SpringMVC整合Mongodb開發

本文轉載自查看原文 2017-03-16 11:06 2053 spring mvc

轉載：http://www.cnblogs.com/dennisit/p/3372568.html

系統環境:

操作系統: windows xp

數據庫: mongodb2.0.6

驅動包: Spring3.1.2 + mongodb2.7.3 + spring-data-mongodb1.0.1

說明: 對於xp系統用戶,在執行mongod.exe安裝mongodb時出現,無法定位程序輸入點 InterlockedCompareExchange64 於動態鏈接庫KERNEL32.dll上,這是因為最新的開發分支已經不再支持xp.也就是說你的mongodb安裝包不支持xp系統.V2.0.6是最新也是最后一個新版本支持xp.所以筆者使用數據庫為2.0.6

項目結構:

配置說明:
Web.xml文件配置spring相關與springmvc相關.

<?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" />
    
    
    <!-- 配置基於Session的處理,將提交上來的locale參數進行處理 -->  
    <bean id="localeResolver" class="org.springframework.web.servlet.i18n.SessionLocaleResolver">
        <!-- 該屬性可以不用配置 -->
        <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" />    
   
   <!-- 導入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">  
          
    <!-- 加載mongodb的屬性配置文件 -->
    <context:property-placeholder location="classpath:mongodb.properties" />
    
    <!-- 定義mongo對象，對應的是mongodb官方jar包中的Mongo，replica-set設置集群副本的ip地址和端口 -->
    <mongo:mongo id="mongo" replica-set="${mongo.hostport}">
        <!-- 一些連接屬性的設置 -->    
        <mongo:options
             connections-per-host="${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的屬性配置文件mongodb.properties

mongo.hostport=127.0.0.1:27017
mongo.connectionsPerHost=8
mongo.threadsAllowedToBlockForConnectionMultiplier=4
#連接超時時間
mongo.connectTimeout=1000
#等待時間
mongo.maxWaitTime=1500
mongo.autoConnectRetry=true
mongo.socketKeepAlive=true
#Socket超時時間
mongo.socketTimeout=1500
mongo.slaveOk=true

編寫Controller、Service、Dao相關.這里我們測試以下Spring-data-mong中對Collection的實現機制. 我們創建不同的實體類型Member、Article

然后編寫對應的Service、Dao實現.這里我們側重點持久層實現

持久層的操作實現

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:dennisit@163.com'> Cn.蘇若年 (En.dennisit)</a> Copy Right since 2013-10-16 
 *
 * com.pudp.dao.ArticleDao.java
 *
 */

@Repository
public class ArticleDao extends MongoGenDao<Article>{
    
    /**
     * 實現鈎子方法,返回反射的類型
     * @author <a href='mailto:dennisit@163.com'>Cn.蘇若年(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:dennisit@163.com'> Cn.蘇若年 (En.dennisit)</a> Copy Right since 2013-10-13 
 *
 * com.pudp.dao.MemberDao.java
 *
 */
@Repository
public class MemberDao extends MongoGenDao<Member>{

    /**
     * 實現鈎子方法,返回反射的類型
     * @author <a href='mailto:dennisit@163.com'>Cn.蘇若年(En.dennisit)</a> Copy Right since 2013-10-13 
     *                
     * @return
     */
    @Override
    protected Class<Member> getEntityClass() {
        return Member.class;
    }
}

MongoGenDao中我們實現了對庫中添加數據

package com.pudp.base;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.mongodb.core.MongoTemplate;

/**
 * description:
 *
 * @author <a href='mailto:dennisit@163.com'> Cn.蘇若年 (En.dennisit)</a> Copy Right since 2013-10-13 
 *
 * com.pudp.base.MongoGenDao.java
 *
 */

public abstract class MongoGenDao<T> {

    @Autowired
    protected MongoTemplate mongoTemplate;

    
    /**
     * 保存一個對象
     *
     * @author <a href='mailto:dennisit@163.com'>Cn.蘇若年(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);
    }    
    
    /**
     * 為屬性自動注入bean服務
     *
     * @author <a href='mailto:dennisit@163.com'>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;
    }
    
}

這里需要說明的是MongoTemplate對庫的管理。

MongoTemplate對庫Collection的管理

我們使用MongoTemplate操作持久層.這里如果我們沒有指定CollectionName的話,會依實體類型的類名作為庫中的集合名,當我們執行數據入庫操作之后,從數據庫中查看到如下信息.

當然,如果我們想自己定義數據庫的Collection名的化,可以在持久層Dao中指定. 關於Mongodb的可以Mongodb相關的內容. 后續將介紹SpringMVC+ Mongodb 的CRUD + 分頁實現.

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