本文展示了如何通過注釋配置將MongoDB集成到您的spring項目中。

我們將從Gradle配置開始。

group 'com.gkatzioura.spring' version '1.0-SNAPSHOT'buildscript {repositories {mavenCentral()}dependencies {classpath("org.springframework.boot:spring-boot-gradle-plugin:1.2.7.RELEASE")} }apply plugin: 'java' apply plugin: 'eclipse' apply plugin: 'idea' apply plugin: 'spring-boot'jar {baseName = 'mdb-spring-boot'version = '0.1.0' }repositories {mavenCentral() }sourceCompatibility = 1.8 targetCompatibility = 1.8dependencies {compile("org.springframework.boot:spring-boot-starter-web")compile('com.googlecode.json-simple:json-simple:1.1.1')compile("org.springframework.boot:spring-boot-starter-actuator")compile("org.springframework.data:spring-data-mongodb:1.8.0.RELEASE")compile("ch.qos.logback:logback-classic:1.1.3")compile("ch.qos.logback:logback-core:1.1.3")compile("org.json:json:20150729")compile("com.google.code.gson:gson:2.4")compile("org.slf4j:slf4j-api:1.7.12")testCompile("junit:junit")testCompile('org.springframework.boot:spring-boot-starter-test') }task wrapper(type: Wrapper) {gradleVersion = '2.3' }

我們將使用spring注釋繼續進行MongoDB配置。

package com.gkatzioura.spring.config;import com.mongodb.MongoClient; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.data.mongodb.MongoDbFactory; import org.springframework.data.mongodb.core.MongoTemplate; import org.springframework.data.mongodb.core.SimpleMongoDbFactory;import java.net.UnknownHostException;/*** Created by oSeven3 on 21/10/2015.*/ @Configuration public class MongoDbConfiguration {public @Bean MongoDbFactory getMongoDbFactory() throws UnknownHostException {return new SimpleMongoDbFactory(new MongoClient("localhost",27017),"mongotest");}public @Bean(name = "mongoTemplate") MongoTemplate getMongoTemplate() throws UnknownHostException {MongoTemplate mongoTemplate = new MongoTemplate(getMongoDbFactory());return mongoTemplate;}}

接下來，我們將定義模型。 我們將創建位置模型，其中將包含緯度經度。

package com.gkatzioura.spring.persistence.entities;import org.springframework.data.annotation.Id; import org.springframework.data.mongodb.core.mapping.Document;import java.math.BigDecimal; import java.util.Date; import java.util.UUID;@Document(collection = "location") public class Location {@Idprivate String id;private BigDecimal latitude;private BigDecimal longitude;private Date timestamp;public String getId() {return id;}public void setId(String id) {this.id = id;}public BigDecimal getLatitude() {return latitude;}public void setLatitude(BigDecimal latitude) {this.latitude = latitude;}public BigDecimal getLongitude() {return longitude;}public void setLongitude(BigDecimal longitude) {this.longitude = longitude;}public Date getTimestamp() {return timestamp;}public void setTimestamp(Date timestamp) {this.timestamp = timestamp;} }

然后我們將創建我們的存儲庫

package com.gkatzioura.spring.persistence.repositories;import com.gkatzioura.spring.persistence.entities.Location; import org.springframework.data.repository.CrudRepository;import java.util.UUID;public interface LocationRepository extends CrudRepository<Location,String> { }

然后我們將定義我們的控制器

package com.gkatzioura.spring.controller;import com.gkatzioura.spring.persistence.entities.Location; import com.gkatzioura.spring.persistence.repositories.LocationRepository; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.*;import java.util.ArrayList; import java.util.List;import java.io.IOException;/*** Created by oSeven3 on 21/10/2015.*/@RestController @RequestMapping("/location") public class LocationController {@Autowiredprivate LocationRepository locationRepository;private static final Logger LOGGER = LoggerFactory.getLogger(LocationRepository.class);@RequestMapping(value = "/",method = RequestMethod.POST)@ResponseBodypublic String post(@RequestBody Location location) {locationRepository.save(location);return "OK";}@RequestMapping(value = "/",method = RequestMethod.GET)@ResponseBodypublic List<Location> get() {List<Location> locations = new ArrayList<>();locationRepository.findAll().forEach(l->locations.add(l));return locations;}}

最后但并非最不重要的是我們的Application類

package com.gkatzioura.spring;import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication;/*** Created by gkatziourasemmanouil on 8/15/15.*/ @SpringBootApplication public class Application {public static void main(String[] args) {SpringApplication.run(Application.class, args);}}

為了跑就跑

gradle bootRun

翻譯自: https://www.javacodegeeks.com/2015/11/integrate-mongodb-to-your-spring-project.html

總結

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