学习使用spring data连接mongodb replset

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mongo

spring mongodb mvc

1、分别在两个命令窗口中以replset方式启动两个mongodb进程

D:\mongodb\bin>mongod.exe --dbpath=d:\mongodata\data0 --port=10001 --replSet rcw
/127.0.0.1:20001

D:\mongodb\bin>mongod.exe --dbpath=d:\mongodata\data1 --port=20001 --replSet rcw
/127.0.0.1:10001

2、连接到任何一个mongodb实例，初始话replset

mongo 127.0.0.1:10001/admin

> db.runCommand({"replSetInitiate":{
... "_id":"rcw",
... "members":[{
... "_id":1,
... "host":"127.0.0.1:10001"
... },
... {
... "_id":2,
... "host":"127.0.0.1:20001"
... }
... ]
... }})

3、再加入一个仲裁服务器

D:\mongodb\bin>mongod.exe --dbpath=d:\mongodata\data1 --port 30001 replSet 127.0.0.1:10001
mongo 127.0.0.1:10001/admin
>rs.addArb({"127.0.0.1:30001"})

4、下载spring，spring-data-common即（spring-data-core）以及spring-mongodb，注意这里的data-common要下载1.2.1的，才能和mongodb1.0.1配合，最新版会出错，建立一个spring mvc项目，配置文件
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>人才信息管理</display-name>
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:/config/spring/app-config.xml</param-value>
  </context-param>
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <servlet>
    <servlet-name>SpringMVC</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:/config/spring/mvc-config.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>SpringMVC</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>
  <filter>
    <filter-name>encodingFilter</filter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    <init-param>
      <param-name>encoding</param-name>
      <param-value>UTF-8</param-value>
    </init-param>
    <init-param>
      <param-name>forceEncoding</param-name>
      <param-value>true</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>encodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
  <listener>
    <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
  </listener>
  <listener>
    <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
  </listener>
  <!-- <filter>
    <filter-name>hibernateFilter</filter-name>
    <filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class>
  </filter>
  <filter-mapping>
    <filter-name>hibernateFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping> -->
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
  <error-page>
    <error-code>500</error-code>
    <location>/WEB-INF/views/commons/timeout.jsp</location>
  </error-page>
  <error-page>
    <error-code>404</error-code>
    <location>/WEB-INF/views/commons/timeout.jsp</location>
  </error-page>
  <error-page>
    <error-code>403</error-code>
    <location>/WEB-INF/views/commons/timeout.jsp</location>
  </error-page>
</web-app>

app-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: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">
 
	
	<context:property-placeholder location="classpath:/config/db.properties" />

	<!-- Activate Spring Data MongoDB repository support -->
  	<mongo:repositories base-package="com.fox.mongo" />

	<!-- Add Replica Set support -->
	<mongo:mongo id="mongo" replica-set="${mongo.replica.set}"/>
 
	<bean id="mongoTemplate" class="org.springframework.data.mongodb.core.MongoTemplate">
		<constructor-arg ref="mongo"/>
  		<constructor-arg value="${mongo.db.name}"/>
  		<!-- <constructor-arg value="example"/> -->
	</bean>


	<!-- Service for initializing MongoDB with sample data using MongoTemplate -->
	<bean id="initMongoService" class="com.fox.service.InitService" init-method="init"/>
 
	<!-- To translate any MongoExceptions thrown in @Repository annotated classes -->
	<context:component-scan base-package="com.fox">    
       <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>   
    </context:component-scan>
    
	<context:annotation-config />
 
</beans>

db.properties文件的内容

mongo.db.name=test
#mongo.host.name=localhost
#mongo.host.port=27017

mongo.replica.set=127.0.0.1:10001,127.0.0.1:20001

mvc-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: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-3.0.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
		http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
	<!-- 只搜索@Controller 标注的类 不搜索其他标注的类 -->
	<context:component-scan base-package="com.fox.controller"	use-default-filters="false">
		<context:include-filter type="annotation" 	expression="org.springframework.stereotype.Controller" />
	</context:component-scan>

	<context:annotation-config />

	<!-- 对某些静态资源，如css,图片等进行过滤 ,有引用 "/resources/**" 的路径引用转到工程的/resources/目录取资源 -->
	<!-- <mvc:resources mapping="/favicon.ico" location="/favicon.ico"/> -->
	<mvc:resources location="/resources/" mapping="/resources/**" />

