springBoot整合MongoDB（单机）

依赖：

        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-data-mongodb -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-mongodb</artifactId>
        </dependency>

配置

application.properties:

#spring.data.mongodb.uri=mongodb://localhost:27017/sea
spring.data.mongodb.uri=mongodb://用户名:密码@localhost:27017/sea

或者：

#spring.data.mongodb.uri=mongodb://userName:password@ip:port/database
spring.data.mongodb.database=ELSA_MILESTONE_SUBSCRIPTION_SERVICE
spring.data.mongodb.host=localhost
spring.data.mongodb.port=27017
#spring.data.mongodb.username=mongodb
#spring.data.mongodb.password=root

方式:1： 使用

@Autowired
private MongoTemplate mongoTemplate;

eg:

package com.icil.dao;

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.Repository;

import com.icil.domain.UserEntity;
@Repository
public class UserDAO {

      @Autowired
        private MongoTemplate mongoTemplate;

        /**
         * 创建对象
         * @param user
         */
        public void saveUser(UserEntity user) {
            mongoTemplate.save(user);
        }

        /**
         * 根据用户名查询对象
         * @param userName
         * @return
         */
        public UserEntity findUserByUserName(String userName) {
            Query query=new Query(Criteria.where("userName").is(userName));
            UserEntity user =  mongoTemplate.findOne(query , UserEntity.class);
            return user;
        }

        /**
         * 更新对象
         * @param user
         */
        public void updateUser(UserEntity user) {
            Query query=new Query(Criteria.where("id").is(user.getId()));
            Update update= new Update().set("userName", user.getUserName()).set("passWord", user.getPassWord());
            //更新查询返回结果集的第一条
            mongoTemplate.updateFirst(query,update,UserEntity.class);
            //更新查询返回结果集的所有
            // mongoTemplate.updateMulti(query,update,UserEntity.class);
        }

        /**
         * 删除对象
         * @param id
         */
        public void deleteUserById(Long id) {
            Query query=new Query(Criteria.where("id").is(id));
            mongoTemplate.remove(query,UserEntity.class);
        }

}

高频使用: 多条件 动态 (类似mybtis)

     @Autowired
    private  MongoTemplate mongoTemplate;
     @Test
    public void testNameQuery() throws Exception {
         //collectionName  -->
         Criteria criteria1 = Criteria.where("collName").is("lzd_work_table_collection");
         Criteria criteria2 = Criteria.where("status").is("RCS");

         Query query = new Query();
         query.addCriteria(criteria1);
         query.addCriteria(criteria2);
         System.err.println(query);
//         Query query=new Query(Criteria.where("status").is("RSC"));
//         public <T> List<T> find(Query query, Class<T> entityClass, String collectionName) {
         List<MilestoneInfo> find = mongoTemplate.find(query,MilestoneInfo.class);
         System.err.println("#######################");
         System.err.println(find);
    }

方式2：extends MongoRepository

eg:

UserRepository.java

package com.sea.test.repository;

import java.util.List;

import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Pageable;
import org.springframework.data.mongodb.repository.MongoRepository;
import org.springframework.data.mongodb.repository.Query;

import com.sea.test.pojo.User;

public interface UserRepository extends MongoRepository<User, Long> {

    /**
     * Like（模糊查询）
     * {"username" : name} ( name as regex)
     * */
    List<User> findByUsernameLike(String username);

    List<User> findByUsernameLike(String username,PageRequest pageable);

    /**
     * Like（模糊查询）
     * {"username" : name}
     * */
    List<User> findByUsername(String username);

    /**
     * GreaterThan(大于)
     * {"age" : {"$gt" : age}}
     * */
    List<User> findByAgeGreaterThan(int age);
    /**
     * LessThan（小于）
     * {"age" : {"$lt" : age}}
     * */
    List<User> findByAgeLessThan(int age);
    /**
     * Between（在...之间）
     * {{"age" : {"$gt" : from, "$lt" : to}}
     * */
    List<User> findByAgeBetween(int from, int to);

    /**
     * IsNotNull, NotNull（是否非空）
     *  {"username" : {"$ne" : null}}
     * */
    List<User> findByUsernameNotNull();

    /**
     * IsNull, Null（是否为空）
     *   {"username" : null}
     * */
    List<User> findByUsernameNull();

    /**
     * Not（不包含）
     *    {"username" : {"$ne" : name}}
     * */
    List<User> findByUsernameNot(String name);

    /**
     *  Near（查询地理位置相近的）
     *  {"location" : {"$near" : [x,y]}}
     * */
     // findByLocationNear(Point point)

    /**
     * Within（在地理位置范围内的）
     *   {"location" : {"$within" : {"$center" : [ [x, y], distance]}}}
     * */
    //findByLocationWithin(Circle circle)

    /**
     *   Within（在地理位置范围内的）
     *     {"location" : {"$within" : {"$box" : [ [x1, y1], x2, y2]}}}
     * */
   // findByLocationWithin(Box box)

