Maven + SSM环境搭建

Maven + SSM

之前Maven+SSM都是照着搭建的，自己想写点什么的时候发现搭建的过程不清楚。

于是花了时间边整理思路边搭建，并把搭建过程记录下来。

视频看来终觉浅，还是需要自己动手实践，捋顺思路记忆才会深刻。

构建Maven相关工程和模块

首先创建一个父工程，选择Maven Project选项。

勾选上Create a simple project,然后点击next

注意父工程打包方式为pom

点击finish，父工程创建完成。

将鼠标移动到之前创建好的demo-parent,点击鼠标右键，选择Maven->New Maven Module Project.

(也可直接创建Maven Module然后指定parent。)

模块名为demo-dao,Parent Project为demo-parent.

注意打包方式为jar，点击finish即可，demo-dao模块就创建完成了。

按照相同的方法创建Service模块，注意打包方式也为jar。

接下来创建demo-web

此处注意打包方式为war

创建完demo-web后会发现，报错这时因为打包为war，因为标准的web程序结构，

而我们目录结构的webapp下缺少WEB-INF文件夹和web.xml文件。

接下来我们创建一个WEB-INF文件夹，然后在其中创建一个空的web.xml文件。

web.xml内容如下所示：

<?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_2_5.xsd" version="2.5">
  <display-name>demo-web</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
</web-app>

接下来创建demo-pojo,存放所有pojo. (也要选择create a simple project)

打包方式同样为jar

依赖项

首先编辑demo-parent中的pom.xml

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/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.demo</groupId>
  <artifactId>demo-parent</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>pom</packaging>
  <modules>
  	<module>demo-dao</module>
  	<module>demo-service</module>
  	<module>demo-web</module>
  	<module>demo-pojo</module>
  </modules>
  
    <!-- 集中定义依赖版本号 -->
	<properties>
		<junit.version>4.12</junit.version>
		<spring.version>4.2.4.RELEASE</spring.version>
		<pagehelper.version>4.0.0</pagehelper.version>
		<servlet-api.version>2.5</servlet-api.version>	
		<mybatis.version>3.2.8</mybatis.version>
		<mybatis.spring.version>1.2.2</mybatis.spring.version>
		<mybatis.paginator.version>1.2.15</mybatis.paginator.version>
		<mysql.version>8.0.11</mysql.version>		
		<druid.version>1.0.15</druid.version>		
	</properties>
	
	<dependencyManagement>
		<dependencies>	
			<!-- Spring -->
			<dependency>
        		<groupId>org.springframework</groupId>
        		<artifactId>spring-core</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-beans</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>${spring.version}</version>
			</dependency>
			<dependency>
				<groupId>org.springframework</groupId>
				<artifactId>spring-aspects</artifactId>
				<version>${spring.version}</version>
			</dependency>
			<dependency>
				<groupId>org.springframework</groupId>
				<artifactId>spring-jms</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>${spring.version}</version>
			</dependency>
			<dependency>
        		<groupId>org.springframework</groupId>
        		<artifactId>spring-tx</artifactId>    
        		<version>${spring.version}</version> 
    		</dependency>
    		<dependency>
        		<groupId>org.springframework</groupId>
        		<artifactId>spring-web</artifactId>
        		<version>${spring.version}</version> 
    		</dependency>
				
		  	<!-- Mybatis -->
			<dependency>
				<groupId>org.mybatis</groupId>
				<artifactId>mybatis</artifactId>
				<version>${mybatis.version}</version>
			</dependency>
			<dependency>
				<groupId>org.mybatis</groupId>
				<artifactId>mybatis-spring</artifactId>
				<version>${mybatis.spring.version}</version>
			</dependency>
			<dependency>
				<groupId>com.github.miemiedev</groupId>
				<artifactId>mybatis-paginator</artifactId>
				<version>${mybatis.paginator.version}</version>
			</dependency>		
			<!-- MySql -->
			<dependency>
				<groupId>mysql</groupId>
				<artifactId>mysql-connector-java</artifactId>
				<version>${mysql.version}</version>
			</dependency>
			<!-- 连接池 -->
			<dependency>
				<groupId>com.alibaba</groupId>
				<artifactId>druid</artifactId>
				<version>${druid.version}</version>
			</dependency>		
			<dependency>
			    <groupId>org.csource.fastdfs</groupId>
			    <artifactId>fastdfs</artifactId>
			    <version>1.2</version>
			</dependency>
	</dependencies>
	</dependencyManagement>
	
