使用SpringBoot操作MongoDB

• pom.xml

  <dependencies>
      <dependency>
          <groupId>org.springframework.boot</groupId>
          <artifactId>spring-boot-starter-data-mongodb</artifactId>
      </dependency>
      <dependency>
          <groupId>org.springframework.boot</groupId>
          <artifactId>spring-boot-starter-web</artifactId>
      </dependency>
  
      <dependency>
          <groupId>org.projectlombok</groupId>
          <artifactId>lombok</artifactId>
          <optional>true</optional>
      </dependency>
      <dependency>
          <groupId>org.springframework.boot</groupId>
          <artifactId>spring-boot-starter-test</artifactId>
          <scope>test</scope>
          <exclusions>
              <exclusion>
                  <groupId>org.junit.vintage</groupId>
                  <artifactId>junit-vintage-engine</artifactId>
              </exclusion>
          </exclusions>
      </dependency>
  </dependencies>
  

• application.yml

  spring:
    data:
      mongodb:
        host: 192.168.126.154
        database: studentdb
  

• Student.java

  package com.yrkedu.springboot_mongodb.pojo;
  
  import lombok.Data;
  
  @Data
  public class Student {
  
      private String id;
  
      private String content;
  
      private String name;
  
      private String userId;
  
      private Integer visits;
  }
  

• StudentDao.java

  package com.yrkedu.springboot_mongodb.dao;
  
  import com.yrkedu.springboot_mongodb.pojo.Student;
  
  import java.util.List;
  
  public interface StudentDao {
  
      void save(Student student);
  
      void update(Student student);
  
      List<Student> findAlll();
  
      void delete(String id);
  }
  

• StudentDaoImpl.java

  package com.yrkedu.springboot_mongodb.dao.impl;
  
  import com.yrkedu.springboot_mongodb.dao.StudentDao;
  import com.yrkedu.springboot_mongodb.pojo.Student;
  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.stereotype.Component;
  
  import java.util.List;
  
  @Component
  public class StudentDaoImpl implements StudentDao {
  
      @Autowired
      private MongoTemplate mongoTemplate;
  
  
      @Override
      public void save(Student student) {
          mongoTemplate.save(student);
      }
  
      @Override
      public void update(Student student) {
  
          //条件
          Query query = new Query(Criteria.where("_id").is(student.getId()));
  
          //修改的内容
          Update update = new Update();
          update.set("content",student.getContent());
          update.set("userid",student.getUserId());
          update.set("name",student.getName());
          update.set("visits",student.getVisits());
  
          mongoTemplate.updateFirst(query,update,Student.class);
      }
  
      @Override
      public List<Student> findAlll() {
          return mongoTemplate.findAll(Student.class);
      }
  
      @Override
      public void delete(String id) {
          Student student = mongoTemplate.findById(id, Student.class);
          mongoTemplate.remove(student);
      }
  }
  

• StudentController.java

  package com.yrkedu.springboot_mongodb.controller;
  
  import com.yrkedu.springboot_mongodb.dao.StudentDao;
  import com.yrkedu.springboot_mongodb.pojo.Student;
  import org.springframework.beans.factory.annotation.Autowired;
  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;
  
  @RestController
  public class StudentController {
  
      @Autowired
      private StudentDao studentDao;
  
      @PostMapping("/save")
      public String save(Student student) {
          try {
              studentDao.save(student);
              return "1";
          } catch (Exception e) {
              e.printStackTrace();
              return "0";
          }
      }
  
      @PutMapping("/update")
      public String update(Student student) {
          studentDao.update(student);
          return "1";
      }
  
      @GetMapping("/findAll")
      public List<Student> findAlll() {
          return studentDao.findAlll();
      }
  
      @DeleteMapping("/delete")
      public String delete(String id) {
          studentDao.delete(id);
          return "1";
      }
  }
  

使用SpringData-JPA操作MongoDB

https://blog.csdn.net/feinifi/article/details/83024898

来源：CSDN

作者：铝合金直男

链接：https://blog.csdn.net/yrj520bd/article/details/103749392