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Maven搭建SpringMVC+Mybatis项目详解

2016-10-27 09:11 477 查看

前言

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

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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>


<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>


<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.2.8</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>5.1.34</version>
</dependency>


<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>


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


<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>


<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>

<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>

<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>


<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>


<plugin>
<groupId>org.codehaus.cargo</groupId>
<artifactId>cargo-maven2-plugin</artifactId>
<version>1.0</version>
<configuration>
<container>
<containerId>tomcat6x</containerId>
<home>D:\WebServer\apache-tomcat-6.0.39</home>
</container>
<configuration>
<type>existing</type>
<home>D:\WebServer\apache-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）

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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

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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

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<?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：

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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：

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#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）

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<?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
">


<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}" />


<property name="initialSize" value="0" />

<property name="maxActive" value="20" />


<property name="minIdle" value="0" />

<property name="maxWait" value="60000" />
<property name="poolPreparedStatements" value="true" />
<property name="maxPoolPreparedStatementPerConnectionSize"
value="33" />

<property name="validationQuery" value="${validationQuery}" />
<property name="testOnBorrow" value="false" />
<property name="testOnReturn" value="false" />
<property name="testWhileIdle" value="true" />

<property name="timeBetweenEvictionRunsMillis" value="60000" />

<property name="minEvictableIdleTimeMillis" value="25200000" />

<property name="removeAbandoned" value="true" />

<property name="removeAbandonedTimeout" value="1800" />

<property name="logAbandoned" value="true" />

<property name="filters" value="mergeStat" />
</bean>


<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />

<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>


<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>





<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>

<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

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### 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：

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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：

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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：

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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：

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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">

<context:component-scan base-package="org.andy.shop.controller" />


<bean id="mappingJacksonHttpMessageConverter"
class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
<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="viewClass"
value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/WEB-INF/views" />
<property name="suffix" value=".jsp" />
</bean>


<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="defaultEncoding">
<value>UTF-8</value>
</property>
<property name="maxUploadSize">

<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）

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<?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>


<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>


<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

[java]
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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。

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<%@ 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：

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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>

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

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