如何优雅的进行Spring整合MongoDB详解_Java

前言

本文重点是要将mongodb与spring整合到项目中去，在实践中发现问题，追踪问题，然后解决问题。下面话不多说了，来一起看看详细的介绍吧。

一、准备

maven、spring(spring-data-mongodb)
spring data for mongodb是spring data的一个子模块。目标是为mongodb提供一个相近的一致的基于spring的编程模型。
spring data for mongodb核心功能是映射pojo到mongo的dbcollection中的文档，并且提供repository 风格数据访问层。

二、特性

mongodb的提供了一个面向文档存储，操作起来比较简单和容易。
你可以在mongodb记录中设置任何属性的索引 (如：firstname="ning",address="beijing")来实现更快的排序。
你可以通过本地或者网络创建数据镜像，这使得mongodb有更强的扩展性。
如果负载的增加（需要更多的存储空间和更强的处理能力），它可以分布在计算机网络中的其他节点上这就是所谓的分片。
mongo支持丰富的查询表达式。查询指令使用json形式的标记，可轻易查询文档中内嵌的对象及数组。
mongodb 使用update()命令可以实现替换完成的文档（数据）或者一些指定的数据字段。
mongodb中的map/reduce主要是用来对数据进行批量处理和聚合操作。
map和reduce。map函数调用emit(key,value)遍历集合中所有的记录，将key与value传给reduce函数进行处理。
map函数和reduce函数是使用javascript编写的，并可以通过db.runcommand或mapreduce命令来执行mapreduce操作。
gridfs是mongodb中的一个内置功能，可以用于存放大量小文件。
mongodb允许在服务端执行脚本，可以用javascript编写某个函数，直接在服务端执行，也可以把函数的定义存储在服务端，下次直接调用即可。
mongodb支持各种编程语言:ruby，python，java，c++，php，c#等多种语言。

三、依赖包

<dependency>
 <groupid>org.springframework.data</groupid>
 <artifactid>spring-data-mongodb</artifactid>
 <version>1.5.0.release</version>
</dependency>
<dependency>
 <groupid>org.slf4j</groupid>
 <artifactid>slf4j-log4j12</artifactid>
 <version>1.5.10</version>
</dependency>

spring 相关依赖

<!-- spring web相关依赖 -->
 <dependency>
  <groupid>org.springframework</groupid>
  <artifactid>spring-web</artifactid>
  <version>${spring.version}</version>
 </dependency>
 <dependency>
  <groupid>org.springframework</groupid>
  <artifactid>spring-webmvc</artifactid>
  <version>3.1.2.release</version>
 </dependency>
 <!-- spring test依赖 -->
 <dependency>
  <groupid>org.springframework</groupid>
  <artifactid>spring-test</artifactid>
  <version>4.3.1.release</version>
 </dependency>

四、集成mongodb

【注：mongodb添加权限管理请参见我的这篇文章:mongdb开启权限认证】

mongodb.properties

mongo.hostport=172.16.4.166:27017
mongo.dbname=ad_api_count
mongo.username=hehaitao
mongo.password=hehaitao
mongo.connectionsperhost=8
mongo.threadsallowedtoblockforconnectionmultiplier=4
#\u8fde\u63a5\u8d85\u65f6\u65f6\u95f4
mongo.connecttimeout=1000
#\u7b49\u5f85\u65f6\u95f4
mongo.maxwaittime=1500
mongo.autoconnectretry=true
mongo.socketkeepalive=true
#socket\u8d85\u65f6\u65f6\u95f4
mongo.sockettimeout=1500
mongo.slaveok=true

mongodb.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-3.1.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-3.1.xsd">
 <!-- 加载mongodb的属性配置文件 -->
 <context:property-placeholder location="classpath:mongodb.properties" ignore-unresolvable="true"/>
 
 <!-- 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="${mongo.hostport}">
 <mongo:options
  connections-per-host="${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="${mongo.slaveok}"
  write-number="1"
  write-timeout="0"
  write-fsync="true"/> 
 </mongo:mongo>
 <mongo:db-factory id="mgfactory" 
 dbname="${mongo.dbname}" 
 username="${mongo.username}" 
 password="${mongo.password}"
  mongo-ref="mongo" />
 
 <bean id="mongotemplate" class="org.springframework.data.mongodb.core.mongotemplate">
 <constructor-arg name="mongodbfactory" ref="mgfactory"/>
 </bean>
</beans>

spring-contex.xml

<?xml version="1.0" encoding="utf-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
 xmlns:context="http://www.springframework.org/schema/context"
 xmlns:tx="http://www.springframework.org/schema/tx" 
 xmlns:aop="http://www.springframework.org/schema/aop"
 xmlns:task="http://www.springframework.org/schema/task"
 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-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/tx 
 http://www.springframework.org/schema/tx/spring-tx.xsd
 http://www.springframework.org/schema/aop
 http://www.springframework.org/schema/aop/spring-aop-3.1.xsd
 http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.1.xsd"> 
 <aop:aspectj-autoproxy proxy-target-class="true"/> 
 <!--使用注解管理bean -->
 <context:annotation-config/> 
 <!-- 扫描com.lutongnet下的所有类 -->
 <context:component-scan base-package="com.lutong.cps">
 <context:exclude-filter type = "annotation" expression = "org.springframework.stereotype.controller"/>
 </context:component-scan>
 <import resource="mongodb.xml"/> 
</beans>

