Maven + SSM
之前Maven+SSM都是照着搭建的，自己想寫點什么的時候發現搭建的過程不清楚。
於是花了時間邊整理思路邊搭建，並把搭建過程記錄下來。
視頻看來終覺淺，還是需要自己動手實踐，捋順思路記憶才會深刻。
構建Maven相關工程和模塊
- 首先創建一個父工程，選擇Maven Project選項。
- 勾選上Create a simple project,然后點擊next
- 注意父工程打包方式為pom
- 點擊finish，父工程創建完成。
-
將鼠標移動到之前創建好的demo-parent,點擊鼠標右鍵，選擇Maven->New Maven Module Project.
(也可直接創建Maven Module然后指定parent。)
- 模塊名為demo-dao,Parent Project為demo-parent.
- 注意打包方式為jar，點擊finish即可，demo-dao模塊就創建完成了。
- 按照相同的方法創建Service模塊，注意打包方式也為jar。
- 接下來創建demo-web
- 此處注意打包方式為war
-
創建完demo-web后會發現，報錯這時因為打包為war，因為標准的web程序結構，
而我們目錄結構的webapp下缺少WEB-INF文件夾和web.xml文件。
- 接下來我們創建一個WEB-INF文件夾，然后在其中創建一個空的web.xml文件。
web.xml內容如下所示：
<?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>
- 接下來創建demo-pojo,存放所有pojo. (也要選擇create a simple project)
- 打包方式同樣為jar
依賴項
- 首先編輯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>
<!-- 集中定義依賴版本號 -->
<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>${mysql.version}</version>
</dependency>
<!-- 連接池 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>${druid.version}</version>
</dependency>
<dependency>
<groupId>org.csource.fastdfs</groupId>
<artifactId>fastdfs</artifactId>
<version>1.2</version>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<!-- java編譯插件 -->
<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下創建com.demo.mapper包。
- 編輯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>
<!-- 連接池 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
</dependency>
<!-- Spring依賴 -->
<!-- 1.Spring核心依賴 -->
<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依賴 -->
<!-- spring-jdbc包括了一些如jdbcTemplate的工具類 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
</dependency>
<!-- 3.Spring web依賴 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
</dependency>
<!-- 4.Spring test依賴：方便做單元測試和集成測試 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
</dependency>
<!-- junit -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<scope>test</scope>
</dependency>
<!-- 依賴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所以要依賴pojo.
- 在數據庫中創建一個名為demo的數據庫，並創建一張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代表未驗證，1代表已驗證。',
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=11 DEFAULT CHARSET=utf8;
- 接下來創建pojo類，在demo-pojo下創建一個com.demo.pojo包，並根據表結構創建User類。
package com.demo.pojo;
import java.util.Date;
/**
* @author 依風
*
*/
public class User {
//id主鍵自增，故無set方法，且不傳入構造器。
private Integer id;
//用戶名及密碼
private String userName;
private String password;
//創建時間
private Date createTime;
//是否驗證，未驗證為"0"，驗證為"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;
}
}
-
接下來我們在demo-dao中編輯接口與文件和對應的xml文件。
結構如下圖所示：
TbUserMapper.java
package com.demo.mapper;
import com.demo.pojo.User;
/**
* @author 依風
* tb_user表的dao操作
*/
public interface TbUserMapper {
/** 向tb_user表中插入一條記錄
* @param user 插入記錄
* @return 受影響的行數
*/
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">
<!-- 注意此處是包名+接口名，xml文件名和接口文件名要一致 -->
<mapper namespace = "com.demo.mapper.TbUserMapper" >
<!-- 根據ID查詢客戶信息 -->
<!-- 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})
<!-- 注意參數名要和類中參數名保持一致，否則可能無法獲取參數-->
</insert>
</mapper>
- 接下來我們要在demo-dao中創建幾個文件夾，並創建對應文件：
db.properties存放數據庫的驅動信息，連接地址，用戶名密碼等。
jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc\:mysql\://localhost\:3306/demo?characterEncoding=utf-8
jdbc.username=xxxx
jdbc.password=xxxx
此處注意jdbc.driver=com.mysql.cj.jdbc.Driver，不同版本的寫法不一致，較老版本沒有cj。
用戶名和密碼填寫自己的密碼就可以了。
paalicationContext-dao.xml配置srping與數據庫的相關信息。
<?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">
<!-- 數據庫連接池 -->
<!-- 加載配置文件 -->
<context:property-placeholder location="classpath*:properties/*.properties" />
<!-- 數據庫連接池 -->
<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>
<!-- 讓spring管理sqlsessionfactory 使用mybatis和spring整合包中的 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 數據庫連接池 -->
<property name="dataSource" ref="dataSource" />
<!-- 加載mybatis的全局配置文件 -->
<property name="configLocation" value="classpath:mybatis/SqlMapConfig.xml" />
</bean>
<!-- 基於MapperScannerConfigurer，會自動掃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配置了一個分頁工具。
<?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 為 PageHelper 類所在包名 -->
<plugin interceptor="com.github.pagehelper.PageHelper">
<!-- 設置數據庫類型 Oracle,Mysql,MariaDB,SQLite,Hsqldb,PostgreSQL 六種數據庫-->
<property name="dialect" value="mysql"/>
</plugin>
</plugins>
</configuration>
-
接下來我們測試下dao有沒有問題
在demo-dao中的src/test/java下創建一個com.demo.dao.test.並創建一個類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)
//加載classpath路徑下（即src/main/resource目錄下)
//srping文件夾中所有已application開頭的文件，*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")加載指定的xml文件，xml文件中主要有
配置數據源，將接口文件和映射文件匹配起來。由於該模塊打包方法為jar，所以測試是需要加載xml文件。
如果是war，則在tomcat中啟動，並在web.xml中配置加載指定文件即可（tomcat會自動加載web.xml）。
然后將鼠標點擊insertUserTest方法名，鼠標右鍵選擇Run as->JUnit Test即可。
不出意外應該運行成功的，如果不成功根據錯誤信息找下bug。
運行成功后數據庫中就會出現一條記錄。
Service
Dao沒有問題后，我們來構建Service.
