最近比较闲，复习搭建一下项目，这次主要使用sPRing+SpringMVC+Mybatis。项目持久层使用Mybatis3，控制层使用SpringMVC4.1，使用Spring4.1管理控制器，数据库连接池使用druid数据源，该项数据库暂使用MySQL。
数据表非常的简单（不是重点），如下：
创建maven项目，详细见上一篇maven创建（http://blog.csdn.net/fengshizty/article/details/43019561），创建Maven Project时，将Filter选择为org.apache.maven.archetypes。填写完相关项目坐标信息后项目结构如下：
注：若无src/main/java，src/test/java，src/test/resources时，创建这个几个Source Folder。
这儿将全部使用的Maven依赖贴出了，对应什么作用上面都有解释，如下：
pom.xml
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<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>org.andy.sm</groupId> <artifactId>springmvc_mybatis_demo</artifactId> <packaging>war</packaging> <version>0.0.1-SNAPSHOT</version> <name>springmvc_mybatis_demo Maven Webapp</name> <url>http://maven.apache.org</url> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <spring.version>4.1.4.RELEASE</spring.version> <jackson.version>2.5.0</jackson.version> </properties> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> <scope>test</scope> </dependency> <!-- spring --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</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-web</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-jdbc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>${spring.version}</version> <scope>test</scope> </dependency> <!-- mybatis 包 --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.2.8</version> </dependency> <!--mybatis spring 插件 --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.2.2</version> </dependency> <!-- mysql连接 --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.34</version> </dependency> <!-- 数据源 --> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.0.12</version> </dependency> <dependency> <groupId>org.%20自动生成表的Model，Mapping，Dao文件，先关使用见文章%20http://blog.csdn.net/fengshizty/article/details/43086833
并将其导入到项目的src/main/java包中。
%20其中生成的Model中UserInfo如下：
UserInfo.java（其中List<CourseInfo>%20courseInfos手动添加的）
[java]%20view%20plain%20copy%20package org.andy.shop.model; import java.util.List; public class UserInfo { private Integer id; private String uname; private Integer unumber; private List<CourseInfo> courseInfos; public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public String getUname() { return uname; } public void setUname(String uname) { this.uname = uname == null ? null : uname.trim(); } public Integer getUnumber() { return unumber; } public void setUnumber(Integer unumber) { this.unumber = unumber; } public List<CourseInfo> getCourseInfos() { return courseInfos; } } %20Dao包中的UserInfoMapper.java%20
[java]%20view%20plain%20copy%20package org.andy.shop.dao; import java.util.List; import org.andy.shop.model.UserInfo; public interface UserInfoMapper { int deleteByPrimaryKey(Integer id); int insert(UserInfo record); int insertSelective(UserInfo record); UserInfo selectByPrimaryKey(Integer id); int updateByPrimaryKeySelective(UserInfo record); int updateByPrimaryKey(UserInfo record); List<UserInfo> selectAll(); } mapping%20中的配置文件UserInfoMapper.xml[html]%20view%20plain%20copy%20<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" > <mapper namespace="org.andy.shop.dao.UserInfoMapper"> <resultMap id="BaseResultMap" type="org.andy.shop.model.UserInfo"> <id column="id" property="id" jdbcType="INTEGER" /> <result column="uname" property="uname" jdbcType="VARCHAR" /> <result column="unumber" property="unumber" jdbcType="INTEGER" /> </resultMap> <sql id="Base_Column_List"> id, uname, unumber </sql> <select id="selectByPrimaryKey" resultMap="BaseResultMap" parameterType="java.lang.Integer"> select <include refid="Base_Column_List" /> from user_info where id = #{id,jdbcType=INTEGER} </select> <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer"> delete from user_info where id = #{id,jdbcType=INTEGER} </delete> <insert id="insert" parameterType="org.andy.shop.model.UserInfo"> insert into user_info (id, uname, unumber ) values (#{id,jdbcType=INTEGER}, #{uname,jdbcType=VARCHAR}, #{unumber,jdbcType=INTEGER} ) </insert> <insert