SSM框架詳細整合教程（Spring+SpringMVC+MyBatis）

動機

使用maven已經有一段時間了，但項目是別人搭建好的，因此一直想着自己要學習搭建一下。網上找了些資料後，結合自己實驗，花了點時間就搞好，老樣子，寫在博客上，免得日後忘記。

本文鏈接：http://blog.csdn.net/v123411739/article/details/50742885

博文中的MyEclipse鏈接：https://pan.baidu.com/s/1pMhiygz 密碼：mqmc

博文中的完整項目代碼：關注微信公衆號發送“SSM”即可獲得。

注：文末有直接導入項目的方法。

1.安裝maven和配置（此步驟並非必須，可以根據情況選擇）

1. 進入官網下載中心http://maven.apache.org/download.cgi，下載apache-maven-3.5.2-bin.zip，**-src.zip爲Maven的源碼
2. 配置環境變量，打開系統環境變量新建一個M2_HOME將解壓後的Maven存放路徑放在此，然後在path路徑加入%M2_HOME%\bin路徑
3. 檢測是否配置成功，打開命令行輸入echo %M2_HOME%查看M2_HOME指向的Maven存放安裝目錄是否正確，輸入mvn -v查看是否能找到正確的mvn執行腳本
4. 以後升級的話將M2_HOME的路徑換爲最新的安裝目錄就行
5. Maven實踐：初次安裝完後輸入mvn help:system的命令，此時會打印出所有的Java系統屬性和環境變量，然後Maven會執行一個真正的任務將相應的所需的構件下載到本地倉庫中包括pom和jar文件，然後用戶在C:\Users\Administrator\.m2下就能看到本地倉庫了
6. 用戶需要複製M2_HOME/conf/setting.xml文件到C:/Users/Administrator/.m2/setting.xml，這樣用戶每次升級後就不要在次修改setting.xml文件了

2.MyEclipse配置Maven

1. 在本地創建一個文件夾MavenRepository，並在MavenRepository文件夾下創建文件夾repository。
2. 進入Maven解壓後的文件夾，進入conf文件夾，將settings.xml文件複製到上一步創建的MavenRepository文件夾下
3. 打開MavenRepository文件夾下的settings.xml文件，找到localRepository標籤，此時是被註釋掉的，我們解除註釋，然後配置步驟1中的repository路徑，如<localRepository>F:\m2\repository</localRepository>
4. 在MyEclipse中的Perferences進行如下配置，添加自己的Maven
5. User Settings設置爲之前修改過的setting.xml
6. File->New->others，搜索maven，如果看到有Maven Project則代表配置成功。

3.MyEclipse使用maven創建web項目

1、創建一個maven項目

2、按照上面教程，即可創建出一個Maven項目，項目結構如下圖

3、將JRE版本設置爲1.7，可使用默認的或者自己導入

4、此時index.jsp會報以下錯誤

在pom.xml文件的dependencies節點下添加如下代碼即可，添加完後，會下載對應的jar包

5、右鍵項目，選擇Properties，進行如下配置

4.搭建Spring+SpringMVC+Mybatis框架

1、Maven引入項目用到的jar包，修改pom.xml後保存會自動下載，存放在之前配置的本地倉庫中，即：F:\m2\repository文件夾

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>com.chillax</groupId>
	<artifactId>Maven_Project</artifactId>
	<packaging>war</packaging>
	<version>0.0.1-SNAPSHOT</version>
	<name>Maven_Project Maven Webapp</name>
	<url>http://maven.apache.org</url>