	<build>
		<plugins>			
			<!-- java编译插件 -->
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-compiler-plugin</artifactId>
				<version>3.2</version>
				<configuration>
					<source>1.8</source>
					<target>1.8</target>
					<encoding>UTF-8</encoding>
				</configuration>
			</plugin>
		</plugins>
	</build>
</project>

Dao

在demo-dao下面的src/main/java和src/main/resoures下创建com.demo.mapper包。

编辑demo-dao的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/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <parent>
    <groupId>com.demo</groupId>
    <artifactId>demo-parent</artifactId>
    <version>0.0.1-SNAPSHOT</version>
  </parent>
  <artifactId>demo-dao</artifactId>
  
   <dependencies>
  	<dependency>
	    <groupId>com.github.pagehelper</groupId>
	    <artifactId>pagehelper</artifactId>
	    <version>4.0.0</version>
	</dependency>	
  	 <!-- Mybatis -->
	<dependency>
		<groupId>org.mybatis</groupId>
		<artifactId>mybatis</artifactId>			
	</dependency>
		<dependency>
		<groupId>org.mybatis</groupId>
		<artifactId>mybatis-spring</artifactId>					
	</dependency>
	<dependency>
		<groupId>com.github.miemiedev</groupId>
		<artifactId>mybatis-paginator</artifactId>			
	</dependency>		
	<!-- MySql -->
	<dependency>
	    <groupId>mysql</groupId>
	    <artifactId>mysql-connector-java</artifactId>	   
	</dependency>
	<!-- 连接池 -->
	<dependency>
		<groupId>com.alibaba</groupId>
		<artifactId>druid</artifactId>		
	</dependency>		
	<!-- Spring依赖 -->
    <!-- 1.Spring核心依赖 -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-core</artifactId>       
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-beans</artifactId>      
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>       
    </dependency>
	<!-- 2.Spring dao依赖 -->
	<!-- spring-jdbc包括了一些如jdbcTemplate的工具类 -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-jdbc</artifactId>        
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-tx</artifactId>     
    </dependency>
    <!-- 3.Spring web依赖 -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
    </dependency>
    <!-- 4.Spring test依赖：方便做单元测试和集成测试 -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-test</artifactId>
    </dependency>
    <!-- junit -->
    <dependency>
	    <groupId>junit</groupId>
	    <artifactId>junit</artifactId>
	    <scope>test</scope>
	</dependency>
	<!-- 依赖deme-pojo -->
	<dependency>
		<groupId>com.demo</groupId>
		<artifactId>demo-pojo</artifactId>
		<version>0.0.1-SNAPSHOT</version>
	</dependency>
  </dependencies>
</project>

dao需要使用到pojo所以要依赖pojo.

在数据库中创建一个名为demo的数据库，并创建一张tb_user表

CREATE TABLE `tb_user` (
  `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
  `name` varchar(255) DEFAULT NULL,
  `password` varchar(255) DEFAULT NULL,
  `createtime` datetime DEFAULT NULL,
  `verification` char(1) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT '0' COMMENT '0代表未验证，1代表已验证。',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=11 DEFAULT CHARSET=utf8;

接下来创建pojo类，在demo-pojo下创建一个com.demo.pojo包，并根据表结构创建User类。

package com.demo.pojo;

import java.util.Date;

