Spring+SpringMVC+Mybatis整合

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。

1、 数据库表结构以及maven项目结构

         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。

 2、修改pom.xml添加对应的包依赖

     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

<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.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.8.4</version>
        </dependency>

        <!-- log4j -->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>

        <!-- servlet -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>3.0-alpha-1</version>
        </dependency>

        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>

        <!-- json -->
        <dependency>
            <groupId>org.codehaus.jackson</groupId>
            <artifactId>jackson-mapper-asl</artifactId>
            <version>1.9.13</version>
        </dependency>

        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.3</version>
        </dependency>

        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-annotations</artifactId>
            <version>${jackson.version}</version>
        </dependency>

        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>${jackson.version}</version>
        </dependency>

        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>${jackson.version}</version>
        </dependency>
        <!-- 文件上传 -->
        <dependency>
            <groupId>commons-io</groupId>
            <artifactId>commons-io</artifactId>
            <version>2.4</version>
        </dependency>

        <dependency>
            <groupId>commons-fileupload</groupId>
            <artifactId>commons-fileupload</artifactId>
            <version>1.2.2</version>
        </dependency>


    </dependencies>


    <build>
        <finalName>springmvc_mybatis_demo</finalName>
        <plugins>
            <!-- Run the JUnit unit tests in an isolated classloader -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-plugin</artifactId>
                <version>2.4.2</version>
                <configuration>
                    <skipTests>true</skipTests>
                </configuration>
            </plugin>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-war-plugin</artifactId>
                <version>2.3</version>
                <configuration>
                    <webXml>src/main/webapp/WEB-INF/web.xml</webXml>
                </configuration>
            </plugin>

            <!-- generate java doc -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-javadoc-plugin</artifactId>
                <version>2.9.1</version>
                <configuration>
                    <javadocDirectory>target/javadoc</javadocDirectory>
                    <reportOutputDirectory>target/javadoc</reportOutputDirectory>
                    <charset>UTF-8</charset>
                    <encoding>UTF-8</encoding>
                    <docencoding>UTF-8</docencoding>
                    <show>private</show>
                </configuration>
            </plugin>

            <!-- 部署至本机 -->
            <plugin>
                <groupId>org.codehaus.cargo</groupId>
                <artifactId>cargo-maven2-plugin</artifactId>
                <version>1.0</version>
                <configuration>
                    <container>
                        <containerId>tomcat6x</containerId>
                        <home>D:WebServerapache-tomcat-6.0.39</home>
                    </container>
                    <configuration>
                        <type>existing</type>
                        <home>D:WebServerapache-tomcat-6.0.39</home>
                    </configuration>
                </configuration>
            </plugin>

        </plugins>

    </build>
</project>

3、使用Generator自动生成Mybatis相关表信息

      自动生成表的Model，Mapping，Dao文件，先关使用见文章 http://blog.csdn.net/fengshizty/article/details/43086833 

并将其导入到项目的src/main/java包中。

      其中生成的Model中UserInfo如下：

UserInfo.java（其中List<CourseInfo> courseInfos手动添加的）

package 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;
    }

}

   Dao包中的UserInfoMapper.java

  

package 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 中的配置文件UserInfoMapper.xml

<?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>

4、引入Spring并配置相关属性

     在src/main/resources创建spring的配置文件，这里创建了spring.xml，信息如下：

   

<?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将其注入为bean -->
    <context:component-scan base-package="org.andy.shop.service" />

</beans>

5、引入Mybatis并配置数据连接池等信息

 5.1、数据连接池druid配置信息

   配置连接池配置信息在config.properties中，如下：

 

#mysql version database druid setting
validationQuery=SELECT 1
jdbc.url=jdbc:mysql://localhost:3306/shop?useUnicode=true&characterEncoding=utf-8
jdbc.username=root
jdbc.password=12345

