Maven搭建SpringMVC+MyBatis+Json项目（多模块项目）

2021-09-18 00:22:07

一、开发环境

Eclipse:eclipse-jee-luna-SR1a-win32;

JDK:jdk-8u121-windows-i586.exe;

MySql:MySQL Server 5.5;

二、创建Maven项目

1.创建父项目

NEW->PROJECT->MAVEN->Maven Project,点击next>进入下一步，可以看到New Maven Project界面,

点击Next >进入下一步,进入Select an Archetype界面，在Filter:输入simple,选择org.apache.maven.archetypes,

点击next>,进入Enter a group id for the artifact界面，

填写好Group Id和Artifact Id，我这里在ssm分组下创建了一个parent项目。点击Finish。

2.创建子项目

选中parent项目，右键，选择new->project->maven->maven Module,点击Next,进入Enter a module name界面，

填写Module Name，点击next>,进入Select an Archetype界面，

在Filter输入start，选择maven-archetype-quickstart，点击next>,进入Specify Archetype parameters界面，

修改Package,点击Finish。就会创建parent项目下的一个子项目dao。

打开parent项目的pom.xml

可以看到有个<moduls><module>dao</module></modules>,这说明dao已经是parent项目的子项目了。

接着我们按照上述方法继续创建子项目service和model。

创建web子项目时，在进入Select an Archetype界面，在Filter填写web，选择org.apache.maven.archetypes.

点击next>,修改package，最后点击Finish。

这样，我们的父项目和所有子项目就已经创建完了。如下图：

右键web子项目(其他子项目操作相同)，build path->configure build path,打开Java Build Path，点击Libraies页，

如图，删除JRE System Lirary[J2SE-1.5]，重新选择你自己的jdk；

三、添加Springmvc+MyBatis依赖的jar包

在父类的pom.xml中添加SpringMvc+MyBatis所有依赖包

 <?xml version="1.0" encoding="UTF-8"?>

 <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/xsd/maven-4.0.0.xsd">

     <modelVersion>4.0.0</modelVersion>

     <groupId>ssm</groupId>

     <artifactId>parent</artifactId>

     <version>1</version>

     <packaging>pom</packaging>

     <distributionManagement>

         <site>

             <id>website</id>

             <url>scp://webhost.company.com/www/website</url>

         </site>

     </distributionManagement>

     <properties>

         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

           <!-- spring版本号 -->

         <spring.version>4.0.2.RELEASE</spring.version>

          <!-- mybatis版本号 -->

         <mybatis.version>3.2.6</mybatis.version>

          <!-- log4j日志文件管理包版本 -->

         <slf4j.version>1.7.7</slf4j.version>

         <log4j.version>1.2.17</log4j.version>

     </properties>

     <modules>

         <module>dao</module>

         <module>web</module>

         <module>service</module>

         <module>model</module>

     </modules>

     <!--   <dependencyManagement> -->

   <dependencies>

     <dependency>

         <groupId>junit</groupId>

         <artifactId>junit</artifactId>

         <version>4.11</version>

          <!-- 表示开发的时候引入，发布的时候不会加载此包 -->

         <scope>test</scope>

     </dependency>

     <!-- spring核心包 -->

     <dependency>

         <groupId>org.springframework</groupId>

         <artifactId>spring-core</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-oxm</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-jdbc</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-aop</artifactId>

