Maven搭建SpringMVC+Mybatis项目详解

yaohong

发布于 2019-09-11 17:56:12

6320

发布于 2019-09-11 17:56:12

文章被收录于专栏：姚红专栏

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。（如果是Oracle需修改pom.xml）

    <!-- oracle连接 -->
    <dependency>
      <groupId>com.hynnet</groupId>
      <artifactId>oracle-driver-ojdbc6</artifactId>
      <version>12.1.0.1</version>
    </dependency>

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 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:\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）

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>

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

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原始发表：2016-10-15 ，如有侵权请联系 cloudcommunity@tencent.com 删除

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