आसान शुरुआत: स्प्रिंग + मोंगोबी

<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <packaging>war</packaging> <groupId>habra</groupId> <artifactId>habr</artifactId> <version>1.0-SNAPSHOT</version> <!--    ,     --> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <version.jdk>1.6</version.jdk> <version.spring>4.0.2.RELEASE</version.spring> <version.spring.mongodb>1.4.0.RELEASE</version.spring.mongodb> <version.jackson>1.9.13</version.jackson> </properties> <dependencies> <!-- ,    Spring --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>${version.spring}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>${version.spring}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${version.spring}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${version.spring}</version> </dependency> <dependency> <groupId>org.springframework.data</groupId> <artifactId>spring-data-mongodb</artifactId> <version>${version.spring.mongodb}</version> </dependency> <!-- MongoDB  --> <dependency> <groupId>org.mongodb</groupId> <artifactId>mongo-java-driver</artifactId> <version>2.11.4</version> </dependency> <!-- Jackson JSON Mapper   ,    API   JSON .        . --> <dependency> <groupId>org.codehaus.jackson</groupId> <artifactId>jackson-mapper-asl</artifactId> <version>${version.jackson}</version> </dependency> <!-- Servlet Api --> <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>2.5</version> <scope>provided</scope> </dependency> <dependency> <groupId>javax.servlet.jsp</groupId> <artifactId>jsp-api</artifactId> <version>2.1</version> <scope>provided</scope> </dependency> <dependency> <groupId>jstl</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <!--  --> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.17</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>1.7.5</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> <version>1.7.5</version> </dependency> <!-- TEST --> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.11</version> <scope>test</scope> </dependency> <!-- Apache Commons,       -  .    . --> <dependency> <groupId>commons-io</groupId> <artifactId>commons-io</artifactId> <version>2.4</version> </dependency> <dependency> <groupId>commons-lang</groupId> <artifactId>commons-lang</artifactId> <version>2.6</version> </dependency> <dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>1.3.1</version> </dependency> </dependencies> <build> <plugins> <plugin> <artifactId>maven-war-plugin</artifactId> <version>2.4</version> <configuration> <webXml>src/main/webapp/WEB-INF/web.xml</webXml> </configuration> </plugin> </plugins> </build> </project> 

 <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/beans http://www.springframework.org/schema/beans/spring-beans.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.xsd"> <!--     @Service, @Controller, @Repository... --> <context:annotation-config/> <!--  Spring ,      ,   @Service, @Repository,    ,     @Controller, ..        . --> <context:component-scan base-package="ru.habrahabr.sm"> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/> </context:component-scan> <!--  properties    Spring (.. ).        ${mongo.host} ( . ) --> <context:property-placeholder location="classpath:database.properties"/> <!--   'mongo' --> <mongo:mongo host="${mongo.host}" port="${mongo.port}"/> <!--   'mongoDbFactory'.  MongoDB   ,   username, password   --> <mongo:db-factory username="${mongo.username}" password="${mongo.password}" dbname="${mongo.db}" mongo-ref="mongo"/> <bean id="mongoTemplate" class="org.springframework.data.mongodb.core.MongoTemplate"> <constructor-arg name="mongoDbFactory" ref="mongoDbFactory"/> </bean> </beans> 

 <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:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd"> <!--  MVC  --> <mvc:annotation-driven/> <!--  MVC Resources  ,     webapp/resources/    : localhost/resources/ --> <mvc:resources mapping="/resources/**" location="/resources/"/> <!--  Spring MVC   - --> <context:component-scan base-package="ru.habrahabr.sm"> <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" /> </context:component-scan> <!--  Spring MVC     View,     "/WEB-INF/pages/" --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/pages/"/> <property name="suffix" value=".jsp"/> </bean> </beans> 

 mongo.host=localhost mongo.port=27017 mongo.db=mydb mongo.username=username mongo.password=password 

 log4j.rootLogger=INFO, stdout # Direct log messages to stdout log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.target=System.out log4j.appender.stdout.layout=org.apache.log4j.PatternLayout log4j.appender.stdout.layout.conversionPattern=%d{dd.MM.yy HH:mm:ss} %5p - %m%n log4j.appender.stdout.encoding=UTF-8 

