搭建互联网架构学习--005--框架初步拆分ssm单一框架

经过前边的准备步骤，服务器基本搭建完毕，接下来就开始一步步搭建框架了。

拆分单一结构：拆分的目的是为下一步引入dubbo做准备的。

把下边这个单一maven框架进行拆分

这个就是一个简单的maven项目，对应的表是：我们的表建在192.168.75.3上的mysql的enterprise表

拆分成如下的几个工程，其实很多公司都是这么做的，我们以前的项目也是这样的，我们一般把common、pojo、Dao、service、controller、web（或者把controller和web放在一块），其中parent是个pom工程，定义jar包版本等；facade是接口，service是接口实现，这俩是jar包工程，web-service是controller是个war包工程。

（对于他这个命名，很费解）

 为了保持和课程的一致性，把到此步骤每个工程的代码贴出来吧：

一：xxxx-parent 父工程

pom工程，就是一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.xxxx.service</groupId>
  <artifactId>xxxx-parent</artifactId>
  <version>1.0</version>
  <packaging>pom</packaging>
 
<!-- <parent>
        <groupId>com.xxxx.service</groupId>
        <artifactId>sdk-java-super-pom</artifactId>
        <version>1.0</version>
        <relativePath>../xxxx-sdk/sdk-java-super-pom</relativePath>
    </parent>
 -->
    <properties>
        <slf4j_version>1.7.5</slf4j_version>
        <spring.version>4.1.9.RELEASE</spring.version>
          <mybatis.version>3.2.6</mybatis.version>
    </properties>
    
     

    <dependencies>
        <!-- Log libs -->
        <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>

    </dependencies>

    
    <build>
        <pluginManagement>
            <plugins>
                <!--This plugin's configuration is used to store Eclipse m2e settings 
                    only. It has no influence on the Maven build itself. -->
                <plugin>
                    <groupId>org.eclipse.m2e</groupId>
                    <artifactId>lifecycle-mapping</artifactId>
                    <version>1.0.0</version>
                    <configuration>
                        <lifecycleMappingMetadata>
                            <pluginExecutions>
                                <pluginExecution>
                                    <pluginExecutionFilter>
                                        <groupId>
                                            org.apache.maven.plugins
                                        </groupId>
                                        <artifactId>
                                            maven-dependency-plugin
                                        </artifactId>
                                        <versionRange>
                                            [2.0,)
                                        </versionRange>
                                        <goals>
                                            <goal>unpack</goal>
                                        </goals>
                                    </pluginExecutionFilter>
                                    <action>
                                        <ignore></ignore>
                                    </action>
                                </pluginExecution>
                            </pluginExecutions>
                        </lifecycleMappingMetadata>
                    </configuration>
                </plugin>
            </plugins>
        </pluginManagement>


        <plugins>
            <!-- 发布插件 -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-deploy-plugin</artifactId>
                <version>2.7</version>
                <configuration>
                    <uniqueVersion>false</uniqueVersion>
                </configuration>
            </plugin>
            
            
            <!-- java编译插件 -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.2</version>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
            
            <!-- 源码插件 -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-source-plugin</artifactId>
                <version>3.0.0</version>
                <executions>
                    <execution>
                        <id>attach-sources</id>
                        <goals>
                            <goal>jar</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

二：xxxx-facade 接口层

实体类 Enterprise.java：

package com.xxxx.mybatis.domain;

import java.io.Serializable;

public class Enterprise implements Serializable{
    /**
     * 
     */
    private static final long serialVersionUID = 1L;

    private Integer id;

    private String name;

    private String address;

    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 == null ? null : name.trim();
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address == null ? null : address.trim();
    }
}

Mapper:

package com.xxxx.mybatis.IDao;

import com.xxxx.mybatis.domain.Enterprise;

public interface EnterpriseMapper {
    int deleteByPrimaryKey(Integer id);

    int insert(Enterprise record);

    int insertSelective(Enterprise record);