         <version>${spring.version}</version>

     </dependency>

     <dependency>

         <groupId>org.springframework</groupId>

         <artifactId>spring-context-support</artifactId>

         <version>${spring.version}</version>

     </dependency>

     <dependency>

         <groupId>org.springframework</groupId>

         <artifactId>spring-test</artifactId>

         <version>${spring.version}</version>

     </dependency>

      <!-- mybatis核心包 -->

     <dependency>

         <groupId>org.mybatis</groupId>

         <artifactId>mybatis</artifactId>

         <version>${mybatis.version}</version>

     </dependency>

       <!-- mybatis/spring包 -->

     <dependency>

         <groupId>org.mybatis</groupId>

         <artifactId>mybatis-spring</artifactId>

         <version>1.2.2</version>

     </dependency>

       <!-- 导入java ee jar 包 -->

     <dependency>

         <groupId>javax</groupId>

         <artifactId>javaee-api</artifactId>

         <version>7.0</version>

         <scope>provided</scope>

         <exclusions>

             <exclusion>

                 <groupId>javax</groupId>

                 <artifactId>javaee-api</artifactId>

             </exclusion>

         </exclusions>

     </dependency>  

       <!-- 导入Mysql数据库链接jar包 -->

     <dependency>

         <groupId>mysql</groupId>

         <artifactId>mysql-connector-java</artifactId>

         <version>5.1.30</version>

     </dependency>

     <!-- 导入dbcp的jar包，用来在applicationContext.xml中配置数据库 -->

     <dependency>

         <groupId>commons-dbcp</groupId>

         <artifactId>commons-dbcp</artifactId>

         <version>1.2.2</version>

     </dependency>

       <!-- JSTL标签类 -->

     <dependency>

         <groupId>jstl</groupId>

         <artifactId>jstl</artifactId>

         <version>1.2</version>

     </dependency>

      <!-- 日志文件管理包 -->

     <!-- log start -->

     <dependency>

         <groupId>log4j</groupId>

         <artifactId>log4j</artifactId>

         <version>${log4j.version}</version>

     </dependency>

     <!-- 格式化对象，方便输出日志 -->

     <dependency>

         <groupId>com.alibaba</groupId>

         <artifactId>fastjson</artifactId>

         <version>1.1.41</version>

     </dependency>

     <dependency>

         <groupId>org.slf4j</groupId>

         <artifactId>slf4j-api</artifactId>

         <version>${slf4j.version}</version>

     </dependency>

     <dependency>

         <groupId>org.slf4j</groupId>

         <artifactId>slf4j-log4j12</artifactId>

         <version>${slf4j.version}</version>

     </dependency>

     <!-- log end -->

     <!-- 映入JSON -->

     <dependency>

         <groupId>org.codehaus.jackson</groupId>

         <artifactId>jackson-mapper-asl</artifactId>

         <version>1.9.13</version>

     </dependency>

        <!-- 上传组件包 -->

     <dependency>

         <groupId>commons-fileupload</groupId>

         <artifactId>commons-fileupload</artifactId>

         <version>1.3.1</version>

     </dependency>

     <dependency>

         <groupId>commons-io</groupId>

         <artifactId>commons-io</artifactId>

         <version>2.4</version>

     </dependency>

     <dependency>

         <groupId>commons-codec</groupId>

         <artifactId>commons-codec</artifactId>

         <version>1.9</version>

     </dependency>

     <!-- https://mvnrepository.com/artifact/org.mybatis.generator/mybatis-generator-core自动创建代码 -->

 <dependency>

     <groupId>org.mybatis.generator</groupId>

     <artifactId>mybatis-generator-core</artifactId>

     <version>1.3.5</version>

 </dependency>

 <dependency>

     <groupId>com.fasterxml.jackson.dataformat</groupId>

     <artifactId>jackson-dataformat-xml</artifactId>

     <version>2.3.2</version>

 </dependency>

 <dependency>

     <groupId>com.fasterxml.jackson.core</groupId>

     <artifactId>jackson-databind</artifactId>

     <version>2.3.2</version>

 </dependency>

 <dependency>

     <groupId>com.fasterxml.jackson.core</groupId>

     <artifactId>jackson-annotations</artifactId>

     <version>2.3.2</version>

 </dependency>  

 <dependency>

     <groupId>com.fasterxml.jackson.core</groupId>

     <artifactId>jackson-core</artifactId>

     <version>2.3.2</version>

 </dependency>  

 </dependencies>

 <!--  </dependencyManagement> -->

 </project>

pom.xml

四，自动生成代码

1.创建数据库和表

/*

Navicat MySQL Data Transfer

Source Server         : localhost

Source Server Version : 50521

Source Host           : localhost:3306

Source Database       : test

Target Server Type    : MYSQL

Target Server Version : 50521

File Encoding         : 65001

Date: 2017-03-28 11:11:09

*/

SET FOREIGN_KEY_CHECKS=0;