	<!-- 用來設置版本號 -->
	<properties>
		<srping.version>4.0.2.RELEASE</srping.version>
		<mybatis.version>3.2.8</mybatis.version>
		<slf4j.version>1.7.12</slf4j.version>
		<log4j.version>1.2.17</log4j.version>
	</properties>
	<!-- 用到的jar包 -->
	<dependencies>
		<!-- 單元測試 -->
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>4.11</version>
			<!-- 表示開發的時候引入，發佈的時候不會加載此包 -->
			<scope>test</scope>
		</dependency>
		<!-- java ee包 -->
		<dependency>
			<groupId>javax</groupId>
			<artifactId>javaee-api</artifactId>
			<version>7.0</version>
		</dependency>
		<!-- spring框架包 start -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-test</artifactId>
			<version>${srping.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-core</artifactId>
			<version>${srping.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-oxm</artifactId>
			<version>${srping.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-tx</artifactId>
			<version>${srping.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-jdbc</artifactId>
			<version>${srping.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-aop</artifactId>
			<version>${srping.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context</artifactId>
			<version>${srping.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context-support</artifactId>
			<version>${srping.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-expression</artifactId>
			<version>${srping.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-orm</artifactId>
			<version>${srping.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-web</artifactId>
			<version>${srping.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-webmvc</artifactId>
			<version>${srping.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-aspects</artifactId>
			<version>${srping.version}</version>
		</dependency>
		<!-- spring框架包 end -->
		<!-- mybatis框架包 start -->
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis</artifactId>
			<version>${mybatis.version}</version>
		</dependency>
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis-spring</artifactId>
			<version>1.2.2</version>
		</dependency>
		<!-- mybatis框架包 end -->
		<!-- 數據庫驅動 -->
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<version>5.1.35</version>
		</dependency>
		<!-- 導入dbcp的jar包，用來在applicationContext.xml中配置數據庫 -->
		<dependency>
			<groupId>commons-dbcp</groupId>
			<artifactId>commons-dbcp</artifactId>
			<version>1.4</version>
		</dependency>
		<!-- jstl標籤類 -->
		<dependency>
			<groupId>jstl</groupId>
			<artifactId>jstl</artifactId>
			<version>1.2</version>
		</dependency>
		<dependency>
			<groupId>taglibs</groupId>
			<artifactId>standard</artifactId>
			<version>1.1.2</version>
		</dependency>
		<!-- log start -->
		<dependency>
			<groupId>log4j</groupId>
			<artifactId>log4j</artifactId>
			<version>${log4j.version}</version>
		</dependency>
		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>slf4j-api</artifactId>
			<version>${slf4j.version}</version>
		</dependency>
		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>slf4j-log4j12</artifactId>
			<version>${slf4j.version}</version>
		</dependency>
		<!-- log END -->
		<!-- Json -->
		<!-- 格式化對象，方便輸出日誌 -->
		<dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>fastjson</artifactId>
			<version>1.2.6</version>
		</dependency>
		<dependency>
			<groupId>org.codehaus.jackson</groupId>
			<artifactId>jackson-mapper-asl</artifactId>
			<version>1.9.13</version>
		</dependency>
		<!-- 上傳組件包 start -->
		<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>1.10</version>
		</dependency>
		<!-- 上傳組件包 end -->

		<!-- AL相關添加 -->
		<dependency>
			<groupId>net.sourceforge.jexcelapi</groupId>
			<artifactId>jxl</artifactId>
			<version>2.6</version>
		</dependency>
		<dependency>
			<groupId>org.apache.poi</groupId>
			<artifactId>poi</artifactId>
			<version>3.8</version>
		</dependency>
		<dependency>
			<groupId>org.apache.poi</groupId>
			<artifactId>poi-ooxml</artifactId>
			<version>3.9</version>
		</dependency>
		<!-- AL相關添加 -->
	</dependencies>

	<build>
		<finalName>Maven_Project</finalName>
		<plugins>
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-compiler-plugin</artifactId>
				<version>2.3.2</version>
				<configuration>
					<source>1.7</source>
					<target>1.7</target>
				</configuration>
			</plugin>
		</plugins>
	</build>
</project>

2、在src/main/resources下添加如下配置文件

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: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">
                        
