spring boot集成mongodb的增删改查

添加依赖

<dependency>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>

properties配置

spring.data.mongodb.host=127.0.0.1
spring.data.mongodb.port=27017
spring.data.mongodb.database=enterprise_dc_db
spring.data.mongodb.username=enterprise_dc_dba
spring.data.mongodb.password=123456

server.port=8081

创建实体类

@Document为mongodb集合名

package com.example.springbootmongodb.domian;

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

@Document(collection = "mydb")
public class Users {
    private String userId;
    private String name;
    private Integer age;

    public String getUserId() {
        return userId;
    }

    public void setUserId(String userId) {
        this.userId = userId;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }
}

controller

package com.example.springbootmongodb.controller;

public class ResultObject {

    private int code;

    private String desc;

    private Object data;

    public ResultObject() {

    }

    public ResultObject(int code) {
        this.code = code;
    }

    public ResultObject(int code, Object data) {
        this.code = code;
        this.data = data;
    }

    public Object getData() {
        return data;
    }

    public void setData(Object data) {
        this.data = data;
    }

    public int getCode() {
        return code;
    }

    public void setCode(int code) {
        this.code = code;
    }

    public String getDesc() {
        return desc;
    }

    public void setDesc(String desc) {
        this.desc = desc;
    }
}

package com.example.springbootmongodb.controller;

import com.example.springbootmongodb.domian.Users;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.mongodb.core.MongoTemplate;
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.web.bind.annotation.*;

import java.util.List;

@RequestMapping("/mongo")
@RestController
public class UserController {

    @Autowired
    private MongoTemplate mongoTemplate;

    @RequestMapping(value = "/hello",method = RequestMethod.GET)
    public String hello(){
        return "hello";
    }

    /**
     * 新增
     */
    @ResponseBody
    @RequestMapping(value = "/insert", method = RequestMethod.GET)
    public ResultObject insert(){
        Users user = new Users();
        user.setUserId("1002");
        user.setName("eric");
        user.setAge(18);
        mongoTemplate.insert(user);
    return new ResultObject(200);
    }

    /**删除
     *
     * @return
     */
    @ResponseBody
    @RequestMapping("/delete")
    public ResultObject delete(){
        Query query = Query.query(Criteria.where("userId").is("1001"));
        mongoTemplate.remove(query,"mydb");
        return new ResultObject(200);
    }

    /**
     * 删除
     * @return
     */
    @ResponseBody
    @RequestMapping("/update")
    public ResultObject update(){
        Query query = Query.query(Criteria.where("userId").is("1002"));
        Update update = new Update();
        update.set("name","name1");
        update.set("age",18);
        mongoTemplate.updateFirst(query,update,"mydb");
        return new ResultObject(200);
    }

    /**
     * 查询
     * @return
     */
    @ResponseBody
    @RequestMapping("/query")
    public ResultObject query(){
        Query query = Query.query(Criteria.where("userId").is("1001"));
        List<Users> list = mongoTemplate.find(query,Users.class);
        return new ResultObject(200,list);
    }
}