Spring Data MongoDB

时间:2022-05-03
本文章向大家介绍Spring Data MongoDB，主要内容包括以下节选自《Netkiller Java 手札》、11.6.2. Spring Data MongoDB、11.6.2.2. springframework-servlet.xml、11.6.2.3. Controller、11.6.2.4. Controller、11.6.2.5. 查看测试结果、基本概念、基础应用、原理机制和需要注意的事项等，并结合实例形式分析了其使用技巧，希望通过本文能帮助到大家理解应用这部分内容。

以下节选自《Netkiller Java 手札》

11.6.2. Spring Data MongoDB

11.6.2.1. pom.xml

注意Spring4 与 1.9.1.RELEASE有兼容性问题，日志提示 Error creating bean with name 'mongoTemplate' defined in ServletContext resource

		<dependency>
			<groupId>org.springframework.data</groupId>
			<artifactId>spring-data-mongodb</artifactId>
			<version>1.8.1.RELEASE</version>
		</dependency>

11.6.2.2. springframework-servlet.xml

	<mongo:db-factory id="mongoDbFactory" host="${mongo.host}" port="${mongo.port}" dbname="${mongo.database}" />
	<!-- username="${mongo.username}" password="${mongo.password}" -->

	<bean id="mongoTemplate" class="org.springframework.data.mongodb.core.MongoTemplate">
        <constructor-arg name="mongoDbFactory" ref="mongoDbFactory"/>
    </bean>
    
    <mongo:mapping-converter id="converter" db-factory-ref="mongoDbFactory"/>
    <bean id="gridFsTemplate" class="org.springframework.data.mongodb.gridfs.GridFsTemplate">
      <constructor-arg ref="mongoDbFactory"/>
      <constructor-arg ref="converter"/>
    </bean>

例 11.3. Spring Data MongoDB - springframework-servlet.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" 
	xmlns:mvc="http://www.springframework.org/schema/mvc" 
	xmlns:context="http://www.springframework.org/schema/context" 
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
	xmlns:p="http://www.springframework.org/schema/p"
	xmlns:mongo="http://www.springframework.org/schema/data/mongo"
	xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="
        http://www.springframework.org/schema/beans     
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/mvc 
        http://www.springframework.org/schema/mvc/spring-mvc.xsd
        http://www.springframework.org/schema/context 
        http://www.springframework.org/schema/context/spring-context.xsd
		http://www.springframework.org/schema/data/mongo
		http://www.springframework.org/schema/data/mongo/spring-mongo-1.5.xsd        
        ">

	<mvc:resources location="/images/" mapping="/images/**" />
	<mvc:resources location="/css/" mapping="/css/**" />
	<mvc:resources location="/js/" mapping="/js/**" />
	<mvc:resources location="/zt/" mapping="/zt/**" />
	<mvc:resources location="/sm/" mapping="/sm/**" />
	<mvc:resources location="/module/" mapping="/module/**" />

	<context:component-scan base-package="cn.netkiller.controller" />
	<!-- <context:property-placeholder location="classpath:resources/development.properties" /> -->
	<mvc:annotation-driven />

	<bean id="viewResolver" class="org.springframework.web.servlet.view.UrlBasedViewResolver">
		<property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
		<property name="prefix" value="/WEB-INF/jsp/" />
		<property name="suffix" value=".jsp" />
	</bean>

	<bean id="configuracion" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
		<property name="location" value="classpath:resources/development.properties" />
	</bean>
	
	<!-- MongoDB Connection Factory -->
	<mongo:db-factory id="mongoDbFactory" host="${mongo.host}" port="${mongo.port}" dbname="${mongo.database}" />
	<!-- username="${mongo.username}" password="${mongo.password}" -->
	
	<!-- MongoDB template definition -->
	<bean id="mongoTemplate" class="org.springframework.data.mongodb.core.MongoTemplate">
        <constructor-arg name="mongoDbFactory" ref="mongoDbFactory"/>
    </bean>
    
    <!-- MongoDB GridFS template definition -->
    <mongo:mapping-converter id="converter" db-factory-ref="mongoDbFactory"/>
    <bean id="gridFsTemplate" class="org.springframework.data.mongodb.gridfs.GridFsTemplate">
      <constructor-arg ref="mongoDbFactory"/>
      <constructor-arg ref="converter"/>
    </bean>
    
	<!-- Redis Connection Factory -->
	<bean id="jedisConnFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory" p:host-name="192.168.2.1" p:port="6379" p:use-pool="true" />

	<!-- redis template definition -->
	<bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate" p:connection-factory-ref="jedisConnFactory" />
 
</beans>

development.properties 配置内容

			mongo.host=192.168.4.1
mongo.port=27017
mongo.username=test
mongo.password=passw0rd
mongo.database=website

11.6.2.3. Controller

package cn.netkiller.repositories;

import org.springframework.data.annotation.Id;
import org.springframework.data.mongodb.core.mapping.Document;

@Document(collection = "tracker")
public class Tracker {
	@Id
	private String id;
	private String loginname;
	private String unique;
	private String hostname;
	private String referrer;
	private String href;

	public Tracker() {
		// TODO Auto-generated constructor stub
	}

	public String getLoginname() {
		return loginname;
	}

	public void setLoginname(String loginname) {
		this.loginname = loginname;
	}

	public String getUnique() {
		return unique;
	}

	public void setUnique(String unique) {
		this.unique = unique;
	}

	public String getHostname() {
		return hostname;
	}

	public void setHostname(String hostname) {
		this.hostname = hostname;
	}

	public String getReferrer() {
		return referrer;
	}

	public void setReferrer(String referrer) {
		this.referrer = referrer;
	}

	public String getHref() {
		return href;
	}

	public void setHref(String href) {
		this.href = href;
	}

	@Override
	public String toString() {
		return "Tracker [id=" + id + ", loginname=" + loginname + ", unique=" + unique + ", hostname=" + hostname + ", referrer=" + referrer + ", href=" + href + "]";
	}

}

11.6.2.4. Controller

package cn.netkiller.controller;

import cn.netkiller.repositories.Tracker;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.stereotype.*;
import org.springframework.web.bind.annotation.*;

@Controller
public class TrackerController {

	@Autowired
	private MongoTemplate mongoTemplate;

	public TrackerController() {

	}

	@RequestMapping("/tracker/test")
	@ResponseBody
	String hello() {
		return "Hello World!";
	}

	@RequestMapping("/tracker")
	@ResponseBody
	String execute() {
		Tracker tracker = new Tracker();
		tracker.setLoginname("test");
		tracker.setUnique("111223456");
		tracker.setHostname("www.example.com");
		tracker.setHref("http://example.com/test.html");
		tracker.setReferrer("http://example.com/");
		this.mongoTemplate.insert(tracker);
		
		return tracker.toString();
	}

}

11.6.2.5. 查看测试结果

			> db.tracker.find();
{ "_id" : ObjectId("5757c0b92c526a6bda5eea3a"), "_class" : "cn.netkiller.repositories.Tracker", "loginname" : "test", "unique" : "111223456", "hostname" : "www.example.com", "referrer" : "http://example.com/", "href" : "http://example.com/test.html" }

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