender.D.File = ${springmvc.root}/WEB-INF/logs/error.log 
    log4j.appender.D.Append = true
    log4j.appender.D.Threshold = ERROR 
    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

*  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>
    
      
      <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
      </context-param>
    
       
      <context-param>
        <param-name>log4jConfigLocation</param-name>
        <param-value>classpath:log4j.properties</param-value>
    
      
      <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

@Service
    public 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

@Controller
    public 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  
    ![这里写图片描述][SouthEast]
    
    ![这里写图片描述][SouthEast 1]

> 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][http_blog.csdn.net_fantasic_van_article_details_75269476]
> 
> 欢迎技术交流 QQ 361552730

[http_blog.csdn.net_fantasic_van_article_details_75269476]: http://blog.csdn.net/fantasic_van/article/details/75269476
[SouthEast]: /images/20220612/255779c47934400e806801d5b2926d82.png
[SouthEast 1]: /images/20220612/cad6df7944ab4553ad056524340e802a.png