五、代码实现

基础实现mongodbservice

/**
 * file name : mongodbservice.java
 * package : com.lutongnet.ad.service
 * description : todo
 * author : zhangfj
 * date : 2012-11-29
 * version : v1.0 
 */
package com.lutong.cps.schedule.service.fj;
import org.springframework.context.applicationcontext;
import org.springframework.context.support.classpathxmlapplicationcontext;
import org.springframework.data.mongodb.core.mongotemplate;
import org.springframework.data.mongodb.core.query.query;
import org.springframework.stereotype.service;
/** 
 * @author zhangfj
 *
 */
@service("mongodbservice")
public class mongodbservice
{
 /*@resource(name = "mongotemplate")
 protected mongotemplate mongotemplate;*/
 /**
 * 
 * @param query 
 * @param entityclass 
 * @return t 
 */
 public <t> t findone(query query, class<t> entityclass)
 {
 applicationcontext context=new classpathxmlapplicationcontext("mongodb.xml");
 mongotemplate mongotemplate= (mongotemplate) context.getbean("mongotemplate");
 // 可以直接调用
 return mongotemplate.findone(query, entityclass);
 }
}

继承类useradcountservice

/**
 * file name : useradcountservice.java
 * package : com.lutongnet.ad.service
 * description : todo
 * author : zhangfj
 * date : 2012-11-29
 * version : v1.0 
 */
package com.lutong.cps.schedule.service.fj;
import org.springframework.data.mongodb.core.query.criteria;
import org.springframework.data.mongodb.core.query.query;
import org.springframework.stereotype.service;

import com.lutong.cps.schedule.entity.useradcount;
/** 
 * @author zhangfj
 *
 */
@service("useradcountservice")
public class useradcountservice extends mongodbservice
{
 /**
 * 获取单个广告的观看次数，查询不到则返回0
 * 
 * @param adcode 
 * @return int 
 */
 public int getuseradcount(useradcount adcode)
 {
 criteria criteria = new criteria();
 criteria.andoperator(criteria.where("userad").is(adcode.getuserad()),
  criteria.where("adcode").is(adcode.getadcode()),
  criteria.where("countdate").is(adcode.getcountdate()));
 query query = new query(criteria);
 useradcount result = findone(query, useradcount.class);
 if (null != result)
 {
  return result.gettimescount();
 }
 return 0;
 }
}

实体类useradcount

package com.lutong.cps.schedule.entity;
import java.util.date;
import org.springframework.data.annotation.persistenceconstructor;
import org.springframework.data.mongodb.core.mapping.document;
/**
 * mongo专用统计单个用户的单个广告观看次数
 * @author cancer
 *
 */
@document(collection="useradcount")
public class useradcount
{
 private int timescount;
 
 /**
 * 用户账号
 */
 private string userad; 
 private string adcode;
 private string countdate;
 private date expireat;
@persistenceconstructor
 public useradcount(int timescount, string userad,string adcode,string countdate,date expireat)
 {
 this.timescount = timescount;
 this.userad = userad;
 this.adcode = adcode;
 this.countdate = countdate;
 this.expireat = expireat;
 }
 
 public useradcount(string userad,string adcode,string countdate)
 {
 this.userad = userad;
 this.adcode = adcode;
 this.countdate = countdate;
 }
 
 public useradcount(string userad,string adcode,string countdate,date expireat)
 {
 this.userad = userad;
 this.adcode = adcode;
 this.countdate = countdate;
 this.expireat = expireat;
 }
public useradcount(string countdate)
 {
 this.countdate = countdate;
 }

 public int gettimescount()
 {
 return timescount;
 }

 public void settimescount(int timescount)
 {
 this.timescount = timescount;
 }

 public string getuserad()
 {
 return userad;
 }

 public void setuserad(string userad)
 {
 this.userad = userad;
 }

 public string getadcode()
 {
 return adcode;
 }

 public void setadcode(string adcode)
 {
 this.adcode = adcode;
 }

 public string getcountdate() {
 return countdate;
 }

 public void setcountdate(string countdate) {
 this.countdate = countdate;
 }

 public date getexpireat() {
 return expireat;
 }

 public void setexpireat(date expireat) {
 this.expireat = expireat;
 } 
}

最后写一个测试类来测试下

import java.util.list;
import javax.annotation.resource;
import org.junit.test;
import org.junit.runner.runwith;
import org.springframework.test.context.contextconfiguration;
import org.springframework.test.context.junit4.springjunit4classrunner;
import com.acts.web.modules.mark.model.users;
import com.lutong.cps.schedule.service.fj.useradcountservice;
@contextconfiguration({ "classpath:spring-context.xml",
 "classpath:mongodb.xml"})
@runwith(springjunit4classrunner.class)
public class usertest {
 @resource(name = "useradcountservice")
 private useradcountservice useradcountservice;
 @test
 public void testdao() {
 try {
  useradcount useradcount = new useradcount("hehaitao", "pos001",
    datetime.now().tostring("yyyy-mm-dd"));
  int count = useradcountservice
    .getuseradcount(useradcount);
  system.out.println(count);
 } catch (exception e) {
  e.printstacktrace();
 }
 }
}

总结

以上就是这篇文章的全部内容了，希望本文的内容对大家的学习或者工作具有一定的参考学习价值，如果有疑问大家可以留言交流，谢谢大家对移动技术网的支持。