spring整合mongodb

Spring Mongodb



目录
1 SPRING整合MONGODB 1
1.1 环境准备 1
1.2 包依赖 1
1.3 配置 2
2 案列 5
2.1 SPRING MVC整合MONGODB代码案例 5



1 Spring整合Mongodb
1.1 环境准备
1. mongodb官网 http://www.mongodb.org/，下载mongodb安装包和mongodb的java驱动包。
mongodb安装包（下载地址http://www.mongodb.org/downloads）。Mongodb的安装和使用可见mongodb权威指南。
mongodb驱动包（下载地址https://github.com/mongodb/mongo-java-driver/downloads）
2. Spring下载中心（http://www.springsource.org/download/community）下载spring，spring-data-mongodb，spring-data-commons包。

1.2 包依赖
项目所需依赖包如下：
Mongodb驱动包：
        mongo-2.8.0.jar
spring包：
        aopalliance-1.0.jar
        commons-logging-1.1.jar
        org.springframework.aop-3.1.RELEASE.jar
        org.springframework.asm-3.1.RELEASE.jar
        org.springframework.beans-3.1.RELEASE.jar
        org.springframework.context-3.1.RELEASE.jar
        org.springframework.context.support-3.1.RELEASE.jar
        org.springframework.core-3.1.RELEASE.jar
        org.springframework.expression-3.1.RELEASE.jar
        org.springframework.transaction-3.1.RELEASE.jar
        org.springframework.web-3.1.RELEASE.jar
        org.springframework.web.servlet-3.1.RELEASE.jar
        log4j-1.2.16.jar
        slf4j-log4j12-1.6.4.jar
        slf4j-api-1.6.4.jar
Spring Data Mongodb包：
        spring-data-mongodb-1.1.0.M2.jar
Spring Data Commons包：
        spring-data-commons-core-1.4.0.M1.jar





1.3 配置

（1）配置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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
  <display-name>TestSpringMongodb</display-name>

<!— spring mvc dispatcher servlet -->
   <servlet>
    <servlet-name>spring</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>spring</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>
	
  <listener>
	<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>
	
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
  
</web-app>

注意：url-pattern的配置为‘/’。

（2）配置applicationContext.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/mvc 
		http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">
	
	<!-- Activates various annotations to be detected in bean classes -->
	<context:annotation-config />
	
	<!-- Scans the classpath for annotated components that will be auto-registered as Spring beans.For example @Controller and @Service. Make sure to set the correct base-package-->
	<context:component-scan base-package="bgi.contrl" />
	<context:component-scan base-package="bgi.service" />
	
	<!-- Configures the annotation-driven Spring MVC Controller programming model.Note that, with Spring 3.0, this tag works in Servlet MVC only!  -->
	<mvc:annotation-driven /> 
	
	<!-- Loads MongoDB configuraton -->
	<import resource="mongo-config.xml"/> 
    		
</beans>

（3）配置mongo-config.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:mongo="http://www.springframework.org/schema/data/mongo"
	xsi:schemaLocation="http://www.springframework.org/schema/beans 
	   		http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
   			http://www.springframework.org/schema/data/mongo
    		http://www.springframework.org/schema/data/mongo/spring-mongo.xsd">
	
	<!-- Default bean name is 'mongo' -->
	<mongo:mongo host="localhost" port="27017"/>
	
	<!-- Offers convenience methods and automatic mapping between MongoDB JSON documents and your domain classes. -->
  	<bean id="mongoTemplate" class="org.springframework.data.mongodb.core.MongoTemplate">
  			<constructor-arg ref="mongo"/>
		    <constructor-arg name="databaseName" value="test"/>
  	</bean>
  	
</beans>

注意：官方文档和案例配置都是旧版本的配置案例，spring-data-mongo从1.0.0.M1到1.0.0.M3的版本叫做Spring Data Document。1.0.0.M4开始更名为Spring Data MongoDB 1.0.0 M4，不过官网并没有特别说明，乍一看有点莫名其妙，尤其是MongoTemplate从org.springframework.data.document.mongod移动到org.springframework.data.mongodb.core，官网的HelloWorldExample却还是用org.springframework.data.document.mongodb做配置案例。多少会导致使用时的误导。

（4）配置spring-servlet.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" 
	xsi:schemaLocation="http://www.springframework.org/schema/beans 
	   		http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
	
	<!-- Declare a view resolver -->
	<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver" 
    		p:prefix="/" p:suffix=".jsp" />

</beans>

注意：spring-servlet.xml的命名是根据web.xml中配置spring DispatcherServlet的名字 （<servlet-name>spring</servlet-name>）加上-servlet命名的。

2 案列
2.1 Spring mvc整合mongodb代码案例

（1），control层

package bgi.contrl;

import java.util.logging.Logger;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import bgi.pojo.User;
import bgi.service.UserService;


@Controller
@RequestMapping("/user")
public class UserCtrl {
	
	
	private static Logger logger = Logger.getLogger(UserCtrl.class.getName());
	
	@Autowired
	UserService userService;
	
	@RequestMapping("/index")
	public ModelAndView index(){
		ModelAndView mav = new ModelAndView("/user/index");
		return mav;
	}
	
	@RequestMapping("/save")
	public ModelAndView saveUser(User user){
		
		ModelAndView mav = new ModelAndView("/user/index");
		
		logger.info("save:"+user);
		
		userService.saveUser(user);
		
		return mav;
	}
	
	@RequestMapping("/find")
	public ModelAndView findUser(User user){
		
		ModelAndView mav = new ModelAndView("/user/index");
		
		user = userService.findUserByName(user.getName());
		
		logger.info("find:"+user);
		
		return mav;
	}
	

}

（2），service层

package bgi.service;


import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.stereotype.Service;

import bgi.pojo.User;


@Service
public class UserService {
	
	private static String USER_COLLECTION = "user";

	@Autowired
	MongoTemplate mongoTemplate;
	
	/**
	 * 
	 * @param user
	 */
	public void saveUser(User user){
		
		mongoTemplate.save(user, USER_COLLECTION);
		
	}
	
	/**
	 * 
	 * @param name
	 * @return
	 */
	public User findUserByName(String name){
		
		return mongoTemplate.findOne(new Query(Criteria.where("name").is(name)), User.class, USER_COLLECTION);
		
	}
	
}

（3），domain层

package bgi.pojo;

import java.io.Serializable;

import org.springframework.data.annotation.Id;


public class User implements Serializable{


	private static final long serialVersionUID = 1L;
	
	@Id
	String uid;
	String name;
	int age;
	
	
	public String getUid() {
		return uid;
	}
	public void setUid(String uid) {
		this.uid = uid;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	
	@Override
	public String toString() {
		return "{USER:{uid:"+this.uid+",name:"+this.name+",age:"+this.age+"}}";
	}
	
}

（4）测试
http://localhost:8080/TestSpringMongodb/user/save?name=xiaohong&age=23
save:{USER:{uid:5020bef0fe7d16eb86275c7a,name:xiaohong,age:23}}
http://localhost:8080/TestSpringMongodb/user/find?name=xiaohong
find:{USER:{uid:5020bef0fe7d16eb86275c7a,name:xiaohong,age:23}}