MongoDB官网安装:
https://www.mongodb.com/download-center/community
MongoDB客户端工具(Mongo Management Studio)安装:
http://mms.litixsoft.de/#software_pricing
一、添加Maven依赖
<!--mongodb--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-mongodb</artifactId> </dependency>
二、application.yml配置
spring: data: mongodb: host: 127.0.0.1 port: 27017 database: blog
三、代码中使用Mongo
1.Mongo适用场景
(1)可用于动态列;
(2)可用于配置方面(如一些系统配置);
(3)日志记录;
(4)用于博客开发中的评论或留言;
(5)物联网方面的门锁相关信息存储;
(6)探头;
上面六个场景是我之前开发使用过的。
当然了,Mongo还可以应用更多地方,关键在于应用的场景是否合适。
2.以我最近博客开发的一个联系我为例(这里我使用Mongo)
(1)建立数据模型(需要在Mongo对应的库,建立对应的集合)
package com.springcloud.blog.admin.mongo.entity; import com.springcloud.blog.admin.common.base.BaseDTO; import org.springframework.data.mongodb.core.mapping.Document; import org.springframework.data.mongodb.core.mapping.Field; /** * 联系我-数据模型 */ @Document(collection = "contact_me") public class ContactMe extends BaseDTO { @Field private String name; @Field private String email; @Field private String content; public String getName() { return name; } public void setName(String name) { this.name = name; } public String getEmail() { return email; } public void setEmail(String email) { this.email = email; } public String getContent() { return content; } public void setContent(String content) { this.content = content; } }
(2)数据访问层
package com.springcloud.blog.admin.mongo.dao; import com.springcloud.blog.admin.mongo.entity.ContactMe; import org.springframework.data.mongodb.repository.MongoRepository; /** * 联系我-持久层 */ public interface ContactMeRepository extends MongoRepository<ContactMe, String> { }
(3)对外API
package com.springcloud.blog.admin.mongo.controller; import com.alibaba.fastjson.JSONObject; import com.springcloud.blog.admin.common.dict.ResponseDict; import com.springcloud.blog.admin.mongo.dao.ContactMeRepository; import com.springcloud.blog.admin.mongo.entity.ContactMe; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.PostMapping; import org.springframework.web.bind.annotation.RequestBody; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; import java.util.List; /** * 联系我(Mongo Example) */ @RestController @RequestMapping("/contactMe") public class ContactMeController { @Autowired private ContactMeRepository contactMeRepository; @PostMapping("/save") public JSONObject save(@RequestBody ContactMe contactMe) { JSONObject jsonObject = new JSONObject(); contactMeRepository.save(contactMe); jsonObject.put(ResponseDict.RESPONSE_CODE_KEY, ResponseDict.RESPONSE_SUCCESS_CODE); jsonObject.put(ResponseDict.RESPONSE_MSG_KEY, ResponseDict.RESPONSE_SUCCESS_MSG); return jsonObject; } @PostMapping("/delete") public JSONObject delete(@RequestBody ContactMe contactMe) { JSONObject jsonObject = new JSONObject(); contactMeRepository.delete(contactMe); jsonObject.put(ResponseDict.RESPONSE_CODE_KEY, ResponseDict.RESPONSE_SUCCESS_CODE); jsonObject.put(ResponseDict.RESPONSE_MSG_KEY, ResponseDict.RESPONSE_SUCCESS_MSG); return jsonObject; } @PostMapping("/update") public JSONObject update(@RequestBody ContactMe contactMe) { JSONObject jsonObject = new JSONObject(); contactMeRepository.save(contactMe); jsonObject.put(ResponseDict.RESPONSE_CODE_KEY, ResponseDict.RESPONSE_SUCCESS_CODE); jsonObject.put(ResponseDict.RESPONSE_MSG_KEY, ResponseDict.RESPONSE_SUCCESS_MSG); return jsonObject; } @PostMapping("/getAll") public JSONObject getAll() { JSONObject jsonObject = new JSONObject(); List<ContactMe> list = contactMeRepository.findAll(); jsonObject.put(ResponseDict.RESPONSE_CODE_KEY, ResponseDict.RESPONSE_SUCCESS_CODE); jsonObject.put(ResponseDict.RESPONSE_MSG_KEY, ResponseDict.RESPONSE_SUCCESS_MSG); jsonObject.put(ResponseDict.RESPONSE_DATA_KEY, list); return jsonObject; } }
简单的说就是一个非常简单的增删改查,可帮助入门。
同时一般情况下,还是需要业务逻辑层的,一方面为了复用考虑,另外一方面不同的业务办不同的事情。
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