-- ----------------------------

-- Table structure for `user_t`

-- ----------------------------

DROP TABLE IF EXISTS `user_t`;

CREATE TABLE `user_t` (

  `id` int(10) unsigned NOT NULL AUTO_INCREMENT,

  `user_name` varchar(255) DEFAULT NULL,

  `password` varchar(255) DEFAULT NULL,

  `age` int(11) DEFAULT NULL,

  PRIMARY KEY (`id`)

) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8;

-- ----------------------------

-- Records of user_t

-- ----------------------------

INSERT INTO `user_t` VALUES ('', '张三', '', '');

2.利用mybatis-generator-core-1.3.5.jar自动创建代码

1.在本地创建一个文件夹（我在D盘创建了一个generator文件夹）；

2.在generator文件夹下创建一个src文件夹，

3.添加2个jar包mybatis-generator-core-1.3.5.jar和mysql-connector-java-5.1.30.jar

4.在创建一个generatorConfig.xml

 <?xml version="1.0" encoding="UTF-8"?>

 <!DOCTYPE generatorConfiguration

 PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"

 "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">

 <generatorConfiguration>

     <!-- 数据库驱动 -->

     <classPathEntry location="mysql-connector-java-5.1.30.jar" />

     <context id="DB2Tables" targetRuntime="MyBatis3">

         <commentGenerator>

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

             <!-- 是否去除自动生成的注释 true：是 ： false:否 -->

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

         </commentGenerator>

         <!--数据库链接URL，用户名、密码 -->

         <jdbcConnection driverClass="com.mysql.jdbc.Driver"

             connectionURL="jdbc:mysql://127.0.0.1:3306/test" userId="root"

             password="root">

         </jdbcConnection>

         <javaTypeResolver>

             <property name="forceBigDecimals" value="false" />

         </javaTypeResolver>

         <!-- 生成模型的包名和位置 -->

         <javaModelGenerator targetPackage="com.gwx.model"

             targetProject="src">

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

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

         </javaModelGenerator>

         <!-- 生成映射文件的包名和位置 -->

         <sqlMapGenerator targetPackage="com.gwx.mapping"

             targetProject="src">

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

         </sqlMapGenerator>

         <!-- 生成DAO的包名和位置 -->

         <javaClientGenerator type="XMLMAPPER"

             targetPackage="com.gwx.dao" targetProject="src">

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

         </javaClientGenerator>

         <!-- 要生成的表 tableName是数据库中的表名或视图名 domainObjectName是实体类名 -->

         <table tableName="user_t" domainObjectName="User"

             enableCountByExample="false" enableUpdateByExample="false"

             enableDeleteByExample="false" enableSelectByExample="false"

             selectByExampleQueryId="false"></table>

     </context>

 </generatorConfiguration>

generatorConfig.xml

5创建一个start.bat

 set current_path="%cd%"

 java -jar mybatis-generator-core-1.3.5.jar -configfile generatorConfig.xml -overwrite

 pause

 exit

start.bat

整体目录结构如下：

然后运行start.bat（双击），则自动生成了dao,mapping,model代码

五、添加子项目之间的依赖

1.给web子项目添加service子项目的依赖

打开web项目的pom.xml

给<dependencies>下添加

<dependency>
<groupId>ssm</groupId>
<artifactId>service</artifactId>
<version>1</version>
</dependency>