    Enterprise selectByPrimaryKey(Integer id);

    int updateByPrimaryKeySelective(Enterprise record);

    int updateByPrimaryKey(Enterprise record);
}

Mapper.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.xxxx.mybatis.IDao.EnterpriseMapper">
  <resultMap id="BaseResultMap" type="com.xxxx.mybatis.domain.Enterprise">
    <id column="id" jdbcType="INTEGER" property="id" />
    <result column="name" jdbcType="VARCHAR" property="name" />
    <result column="address" jdbcType="VARCHAR" property="address" />
  </resultMap>
  <sql id="Base_Column_List">
    id, name, address
  </sql>
  <select id="selectByPrimaryKey" parameterType="java.lang.Integer" resultMap="BaseResultMap">
    select 
    <include refid="Base_Column_List" />
    from enterprise
    where id = #{id,jdbcType=INTEGER}
  </select>
  <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer">
    delete from enterprise
    where id = #{id,jdbcType=INTEGER}
  </delete>
  <insert id="insert" parameterType="com.xxxx.mybatis.domain.Enterprise">
    insert into enterprise (id, name, address
      )
    values (#{id,jdbcType=INTEGER}, #{name,jdbcType=VARCHAR}, #{address,jdbcType=VARCHAR}
      )
  </insert>
  <insert id="insertSelective" parameterType="com.xxxx.mybatis.domain.Enterprise">
    insert into enterprise
    <trim prefix="(" suffix=")" suffixOverrides=",">
      <if test="id != null">
        id,
      </if>
      <if test="name != null">
        name,
      </if>
      <if test="address != null">
        address,
      </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="address != null">
        #{address,jdbcType=VARCHAR},
      </if>
    </trim>
  </insert>
  <update id="updateByPrimaryKeySelective" parameterType="com.xxxx.mybatis.domain.Enterprise">
    update enterprise
    <set>
      <if test="name != null">
        name = #{name,jdbcType=VARCHAR},
      </if>
      <if test="address != null">
        address = #{address,jdbcType=VARCHAR},
      </if>
    </set>
    where id = #{id,jdbcType=INTEGER}
  </update>
  <update id="updateByPrimaryKey" parameterType="com.xxxx.mybatis.domain.Enterprise">
    update enterprise
    set name = #{name,jdbcType=VARCHAR},
      address = #{address,jdbcType=VARCHAR}
    where id = #{id,jdbcType=INTEGER}
  </update>
</mapper>

Service:

package com.xxxx.repo;

import com.xxxx.mybatis.domain.Enterprise;

public interface IEnterpriseService {
     public Enterprise getEnterpriseById(int enterpriseId);
}

pom:

<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.xxxx.service</groupId>
  <artifactId>xxxx-facade</artifactId>
  <version>1.0</version>
  
    <parent>
        <groupId>com.xxxx.service</groupId>
        <version>1.0</version>
        <artifactId>xxxx-parent</artifactId>
        <relativePath>../xxxx-parent</relativePath>
    </parent>
    
      
</project>

三：xxxx-service 接口实现

pom.xml:加入facade的依赖

<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.xxxx.service</groupId>
  <artifactId>xxxx-service</artifactId>
  <version>1.0</version>
  
      <parent>
        <groupId>com.xxxx.service</groupId>
        <version>1.0</version>
        <artifactId>xxxx-parent</artifactId>
        <relativePath>../xxxx-parent</relativePath>
    </parent>
    
  <dependencies>
      <!-- 接口层 -->
      <dependency>
          <groupId>com.xxxx.service</groupId>
          <artifactId>xxxx-facade</artifactId>
          <version>1.0</version>
      </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>
        
         <!-- 连接mysql -->
     <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>
     
      <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.1.30</version>
      </dependency>
      <dependency>
         <groupId>commons-dbcp</groupId>
         <artifactId>commons-dbcp</artifactId>
         <version>1.2.2</version>
      </dependency>
      
  </dependencies>
</project>

实现xxxx-facade的接口：

EnterpriseServiceImpl.java

package com.xxxx.repo.Impl;

import javax.annotation.Resource;

import org.springframework.stereotype.Service;

import com.xxxx.mybatis.IDao.EnterpriseMapper;
import com.xxxx.mybatis.domain.Enterprise;
import com.xxxx.repo.IEnterpriseService;


@Service("enterpriseService")
public class EnterpriseServiceImpl implements IEnterpriseService{

    @Resource
    private  EnterpriseMapper enterpriseMapper;
    
    @Override
    public Enterprise getEnterpriseById(int enterpriseId) {
        return enterpriseMapper.selectByPrimaryKey(enterpriseId);
    }