/**
 * @author 依风
 *	
 */
public class User {
	//id主键自增，故无set方法，且不传入构造器。
	private Integer id;
	//用户名及密码
	private String userName;
	private String password;
	//创建时间
	private Date createTime;
	//是否验证，未验证为"0"，验证为"1"
	private String verification;
	
	public User() {
		super();
		// TODO Auto-generated constructor stub
	}

	public User(String userName, String password, Date createTime, String verification) {
		super();
		this.userName = userName;
		this.password = password;
		this.createTime = createTime;
		this.verification = verification;
	}

	public Integer getId() {
		return id;
	}

	public String getUserName() {
		return userName;
	}

	public void setUserName(String userName) {
		this.userName = userName;
	}

	public String getPassword() {
		return password;
	}

	public void setPassword(String password) {
		this.password = password;
	}

	public Date getCreateTime() {
		return createTime;
	}

	public void setCreateTime(Date createTime) {
		this.createTime = createTime;
	}

	public String getVerification() {
		return verification;
	}

	public void setVerification(String verification) {
		this.verification = verification;
	}
}

接下来我们在demo-dao中编辑接口与文件和对应的xml文件。

结构如下图所示：

TbUserMapper.java

package com.demo.mapper;

import com.demo.pojo.User;

/**
 * @author 依风
 * tb_user表的dao操作
 */
public interface TbUserMapper {
	
	/** 向tb_user表中插入一条记录
	 * @param user 插入记录
	 * @return 受影响的行数
	 */
	int insertUser(User user);
}

TbUserMapper.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">

<!-- 注意此处是包名+接口名，xml文件名和接口文件名要一致 -->    
<mapper namespace = "com.demo.mapper.TbUserMapper" >
    <!-- 根据ID查询客户信息 -->
    <!-- id要和接口文件中的方法名一致 -->
    <insert id = "insertUser" parameterType = "com.demo.pojo.User" >
        INSERT INTO tb_user(name,password,createtime,verification) 
        VALUES (#{userName}, #{password}, #{createTime},#{verification}) 
        <!-- 注意参数名要和类中参数名保持一致，否则可能无法获取参数-->
    </insert>
</mapper>

接下来我们要在demo-dao中创建几个文件夹，并创建对应文件：

db.properties存放数据库的驱动信息，连接地址，用户名密码等。

jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/demo?characterEncoding=utf-8
jdbc.username=xxxx
jdbc.password=xxxx

此处注意jdbc.driver=com.mysql.cj.jdbc.Driver，不同版本的写法不一致，较老版本没有cj。

用户名和密码填写自己的密码就可以了。

paalicationContext-dao.xml配置srping与数据库的相关信息。

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
	xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
	http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
	http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd 
	http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd
	http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd">

	<!-- 数据库连接池 -->
	<!-- 加载配置文件 -->
	<context:property-placeholder location="classpath*:properties/*.properties" />
	<!-- 数据库连接池 -->
	<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"
		destroy-method="close">
		<property name="url" value="${jdbc.url}" />
		<property name="username" value="${jdbc.username}" />
		<property name="password" value="${jdbc.password}" />
		<property name="driverClassName" value="${jdbc.driver}" />
		<property name="maxActive" value="10" />
		<property name="minIdle" value="5" />
	</bean>
	
	<!-- 让spring管理sqlsessionfactory 使用mybatis和spring整合包中的 -->
	<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
		<!-- 数据库连接池 --> 
		<property name="dataSource" ref="dataSource" />
		<!-- 加载mybatis的全局配置文件 -->
		<property name="configLocation" value="classpath:mybatis/SqlMapConfig.xml" />
	</bean>
	<!-- 基于MapperScannerConfigurer，会自动扫描指定包下的接口文件和映射文件 -->
	<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
		<property name="basePackage" value="com.demo.mapper" />
	</bean>
</beans>

