SpringMVC和MyBatis整合

时间：2016-12-15 17:53:51 阅读：244 评论：0 收藏：0 [点我收藏+]

标签：额外 bind instance table 简单后缀 ges eve sch

目前主流的Web MVC框架，除了Struts这个主力外，还有Spring MVC，主要是由于Spring MVC配置比较简单，使用起来也十分明了，非常灵活，与Spring 集成较好，对RESTful API的支持也比struts要好。
MyBatis是ibatis的升级版，作为hibernate的老对手，它是一个可以自定义SQL、存储过程和高级映射的持久层框架。
与hibernate的主要区别就是mybatis是半自动化的，而hibernate是全自动的，所以当应用需求越来越复杂的时候，自动化的sql显得比较笨拙。
由于前段时间接了个项目要用springmvc做，所以我抱着练手的态度，又玩起了整合框架的游戏。经常搭框架的人应该都清楚，框架搭建的核心就是配置文件。所以我主要贴下几个配置文件的代码。还是那句话，我都是写好配置文件之后，运行报错再加jar。这里列一下我用的jar包（应该是最少的）：

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备注：上图有一些额外的jar，比如我用的数据库连接池是阿里巴巴的druid、日志框架式logback，所以引入了相关jar。关于这两个框架的使用和配置都是非常简单的，所以这里就不细说。
1.整合SpringMVC
springMybatis-servlet.xml：

 1     <?xml version="1.0" encoding="UTF-8"?>    
 2     <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"   
 3            xmlns:context="http://www.springframework.org/schema/context"  
 4            xmlns:mvc="http://www.springframework.org/schema/mvc"  
 5            xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd  
 6             http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd  
 7             http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">  
 8           
 9             <!-- 启用spring mvc 注解-->  
10         <mvc:annotation-driven>   
11         </mvc:annotation-driven>  
12           
13         <!-- 自动扫描的包名 ，使Spring支持自动检测组件，如注解的Controller-->  
14         <context:component-scan base-package="com.alibaba.controller" />  
15         <context:component-scan base-package="com.alibaba.service"/>  
16           
17           
18         <!-- 视图解析器:定义跳转的文件的前后缀 -->    
19         <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">    
20             <property name="prefix" value="/WEB-INF/jsp/" />    
21             <property name="suffix" value=".jsp" />  <!--可为空,方便实现自已的依据扩展名来选择视图解释类的逻辑  -->  
22         </bean>    
23       
24         <!--配置拦截器, 多个拦截器,顺序执行 -->   
25         <mvc:interceptors>    
26             <mvc:interceptor>    
27                 <!-- 匹配的是url路径  -->  
28                 <mvc:mapping path="/" />  
29                 <mvc:mapping path="/user/**" />  
30                 <mvc:mapping path="/test/**" />  
31                   
32                 <bean class="com.alibaba.interceptor.CommonInterceptor"></bean>    
33             </mvc:interceptor>  
34             <!-- 当设置多个拦截器时，先按顺序调用preHandle方法，然后逆序调用每个拦截器的postHandle和afterCompletion方法 -->  
35         </mvc:interceptors>  
36             
37     </beans>

2.整合Mybatis

spring-dao.xml:

