SpringMVC整合Mongodb开发 架构搭建

系统环境:

操作系统:  windows xp

数 据 库:  mongodb2.0.6

驱 动 包: Spring3.1.2 + mongodb2.7.3 + spring-data-mongodb1.0.1

说明: 对于xp系统用户,在执行mongod.exe安装mongodb时 出现,无法定位程序输入点 InterlockedCompareExchange64 于动态链接库KERNEL32.dll上,这是因为最新的开发分支已经不再支持xp.也就是说你的mongodb安装包不支持xp系统.V2.0.6是最新也是最后一个新版本支持xp.所以笔者使用数据库为2.0.6

项目结构:

配置说明:
Web.xml文件配置spring相关与springmvc相关.

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

<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

    

      <!-- spring配置 -->

    <context-param>

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

        <param-value>/WEB-INF/context/spring-context.xml</param-value>

    </context-param>



    <listener>

        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

    </listener>



    <!-- spring MVC配置 -->

    <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/context/servlet-context.xml</param-value>  <!--指定XML文件位置-->

        </init-param> 

        <load-on-startup>4</load-on-startup>

          

    </servlet>  

    <servlet-mapping>  

        <servlet-name>springmvc</servlet-name>  

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

    </servlet-mapping>

    

  <welcome-file-list>

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

  </welcome-file-list>

</web-app>

 Springmvc的配置文件servlet-context.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:util="http://www.springframework.org/schema/util" 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:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.1.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-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/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd">



    <!-- DispatcherServlet Context: defines this servlet's request-processing infrastructure -->

    

    <!-- Enables the Spring MVC @Controller programming model -->

    <mvc:annotation-driven />



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

    

    

    <!-- 配置基于Session的处理,将提交上来的locale参数进行处理 -->  

    <bean id="localeResolver" class="org.springframework.web.servlet.i18n.SessionLocaleResolver">

        <!-- 该属性可以不用配置 -->

        <property name="defaultLocale" value="ja"></property>

    </bean>  

    

    <!-- Resolves views selected for rendering by @Controllers to .jsp resources in the /WEB-INF/views directory -->

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

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

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

    </bean>

    

    

</beans>

spring配置文件Spring-context.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:util="http://www.springframework.org/schema/util" 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:context="http://www.springframework.org/schema/context" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.1.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-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/context http://www.springframework.org/schema/context/spring-context-3.1.xsd">

    

   

   <context:annotation-config />

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

   

   <!-- 导入mongodb的配置文件 -->

   <import resource="mongodb-context.xml"/>

       

</beans>

mongodb的配置文件mongodb-context.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:context="http://www.springframework.org/schema/context" xmlns:mongo="http://www.springframework.org/schema/data/mongo" xsi:schemaLocation="http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/data/mongo http://www.springframework.org/schema/data/mongo/spring-mongo-1.0.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">  

          

    <!-- 加载mongodb的属性配置文件 -->

    <context:property-placeholder location="classpath:mongodb.properties" />

    

    <!-- 定义mongo对象，对应的是mongodb官方jar包中的Mongo，replica-set设置集群副本的ip地址和端口 -->

    <mongo:mongo id="mongo" replica-set="${mongo.hostport}">

        <!-- 一些连接属性的设置 -->    

        <mongo:options connections-per-host="${mongo.connectionsPerHost}" threads-allowed-to-block-for-connection-multiplier="${mongo.threadsAllowedToBlockForConnectionMultiplier}" connect-timeout="${mongo.connectTimeout}" max-wait-time="${mongo.maxWaitTime}" auto-connect-retry="${mongo.autoConnectRetry}" socket-keep-alive="${mongo.socketKeepAlive}" socket-timeout="${mongo.socketTimeout}" slave-ok="${mongo.slaveOk}" write-number="1" write-timeout="0" write-fsync="true"/>        

    </mongo:mongo>

    <mongo:db-factory dbname="database" mongo-ref="mongo" />

    

