Mybatis 系列（2）——SSM（spring mvc+spring+Mybatis）框架整合

待我称王封你为后i 2022-08-22 13:28 250阅读 0赞

最近用Idea开发，idea是一款综合的相对较新的Java IDE。Idea支持很多整合功能，我觉得挺好用的。Idea可以校正xml，支持jsp的调试。最让我喜欢的是，写spring配置文件的时候，写的一些路径都可以自己找到。classpath自己有代码的提示，超级的智能。

## 环境配置 ##

在整合框架之前，先配置一下JER运行环境，配置maven仓库。  
1.File——ProjectStructure——Project——New… 选择jdk的安装环境  
![选择sdk的安装路径][sdk]

2.File——Settings——Maven——Maven home directory选择自己maven的安装目录。下面是maven管理jar包的地方。  
![这里写图片描述][20160529210401390]

## 概念 ##

## 1.spring ##

Spring目的：就是让对象与对象（模块与模块）之间的关系没有通过代码来关联，都是通过配置类说明管理的，简单的说，不用在代码里写死new某个对象，而是全部在配置文件中进行了配置。Spring是一个容器，凡是在容器里的对象才会有Spring所提供的这些服务和功能。

## 2.Spring MVC ##

Spring MVC属于SpringFrameWork的后续产品，已经融合在Spring Web Flow里面。Spring MVC 分离了控制器、模型对象、分派器以及处理程序对象的角色，这种分离让它们更容易进行定制。

## 3.Mybatis ##

MyBatis 是支持普通 SQL查询，存储过程和高级映射的优秀持久层框架。MyBatis 消除了几乎所有的JDBC代码和参数的手工设置以及结果集的检索。MyBatis 使用简单的 XML或注解用于配置和原始映射，将接口和 Java 的POJOs（Plain Old Java Objects，普通的 Java对象）映射成数据库中的记录。

## spring Mybatis整合 ##

用的框架的版本分别是：  
spring版本号 4.0.2.RELEASE  
mybatis版本号 3.2.6  
Spring MVC版本号 4.0.2 RELEASE  
log4j日志文件管理包版本号 \{slf4j |1.7.7\} \{ log4j |1.2.17\}

项目目录如下：  
![这里写图片描述][20160529212810265]

1.编写pom.xml，引入jar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>com.tgb</groupId>
      <artifactId>Order</artifactId>
      <packaging>war</packaging>
      <version>1.0-SNAPSHOT</version>
      <name>Order Maven Webapp</name>
      <url>http://maven.apache.org</url>
    
      <properties>
        
        <spring.version>4.0.2.RELEASE</spring.version>
        
        <mybatis.version>3.2.6</mybatis.version>
        
        <slf4j.version>1.7.7</slf4j.version>
        <log4j.version>1.2.17</log4j.version>
        <project.build.sourceEncoding>
          UTF-8
        </project.build.sourceEncoding>
      </properties>
    
      <dependencies>
        <dependency>
          <groupId>junit</groupId>
          <artifactId>junit</artifactId>
          <version>4.11</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.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>javax</groupId>
          <artifactId>javaee-api</artifactId>
          <version>7.0</version>
        </dependency>
        
        <dependency>
          <groupId>mysql</groupId>
          <artifactId>mysql-connector-java</artifactId>
          <version>5.1.30</version>
        </dependency>
        
        <dependency>
          <groupId>commons-dbcp</groupId>
          <artifactId>commons-dbcp</artifactId>
          <version>1.2.2</version>
        </dependency>
        
        <dependency>
          <groupId>jstl</groupId>
          <artifactId>jstl</artifactId>
          <version>1.2</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>org.codehaus.jackson</groupId>
          <artifactId>jackson-mapper-asl</artifactId>
          <version>1.9.13</version>
        </dependency>
        
        <dependency>
          <groupId>commons-fileupload</groupId>
          <artifactId>commons-fileupload</artifactId>
          <version>1.3.1</version>
        </dependency>
        <dependency>
          <groupId>commons-io</groupId>
          <artifactId>commons-io</artifactId>
          <version>2.4</version>
        </dependency>
        <dependency>
          <groupId>commons-codec</groupId>
          <artifactId>commons-codec</artifactId>
          <version>1.9</version>
        </dependency>
      </dependencies>
      <build>
        <finalName>Order</finalName>
      </build>
    </project>

2.建立jdbc.properties，配置数据库信息

driver=com.mysql.jdbc.Driver
    url=jdbc:mysql:///ordersystem
    username=root
    password=123456
    #定义初始连接数
    initialSize=0
    #定义最大连接数
    maxActive=20
    #定义最大空闲
    maxIdle=20
    #定义最小空闲
    minIdle=1
    #定义最长等待时间
    maxWait=60000