 1 <?xml version="1.0" encoding="UTF-8"?>    
 2 <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"   
 3        xmlns:mybatis="http://mybatis.org/schema/mybatis-spring"  
 4        xmlns:context="http://www.springframework.org/schema/context"  
 5        xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd  
 6        http://mybatis.org/schema/mybatis-spring http://mybatis.org/schema/mybatis-spring.xsd  
 7        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">  
 8       
 9     <!-- 该包下的类支持注解，表示会被当作{@code mybatis mapper}处理 配置了之后表示可以自动引入mapper类-->  
10     <mybatis:scan base-package="com.alibaba.dao"/>  
11     <!--引入属性文件 -->  
12     <context:property-placeholder location="classpath:configuration.properties"/>  
13       
14     <!--数据库连接-->  
15     <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">   
16         <property name="url" value="${jdbc.url}" />  
17         <property name="username" value="${jdbc.username}"/>  
18         <property name="password" value="${jdbc.password}"/>  
19         <!-- 配置初始化大小、最小、最大 -->  
20         <property name="initialSize"><value>1</value></property>  
21         <property name="maxActive"><value>5</value></property>  
22         <property name="minIdle"><value>1</value></property>  
23         <!-- 配置获取连接等待超时的时间 -->  
24         <property name="maxWait"><value>60000</value></property>  
25         <!-- 配置监控统计拦截的filters -->  
26         <property name="filters"><value>stat</value></property>  
27         <!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 -->  
28         <property name="timeBetweenEvictionRunsMillis"><value>60000</value></property>  
29         <!-- 配置一个连接在池中最小生存的时间，单位是毫秒 -->  
30         <property name="minEvictableIdleTimeMillis"><value>300000</value></property>  
31         <!--  
32         <property name="validationQuery"><value>SELECT ‘x‘</value></property>  
33         <property name="testWhileIdle"><value>true</value></property>  
34         <property name="testOnBorrow"><value>false</value></property>  
35         <property name="testOnReturn"><value>false</value></property>  
36         <property name="poolPreparedStatements"><value>true</value></property>  
37         <property name="maxOpenPreparedStatements"><value>20</value></property>  
38          -->  
39     </bean>  
40       
41     <!-- mybatis配置 -->  
42     <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">  
43         <property name="dataSource" ref="dataSource" />  
44     </bean>   
45 </beans>

3.web.xml整合SpringMVC和Mybatis

 1     <?xml version="1.0" encoding="UTF-8"?>  
 2     <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0">  
 3         <!--　该servlet为tomcat,jetty等容器提供,将静态资源映射从/改为/static/目录，如原来访问　http://localhost/foo.css　,现在http://localhost/static/foo.css　-->  
 4         <!-- 不拦截静态文件 -->  
 5         <servlet-mapping>  
 6             <servlet-name>default</servlet-name>  
 7             <url-pattern>/js/*</url-pattern>  
 8             <url-pattern>/css/*</url-pattern>  
 9             <url-pattern>/images/*</url-pattern>  
10             <url-pattern>/fonts/*</url-pattern>  
11         </servlet-mapping>  
12           
13         <!-- 配置字符集 -->  
14         <filter>  
15             <filter-name>encodingFilter</filter-name>  
16             <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>  
17             <init-param>  
18                 <param-name>encoding</param-name>  
19                 <param-value>UTF-8</param-value>  
20             </init-param>  
21             <init-param>  
22                 <param-name>forceEncoding</param-name>  
23                 <param-value>true</param-value>  
24             </init-param>  
25         </filter>  
26         <filter-mapping>  
27             <filter-name>encodingFilter</filter-name>  
28             <url-pattern>/*</url-pattern>  
29         </filter-mapping>  
30           
31         <!-- 初始化 DispatcherServlet时，该框架在 web应用程序WEB-INF目录中寻找一个名为[servlet-名称]-servlet.xml的文件，  
32                 并在那里定义相关的Beans，重写在全局中定义的任何Beans -->  
33         <servlet>  
34             <servlet-name>springMybatis</servlet-name>  
35             <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>  
36             <load-on-startup>1</load-on-startup>  
37         </servlet>  
38         <servlet-mapping>  
39             <servlet-name>springMybatis</servlet-name>  
40             <!-- 所有的的请求，都会被DispatcherServlet处理 -->  
41             <url-pattern>/</url-pattern>  
42         </servlet-mapping>  
43            
44         <context-param>  
45             <param-name>contextConfigLocation</param-name>  
46             <param-value>/WEB-INF/config/spring-*.xml</param-value>  
47         </context-param>  
48         <listener>  
49             <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>  
50         </listener>  
51         <!-- druid web 监控 -->  
52         <servlet>  
53             <servlet-name>DruidStatView</servlet-name>  
54             <servlet-class>com.alibaba.druid.support.http.StatViewServlet</servlet-class>  
55         </servlet>  
56         <servlet-mapping>  
57             <servlet-name>DruidStatView</servlet-name>  
58             <url-pattern>/druid/*</url-pattern>  
59         </servlet-mapping>  
60           
61         <error-page>  
62             <error-code>404</error-code>  
63             <location>/error/404.jsp</location>  
64         </error-page>  
65         <error-page>  
66             <error-code>500</error-code>  
67             <location>/error/500.jsp</location>  
68         </error-page>  
69     </web-app>