    <bean id="mongoTemplate" class="org.springframework.data.mongodb.core.MongoTemplate">

        <constructor-arg ref="mongo" />

        <constructor-arg name="databaseName" value="db_mongo" />

    </bean>



</beans>

mongodb的属性配置文件mongodb.properties

mongo.hostport=127.0.0.1:27017

mongo.connectionsPerHost=8

mongo.threadsAllowedToBlockForConnectionMultiplier=4

#连接超时时间

mongo.connectTimeout=1000

#等待时间

mongo.maxWaitTime=1500

mongo.autoConnectRetry=true

mongo.socketKeepAlive=true

#Socket超时时间

mongo.socketTimeout=1500

mongo.slaveOk=true

编写Controller、Service、Dao相关.这里我们测试以下Spring-data-mong中对Collection的实现机制. 我们创建不同的实体类型Member、Article

然后编写对应的Service、Dao实现.这里我们侧重点持久层实现

持久层的操作实现

ArticleDao

package com.pudp.dao; import org.springframework.stereotype.Repository; import com.pudp.base.MongoGenDao; import com.pudp.model.Article; /** * description: * * @author <a href='mailto:[email protected]'> Cn.苏若年 (En.dennisit)</a> Copy Right since 2013-10-16 * * com.pudp.dao.ArticleDao.java * */ @Repository public class ArticleDao extends MongoGenDao<Article>{ /** * 实现钩子方法,返回反射的类型 * @author <a href='mailto:[email protected]'>Cn.苏若年(En.dennisit)</a> Copy Right since 2013-10-13 * * @return

     */ @Override protected Class<Article> getEntityClass() { return Article.class; } }

MemberDao

package com.pudp.dao; import org.springframework.stereotype.Repository; import com.pudp.base.MongoGenDao; import com.pudp.model.Member; /** * description: * * @author <a href='mailto:[email protected]'> Cn.苏若年 (En.dennisit)</a> Copy Right since 2013-10-13 * * com.pudp.dao.MemberDao.java * */ @Repository public class MemberDao extends MongoGenDao<Member>{ /** * 实现钩子方法,返回反射的类型 * @author <a href='mailto:[email protected]'>Cn.苏若年(En.dennisit)</a> Copy Right since 2013-10-13 * * @return

     */ @Override protected Class<Member> getEntityClass() { return Member.class; } }

MongoGenDao中我们实现了对库中添加数据

package com.pudp.base; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.data.mongodb.core.MongoTemplate; /** * description: * * @author <a href='mailto:[email protected]'> Cn.苏若年 (En.dennisit)</a> Copy Right since 2013-10-13 * * com.pudp.base.MongoGenDao.java * */



public abstract class MongoGenDao<T> { @Autowired protected MongoTemplate mongoTemplate; /** * 保存一个对象 * * @author <a href='mailto:[email protected]'>Cn.苏若年(En.dennisit)</a> Copy Right since 2013-10-13 下午03:37:28 * * @param t * @return

     */

    public void save(T t){ this.mongoTemplate.save(t); } /** * 为属性自动注入bean服务 * * @author <a href='mailto:[email protected]'>Cn.pudp(En.dennisit)</a> Copy Right since 2013-10-13 下午03:21:23 * * @param mongoTemplate */

    public void setMongoTemplate(MongoTemplate mongoTemplate) { this.mongoTemplate = mongoTemplate; } }

这里需要说明的是MongoTemplate对库的管理。

MongoTemplate对库Collection的管理

我们使用MongoTemplate操作持久层.这里如果我们没有指定CollectionName的话,会依实体类型的类名作为库中的集合名,当我们执行数据入库操作之后,从数据库中查看到如下信息.

当然,如果我们想自己定义数据库的Collection名的化,可以在持久层Dao中指定. 关于Mongodb的可以Mongodb相关的内容. 后续将介绍SpringMVC+ Mongodb 的CRUD + 分页实现.

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