    <!-- 使用註解式注入 -->
	<context:annotation-config />
	
    <!-- 自動掃描 -->
	<context:component-scan base-package="com.chillax" />
	
    <!-- 導入DAO配置 -->
	<import resource="spring-dao.xml"/>
	
	<!-- 導入數據庫配置 -->
	<import resource="spring-db.xml"/>
	
	<!-- 導入數據庫配置 -->
	<import resource="spring-tx.xml"/>
	
</beans>

jdbc.properties，有多人反映直接複製時，第一行的driver最後面多了個空格，請注意

driver=com.mysql.jdbc.Driver
url=jdbc:mysql://127.0.0.1:3306/maventest
username=root
password=root
#定義初始連接數
initialSize=0
#定義最大連接數
maxActive=20
#定義最大空閒
maxIdle=20
#定義最小空閒
minIdle=1
#定義最長等待時間
maxWait=60000

log4j.properties

#定義LOG輸出級別
log4j.rootLogger=INFO,Console,File
#定義日誌輸出目的地爲控制檯
log4j.appender.Console=org.apache.log4j.ConsoleAppender
log4j.appender.Console.Target=System.out
#可以靈活地指定日誌輸出格式，下面一行是指定具體的格式
log4j.appender.Console.layout = org.apache.log4j.PatternLayout
log4j.appender.Console.layout.ConversionPattern=[%c] - %m%n

#文件大小到達指定尺寸的時候產生一個新的文件
log4j.appender.File = org.apache.log4j.RollingFileAppender
#指定輸出目錄
log4j.appender.File.File = logs/ssm.log
#定義文件最大大小
log4j.appender.File.MaxFileSize = 10MB
# 輸出所以日誌，如果換成DEBUG表示輸出DEBUG以上級別日誌
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

spring-dao.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">
                        
                        
	<!-- DAO接口所在包名，Spring會自動查找其下的類 -->
	<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
	 	<!--basePackage指定要掃描的包，在此包之下的映射器都會被搜索到。
		 可指定多個包，包與包之間用逗號或分號分隔-->
		<property name="basePackage" value="com.chillax.dao" />
		<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
	</bean>                       
                        
</beans>

spring-db.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">

	<!-- 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}" />
		<!-- 初始化連接大小 -->
		<property name="initialSize" value="${initialSize}"></property>
		<!-- 連接池最大數量 -->
		<property name="maxActive" value="${maxActive}"></property>
		<!-- 連接池最大空閒 -->
		<property name="maxIdle" value="${maxIdle}"></property>
		<!-- 連接池最小空閒 -->
		<property name="minIdle" value="${minIdle}"></property>
		<!-- 獲取連接最大等待時間 -->
		<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" />
		<!-- 自動掃描mapping.xml文件 -->
		<property name="mapperLocations" value="classpath:com/chillax/mapper/*.xml"></property>
	</bean>
	
</beans>

spring-tx.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:aop="http://www.springframework.org/schema/aop"
	xmlns:tx="http://www.springframework.org/schema/tx"
	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/aop 
           				http://www.springframework.org/schema/aop/spring-aop-3.1.xsd
           				http://www.springframework.org/schema/tx
     	  				http://www.springframework.org/schema/tx/spring-tx-3.1.xsd">

	<!-- (事務管理)transaction manager, use JtaTransactionManager for global tx -->
	<bean id="transactionManager"
		class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<property name="dataSource" ref="dataSource" />
	</bean>
	
	 <!--  配置參與事務的類 -->
	 <aop:config>
		 <aop:pointcut id="allServiceMethod" expression="execution(* com.chillax.service.*.*(..))"/>
		 <aop:advisor pointcut-ref="allServiceMethod" advice-ref="TxAdvice" />
	 </aop:config>
	
	<!-- 使用聲明方式配置事務 -->
	<tx:advice id="TxAdvice" transaction-manager="transactionManager">
	     <tx:attributes>
		       <tx:method name="*" propagation="REQUIRED" rollback-for="java.lang.Exception"/>
	     </tx:attributes>
 	</tx:advice>
 	
</beans>

3、在WEB-INF文件夾下添加/修改以下配置文件

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">

	 <!-- 添加註解驅動 -->  
    <mvc:annotation-driven />
    <mvc:default-servlet-handler/>
    
    <!-- 設置使用註解的類所在的包 -->
	<context:component-scan base-package="com.chillax.controller" />
	