3.log4j.properties配置文件

#定义LOG输出级别
    log4j.rootLogger=INFO,Console,File
    #定义日志输出目的地为控制台
    log4j.appender.Console=org.apache.log4j.ConsoleAppender
    log4j.appender.Console.Target=System.out
    #可以灵活地指定日志输出格式，下面一行是指定具体的格式
    log4j.appender.Console.layout = org.apache.log4j.PatternLayout
    log4j.appender.Console.layout.ConversionPattern=[%c] - %m%n
    
    #文件大小到达指定尺寸的时候产生一个新的文件
    log4j.appender.File = org.apache.log4j.RollingFileAppender
    #指定输出目录
    log4j.appender.File.File = logs/ssm.log
    #定义文件最大大小
    log4j.appender.File.MaxFileSize = 10MB
    # 输出所以日志，如果换成DEBUG表示输出DEBUG以上级别日志
    log4j.appender.File.Threshold = ALL
    log4j.appender.File.layout = org.apache.log4j.PatternLayout
    log4j.appender.File.layout.ConversionPattern =[%p] [%d{yyyy-MM-dd HH\:mm\:ss}][%c]%m%n

4.建立spring-Mybatis.xml配置文件

<?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:p="http://www.springframework.org/schema/p" 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-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/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
        
        <context:component-scan base-package="com.cn.order" />
        
        <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
            <property name="location" value="classpath:jdbc.properties" />
        </bean>
    
        <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
            <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>
            
            <property name="maxActive" value="${maxActive}"></property>
            
            <property name="maxIdle" value="${maxIdle}"></property>
            
            <property name="minIdle" value="${minIdle}"></property>
            
            <property name="maxWait" value="${maxWait}"></property>
        </bean>
    
        
        <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
            <property name="dataSource" ref="dataSource" />
            
            <property name="mapperLocations" value="classpath:com/cn/order/mapping/*.xml"></property>
        </bean>
    
        
        <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
            <property name="basePackage" value="com.cn.order.dao" />
            <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
        </bean>
    
        
        <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
            <property name="dataSource" ref="dataSource" />
        </bean>
    
    </beans>

5.服务层接口 service

package com.cn.order.service;
    
    import com.cn.order.pojo.User;
    /** * Created by azz-pc on 2016/5/24. */
    public interface IUserService { 
        User getUserById(int userId);
    }

6.服务层实现serviceImpl

package com.cn.order.service.impl;
    
    import javax.annotation.Resource;
    
    import org.springframework.stereotype.Service;
    
    import com.cn.order.dao.IUserDao;
    import com.cn.order.pojo.User;
    import com.cn.order.service.IUserService;
    
    /** * Created by azz-pc on 2016/5/24. */
    @Service("userService")
    public class UserServiceImpl implements IUserService { 
        @Resource 
        private IUserDao userDao;
    
        public User getUserById(int userId) {
    
            return this.userDao.selectByPrimaryKey(userId);
        }
    
    }

7.Junit测试  
测试类编写：

package org.zsl.testmybatis;
    
    import javax.annotation.Resource;
    
    import com.cn.order.pojo.*;
    import com.cn.order.service.*;
    import org.apache.log4j.Logger;
    /*import org.apache.log4j.net.SyslogAppender;*/
    import org.junit.Test;
    import org.junit.runner.RunWith;
    import org.springframework.context.ApplicationContext;
    import org.springframework.test.context.ContextConfiguration;
    import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
    
    
    
    @RunWith(SpringJUnit4ClassRunner.class)     //表示继承了SpringJUnit4ClassRunner类
    @ContextConfiguration(locations = {
       "classpath:spring-mybatis.xml"})
    public class TestMyBatis {
        private static Logger logger = Logger.getLogger(TestMyBatis.class);
        private ApplicationContext ac = null;
        @Resource
        //private IUserService userService = null;
        private ICardService cardService=null;
    
        private Card card=new Card();
    //  @Before
    //  public void before() {
    //      ac = new ClassPathXmlApplicationContext("applicationContext.xml");
    //      userService = (IUserService) ac.getBean("userService");
    //  }
    
        @Test
        public void test1() {
    //        User user = userService.getUserById(1);
    //        System.out.println(user.getUsername());
    //        System.out.println(user.getPassword());
    //        System.out.println(user.getState());
    //        logger.info("值："+user.getUsername());
    //        logger.info(JSON.toJSONString(user));
    
            card.setCardid("E000010");
            card.setPassword("33333");
            card.setOwnername("xiaozhou");
            card.setCash("10.0");
            card.setCardtypeid(1);
            card.setStatus("T");
            cardService.insert(card);
            System.out.println("insert success");
    
        }
    }

利用MyBatis Generator自动创建mapping，dao，pojo层，详情参见博客：[http://blog.csdn.net/zhou2s\_101216/article/details/51175818][http_blog.csdn.net_zhou2s_101216_article_details_51175818]

![这里写图片描述][20160529214239473]