id="insertSelective" parameterType="org.andy.shop.model.UserInfo"> insert into user_info <trim prefix="(" suffix=")" suffixOverrides=","> <if test="id != null"> id, </if> <if test="uname != null"> uname, </if> <if test="unumber != null"> unumber, </if> </trim> <trim prefix="values (" suffix=")" suffixOverrides=","> <if test="id != null"> #{id,jdbcType=INTEGER}, </if> <if test="uname != null"> #{uname,jdbcType=VARCHAR}, </if> <if test="unumber != null"> #{unumber,jdbcType=INTEGER}, </if> </trim> </insert> <update id="updateByPrimaryKeySelective" parameterType="org.andy.shop.model.UserInfo"> update user_info <set> <if test="uname != null"> uname = #{uname,jdbcType=VARCHAR}, </if> <if test="unumber != null"> unumber = #{unumber,jdbcType=INTEGER}, </if> </set> where id = #{id,jdbcType=INTEGER} </update> <update id="updateByPrimaryKey" parameterType="org.andy.shop.model.UserInfo"> update user_info set uname = #{uname,jdbcType=VARCHAR}, unumber = #{unumber,jdbcType=INTEGER} where id = #{id,jdbcType=INTEGER} </update> <resultMap type="org.andy.shop.model.UserInfo" id="UserCourseMap" extends="BaseResultMap"> <collection property="courseInfos" javaType="list" ofType="org.andy.shop.model.CourseInfo"> <id property="id" column="course_id" jdbcType="INTEGER" /> <result property="cname" column="cname" jdbcType="VARCHAR" /> <result property="caddress" column="caddress" jdbcType="VARCHAR" /> </collection> </resultMap> <select id="selectAll" resultMap="UserCourseMap"> select u.id, u.uname, u.unumber, c.id course_id, c.cname, c.caddress from user_info u left join course_user_info cu on u.id = cu.uid left join course_info c on cu.cid = c.id </select> </mapper> %20在src/main/resources创建spring的配置文件，这里创建了spring.xml，信息如下：
%20
[html]%20view%20plain%20copy%20<?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-4.1.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd"> <!--引入配置属性文件 --> <context:property-placeholder location="classpath:config.properties" /> <!--自动扫描含有@Service将其%20配置连接池配置信息在config.properties中，如下：
%20
[plain]%20view%20plain%20copy%20#mysql version database druid setting validationQuery=SELECT 1 jdbc.url=jdbc:mysql://localhost:3306/shop?useUnicode=true&characterEncoding=utf-8 jdbc.username=root jdbc.pass%20以下是mybatis的配置信息：spring-mybatis.xml（ps：名字可随便起）
[html]%20view%20plain%20copy%20<?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-4.1.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.1.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.1.xsd "> <!-- 配置数据源 使用的是Druid数据源 --> <bean name="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close"> <property name="url" value="${jdbc.url}" /> <property name="username" value="${jdbc.username}" /> <property name="password" value="${jdbc.password}" /> <!-- 初始化连接大小 --> <property name="initialSize" value="0" /> <!-- 连接池最大使用连接数量 --> <property name="maxActive" value="20" /> <!-- 连接池最小空闲 --> <property name="minIdle" value="0" /> <!-- 获取连接最大等待时间 --> <property name="maxWait" value="60000" /> <property name="poolPreparedStatements" value="true" /> <property name="maxPoolPreparedStatementPerConnectionSize" value="33" /> <!-- 用来检测有效sql --> <property name="validationQuery" value="${validationQuery}" /> <property name="testOnBorrow" value="false" /> <property name="testOnReturn" value="false" /> <property name="testWhileIdle" value="true" /> <!-- 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 --> <property name="timeBetweenEvictionRunsMillis" value="60000" /> <!-- 配置一个连接在池中最小生存的时间，单位是毫秒 --> <property name="minEvictableIdleTimeMillis" value="25200000" /> <!-- 打开removeAbandoned功能 --> <property name="removeAbandoned" value="true" /> <!-- 1800秒，也就是30分钟 --> <property name="removeAbandonedTimeout" value="1800" /> <!-- 关闭abanded连接时输出错误日志 --> <property name="logAbandoned" value="true" /> <!-- 监控数据库 --> <property name="filters" value="mergeStat" /> </bean> <!-- myBatis文件 --> <bean id="sql%20 %20在src/main/resources中添加log4j日志配置信息：
%20log4j.properties