完整web/pom.xml如下：

 <?xml version="1.0"?>

 <project

     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"

     xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">

     <modelVersion>4.0.0</modelVersion>

     <parent>

         <groupId>ssm</groupId>

         <artifactId>parent</artifactId>

         <version>1</version>

     </parent>

     <artifactId>web</artifactId>

     <packaging>war</packaging>

     <dependencies>

         <dependency>

             <groupId>junit</groupId>

             <artifactId>junit</artifactId>

             <version>3.8.1</version>

             <scope>test</scope>

         </dependency>

         <dependency>

             <groupId>ssm</groupId>

             <artifactId>service</artifactId>

             <version>1</version>

         </dependency>

     </dependencies>

     <build>

         <finalName>web</finalName>

         <plugins>

             <plugin>

                 <groupId>org.apache.tomcat.maven</groupId>

                 <artifactId>tomcat7-maven-plugin</artifactId>

                 <version>2.2</version>

             </plugin>

         </plugins>

     </build>

 </project>

web/pom.xml

2.给service子项目添加dao子项目的依赖

打开service项目的pom.xml

给<dependencies>下添加

完整service/pom.xml如下：

 <?xml version="1.0"?>

 <project

     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"

     xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">

     <modelVersion>4.0.0</modelVersion>

     <parent>

         <groupId>ssm</groupId>

         <artifactId>parent</artifactId>

         <version>1</version>

     </parent>

     <artifactId>service</artifactId>

     <name>service</name>

     <url>http://maven.apache.org</url>

     <properties>

         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

     </properties>

     <dependencies>

         <dependency>

             <groupId>junit</groupId>

             <artifactId>junit</artifactId>

             <version>3.8.1</version>

             <scope>test</scope>

         </dependency>

         <dependency>

             <groupId>ssm</groupId>

             <artifactId>dao</artifactId>

             <version>1</version>

         </dependency>

     </dependencies>

 </project>

service/pom.xml

3.给dao子项目添加model子项目的依赖

打开dao项目的pom.xml

给<dependencies>下添加

<dependency>
<groupId>ssm</groupId>
<artifactId>model</artifactId>
<version>1</version>
</dependency>

完整dao/pom.xml如下：

 <?xml version="1.0"?>

 <project

     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"

     xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">

     <modelVersion>4.0.0</modelVersion>

     <parent>

         <groupId>ssm</groupId>

         <artifactId>parent</artifactId>

         <version>1</version>

     </parent>

     <artifactId>dao</artifactId>

     <name>dao</name>

     <url>http://maven.apache.org</url>

     <properties>

         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

     </properties>

     <dependencies>

         <dependency>

             <groupId>junit</groupId>

             <artifactId>junit</artifactId>

             <version>3.8.1</version>

             <scope>test</scope>

         </dependency>

         <dependency>

             <groupId>ssm</groupId>

             <artifactId>model</artifactId>

             <version>1</version>

         </dependency>

     </dependencies>

 </project>

dao/pom.xml

整个项目依赖关系添加完毕：web依赖service，service依赖dao，dao依赖model，parent是父项目

六、添加代码

1.model子项目创建com.gwx.model包，将上面第四节自动生成model目录下的代码复制到com.gwx.model包下；

2.dao子项目src/main/java下创建com.gwx.dao和在src/main/resources下创建mapping包，将上面第四节自动生成dao目录下的的代码复制到

com.gwx.dao包下，将mapping目录下自动生成的代码复制到mapping包下；

3.service子项目创建com.gwx.service包和com.gwx.service.impl包，在com.gwx.service包下创建接口IUserService

 package com.gwx.service;

 import com.gwx.model.User;

 public interface IUserService {

     User getUserById(int id);

 }

IUserService.java

在com.gwx.service.impl包下创建UserService

 package com.gwx.service.impl;

 import javax.annotation.Resource;

 import org.springframework.stereotype.Service;

 import com.gwx.dao.UserMapper;

 import com.gwx.model.User;

 import com.gwx.service.IUserService;