输出insert success 证明 测试成功。

## 整合springMVC ##

1.配置spring-mvc.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/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/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">
    
        
        <context:component-scan base-package="com.cn.order.controller"/>
    
        
    
        
        <bean id="mappingJacksonHttpMessageConverter" class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">
            <property name="supportedMediaTypes">
                <list>
                    <value>text/html;charset=UTF-8</value>
                </list>
            </property>
        </bean>
        
        <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
            <property name="messageConverters">
                <list>
                    <ref bean="mappingJacksonHttpMessageConverter"/>    
                </list>
            </property>
        </bean>
        
        <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
            
            <property name="prefix" value="/WEB-INF/jsp/"/>
            <property name="suffix" value=".jsp"/>
        </bean>
    
        <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
            
            <property name="defaultEncoding" value="utf-8"/>
            
            <property name="maxUploadSize" value="10485760000"/>
            
            <property name="maxInMemorySize" value="40960"/>
        </bean>
    
        <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
            <property name="location" value="classpath:jdbc.properties"/>
        </bean>
    
    </beans>

2.配置web.xml

<?xml version="1.0" encoding="UTF-8"?>
    <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" version="3.0">
      <display-name>Archetype Created Web Application</display-name>
      
      <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring-mybatis.xml</param-value>
      </context-param>
      
      <filter>
        <filter-name>encodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <async-supported>true</async-supported>
        <init-param>
          <param-name>encoding</param-name>
          <param-value>UTF-8</param-value>
        </init-param>
      </filter>
      <filter-mapping>
        <filter-name>encodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
      </filter-mapping>
      
      <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
      </listener>
      
      <listener>
        <listener-class>org.springframework.web.util.IntrospectorCleanupListener</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:spring-mvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
        <async-supported>true</async-supported>
      </servlet>
    
      <servlet-mapping>
        <servlet-name>SpringMVC</servlet-name>
        
        <url-pattern>/</url-pattern>
      </servlet-mapping>
      <servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.css</url-pattern>
      </servlet-mapping>
    
      <servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.js</url-pattern>
      </servlet-mapping>
    
      <welcome-file-list>
        <welcome-file>/index.jsp</welcome-file>
      </welcome-file-list>
      
      <session-config>
        <session-timeout>15</session-timeout>
      </session-config>
    
    </web-app>

3.前台使用的是，spring mvc、bootstrap、angularjs  
showUser.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8" %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta name="viewport" content="width=decive-width,initial-scale=1.0"> <title>测试</title>  <script type="text/javascript" src="../lib/js/jquery/jquery.js"></script> <script type="text/javascript" src="../lib/js/bootstrap/bootstrap.min.js"></script>  <link rel="stylesheet" href="../lib/css/bootstrap.min.css">  <script type="text/javascript" src="../lib/js/angular/angular.js"></script> </head> <body> <div class="panel panel-primary"> <div class="panel-heading"> <div class="panel-title">测试test</div> </div> <div class="panel-body"> <div class="row"> <div class="col-md-12">${user.username}，springmvc OKOK</div> <div ng-app="" ng-init="old='22'"> <p>Input how old are you：<input type="text" ng-model="old"></p> <p>You wrote: you are { { old}} years old</p> </div> </div> </div> <div class="panel-footer">footer:made by zhouzhou</div> </div> </body> </html>

运行后结果：  
![这里写图片描述][20160529214816121]

到这里，我5天左右搭出来的框架就在这里了~~

中间遇到了springMVC静态文件被拦截的问题，显示nomaping，正常的view访问都显示了404错误。如何你的DispatcherServlet拦截 \* .do这样的URL，就不存在访问不到静态资源的问题。如果你的DispatcherServlet拦截“/”，拦截了所有的请求，同时对 *.js,*.jpg的访问也就被拦截了。为了可以正常访问静态文件，不要找不到静态文件报404。需要在web.xml中配置：

<servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.css</url-pattern>
      </servlet-mapping>
    
      <servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.js</url-pattern>
      </servlet-mapping>

## 总结 ##

经过了几天的痛苦，最起码搭过了7，8遍才搭出来了。我开始都不知道要发布war包，后来才知道要在tomcat中发布war包，才可以运行出来界面。整个过程虽然有过想放弃但是，还是坚持到了最后。学到很多东西，乐在其中。

[sdk]: /images/20220722/60fae08372444431863d414289e58736.png
[20160529210401390]: /images/20220722/07720d282d454a698c6ace0099f46711.png
[20160529212810265]: /images/20220722/ee749e9f715844e48acc5669f9822b78.png
[http_blog.csdn.net_zhou2s_101216_article_details_51175818]: http://blog.csdn.net/zhou2s_101216/article/details/51175818
[20160529214239473]: /images/20220722/f162cf021d9347339d8c066c6b50db8f.png
[20160529214816121]: /images/20220722/354ecba1956341bd9521f8df26bcd266.png