SqlMapConfig.xml配置了一个分页工具。

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
	<plugins>
		<!-- com.github.pagehelper 为 PageHelper 类所在包名 -->
		<plugin interceptor="com.github.pagehelper.PageHelper">
			<!-- 设置数据库类型 Oracle,Mysql,MariaDB,SQLite,Hsqldb,PostgreSQL 六种数据库-->
			<property name="dialect" value="mysql"/>
		</plugin>
	</plugins>
</configuration>

接下来我们测试下dao有没有问题

在demo-dao中的src/test/java下创建一个com.demo.dao.test.并创建一个类DaoTest.java

DaoTest.java

package com.demo.dao.test;

import java.util.Date;

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.demo.mapper.TbUserMapper;
import com.demo.pojo.User;

@RunWith(SpringJUnit4ClassRunner.class)
//加载classpath路径下（即src/main/resource目录下)
//srping文件夹中所有已application开头的文件，*代表任意字符。
@ContextConfiguration(locations="classpath:spring/application*.xml")
public class DaoTest {
	
	@Autowired
	private TbUserMapper tbUserMapper;
	
	@Test
	public void insertUserTest() {
		tbUserMapper.insertUser(new User("hcf","123",new Date(),"0"));
	}
	
}

@ContextConfiguration(locations="classpath:spring/application*.xml")加载指定的xml文件，xml文件中主要有

配置数据源，将接口文件和映射文件匹配起来。由于该模块打包方法为jar，所以测试是需要加载xml文件。

如果是war，则在tomcat中启动，并在web.xml中配置加载指定文件即可（tomcat会自动加载web.xml）。

然后将鼠标点击insertUserTest方法名，鼠标右键选择Run as->JUnit Test即可。

不出意外应该运行成功的，如果不成功根据错误信息找下bug。

运行成功后数据库中就会出现一条记录。

Service

Dao没有问题后，我们来构建Service.

首先编辑demo-service中的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/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <parent>
    <groupId>com.demo</groupId>
    <artifactId>demo-parent</artifactId>
    <version>0.0.1-SNAPSHOT</version>
  </parent>
  <artifactId>demo-service</artifactId>
  
  <dependencies>
  	<!-- Spring依赖 -->
    <!-- 1.Spring核心依赖 -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-core</artifactId>       
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-beans</artifactId>        
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>       
    </dependency>
	<!-- 2.Spring dao依赖 -->
	<!-- spring-jdbc包括了一些如jdbcTemplate的工具类 -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-jdbc</artifactId>       
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-tx</artifactId>        
    </dependency>
    <!-- 3.Spring web依赖 -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-web</artifactId>       
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>      
    </dependency>
    <!-- 4.Spring test依赖：方便做单元测试和集成测试 -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-test</artifactId>       
    </dependency>
    <!-- junit -->
    <dependency>
		<groupId>junit</groupId>
		<artifactId>junit</artifactId>
	</dependency>
    <!-- dao  -->
  	<dependency>
  		<groupId>com.demo</groupId>
  		<artifactId>demo-dao</artifactId>
  		<version>0.0.1-SNAPSHOT</version>
  	</dependency>
  </dependencies>
</project>

上面主要就是Spring相关依赖，注意一点Service需要引用Dao，所以需要依赖Dao。

接下来我们在demo-service下创建一个com.demo.service包，并编写UserService类。

UserService.java

package com.demo.service;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.demo.mapper.TbUserMapper;
import com.demo.pojo.User;

@Service
public class UserService {
	
	@Autowired
	private TbUserMapper tbUserMapper;
	
    //插入一条数据
	public void insert(User user) {
		tbUserMapper.insertUser(user);
	}
}

接下来我们需要在src/main/resources目录下创建一个spring文件夹。

在里面需要有两个文件。

一个是applicationContext-dao.xml,一个是applicationContext.xml

applicationContext-dao.xml与demo-dao中的applicationContext-dao.xml相同，直接复制即可。

我们来看下applicationContext.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:dubbo="http://code.alibabatech.com/schema/dubbo" xmlns:mvc="http://www.springframework.org/schema/mvc"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
        http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">