4.logback.xml日志配置

 1 <?xml version="1.0" encoding="UTF-8"?>  
 2 <configuration>  
 3   <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">  
 4     <encoder>    
 5         <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>  
 6     </encoder>  
 7   </appender>  
 8   <logger name="test.LogbackTest" level="TRACE"/>   
 9   <logger name="com.alibaba.controller.TestController" level="TRACE"/>  
10   <logger name="org.springframework.web.servlet.DispatcherServlet" level="DEBUG" />  
11   <logger name="druid.sql" level="INFO" /><!-- 如果spring-config里面没有配置slf4j,就不会显示sql日志，logback只是slf4j的一个实现 -->  
12   <root level="debug">  
13     <appender-ref ref="STDOUT" />  
14   </root>  
15 </configuration>

5.configuration.properties配置

1 jdbc.url=jdbc\:mysql\://localhost\:3306/druid?useUnicode\=true&characterEncoding\=UTF-8&zeroDateTimeBehavior\=convertToNull  
2 jdbc.username=root  
3 jdbc.password=123456

6.测试搭建是否成功，后台代码

首先是登录，用了加密，可以去掉

 1     package com.alibaba.controller;  
 2       
 3       
 4     import javax.annotation.Resource;  
 5     import javax.servlet.http.HttpServletRequest;  
 6       
 7     import org.apache.commons.codec.digest.DigestUtils;  
 8     import org.slf4j.Logger;  
 9     import org.slf4j.LoggerFactory;  
10     import org.springframework.stereotype.Controller;  
11     import org.springframework.web.bind.annotation.RequestMapping;  
12     import org.springframework.web.bind.annotation.RequestMethod;  
13     import org.springframework.web.bind.annotation.RequestParam;  
14       
15     import com.alibaba.model.User;  
16     import com.alibaba.service.UserService;  
17     import com.alibaba.util.RequestUtil;  
18       
19     /** 
20      * @author tfj 
21      * 2014-7-26 
22      */  
23     @Controller  
24     public class SystemController {  
25         private final Logger log = LoggerFactory.getLogger(SystemController.class);  
26         @Resource  
27         private UserService userService;  
28           
29         @RequestMapping(value = "/",method = RequestMethod.GET)  
30         public String home() {  
31             log.info("返回首页！");  
32             return "index";  
33         }  
34           
35         @RequestMapping(value = "/test/hello",method = RequestMethod.GET)  
36         public String testHello() {  
37             log.info("执行了testHello方法！");  
38             return "testHello";  
39         }  
40           
41         @RequestMapping(value = "/login",method = RequestMethod.POST)  
42         public String testLogin(HttpServletRequest request,@RequestParam String username, @RequestParam String password) {  
43             log.info("执行了testLogin方法！");  
44             User user = userService.findUserByName(username);  
45             if(user!=null){  
46                 if(user.getPassword().equals(DigestUtils.md5Hex(password))){  
47                     request.getSession().setAttribute("userId", user.getId());    
48                     request.getSession().setAttribute("user", username);    
49                     return "redirect:" + RequestUtil.retrieveSavedRequest();//跳转至访问页面  
50                 }else{  
51                     log.info("密码错误");    
52                     request.getSession().setAttribute("message", "用户名密码错误，请重新登录");  
53                     return "login";   
54                 }  
55             }else{  
56                 log.info("用户名不存在");    
57                 request.getSession().setAttribute("message", "用户名不存在，请重新登录");  
58                 return "login";   
59             }  
60         }  
61     }

关于service和model就不写了，写一下mybatis的mapper类映射

1 <?xml version="1.0" encoding="UTF-8" ?>  
2 <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">  
3 <mapper namespace="com.alibaba.dao.UserMapper">      
4 <select id="findUserByName" resultType="com.alibaba.model.User">  
5       select id, username , password from sysuser where username = #{username}   
6 </select>  
7 </mapper>

7.前台jsp主要是登录和登录成功的页面，就不写了

贴一下截图：

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