 @Service("userService")

 public class UserService implements IUserService {

     @Resource

     private UserMapper userDao;

     public User getUserById(int userId) {

         return this.userDao.selectByPrimaryKey(userId);

     }

 }

UserService

七、Spring与MyBatis的整合

1.在子项目web项目中的resources目录下创建jdbc.properties

 driver=com.mysql.jdbc.Driver

 url=jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&characterEncoding=UTF-8

 username=root

 password=root

 #定义初始连接数

 initialSize=0

 #定义最大连接数

 maxActive=20

 #定义最大空闲

 maxIdle=20

 #定义最小空闲

 minIdle=1

 #定义最长等待时间

 maxWait=60000

jdbc.properties

2.Log4j的配置(可有可无)

在你需要查看日志的子项目的resources目录下创建log4j.properties

 #定义LOG输出级别

 log4j.rootLogger=INFO,Console,File

 #定义日志输出目的地为控制台

 log4j.appender.Console=org.apache.log4j.ConsoleAppender

 log4j.appender.Console.Target=System.out

 #可以灵活地指定日志输出格式，下面一行是指定具体的格式

 log4j.appender.Console.layout = org.apache.log4j.PatternLayout

 log4j.appender.Console.layout.ConversionPattern=[%c] - %m%n

 #文件大小到达指定尺寸的时候产生一个新的文件

 log4j.appender.File = org.apache.log4j.RollingFileAppender

 #指定输出目录

 log4j.appender.File.File = logs/web/log.log

 #定义文件最大大小

 log4j.appender.File.MaxFileSize = 10MB

 #输出所以日志，如果换成DEBUG表示输出DEBUG以上级别日志

 log4j.appender.File.Threshold = ALL

 log4j.appender.File.layout = org.apache.log4j.PatternLayout

 log4j.appender.File.layout.ConversionPattern =[%p] [%d{yyyy-MM-dd HH\:mm\:ss}][%c]%m%n

log4j.properties

3.在子项目dao层的resources目录下创建spring-mybatis.xml

 <?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:p="http://www.springframework.org/schema/p"

     xmlns:context="http://www.springframework.org/schema/context"

     xmlns:mvc="http://www.springframework.org/schema/mvc"

     xsi:schemaLocation="http://www.springframework.org/schema/beans

                         http://www.springframework.org/schema/beans/spring-beans-4.0.xsd

                         http://www.springframework.org/schema/context

                         http://www.springframework.org/schema/context/spring-context-4.0.xsd

                         http://www.springframework.org/schema/mvc

                         http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">

 <!--     自动扫描 -->

     <context:component-scan base-package="com.gwx.dao" />

     <context:component-scan base-package="com.gwx.service" />

     <context:component-scan base-package="com.gwx.service.impl" />

     <context:component-scan base-package="com.gwx.controller" />

     <!-- 引入配置文件 -->

     <bean id="propertyConfigurer"

         class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">

         <property name="location" value="classpath:jdbc.properties" />

     </bean>

     <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"

         destroy-method="close">

         <property name="driverClassName" value="${driver}" />

         <property name="url" value="${url}" />

         <property name="username" value="${username}" />

         <property name="password" value="${password}" />

         <!-- 初始化连接大小 -->

         <property name="initialSize" value="${initialSize}"></property>

         <!-- 连接池最大数量 -->

         <property name="maxActive" value="${maxActive}"></property>

         <!-- 连接池最大空闲 -->

         <property name="maxIdle" value="${maxIdle}"></property>

         <!-- 连接池最小空闲 -->

         <property name="minIdle" value="${minIdle}"></property>

         <!-- 获取连接最大等待时间 -->

         <property name="maxWait" value="${maxWait}"></property>

     </bean>

     <!-- spring和MyBatis完美整合，不需要mybatis的配置映射文件 -->

     <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">

         <property name="dataSource" ref="dataSource" />

         <!-- 自动扫描mapping.xml文件 -->

         <property name="mapperLocations" value="classpath:mapping/*.xml"></property>

     </bean>

     <!-- DAO接口所在包名，Spring会自动查找其下的类 -->

     <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">

         <property name="basePackage" value="com.gwx.dao" />

         <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>

     </bean>

     <!-- (事务管理)transaction manager, use JtaTransactionManager for global tx -->

     <bean id="transactionManager"