    <context:component-scan base-package="com.demo.*"></context:component-scan>
</beans>

可以看大家里面只有一个包扫描配置，扫描所有以com.demo开头的包，*代表任意。

配置这个主要是位置扫描指定包中的注解，例如扫描UserServcie.java中的@Autowired,@Service注解。

接下来测试下Service

在src/test/java中创建一个com.demo.service.test包，然后创建UserServiceTest.java类。

package com.demo.service.test;

import java.util.Date;

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.demo.pojo.User;
import com.demo.service.UserService;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations="classpath:spring/application*.xml")
public class UserServiceTest {
	
	@Autowired
	private UserService userService;
	
	@Test
	public void insertUser() {
		userService.insert(new User("hcf","321",new Date(),"0"));
	}
}

注意看locations="classpath:spring/application*.xml"，Service调用Dao，所以Dao也需要加载，加载完的Dao

被Service中的@Autowired注入到Servcie中，Service再调用Dao。Dao并不会自己自动加载，需要外部指定加载。

然后将鼠标放在方法名上，右击Run as->JUnit Test.

然后运行成功，数据库中又会多一条记录。

Controller

Dao和Servcie完成后就剩下最后的Conttroller了。Controller需要引用Servcie，而Servcie会引用Dao，Controller也会间接引用Dao。

首先来看demo-web中的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/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <parent>
    <groupId>com.demo</groupId>
    <artifactId>demo-parent</artifactId>
    <version>0.0.1-SNAPSHOT</version>
  </parent>
  <artifactId>controller</artifactId>
  <packaging>war</packaging>
  
  <dependencies>
  	<!-- Spring依赖 -->
    <!-- 1.Spring核心依赖 -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-core</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-beans</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
    </dependency>
	<!-- 2.Spring dao依赖 -->
	<!-- spring-jdbc包括了一些如jdbcTemplate的工具类 -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-jdbc</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-tx</artifactId>
    </dependency>
    <!-- 3.Spring web依赖 -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
    </dependency>
    <!-- 4.Spring test依赖：方便做单元测试和集成测试 -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-test</artifactId>
    </dependency>
    
    <dependency>
		<groupId>org.springframework</groupId>
		<artifactId>spring-context</artifactId>
	</dependency>
	<dependency>
		<groupId>org.springframework</groupId>
		<artifactId>spring-beans</artifactId>
	</dependency>
	<dependency>
		<groupId>org.springframework</groupId>
		<artifactId>spring-webmvc</artifactId>
	</dependency>
	<dependency>
		<groupId>org.springframework</groupId>
		<artifactId>spring-jdbc</artifactId>
	</dependency>
	<dependency>
		<groupId>org.springframework</groupId>
		<artifactId>spring-aspects</artifactId>
	</dependency>
	
	<dependency>
		<groupId>org.springframework</groupId>
		<artifactId>spring-context-support</artifactId>
	</dependency>
	<dependency>
		<groupId>org.springframework</groupId>
		<artifactId>spring-test</artifactId>
	</dependency>
		
	<dependency>
		<groupId>junit</groupId>
		<artifactId>junit</artifactId>
	</dependency>
	<dependency>
		<groupId>com.alibaba</groupId>
		<artifactId>fastjson</artifactId>
		<version>1.2.28</version>
	</dependency>
	<dependency>
		<groupId>javassist</groupId>
		<artifactId>javassist</artifactId>
		<version>3.11.0.GA</version>
	</dependency>
	<dependency>
	    <groupId>commons-codec</groupId>
	    <artifactId>commons-codec</artifactId>
	    <version>1.10</version>
	</dependency>
	<dependency>
		<groupId>javax.servlet</groupId>
		<artifactId>servlet-api</artifactId>
		<version>2.5</version>		
		<scope>provided</scope>
	</dependency>