	<!-- 定義跳轉的文件的前後綴 ，視圖模式配置-->
	<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<!-- 這裏的配置我的理解是自動給後面action的方法return的字符串加上前綴和後綴，變成一個 可用的url地址 -->
		<property name="prefix" value="/WEB-INF/jsp/" />
		<property name="suffix" value=".jsp" />
	</bean>
	
	<!-- SpringMVC上傳文件時，需要配置MultipartResolver處理器-->
	<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">  
        <!-- 默認編碼 -->
        <property name="defaultEncoding" value="utf-8" />  
        <!-- 文件大小最大值 -->
        <property name="maxUploadSize" value="10485760000" />  
        <!-- 內存中的最大值 -->
        <property name="maxInMemorySize" value="40960" />  
    </bean> 

</beans>

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>
	
	<welcome-file-list>
		<welcome-file>/index.jsp</welcome-file>
	</welcome-file-list>
	
	<!-- 加載spring bean -->
    <context-param>
         <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    
	<!-- 編碼過濾器 -->
	<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 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>/WEB-INF/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>
		<url-pattern>/</url-pattern>
	</servlet-mapping>
	
</web-app>

4、在src/main/java下添加如下包和類

UserController.java

package com.chillax.controller;

import java.util.List;

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 com.chillax.dto.User;
import com.chillax.service.IUserService;

@Controller
@RequestMapping("/user")
public class UserController {
	@Resource
	private IUserService userService;
	
	@RequestMapping("/userList")
	public String userList(HttpServletRequest request,Model model){
		List<User> uList = userService.getAllUser();
		model.addAttribute("uList", uList);
		return "userList";
	}
	
	@RequestMapping("/showUser")
	public String showUser(HttpServletRequest request,Model model){
		int userId = Integer.parseInt(request.getParameter("id"));
		User user = userService.getUserById(userId);
		model.addAttribute("user", user);
		return "showUser";
	}
	
	@RequestMapping("/addUserUI")
	public String addUserUI(){
		return "addUser";
	}
	
	@RequestMapping("/addUser")
	public String addUser(HttpServletRequest request,Model model){
		User user = new User();
		user.setName(String.valueOf(request.getParameter("name")));
		user.setPassword(String.valueOf(request.getParameter("password")));
		user.setAge(Integer.parseInt(String.valueOf(request.getParameter("age"))));
		userService.addUser(user);
		return "redirect:/user/userList";
	}
}

IUserDao.java

package com.chillax.dao;

import java.util.List;
import java.util.Map;

import com.chillax.dto.User;

public interface IUserDao {
	
	public User queryByPrimaryKey(Integer id);
	
	public List<User> getAllUser();
		
	public void insertUser(User user);
	
	public void insertUserByBatch(List<User> list);
	
	public void deleteByPrimaryKey(Integer id);
	
	public void delteUserByBatch(Map<String,Object> params);
	
	public void updateByPrimaryKey(User user);
	
}

User.java

package com.chillax.dto;

public class User {
    private Integer id;

    private String name;

    private String password;

    private Integer age;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password == null ? null : password.trim();
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }
}

UserMapper.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="com.chillax.dao.IUserDao" >  
    <resultMap id="BaseResultMap" type="com.chillax.dto.User">
		<result column="id" property="id" jdbcType="INTEGER" />
		<result column="name" property="name" jdbcType="VARCHAR" />
		<result column="password" property="password" jdbcType="VARCHAR" />
		<result column="age" property="age" jdbcType="INTEGER" />
	</resultMap>

	<sql id="Base_Column_List">
		id, name, password, age
	</sql>

	<!-- 查詢用戶-->
	<select id="queryByPrimaryKey" resultMap="BaseResultMap"
		parameterType="java.lang.Integer">
		select
		<include refid="Base_Column_List" />
		from user
		where id = #{id,jdbcType=INTEGER}
	</select>
	
	<!-- 查詢用戶-->
	<select id="getAllUser" resultMap="BaseResultMap">
		select
		<include refid="Base_Column_List" />
		from user
	</select>
	
