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