	<dependency>
		<groupId>com.demo</groupId>
		<artifactId>demo-service</artifactId>
		<version>0.0.1-SNAPSHOT</version>
	</dependency>
  </dependencies>
  
  <build>  
	  <plugins>
	      <plugin>
				<groupId>org.apache.tomcat.maven</groupId>
				<artifactId>tomcat7-maven-plugin</artifactId>
				<version>2.2</version>
				<configuration>
					<!-- 指定端口 -->
					<port>8080</port>
					<!-- 请求路径 -->
					<path>/</path>
				</configuration>
	  	  </plugin>
	  </plugins>  
    </build>
</project>

pom.xml中最后配置一个tomcat插件，后续运行这个插件即可，就相当于将web程序运行在tomcat中了。

在src/main/java下创建一个com.demo.controller的包，然后创建UserController类。

UserController

package com.demo.controller;

import java.util.Date;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import com.demo.pojo.User;
import com.demo.service.UserService;

/** 用户注册，登录控制类
 * @author 依风
 *
 */
//Controller+ReponseBody = RestController
@RestController
public class UserController {
	@Autowired
	private UserService userServcie;
	
	@RequestMapping("/insertUser")
	public String insertUser() {
		userServcie.insert(new User("controller","321",new Date(),"0"));
		return "insert success";
	}
}

然后我们在src/main/resources下创建两个文件夹，srping和config

config下的application.properties是一个空文件夹，有就可以暂时不需要，只是先将基本的架子搭好。

spring文件夹下的applicationContext-dao.xml和applicationContext.xml和demo-servcie中的一样，直接复制即可。

我们看下applicationContext-mvc.xml中的内容。

<?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:dubbo="http://code.alibabatech.com/schema/dubbo" xmlns:mvc="http://www.springframework.org/schema/mvc"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
   
    <!-- 扫描包下注解 -->
    <context:component-scan base-package="com.demo.*"></context:component-scan>
    <!-- 加载配置文件-->
    <context:property-placeholder location="classpath:config/application.properties" />
	
    <!--fastjson-->
	<mvc:annotation-driven>
	  <mvc:message-converters register-defaults="true">
	    <bean class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter">  
	      <property name="supportedMediaTypes" value="application/json"/>
	      <property name="features">
	        <array>
	          <value>WriteMapNullValue</value>
	          <value>WriteDateUseDateFormat</value>
	        </array>
	      </property>
	    </bean>
	  </mvc:message-converters>
	</mvc:annotation-driven>
</beans>

这里面主要配置了fastjson，它将controller类返回的数据转换为json字符串。

我们来看下demo-web中WEB-INF目录下的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_2_5.xsd" version="2.5">
  <welcome-file-list>
    <welcome-file></welcome-file>
  </welcome-file-list>
  
  <!-- 过滤器统一编码 -->
  <filter>
    <filter-name>CharacterEncodingFilter</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>CharacterEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
  
  <!-- 配置springmvc -->
  <servlet>
    <servlet-name>springmvc</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <!-- 加载src/main/resources下srping文件夹中所有application开头的xml文件 -->
      <param-value>classpath:spring/application*.xml</param-value>
    </init-param>
  </servlet>
  <!-- 拦截所有.do结尾的请求 -->
  <servlet-mapping>
    <servlet-name>springmvc</servlet-name>
    <url-pattern>*.do</url-pattern>
  </servlet-mapping>
</web-app>

当tomcat启动时会加载web.xml，而在web.xml中配置了Spring MVC拦截请求进行处理交由前端控制器（DispatcherServlet）处理，同时会加载指定的配置文件。

鼠标右击demo-web，Run as -> Maven build。

然后弹出如下页面，并在Goals栏输入tomcat7:run

这样就调用了demo-web下pom.xml中配置的tomca插件，此时demo-web就运行在tomcat中了。

然后我们来测试下，在地址栏输入http://localhost:8080/insertUser.do

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原文地址：https://www.cnblogs.com/huang-changfan/p/11517302.html