         class="org.springframework.jdbc.datasource.DataSourceTransactionManager">

         <property name="dataSource" ref="dataSource" />

     </bean>

 </beans>

spring-mybatis.xml

4.Junit测试

先将parent/pom.xml,model/pom.xml,dao/pom.xml,service/pom.xml中的

<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>

</dependency>

删除；将web/pom.xml

中的修改为

<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>

</dependency>

再右键web项目->properties->Java Compiler->修改为和你当前jdk版本一致；(我本地的jdk版本为1.8)如图

在web项目中的src/main/java包下创建com/gwx/test包，创建TestMyBatis.java

 package com.gwx.test;

 import javax.annotation.Resource;

 import org.junit.Test;

 import org.junit.runner.RunWith;

 import org.springframework.test.context.ContextConfiguration;

 import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

 import com.gwx.model.User;

 import com.gwx.service.IUserService;

 @RunWith(SpringJUnit4ClassRunner.class) // 表示继承了SpringJUnit4ClassRunner类

 @ContextConfiguration(locations = { "classpath:spring-mybatis.xml" })

 public class TestMyBatis {

     @Resource

     private IUserService userService;

     @Test

     public void test() {

         User user = userService.getUserById(1);

          System.out.println(user.getUserName());

     }

 }

TestMyBatis.java

运行。控制台出现'张三'则表示整合成功！

八、SpringMVC整合

在web子项目的resources下创建spring-mvc.xml

 <?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:p="http://www.springframework.org/schema/p"

     xmlns:context="http://www.springframework.org/schema/context"

     xmlns:mvc="http://www.springframework.org/schema/mvc"

     xsi:schemaLocation="http://www.springframework.org/schema/beans

                             http://www.springframework.org/schema/beans/spring-beans-3.1.xsd

                             http://www.springframework.org/schema/context

                             http://www.springframework.org/schema/context/spring-context-3.1.xsd

                             http://www.springframework.org/schema/mvc

                             http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">

     <!--避免IE执行AJAX时，返回JSON出现下载文件 -->

     <bean id="stringHttpMessageConverter"

     class="org.springframework.http.converter.StringHttpMessageConverter">

         <property name="supportedMediaTypes">

             <list>

                 <value>text/plain;charset=UTF-8</value>

                 <value>application/json;charset=UTF-8</value>

             </list>

         </property>

     </bean>

     <!-- 避免IE执行AJAX时,返回JSON出现下载文件 -->

     <!-- Jackson 是Spring 自带的功能 -->

     <bean id="mappingJackson2HttpMessageConverter"

         class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">

         <property name="supportedMediaTypes">

             <list>

                 <value>application/json;charset=UTF-8</value>

                 <value>application/xml;charset=UTF-8</value>

                 <value>text/html;charset=UTF-8</value>

                 <value>text/plain;charset=UTF-8</value>

                 <value>text/xml;charset=UTF-8</value>

                 <value>text/javascript;charset=UTF-8</value>

             </list>

         </property>

     </bean>

     <!-- 启动SpringMVC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="mappingJackson2HttpMessageConverter" />