[plain]%20view%20plain%20copy%20### set log levels ### log4j.rootLogger = INFO , C , D , E ### console ### log4j.appender.C = org.apache.log4j.ConsoleAppender log4j.appender.C.Target = System.out log4j.appender.C.layout = org.apache.log4j.PatternLayout log4j.appender.C.layout.ConversionPattern = [springmvc_mybatis_demo][%p] [%-d{yyyy-MM-dd HH:mm:ss}] %C.%M(%L) | %m%n ### log file ### log4j.appender.D = org.apache.log4j.DailyRollingFileAppender log4j.appender.D.File = ../logs/springmvc-mybatis-demo.log log4j.appender.D.Append = true log4j.appender.D.Threshold = INFO log4j.appender.D.layout = org.apache.log4j.PatternLayout log4j.appender.D.layout.ConversionPattern = [springmvc_mybatis_demo][%p] [%-d{yyyy-MM-dd HH:mm:ss}] %C.%M(%L) | %m%n ### exception ### log4j.appender.E = org.apache.log4j.DailyRollingFileAppender log4j.appender.E.File = ../logs/springmvc-mybatis-demo_error.log log4j.appender.E.Append = true log4j.appender.E.Threshold = ERROR log4j.appender.E.layout = org.apache.log4j.PatternLayout log4j.appender.E.layout.ConversionPattern = [sspringmvc_mybatis_demo][%p] [%-d{yyyy-MM-dd HH:mm:ss}] %C.%M(%L) | %m%n %20在src/main/java中创建相关的org.andy.shop.service包和org.andy.shop.service.Impl包。
%20UserService接口：
%20
[java]%20view%20plain%20copy%20package org.andy.shop.service; import java.util.List; import org.andy.shop.model.UserInfo; /** * 创建时间：2015-1-27 下午5:15:03 * @author andy * @version 2.2 */ public interface UserService { UserInfo getUserById(int id); List<UserInfo> getUsers(); int insert(UserInfo userInfo); } %20UserServiceImpl实现Service：[java]%20view%20plain%20copy%20package org.andy.shop.service.impl; import java.util.List; import org.andy.shop.dao.UserInfoMapper; import org.andy.shop.model.UserInfo; import org.andy.shop.service.UserService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; /** * 创建时间：2015-1-27 下午5:22:59 * * @author andy * @version 2.2 */ @Service("userService") public class UserServiceImpl implements UserService { @Autowired private UserInfoMapper userInfoMapper; @Override public UserInfo getUserById(int id) { return userInfoMapper.selectByPrimaryKey(id); } @Override public List<UserInfo> getUsers() { return userInfoMapper.selectAll(); } @Override public int insert(UserInfo userInfo) { int result = userInfoMapper.insert(userInfo); System.out.println(result); return result; } } %20在src/test/java中写测试类，检测是否能够读出数据，若能读出则证明Spring+Mybatis整合成功。
TestUserService测试类：
[java]%20view%20plain%20copy%20package org.andy.shop.service; import java.util.List; import org.andy.shop.model.UserInfo; import org.apache.log4j.Logger; import org.junit.Test; import org.junit.runner.RunWith; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.test.context.ContextConfiguration; import org.springframework.test.context.junit4.SpringJUnit4ClassRunner; import com.alibaba.fastjson.JSON; /** * 创建时间：2015-1-27 下午10:45:38 * * @author andy * @version 2.2 */ @RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration(locations = { "classpath:spring.xml", "classpath:spring-mybatis.xml" }) public class TestUserService { private static final Logger LOGGER = Logger .getLogger(TestUserService.class); @Autowired private UserService userService; @Test public void testQueryById1() { UserInfo userInfo = userService.getUserById(1); LOGGER.info(JSON.toJSON(userInfo)); } @Test public void testQueryAll() { List<UserInfo> userInfos = userService.getUsers(); LOGGER.info(JSON.toJSON(userInfos)); } @Test public void testInsert() { UserInfo userInfo = new UserInfo(); userInfo.setUname("xiaoming"); userInfo.setUnumber(4); int result = userService.insert(userInfo); System.out.println(result); } } 若是测试成功，那证明已经成功了一半了。%20SpringMVC的配置信息主要包括控制层Controller的bean管理，视图层和控制层配置等等，下面是spring-mvc.xml信息：
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<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:mvc="http://www.springframework.org/schema/mvc" 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" 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"> <!-- 自动扫描controller包下的所有类，如果@Controller注入为bean --> <context:component-scan base-package="org.andy.shop.controller" /> <!-- 避免IE执行%20web容器配置启动加载的配置文件，设置SpringMVC拦截的请求（此处拦截.htmls结尾的url请求）
