SpringBoot之整合MongoDB

MongoDB官網安裝:
https://www.mongodb.com/download-center/community

MongoDB客戶端工具(Mongo Management Studio)安裝:
http://mms.litixsoft.de/#software_pricing

一、添加Maven依賴

<!--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、代碼中使用Mongo

1.Mongo適用場景

(1)可用於動態列;
(2)可用於配置方面(如一些系統配置);
(3)日志記錄;
(4)用於博客開發中的評論或留言;
(5)物聯網方面的門鎖相關信息存儲;
(6)探頭;

上面六個場景是我之前開發使用過的。

當然了，Mongo還可以應用更多地方，關鍵在於應用的場景是否合適。

2.以我最近博客開發的一個聯系我為例(這里我使用Mongo)

(1)建立數據模型(需要在Mongo對應的庫，建立對應的集合)

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;

/**
 * 聯系我-數據模型
 */
@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)數據訪問層

package com.springcloud.blog.admin.mongo.dao;

import com.springcloud.blog.admin.mongo.entity.ContactMe;
        import org.springframework.data.mongodb.repository.MongoRepository;

/**
 * 聯系我-持久層
 */
public interface ContactMeRepository extends MongoRepository<ContactMe, String> {
}

(3)對外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;

/**
 * 聯系我(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;
    }
}

簡單的說就是一個非常簡單的增刪改查，可幫助入門。
同時一般情況下，還是需要業務邏輯層的，一方面為了復用考慮，另外一方面不同的業務辦不同的事情。