	<!-- Configures the @Controller programming model -->
	<mvc:annotation-driven />
	
	
	<!-- Declare a view resolver -->
	<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
	    <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
	    <property name="prefix" value="/WEB-INF/views/"></property>
	    <property name="suffix" value=".jsp"/>
	</bean>

</beans>

CRUD的代码都是复制过来稍微修改了一下，映射类的代码

package com.fox.mongo;

import java.io.Serializable;

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

/**
 * A simple POJO representing a Person
 * 
 * @author Krams at {@link http://krams915@blogspot.com}
 */
@Document(collection="example")
public class Person implements Serializable {

	private static final long serialVersionUID = -5527566248002296042L;

	private String pid;
	private String firstName;
	private String lastName;
	private Double money;

	public String getPid() {
		return pid;
	}

	public void setPid(String pid) {
		this.pid = pid;
	}

	public String getFirstName() {
		return firstName;
	}

	public void setFirstName(String firstName) {
		this.firstName = firstName;
	}

	public String getLastName() {
		return lastName;
	}

	public void setLastName(String lastName) {
		this.lastName = lastName;
	}

	public Double getMoney() {
		return money;
	}

	public void setMoney(Double money) {
		this.money = money;
	}
}

service层的代码

package com.fox.service;

import java.util.List;
import java.util.UUID;

import javax.annotation.Resource;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.WriteResultChecking;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.data.mongodb.core.query.Update;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import com.fox.mongo.Person;

/**
 * Service for processing {@link Person} objects.
 * Uses Spring's {@link MongoTemplate} to perform CRUD operations.
 * <p>
 * For a complete reference to MongoDB
 * see http://www.mongodb.org/
 * <p>
 * For a complete reference to Spring Data MongoDB 
 * see http://www.springsource.org/spring-data
 * 
 * @author Krams at {@link http://krams915@blogspot.com}
 */
@Service("personService")
@Transactional
public class PersonService {

	protected static Log logger = LogFactory.getLog("service");
	
	@Resource(name="mongoTemplate")
	private MongoTemplate mongoTemplate;
	
	/**
	 * Retrieves all persons
	 */
	public List<Person> getAll() {
		logger.debug("Retrieving all persons");
 
		// Find an entry where pid property exists
        Query query = new Query(Criteria.where("pid").exists(true));
        // Execute the query and find all matching entries
        List<Person> persons = mongoTemplate.find(query, Person.class);
        
		return persons;
	}
	
	/**
	 * Retrieves a single person
	 */
	public Person get( String id ) {
		logger.debug("Retrieving an existing person");
		
		// Find an entry where pid matches the id
        Query query = new Query(Criteria.where("pid").is(id));
        // Execute the query and find one matching entry
        Person person = mongoTemplate.findOne(query, Person.class);
    	
		return person;
	}
	
	/**
	 * Adds a new person
	 */
	public Boolean add(Person person) {
		logger.debug("Adding a new user");
		
		try {
			
			// Set a new value to the pid property first since it's blank
			person.setPid(UUID.randomUUID().toString());
			// Insert to db
		    mongoTemplate.insert(person);

			return true;
			
		} catch (Exception e) {
			logger.error("An error has occurred while trying to add new user", e);
			return false;
		}
	}
	
	/**
	 * Deletes an existing person
	 */
	public Boolean delete(String id) {
		logger.debug("Deleting existing person");
		
		try {
			
			// Find an entry where pid matches the id
	        Query query = new Query(Criteria.where("pid").is(id));
	        // Run the query and delete the entry
	        mongoTemplate.remove(query);
	        
			return true;
			
		} catch (Exception e) {
			logger.error("An error has occurred while trying to delete new user", e);
			return false;
		}
	}
	
	/**
	 * Edits an existing person
	 */
	public Boolean edit(Person person) {
		logger.debug("Editing existing person");
		
		try {
			
			// Find an entry where pid matches the id
	        Query query = new Query(Criteria.where("pid").is(person.getPid()));
	        
			// Declare an Update object. 
	        // This matches the update modifiers available in MongoDB
			Update update = new Update();
	        
	        update.set("firstName", person.getFirstName());
	        mongoTemplate.updateMulti(query, update, "example");
	        
	        update.set("lastName", person.getLastName());
	        mongoTemplate.updateMulti(query, update,"example");
	        
	        update.set("money", person.getMoney());
	        mongoTemplate.updateMulti(query, update,"example");
	        
			return true;
			
		} catch (Exception e) {
			logger.error("An error has occurred while trying to edit existing user", e);
			return false;
		}
		
