springboot整合mongodb并实现crud步骤详解

<!--mybatis-->
<dependency>
    <groupId>org.mybatis.spring.boot</groupId>
    <artifactId>mybatis-spring-boot-starter</artifactId>
    <version>1.3.2</version>
</dependency>
<!--mongodb-->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/org.mongodb/mongo-java-driver -->
<dependency>
    <groupId>org.mongodb</groupId>
    <artifactId>mongo-java-driver</artifactId>
    <version>3.12.7</version>
</dependency>
<!--druid数据源-->
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>druid</artifactId>
</dependency>

spring:
  data:
    mongodb:
      #uri:  mongodb://localhost:27017/test
      host: 127.0.0.1
      port: 27017
      username:
      password:
      database: test
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource #druid数据源
mybatis:
  type-aliases-package: com.mjs.common.pojo  #这里是实体类所在的包
  mapper-locations: classpath:/mapper/*.xml  #这里是放sql语句的映射文件

/**
 * @description 启动类
 * @author shenwang
 * @version 1.0
 * @date 2021/8/20 10:37
 */
@SpringBootApplication(exclude= {DataSourceAutoConfiguration.class})
@MapperScan(basePackages = "com.mjs.dao")
public class MJSagentApplication {
    public static void main(String[] args) {
        SpringApplication.run(MJSagentApplication.class,args);
    }
}

@Autowired
private MongoTemplate mongoTemplate;

/**
 * 添加学生
 * @param student
 */
public boolean insert(Student student){
    Student stu = mongoTemplate.save(student);
    return stu!=null;
}

/**
 * 根据学生姓名删除学生
 * @param name
 * @return
 */
public boolean deleteByName(String name){
    //添加约束
    Query query =new Query(Criteria.where("name").is(name));
    //根据条件删除学生，并返回结果
    DeleteResult result = mongoTemplate.remove(query, Student.class);
    return result.getDeletedCount()>0;
}

/**
 * 根据ID修改学生信息
 * @param student
 * @return
 */
public boolean updateStu(Student student){
    //添加约束
    Query query =new Query(Criteria.where("id").is(student.getId()));
    //设置要修改的值
    Update update=new Update();
    update.set("age",student.getAge());
    update.set("sex",student.getAge());
    //修改并返回结果
    UpdateResult updateResult = mongoTemplate.updateFirst(query, update, Student.class);
    return updateResult.getMatchedCount()>0;
}

/**
 * 获取所有学生
 * @return
 */
public List<Student> findAll(){
    return mongoTemplate.findAll(Student.class);
}

/**
 * 根据学生名称查询学生列表
 * @param name
 * @return
 */
public List<Student> findByName(String name){
    //添加约束
    Query query=new Query(Criteria.where("name").is(name));
    //返回结果
    return mongoTemplate.find(query,Student.class);
}