             </list>

         </property>

     </bean>

     <!-- 对静态资源的访问 -->

     <!-- <mvc:resources mapping="/js/**" location="/js/" /><mvc:resources mapping="/css/**"

         location="/css/" /> -->

     <!-- 自动扫描该包，使SpringMVC认为包下用了@controller注解的类是控制器 -->

     <context:component-scan base-package="com.gwx.controller" />

     <!-- 添加注解驱动 -->

     <mvc:annotation-driven enable-matrix-variables="true" >

      <mvc:message-converters>

             <ref bean="stringHttpMessageConverter" />

             <ref bean="mappingJackson2HttpMessageConverter" />

         </mvc:message-converters>

      </mvc:annotation-driven>

     <!-- 允许对静态资源文件的访问 -->

     <mvc:default-servlet-handler />

     <!-- 定义跳转的文件的前后缀 ，视图模式配置 -->

     <bean

         class="org.springframework.web.servlet.view.InternalResourceViewResolver">

         <!-- 这里的配置我的理解是自动给后面action的方法return的字符串加上前缀和后缀，变成一个 可用的url地址 -->

         <property name="prefix" value="/WEB-INF/jsp/" />

         <property name="suffix" value=".jsp" />

     </bean>

     <!-- 配置文件上传，如果没有使用文件上传可以不用配置，当然如果不配，那么配置文件中也不必引入上传组件包 -->

     <bean id="multipartResolver"

         class="org.springframework.web.multipart.commons.CommonsMultipartResolver">

         <!-- 默认编码 -->

         <property name="defaultEncoding" value="utf-8" />

         <!-- 文件大小最大值 -->

         <property name="maxUploadSize" value="10485760000" />

         <!-- 内存中的最大值 -->

         <property name="maxInMemorySize" value="40960" />

     </bean>

 </beans>

spring-mvc.xml

再配置web.xml

 <?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"

     xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"

     version="3.0">

     <display-name>Archetype Created Web Application</display-name>

     <!-- Spring和mybatis的配置文件 -->

     <context-param>

         <param-name>contextConfigLocation</param-name>

         <param-value>classpath:spring-mybatis.xml</param-value>

     </context-param>

     <!-- 编码过滤器 -->

     <filter>

         <filter-name>encodingFilter</filter-name>

         <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>

         <async-supported>true</async-supported>

         <init-param>

             <param-name>encoding</param-name>

             <param-value>UTF-8</param-value>

         </init-param>

     </filter>

     <filter-mapping>

         <filter-name>encodingFilter</filter-name>

         <url-pattern>/*</url-pattern>

     </filter-mapping>

     <!-- Spring监听器 -->

     <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>

     <!-- Spring MVC servlet -->

     <servlet>

         <servlet-name>SpringMVC</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>

         <async-supported>true</async-supported>

     </servlet>

     <servlet-mapping>

         <servlet-name>SpringMVC</servlet-name>

         <!-- 此处可以可以配置成*.do，对应struts的后缀习惯 -->

         <url-pattern>/</url-pattern>

     </servlet-mapping>

     <welcome-file-list>

         <welcome-file>/index.html</welcome-file>

         <welcome-file>/index.jsp</welcome-file>

     </welcome-file-list>

 </web-app>

web.xml

在web子项目的 Java Resources下创建package com.gwx.controller,在com.gwx.controller下面创建UserController.java

 package com.gwx.controller;

 import javax.annotation.Resource;

 import javax.servlet.http.HttpServletRequest;

 import org.springframework.stereotype.Controller;

 import org.springframework.ui.Model;

 import org.springframework.web.bind.annotation.RequestMapping;

 import org.springframework.web.bind.annotation.ResponseBody;

 import com.gwx.model.User;

 import com.gwx.service.IUserService;

 import com.gwx.util.JacksonUtil;

 @Controller

 @RequestMapping("/user")

 public class UserController {

     @Resource

     private IUserService userService;

     @RequestMapping("/showUser")

     public String toIndex(HttpServletRequest request, Model model) {

         User user = this.userService.getUserById(1);

         model.addAttribute("user", user);

         return "User";

     }

     @RequestMapping("/showJson")

     @ResponseBody

     public String showJson(int id) {

         User user = this.userService.getUserById(id);

         String jSon = JacksonUtil.toJSon(user);

         return jSon;