5.2、配置Mybatis相关信息

    以下是mybatis的配置信息：spring-mybatis.xml（ps：名字可随便起）

<?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="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <!-- 自动扫描entity目录, 省掉Configuration.xml里的手工配置 -->
        <property name="mapperLocations" value="classpath:org/andy/shop/mapping/*.xml" />
    </bean>

    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="org.andy.shop.dao" />
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
    </bean>

    <!-- 配置事务管理器 -->
    <bean id="transactionManager"
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource" />
    </bean>

    <!-- 注解方式配置事物 -->
    <!-- <tx:annotation-driven transaction-manager="transactionManager" /> -->

    <!-- 拦截器方式配置事物 -->
    <tx:advice id="transactionAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="insert*" propagation="REQUIRED" />
            <tx:method name="update*" propagation="REQUIRED" />
            <tx:method name="delete*" propagation="REQUIRED" />

            <tx:method name="get*" propagation="SUPPORTS" read-only="true" />
            <tx:method name="find*" propagation="SUPPORTS" read-only="true" />
            <tx:method name="select*" propagation="SUPPORTS" read-only="true" />

        </tx:attributes>
    </tx:advice>
    <!-- Spring aop事务管理 -->
    <aop:config>
        <aop:pointcut id="transactionPointcut"
            expression="execution(* org.andy.shop.service..*Impl.*(..))" />
        <aop:advisor pointcut-ref="transactionPointcut"
            advice-ref="transactionAdvice" />
    </aop:config>

</beans>

主要配置数据连接池，事务管理， mybatis关联映射等，事务采用aop的声明式事务。

6、引入日志

     在src/main/resources中添加log4j日志配置信息：

   log4j.properties

### 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

7、创建Service

    在src/main/java中创建相关的org.andy.shop.service包和org.andy.shop.service.Impl包。

    UserService接口：

 

package 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);
}

   UserServiceImpl实现Service：

package 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;
    }

}

8、测试Spring和Mybatis配置

   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：

package 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。

9、引入SpringMVC

9.1 配置SpringMVC配置信息

    SpringMVC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：

<?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AJAX时,返回JSON出现下载文件 -->
    <bean id="mappingJacksonHttpMessageConverter"
        class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
        <property name="supportedMediaTypes">
            <list>
                <value>text/html;charset=UTF-8</value>
            </list>
        </property>
    </bean>

    <!-- 启动Spring MVC的注解功能，完成请求和注解POJO的映射 -->
    <bean
        class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
        <property name="messageConverters">
            <list>
                <!-- json转换器 -->
                <ref bean="mappingJacksonHttpMessageConverter" />
            </list>
        </property>
    </bean>

    <!-- 对模型视图名称的解析，即在模型视图名称添加前后缀 -->
    <bean
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass"
            value="org.springframework.web.servlet.view.JstlView" />
        <property name="prefix" value="/WEB-INF/views" />
        <property name="suffix" value=".jsp" />
    </bean>

    <!-- 配置多文件上传 -->
    <bean id="multipartResolver"
        class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <property name="defaultEncoding">
            <value>UTF-8</value>
        </property>
        <property name="maxUploadSize">
            <!-- 上传文件大小限制为31M，31*1024*1024 -->
            <value>32505856</value>
        </property>
        <property name="maxInMemorySize">
            <value>4096</value>
        </property>
    </bean>

</beans>

  自动扫描org.andy.shop.controller报下还有@Controller的控制层，注入为bean。

9.2、Web容器web.xml配置

    web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）

<?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>

9.3、Controller控制层

    在org.andy.shop.controller创建控制层，如UserController.java

 

package 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;
    }
}

9.4、视图层

  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。

 

<%@ 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>

9.5、项目总目录结构

   到此为demo以及基本创建完成总目录如下：

    

10、项目测试

    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

后续

    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：

       

<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>

   上述文件添加在<build></build>节点中。

   3、项目导入注意事项

     下载完之后，只保留pom.xml 和 src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、Java Build 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