	<!-- 插入用戶 -->
	<insert id="insertUser" parameterType="com.chillax.dto.User">
		insert into user  
		<trim prefix="(" suffix=")" suffixOverrides="," >  
		  <if test="id != null" >  
		    id,  
		  </if>  
		  <if test="name != null" >  
		    name,  
		  </if>  
		  <if test="password != null" >  
		    password,  
		  </if>  
		  <if test="age != null" >  
		    age,  
		  </if>  
		</trim>  
		<trim prefix="values (" suffix=")" suffixOverrides="," >  
		  <if test="id != null" >  
		    #{id,jdbcType=INTEGER},  
		  </if>  
		  <if test="name != null" >  
		    #{name,jdbcType=VARCHAR},  
		  </if>  
		  <if test="password != null" >  
		    #{password,jdbcType=VARCHAR},  
		  </if>  
		  <if test="age != null" >  
		    #{age,jdbcType=INTEGER},  
		  </if>  
		</trim>   
	</insert>
	
	<!-- 批量插入用戶 -->
	<insert id="insertUserByBatch" parameterType="java.util.List" >
    insert into USER
       (ID,
        NAME,
        PASSWORD,
        AGE)
    select A.* from
         (
         <foreach collection="list" item="user" index="index" separator="union">
             select 
             #{user.id,jdbcType=INTEGER},
             #{user.name,jdbcType=VARCHAR},
             #{user.password,jdbcType=VARCHAR},
             #{user.age,jdbcType=INTEGER}
              from dual
         </foreach>
         ) A
  	</insert>

	<!-- 刪除用戶 -->
	<delete id="deleteByPrimaryKey" parameterType="java.lang.Integer">
		delete from user
		where id = #{id,jdbcType=INTEGER}  
  	</delete>
  	
  	<!-- 批量刪除用戶 -->
	<delete id="deleteUserByBatch" parameterType="java.util.Map" >
	 delete from user
	 where id IN 
	     <foreach item="ids" collection="iList" open="(" separator="," close=")">
	         #{ids,jdbcType=DECIMAL}
	     </foreach>
	</delete>

	<!-- 更新用戶 -->
	<update id="updateByPrimaryKey" parameterType="com.chillax.dto.User" >  
	    update user  
		<set >  
		  <if test="name != null" >  
		    name = #{name,jdbcType=VARCHAR},  
		  </if>  
		  <if test="password != null" >  
		    password = #{password,jdbcType=VARCHAR},  
		  </if>  
		  <if test="age != null" >  
		    age = #{age,jdbcType=INTEGER},  
		  </if>  
		</set>  
		where id = #{id,jdbcType=INTEGER} 
  	</update>
  
</mapper>

IUserService.java

package com.chillax.service;

import java.util.List;

import com.chillax.dto.User;

public interface IUserService {
	
	public User getUserById(int userId);

	public void insertUser(User user);

	public void addUser(User user);

	public List<User> getAllUser();
}

UserServiceImpl.java

package com.chillax.service.Impl;

import java.util.List;

import javax.annotation.Resource;

import org.springframework.stereotype.Service;

import com.chillax.dao.IUserDao;
import com.chillax.dto.User;
import com.chillax.service.IUserService;

@Service("userService")
public class UserServiceImpl implements IUserService {
	@Resource
	private IUserDao userDao;
	
	public User getUserById(int userId) {
		return userDao.queryByPrimaryKey(userId);
	}

	public void insertUser(User user) {
		userDao.insertUser(user);
	}

	public void addUser(User user) {
		userDao.insertUser(user);
	}

	@Override
	public List<User> getAllUser() {
		return userDao.getAllUser();
	}

}

5、在WEB-INF文件夾下創建jsp文件夾，並添加userList.jsp，showUser.jsp、addUser.jsp

userList.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP 'showUser.jsp' starting page</title>
    