     }

 }

UserController

在model子项目下创建package com.gwx.util,在com.gwx.util下面创建JacksonUtil.java和httpModel.java

 package com.gwx.util;

 import java.io.Serializable;

 public class HttpModel implements Serializable{

     /**

      *

      */

     private static final long serialVersionUID = -7484615771443870211L;

     private int code = 0;

     private Object object;

     public int getCode() {

         return code;

     }

     public void setCode(int code) {

         this.code = code;

     }

     public Object getObject() {

         return object;

     }

     public void setObject(Object object) {

         this.object = object;

     }

 }

HttpModel.java

 package com.gwx.util;

 import java.util.UUID;

 import com.fasterxml.jackson.core.type.TypeReference;

 import com.fasterxml.jackson.databind.ObjectMapper;

 /**

  * The class JacksonUtil

  *

  * json字符与对像转换

  *

  * @version: $Revision$ $Date$ $LastChangedBy$

  *

  */

 public final class JacksonUtil {

     public static ObjectMapper objectMapper;

     /**

      * 使用泛型方法，把json字符串转换为相应的JavaBean对象。

      * (1)转换为普通JavaBean：readValue(json,Student.class)

      * (2)转换为List,如List<Student>,将第二个参数传递为Student

      * [].class.然后使用Arrays.asList();方法把得到的数组转换为特定类型的List

      *

      * @param jsonStr

      * @param valueType

      * @return

      */

     public static <T> T readValue(String jsonStr, Class<T> valueType) {

         if (objectMapper == null) {

             objectMapper = new ObjectMapper();

         }

         try {

             return objectMapper.readValue(jsonStr, valueType);

         } catch (Exception e) {

             e.printStackTrace();

         }

         return null;

     }

     /**

      * json数组转List

      * @param jsonStr

      * @param valueTypeRef

      * @return

      */

     public static <T> T readValue(String jsonStr, TypeReference<T> valueTypeRef){

         if (objectMapper == null) {

             objectMapper = new ObjectMapper();

         }

         try {

             return objectMapper.readValue(jsonStr, valueTypeRef);

         } catch (Exception e) {

             e.printStackTrace();

         }

         return null;

     }

     /**

      * 把JavaBean转换为json字符串

      *

      * @param object

      * @return

      */

     public static String toJSon(Object object) {

         if (objectMapper == null) {

             objectMapper = new ObjectMapper();

         }

         try {

             return objectMapper.writeValueAsString(object);

         } catch (Exception e) {

             e.printStackTrace();

         }

         return null;

     }

     /**

      * 生成手机令牌

      * @return

      */

     public final static String generateToken() {

         return UUID.randomUUID().toString().replace("-", "");

     }

     public static String toHttpJson(int code,Object object)

     {

         HttpModel model = new HttpModel();

         model.setCode(code);

         model.setObject(object);

         return JacksonUtil.toJSon(model);

     }

 }

JacksonUtil.java

在web项目的src/main/webapp/WEB-INF下创建jsp文件夹，然后创建User.jsp

 <%@ 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>姓名</title>

 </head>

 <body>${user.userName}

 </body>

 </html>

User.jsp

此时，springmvc和json都已经整合完成！

开始运行web项目—>右键web->Run as->Run configurations->

左侧选择Maven Build

右侧在Name出填写你的name

在Main页的Base directory出选择web项目，在Goals出输入 tomcat7:run

在JRE页选择你自己的jdk

然后切换到Main页，点击Run。

如果没有报错或者异常，应该就没问题了！

然后springmvc测试

在浏览器上输入网址http://localhost:8080/web/user/showUser?id=1就会返回到User.jsp页面。如图：

json测试：输入网址http://localhost:8080/web/user/showJson?id=1返回结果：

OK！

九、总结

以上就是最近整合的springmvc+mybatis+json的Maven管理一整套项目！是我亲自一步步搭建成功！

如果大家发现有什么问题，欢迎指正批评！

如果想要转载，请加载转载地址【http://www.cnblogs.com/gwx238044/articles/6633252.html】!

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