[html]%20view%20plain%20copy%20<?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" 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_2_5.xsd" id="WebApp_ID" version="2.5"> <display-name>springmvc_mybatis_demo</display-name> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring.xml,classpath:spring-mybatis.xml</param-value> </context-param> <filter> <filter-name>encodingFilter</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> <init-param> <param-name>forceEncoding</param-name> <param-value>true</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> <!-- 防止spring内存溢出监听器 --> <listener> <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class> </listener> <servlet> <description>spring mvc servlet</description> <servlet-name>rest</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> </servlet> <servlet-mapping> <servlet-name>rest</servlet-name> <url-pattern>*.htmls</url-pattern> </servlet-mapping> <!-- 配置session超时时间，单位分钟 --> <session-config> <session-timeout>30</session-timeout> </session-config> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> </web-app> %20在org.andy.shop.controller创建控制层，如UserController.java
%20
[java]%20view%20plain%20copy%20package org.andy.shop.controller; import java.util.List; import org.andy.shop.model.UserInfo; import org.andy.shop.service.UserService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.ui.ModelMap; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; /** * 创建时间：2015-1-28 下午1:17:27 * @author andy * @version 2.2 */ @Controller @RequestMapping("/user") public class UserController { @Autowired private UserService userService; @RequestMapping("/showInfo/{userId}") public String showUserInfo(ModelMap modelMap, @PathVariable int userId){ UserInfo userInfo = userService.getUserById(userId); modelMap.addAttribute("userInfo", userInfo); return "/user/showInfo"; } @RequestMapping("/showInfos") public @ResponseBody Object showUserInfos(){ List<UserInfo> userInfos = userService.getUsers(); return userInfos; } } %20在WEB-INF创建视图总目录views(为了安全起见一般都在WEB-INF下创建)，创建/user/showInfo.jsp视图文件。
%20
[html]%20view%20plain%20copy%20<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>userInfo</title> </head> <body> 姓名： ${userInfo.uname} </body> </html> %20到此为demo以及基本创建完成总目录如下：
%20
将项目编译，Maven build...输入clean compile package，部署到Tomcat服务器，启动项目。
测试1：测试第一个url， http://localhost:8080/springmvc_mybatis_demo/user/showInfo/1.htmls
测试2：测试第二个json数据返回的url， http://localhost:8080/springmvc_mybatis_demo/user/showInfos.htmls
ok，数据正常显示，SpringMVC+Mybatis搭建成功。
博客来源：http://blog.csdn.net/fengshizty
源码地址：http://download.csdn.net/detail/fengshizty/8406797
在测试时，我们并不需要要启动web容器，junit测试时，需要以下几点注意事项：
1、测试时，将pom.xml文件中的依赖包的范围去掉
junit，spring-test，servlet-api的scope范围去掉。
2、在测试编译时，可能会把mybatis的映射配置文件.xml过滤掉，所以需要在pom.xml中添加如下配置：
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<resources> <resource> <directory>src/main/resources</directory> <includes> <include>**/*.properties</include> <include>**/*.xml</include> </includes> <filtering>true</filtering> </resource> <resource> <directory>src/main/java</directory> <includes> <include>**/*.xml</include> </includes> <filtering>true</filtering> </resource> </resources> %20上述文件添加在<build></build>节点中。
%20 3、项目导入注意事项
%20 %20 下载完之后，只保留pom.xml%20和%20src两个文件，其他的删除。
右击“Import..” 选择maven项目导入（所以首先要将maven插件装好，maven配好），如下：
导入以后项目会出现叉号，项目是在jdk1.7基础上运行的，需要配置一下项目的环境（jdk装1.7及以上），右击该项目选择“Properties”弹出如下框：
上述三场需要修改：
1、JavaBuild Path 选“Libraries”，将JRE System Library改为安装的javase-1.7
2、Java Compile 中的JDK Compliance 中Compiler Compliance level 改为 1.7
3、Project Facets 中 将Dynamic Web Module 改为2.5及以上
Java中的版本改为 1.7
文章转自：http://blog.csdn.net/fengshizty/article/details/43086961?locationNum=10&fps=1
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