	<meta http-equiv="pragma" content="no-cache">
	<meta http-equiv="cache-control" content="no-cache">
	<meta http-equiv="expires" content="0">    
	<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
	<meta http-equiv="description" content="This is my page">
	<!--
	<link rel="stylesheet" type="text/css" href="styles.css">
	-->

  </head>
  
  <body>
    <c:forEach items="${uList }" var="u">
    	用戶名稱：${u.name}
    	用戶年齡：${u.age }
    	<br/>
    </c:forEach>
  </body>
</html>

addUser.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP 'addUser.jsp' starting page</title>
    
	<meta http-equiv="pragma" content="no-cache">
	<meta http-equiv="cache-control" content="no-cache">
	<meta http-equiv="expires" content="0">    
	<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
	<meta http-equiv="description" content="This is my page">
	<!--
	<link rel="stylesheet" type="text/css" href="styles.css">
	-->

  </head>
  
  <body>
    <form id="addUser" action="user/addUser" method="post"> 
	    userName: <input id="name" name="name" /><br/> 
	    password: <input id="password" name="password" /><br/> 
	    age: <input id="age" name="age"/><br/> 
	    <input type="submit" value="添加新用戶"/> 
	</form>
  </body>
</html>

showUser.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP 'showUser.jsp' starting page</title>
    
	<meta http-equiv="pragma" content="no-cache">
	<meta http-equiv="cache-control" content="no-cache">
	<meta http-equiv="expires" content="0">    
	<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
	<meta http-equiv="description" content="This is my page">
	<!--
	<link rel="stylesheet" type="text/css" href="styles.css">
	-->

  </head>
  
  <body>
    ${user.name }<br>
  </body>
</html>

6、創建數據庫，並創建表

create database maventest;
use maventest;

CREATE TABLE `user` (
  `id` int(12) NOT NULL AUTO_INCREMENT,
  `name` varchar(50) NOT NULL,
  `password` varchar(50) NOT NULL,
  `age` int(9) NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=12 DEFAULT CHARSET=utf8;

insert  into `user`(`id`,`name`,`password`,`age`) values (1,'admin','admin',22);

7、整個項目文件結構圖

8、部署發佈項目，進行測試

至此，框架搭建完成。

5.常見問題

問題1：pom.xml文件裏的代碼到哪裏找？

解答：http://www.mvnrepository.com/

問題2：新建MAVEN項目過程中，出現下圖錯誤？

解決：在MyEclipse的安裝目錄找到myeclipse.ini，將分配的堆內存加大

問題3：新建完工程後出現以下錯誤？

解答：在pom.xml添加以下代碼即可，添加完代碼就會自動下載好jar包

問題4：修改pom.xml時出現以下錯誤？

解答：這是由於jar包沒有正確下載導致的，找到錯誤的jar包位置，將文件夾裏的文件刪掉，將pom.xml裏該jar包的配置代碼刪除後再重新寫上，讓MAVEN重新下載jar包即可。

問題5：出現以下錯誤？

解答：

問題6：出現以下錯誤？

解答：將項目的jre版本換成1.7或者以上的版本即可

問題7：出現以下錯誤，並且已經確定jre是1.7版本或者以上版本。

解答：在pom.xml文件的<build></build>的標籤中加入以下代碼，然後Update Project（參照問題5）

<build>
	<finalName>Maven_Project</finalName>
	<plugins>
		<plugin>
			<groupId>org.apache.maven.plugins</groupId>
			<artifactId>maven-compiler-plugin</artifactId>
			<version>2.3.2</version>
			<configuration>
				<source>1.7</source>
				<target>1.7</target>
			</configuration>
		</plugin>
	</plugins>
</build>

問題8：訪問報錯

解答：請確認地址中的項目，跟項目中的Web Context-root地址一致。

問題9：直接導入代碼報錯

解答：如果想直接導入代碼需要先做文章開頭的1和2兩步，即用一個自己的新的倉庫來存儲jar包，不然容易跟已有的倉庫配置衝突，導致jar包無法下載或下載不全。下圖是我導入的過程，下載jar的過程比較慢，並且下載完了還報錯，但是報錯並不影響項目的正確運行。

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