Springboot集成MongoDB实现CRUD

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1、添加依赖

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

2、Java代码

　　a、控制层

package com.mao2080.mongodb;

import com.mao2080.beans.User;
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 javax.servlet.http.HttpServletResponse;
import java.util.List;

@RestController
@RequestMapping("/mongodbController")
public class MongodbController {

    @Autowired
    private MongoTemplate mongoTemplate;

    /**表名*/
    private static final String collectionName = "user";

    /**
     * 描述：新增
     * @author maochengyuan
     * @created 2018/9/1 20:17
     * @param user
     * @return ResultObject
     */
    @RequestMapping(value = "/insert", method = RequestMethod.POST)
    @ResponseBody
    public ResultObject insert(@ModelAttribute User user) throws Exception {
        this.mongoTemplate.insert(user);
        return new ResultObject(HttpServletResponse.SC_OK);
    }

    /**
     * 描述：删除
     * @author maochengyuan
     * @created 2018/9/1 20:17
     * @param userId
     * @return ResultObject
     */
    @RequestMapping("/delete")
    @ResponseBody
    public ResultObject delete(@RequestParam("userId") String userId) throws Exception {
        Query query = Query.query(Criteria.where("userId").is(userId));
        this.mongoTemplate.remove(query, collectionName);
        return new ResultObject(HttpServletResponse.SC_OK);
    }

    /**
     * 描述：修改
     * @author maochengyuan
     * @created 2018/9/1 20:17
     * @param user
     * @return ResultObject
     */
    @RequestMapping(value = "/update", method = RequestMethod.POST)
    @ResponseBody
    public ResultObject update(@ModelAttribute User user) throws Exception {
        Query query = Query.query(Criteria.where("userId").is(user.getUserId()));
        Update update = new Update();
        update.set("age", user.getAge());
        update.set("name", user.getName());
        update.set("email", user.getEmail());
        this.mongoTemplate.updateFirst(query, update, collectionName);
        return new ResultObject(HttpServletResponse.SC_OK);
    }

    /**
     * 描述：查询
     * @author maochengyuan
     * @created 2018/9/1 20:17
     * @param
     * @return ResultObject
     */
    @RequestMapping("/query")
    @ResponseBody
    public ResultObject query() throws Exception {
        Query query = Query.query(Criteria.where("dataStatus").is(1));
        List<User> users = this.mongoTemplate.find(query, User.class);
        return new ResultObject(HttpServletResponse.SC_OK, users);
    }

}

　　b、实体类

package com.mao2080.beans;

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

import java.util.Date;

@Document(collection="user")
public class User {

    private String userId;

    private String name;

    private String uclass;

    private String email;

    private Date birthday;

    private int age;

    private int dataStatus;

    public User() {
    }

    public String getName() {
        return name;
    }

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

    public String getUserId() {
        return userId;
    }

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

    public String getUclass() {
        return uclass;
    }

    public void setUclass(String uclass) {
        this.uclass = uclass;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public Date getBirthday() {
        return birthday;
    }

    public void setBirthday(Date birthday) {
        this.birthday = birthday;
    }

    public int getAge() {
        return age;
    }

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

    public int getDataStatus() {
        return dataStatus;
    }

    public void setDataStatus(int dataStatus) {
        this.dataStatus = dataStatus;
    }
}

c、配置文件（application.properties）

spring.data.mongodb.host=127.0.0.1
spring.data.mongodb.port=27000
spring.data.mongodb.database=mao2080

3、操作过程

　　注意使用postman来模拟POST请求。

　　1、新增URL：http://localhost:8080/mongodbController/insert?userId=015&name=Back&uclass=B&email=b12@sina.com&age=11&dataStatus=1

　　2、删除URL：http://localhost:8080/mongodbController/delete?userId=015

　　3、修改URL：http://localhost:8080/mongodbController/update?userId=014&name=Back&uclass=B&email=b12@sina.com&age=18&dataStatus=2

　　4、查询URL：http://localhost:8080/mongodbController/query

4、代码下载

　　mongodb-demo.zip

5、参考网站

　　https://blog.csdn.net/mazhen1991/article/details/78161784