 <web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"> <!-- Spring Application Context --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring/applicationContext.xml</param-value> </context-param> <listener> <listener-class> org.springframework.web.context.ContextLoaderListener </listener-class> </listener> <!-- /Spring Application Context --> <!-- Spring Dispatcher Servlet Context --> <servlet> <servlet-name>dispatcher</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring/dispatcherServlet.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>dispatcher</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <!-- /Spring Dispatcher Servlet Context --> <!-- Filters --> <!-- Character Filter --> <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> <!-- /Character Filter --> <!-- /Filters --> </web-app> 

 package ru.habrahabr.sm.model; import org.springframework.data.annotation.Id; import org.springframework.data.mongodb.core.mapping.Document; /** * Date: 26.03.2014 * Time: 15:38 * * @author Ruslan Molchanov (ruslanys@gmail.com) */ @Document(collection = Sequence.COLLECTION_NAME) public class Sequence { public static final String COLLECTION_NAME = "sequences"; @Id private String id; private Long sequence; public Sequence() { } public String getId() { return id; } public void setId(String id) { this.id = id; } public Long getSequence() { return sequence; } public void setSequence(Long sequence) { this.sequence = sequence; } } 

 package ru.habrahabr.sm.dao; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.data.mongodb.core.FindAndModifyOptions; import org.springframework.data.mongodb.core.MongoOperations; 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.Repository; import ru.habrahabr.sm.exceptions.SequenceException; import ru.habrahabr.sm.model.Sequence; /** *      www.mkyong.com * http://mkyong.com/mongodb/spring-data-mongodb-auto-sequence-id-example/ */ @Repository public class SequenceDao { @Autowired private MongoOperations mongoOperations; public Long getNextSequenceId(String key) { //   Sequence    Query query = new Query(Criteria.where("id").is(key)); //   sequence   Update update = new Update(); update.inc("sequence", 1); //  ,      FindAndModifyOptions options = new FindAndModifyOptions(); options.returnNew(true); //   :) Sequence sequence = mongoOperations.findAndModify(query, update, options, Sequence.class); // if no sequence throws SequenceException if(sequence == null) throw new SequenceException("Unable to get sequence for key: " + key); return sequence.getSequence(); } } 

 package ru.habrahabr.sm.exceptions; /** * Date: 26.03.2014 * Time: 16:09 * * @author Ruslan Molchanov (ruslanys@gmail.com) */ public class SequenceException extends RuntimeException { public SequenceException(String message) { super(message); } } 

 package ru.habrahabr.sm.model; import org.springframework.data.annotation.Id; import org.springframework.data.mongodb.core.mapping.Document; import java.io.Serializable; /** * Date: 26.03.2014 * Time: 15:29 * * @author Ruslan Molchanov (ruslanys@gmail.com) */ @Document(collection = Contact.COLLECTION_NAME) public class Contact implements Serializable { public static final String COLLECTION_NAME = "contacts"; @Id private Long id; /* *******************************************************   ,  ID     (     ),    ID : @Id private String id; ********************************************************* */ private String name; private String number; private String email; public Contact() { } public Contact(String name, String number, String email) { this.name = name; this.number = number; this.email = email; } public Long getId() { return id; } public void setId(Long id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getNumber() { return number; } public void setNumber(String number) { this.number = number; } public String getEmail() { return email; } public void setEmail(String email) { this.email = email; } } 