	}
}

controller

package com.fox.controller;

import java.util.List;

import javax.annotation.Resource;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;

import com.fox.mongo.Person;
import com.fox.service.PersonService;


/**
 * Handles and retrieves person request
 * 
 * @author Krams at {@link http://krams915@blogspot.com}
 */
@Controller
@RequestMapping("/main")
public class MainController {

	protected static Log logger = LogFactory.getLog("controller");
	
	@Resource(name="personService")
	private PersonService personService;
	
	/**
	 * Handles and retrieves all persons and show it in a JSP page
	 * 
	 * @return the name of the JSP page
	 */
    @RequestMapping(value = "/persons", method = RequestMethod.GET)
    public String getPersons(Model model) {
    	
    	
    	logger.debug("Received request to show all persons");
    	
    	// Retrieve all persons by delegating the call to PersonService
    	List<Person> persons = personService.getAll();
    	
    	// Attach persons to the Model
    	model.addAttribute("persons", persons);
    	
    	// This will resolve to /WEB-INF/jsp/personspage.jsp
    	return "personspage";
	}
    
    /**
     * Retrieves the add page
     * 
     * @return the name of the JSP page
     */
    @RequestMapping(value = "/persons/add", method = RequestMethod.GET)
    public String getAdd(Model model) {
    	logger.debug("Received request to show add page");
    
    	// Create new Person and add to model
    	// This is the formBackingOBject
    	model.addAttribute("personAttribute", new Person());

    	// This will resolve to /WEB-INF/jsp/addpage.jsp
    	return "addpage";
	}
 
    /**
     * Adds a new person by delegating the processing to PersonService.
     * Displays a confirmation JSP page
     * 
     * @return  the name of the JSP page
     */
    @RequestMapping(value = "/persons/add", method = RequestMethod.POST)
    public String add(@ModelAttribute("personAttribute") Person person) {
		logger.debug("Received request to add new person");
		
    	// The "personAttribute" model has been passed to the controller from the JSP
    	// We use the name "personAttribute" because the JSP uses that name
		
		// Call PersonService to do the actual adding
		personService.add(person);

    	// This will resolve to /WEB-INF/jsp/addedpage.jsp
		return "addedpage";
	}
    
    /**
     * Deletes an existing person by delegating the processing to PersonService.
     * Displays a confirmation JSP page
     * 
     * @return  the name of the JSP page
     */
    @RequestMapping(value = "/persons/delete", method = RequestMethod.GET)
    public String delete(@RequestParam(value="pid", required=true) String id, 
    										Model model) {
   
		logger.debug("Received request to delete existing person");
		
		// Call PersonService to do the actual deleting
		personService.delete(id);
		
		// Add id reference to Model
		model.addAttribute("pid", id);
    	
    	// This will resolve to /WEB-INF/jsp/deletedpage.jsp
		return "deletedpage";
	}
    
    /**
     * Retrieves the edit page
     * 
     * @return the name of the JSP page
     */
    @RequestMapping(value = "/persons/edit", method = RequestMethod.GET)
    public String getEdit(@RequestParam(value="pid", required=true) String id,  
    										Model model) {
    	logger.debug("Received request to show edit page");
    
    	// Retrieve existing Person and add to model
    	// This is the formBackingOBject
    	model.addAttribute("personAttribute", personService.get(id));
    	
    	// This will resolve to /WEB-INF/jsp/editpage.jsp
    	return "editpage";
	}
    
    /**
     * Edits an existing person by delegating the processing to PersonService.
     * Displays a confirmation JSP page
     * 
     * @return  the name of the JSP page
     */
    @RequestMapping(value = "/persons/edit", method = RequestMethod.POST)
    public String saveEdit(@ModelAttribute("personAttribute") Person person, 
    										   @RequestParam(value="pid", required=true) String id, 
    												Model model) {
    	logger.debug("Received request to update person");
    
    	// The "personAttribute" model has been passed to the controller from the JSP
    	// We use the name "personAttribute" because the JSP uses that name
    	
    	// We manually assign the id because we disabled it in the JSP page
    	// When a field is disabled it will not be included in the ModelAttribute
    	person.setPid(id);
    	
    	// Delegate to PersonService for editing
    	personService.edit(person);
    	
    	// Add id reference to Model
		model.addAttribute("pid", id);
		
    	// This will resolve to /WEB-INF/jsp/editedpage.jsp
		return "editedpage";
	}
    
}

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