首先編輯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依賴 -->
<!-- 1.Spring核心依賴 -->
<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依賴 -->
<!-- spring-jdbc包括了一些如jdbcTemplate的工具類 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
</dependency>
<!-- 3.Spring web依賴 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
</dependency>
<!-- 4.Spring test依賴：方便做單元測試和集成測試 -->
<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相關依賴，注意一點Service需要引用Dao，所以需要依賴Dao。
- 接下來我們在demo-service下創建一個com.demo.service包，並編寫UserService類。
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;
//插入一條數據
public void insert(User user) {
tbUserMapper.insertUser(user);
}
}
-
接下來我們需要在src/main/resources目錄下創建一個spring文件夾。
在里面需要有兩個文件。
一個是applicationContext-dao.xml,一個是applicationContext.xml
applicationContext-dao.xml與demo-dao中的applicationContext-dao.xml相同，直接復制即可。
我們來看下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個包掃描配置，掃描所有以com.demo開頭的包，*代表任意。
配置這個主要是位置掃描指定包中的注解，例如掃描UserServcie.java中的@Autowired,@Service注解。
- 接下來測試下Service
在src/test/java中創建一個com.demo.service.test包，然后創建UserServiceTest.java類。
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調用Dao，所以Dao也需要加載，加載完的Dao
被Service中的@Autowired注入到Servcie中，Service再調用Dao。Dao並不會自己自動加載，需要外部指定加載。
然后將鼠標放在方法名上，右擊Run as->JUnit Test.
然后運行成功，數據庫中又會多一條記錄。
Controller
Dao和Servcie完成后就剩下最后的Conttroller了。Controller需要引用Servcie，而Servcie會引用Dao，Controller也會間接引用Dao。
首先來看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依賴 -->
<!-- 1.Spring核心依賴 -->
<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依賴 -->
<!-- spring-jdbc包括了一些如jdbcTemplate的工具類 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
</dependency>
<!-- 3.Spring web依賴 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
</dependency>
<!-- 4.Spring test依賴：方便做單元測試和集成測試 -->
<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>
<!-- 請求路徑 -->
<path>/</path>
</configuration>
</plugin>
</plugins>
</build>
</project>
pom.xml中最后配置一個tomcat插件，后續運行這個插件即可，就相當於將web程序運行在tomcat中了。
- 在src/main/java下創建一個com.demo.controller的包，然后創建UserController類。
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;
/** 用戶注冊，登錄控制類
* @author 依風
*
*/
//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";
}
}
然后我們在src/main/resources下創建兩個文件夾，srping和config
config下的application.properties是一個空文件夾，有就可以暫時不需要，只是先將基本的架子搭好。
spring文件夾下的applicationContext-dao.xml和applicationContext.xml和demo-servcie中的一樣，直接復制即可。
我們看下applicationContext-mvc.xml中的內容。
<?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">
<!-- 掃描包下注解 -->
<context:component-scan base-package="com.demo.*"></context:component-scan>
<!-- 加載配置文件-->
<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>
這里面主要配置了fastjson，它將controller類返回的數據轉換為json字符串。
我們來看下demo-web中WEB-INF目錄下的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>
<!-- 過濾器統一編碼 -->
<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>
<!-- 加載src/main/resources下srping文件夾中所有application開頭的xml文件 -->
<param-value>classpath:spring/application*.xml</param-value>
</init-param>
</servlet>
<!-- 攔截所有.do結尾的請求 -->
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
</web-app>
當tomcat啟動時會加載web.xml，而在web.xml中配置了Spring MVC攔截請求進行處理交由前端控制器（DispatcherServlet）處理，同時會加載指定的配置文件。
鼠標右擊demo-web，Run as -> Maven build。
然后彈出如下頁面，並在Goals欄輸入tomcat7:run
這樣就調用了demo-web下pom.xml中配置的tomca插件，此時demo-web就運行在tomcat中了。
然后我們來測試下，在地址欄輸入http://localhost:8080/insertUser.do