}

jdbc.properties:

driver=com.mysql.jdbc.Driver
url=jdbc:mysql://192.168.75.3:3306/bigdata
username=root
password=root
#u5b9au4e49u521du59cbu8fdeu63a5u6570  
initialSize=0  
#u5b9au4e49u6700u5927u8fdeu63a5u6570  
maxActive=20  
#u5b9au4e49u6700u5927u7a7au95f2  
maxIdle=20  
#u5b9au4e49u6700u5c0fu7a7au95f2  
minIdle=1  
#u5b9au4e49u6700u957fu7b49u5f85u65f6u95f4  
maxWait=60000  

spring.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">  
          <context:annotation-config /> 
         
    <!-- 自动扫描 -->  
    <context:component-scan base-package="com.xxxx" />  
    
     <!-- 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:com/xxxx/mybatis/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.xxxx.mybatis.IDao" />  
        <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>  

四：xxxx-web-service controller

　　

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.xxxx.service</groupId>
  <artifactId>xxxx-web-service</artifactId>
  <version>1.0</version>
  <packaging>war</packaging>   
  
  <parent>
        <groupId>com.xxxx.service</groupId>
        <version>1.0</version>
        <artifactId>xxxx-parent</artifactId>
        <relativePath>../xxxx-parent</relativePath>
    </parent>
  
  <dependencies>
      <dependency>
          <groupId>com.xxxx.service</groupId>
          <artifactId>xxxx-facade</artifactId>
        <version>1.0</version>
      </dependency>
      <dependency>
          <groupId>com.xxxx.service</groupId>
          <artifactId>xxxx-service</artifactId>
        <version>1.0</version>
      </dependency>
      
<!-- 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>

        <dependency>
            <groupId>com.github.sgroschupf</groupId>
            <artifactId>zkclient</artifactId>
            <version>0.1</version>
        </dependency>
         <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>2.5.1</version>
           
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-annotations</artifactId>
            <version>2.5.0</version>
           
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.4.0</version>
           
        </dependency>
     <dependency>
        <groupId>javax</groupId>
        <artifactId>javaee-api</artifactId>
        <version>7.0</version>
     </dependency>
  </dependencies>
  
  <build>
      <plugins>
          <plugin>
              <artifactId>maven-war-plugin</artifactId>
              <configuration>
                  <version>3.0</version>
              </configuration>
          </plugin>
      </plugins>
  </build>
</project>

EnterpriseController:

package com.xxxx.controller;

import javax.annotation.Resource;

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

import com.xxxx.mybatis.domain.Enterprise;
import com.xxxx.repo.IEnterpriseService;

@RestController
@RequestMapping("/enterprise")
public class EnterpriseController {
     @Resource
     IEnterpriseService enterpriseService;
     
     @RequestMapping("/getname")
     public Enterprise getName(Integer id){
         return enterpriseService.getEnterpriseById(id);
     }
}

log4j:

log4j.rootLogger=DEBUG,A1
log4j.logger.org.mybatis = DEBUG
log4j.appender.A1=org.apache.log4j.ConsoleAppender
log4j.appender.A1.layout=org.apache.log4j.PatternLayout
log4j.appender.A1.layout.ConversionPattern=%-d{yyyy-MM-dd HH:mm:ss,SSS} [%t] [%c]-[%p] %m%n

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"> 
        
    
    <!-- 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.xxxx.controller" />  
     <!--避免IE执行AJAX时，返回JSON出现下载文件 -->  
    <bean id="mappingJacksonHttpMessageConverter"  
        class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">  
        <property name="supportedMediaTypes">  
            <list>  
                <value>text/html;charset=UTF-8</value>  
            </list>  
        </property>  
    </bean>  
  
    <mvc:annotation-driven></mvc:annotation-driven>
     <!-- 教程里使用的是下边的配置，但是这个配置 导致@RestController无效，我改成了上边的注解驱动，解决-->
     <!-- 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>  
                <ref bean="mappingJacksonHttpMessageConverter" /> JSON转换器  
            </list>  
        </property>  
    </bean>   -->
    <!-- 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">  
        <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>  

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.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.jsp</welcome-file>  
    </welcome-file-list>  
  
</web-app>  

启动192.168.75.3,启动mysql数据库 ：service mysqld start，然后启动 xxxx-web-service工程，访问：

 下一步引入dubbo