 package ru.habrahabr.sm.dao; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.data.mongodb.core.MongoOperations; import org.springframework.data.mongodb.core.query.Criteria; import org.springframework.data.mongodb.core.query.Query; import org.springframework.stereotype.Repository; import ru.habrahabr.sm.model.Contact; import java.util.List; /** * Date: 26.03.2014 * Time: 19:13 * * @author Ruslan Molchanov (ruslanys@gmail.com) */ @Repository public class ContactDao { @Autowired private MongoOperations mongoOperations; public void save(Contact contact) { mongoOperations.save(contact); } public Contact get(Long id) { return mongoOperations.findOne(Query.query(Criteria.where("id").is(id)), Contact.class); } public List<Contact> getAll() { return mongoOperations.findAll(Contact.class); } public void remove(Long id) { mongoOperations.remove(Query.query(Criteria.where("id").is(id)), Contact.class); } } 

 package ru.habrahabr.sm.services; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import ru.habrahabr.sm.dao.ContactDao; import ru.habrahabr.sm.dao.SequenceDao; import ru.habrahabr.sm.model.Contact; import java.util.List; /** * Date: 26.03.2014 * Time: 20:09 * * @author Ruslan Molchanov (ruslanys@gmail.com) */ @Service public class ContactService { @Autowired private SequenceDao sequenceDao; @Autowired private ContactDao contactDao; public void add(Contact contact) { contact.setId(sequenceDao.getNextSequenceId(Contact.COLLECTION_NAME)); contactDao.save(contact); } public void update(Contact contact) { contactDao.save(contact); } public Contact get(Long id) { return contactDao.get(id); } public List<Contact> getAll() { return contactDao.getAll(); } public void remove(Long id) { contactDao.remove(id); } } 

 package ru.habrahabr.sm.web; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; 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 org.springframework.web.servlet.ModelAndView; import ru.habrahabr.sm.model.Contact; import ru.habrahabr.sm.services.ContactService; /** * Date: 26.03.2014 * Time: 20:30 * * @author Ruslan Molchanov (ruslanys@gmail.com) */ @Controller public class MainController { @Autowired private ContactService contactService; @RequestMapping(value = "/", method = RequestMethod.GET) public ModelAndView showAll() { ModelAndView modelAndView = new ModelAndView("all"); modelAndView.addObject("contacts", contactService.getAll()); return modelAndView; } @RequestMapping(value = "/add", method = RequestMethod.GET) public ModelAndView showAddForm() { return new ModelAndView("add_form", "contact", new Contact()); } @RequestMapping(value = "/add", method = RequestMethod.POST) public String addContact(@ModelAttribute("contact") Contact contact) { if(contact.getId() == null) contactService.add(contact); else contactService.update(contact); return "redirect:/"; } @RequestMapping(value = "/edit", method = RequestMethod.GET) public ModelAndView showEditForm(@RequestParam(required = true) Long id) { return new ModelAndView("add_form", "contact", contactService.get(id)); } @RequestMapping(value = "/delete", method = RequestMethod.GET) public String deleteContact(@RequestParam(required = true) Long id) { contactService.remove(id); return "redirect:/"; } } 

 <%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title> </title> </head> <body> <form:form method="POST" action="/add" modelAttribute="contact"> <form:hidden path="id" /> <table> <tr> <td>Name:</td> <td><form:input path="name" /></td> </tr> <tr> <td>Number:</td> <td><form:input path="number" /></td> </tr> <tr> <td>E-mail:</td> <td><form:input path="email" /></td> </tr> <tr> <td colspan="2"> <input type="submit" /> </td> </tr> </table> </form:form> </body> </html> 

 <%@ page contentType="text/html;charset=UTF-8" language="java" %> <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <html> <head> <title> </title> </head> <body> <table width="600px"> <tr> <td><b>ID</b></td> <td><b>Name</b></td> <td><b>Number</b></td> <td><b>E-mail</b></td> <td><b>Action</b></td> </tr> <c:forEach var="contact" items="${contacts}"> <tr> <td>${contact.id}</td> <td>${contact.name}</td> <td>${contact.number}</td> <td>${contact.email}</td> <td><a href="/edit?id=${contact.id}">Edit</a> | <a href="/delete?id=${contact.id}">Delete</a></td> </tr> </c:forEach> <tr> <td colspan="5"> <a href="/add"> </a> </td> </tr> </table> </body> </html>