    /**
     *
     * @param name
     * @param age
     * @param page
     * @return
     */
    @Query("{\"username\":{\"$regex\":?0}, \"age\": ?1}")
    Page<User> findByNameAndAgeRange(String name,int age,Pageable page);

    /**
     *
     * @param name
     * @param ageFrom
     * @param ageTo
     * @param page
     * @return
     */
    @Query(value="{\"username\":{\"$regex\":?0},\"age\":{\"$gte\":?1,\"$lte\": ?2}}")
    Page<User> findByNameAndAgeRange2(String name,int ageFrom,int ageTo,Pageable page);

    @Query(value="{\"username\":{\"$regex\":?0},\"age\":{\"$gte\":?1,\"$lte\": ?2}}",fields="{\"username\" : 1, \"age\" : 1}")
    Page<User> findByNameAndAgeRange3(String name,int ageFrom,int ageTo,Pageable page);

}

User：

package com.sea.test.pojo;

import java.io.Serializable;

import org.springframework.data.annotation.Id;
import org.springframework.data.mongodb.core.mapping.Document;
import org.springframework.data.mongodb.core.mapping.Field;
import org.springframework.stereotype.Component;

import com.sea.test.annotation.AutoIncKey;
import com.sea.test.annotation.aop.SeaAnnotion;

import lombok.Getter;
import lombok.Setter;
import lombok.ToString;

@Getter
@Setter
@ToString
@Component
@Document(collection = "My_user") //指定别名
public class User implements Serializable {

    private static final long serialVersionUID = -1L;

    @Id  //指定id
    @AutoIncKey //自定义注解
    private Long id;

    @Field("userName") //指定匹配关系
    private String username;

    private Integer age;

    @SeaAnnotion()
    public Long getId() {
        return id;
    }

    @SeaAnnotion()
    public void setId(Long id) {
        this.id = id;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public Integer getAge() {
        return age;
    }

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

    public User() {
        super();
    }

    public User(Long id, String username) {
        super();
        this.id = id;
        this.username = username;
    }

    public User(Long id, String username, Integer age) {
        super();
        this.id = id;
        this.username = username;
        this.age = age;
    }

    @Override
    public String toString() {
        return "User [id=" + id + ", username=" + username + ", age=" + age + "]";
    }

}

controller : 参考https://blog.csdn.net/weixin_39214304/article/details/84791953

package com.sea.test.controller;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Example;
import org.springframework.data.domain.ExampleMatcher;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Sort;
import org.springframework.data.domain.Sort.Direction;
import org.springframework.data.domain.Sort.Order;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseStatus;
import org.springframework.web.bind.annotation.RestController;

import com.sea.test.pojo.User;
import com.sea.test.repository.UserRepository;

@RestController
@RequestMapping("/user")
public class UserController {
    @Autowired
    private UserRepository userRepository;

    @ResponseStatus(HttpStatus.CREATED)
    @PostMapping(consumes = MediaType.APPLICATION_JSON_VALUE)
    public User createUser(@RequestBody User user) {
        return userRepository.save(user);
    }

    /**
     * 根据id查询
     *
     * @param id
     * @return
     */
    @GetMapping(value = "/{id}")
    public User readUserById(@PathVariable("id") Long id) {
        return userRepository.findById(id).get();
    }

    @GetMapping(value = "/all")
    public List<User> getAll() {
        System.err.println("### enter into getall emthod ###");
        return userRepository.findAll();
    }

    /**
     * 根据一个或者多个属性查询单个结果
     *
     * @param name
     * @return
     */
    @GetMapping(value = "/name/{name}")
    public User readUserByName(@PathVariable("name") String name) {
        User user = new User();
        user.setUsername(name);
        ExampleMatcher matcher = ExampleMatcher.matching().withIgnorePaths("age", "createTime");
        Example<User> example = Example.of(user, matcher);
        return userRepository.findOne(example).get();
    }

    /**
     * 根据一个或者多个属性分页查询
     *
     * @param pageNumber
     * @param pageSize
     * @return
     */
    @GetMapping(value = "/page/{pageNumber}/pagesize/{pageSize}/name/{name}")
    public Page<User> readUsersByPage(@PathVariable("pageNumber") int pageNumber,
            @PathVariable("pageSize") int pageSize, @PathVariable("name") String name) {
        User user = new User();
        user.setUsername(name);
        ExampleMatcher matcher = ExampleMatcher.matching().withIgnorePaths("age", "createTime");
        Example<User> example = Example.of(user, matcher);
        if (pageNumber < ) {
            pageNumber = ;
        } else if (pageSize == ) {
            pageSize = ;
        }
        PageRequest pageable =  PageRequest.of(pageNumber - , pageSize);
        return userRepository.findAll(example, pageable);
    }

    /**
     * 根据用户年龄升序排序
     *
     * @return
     */
    @GetMapping("/get")
    public List<User> readUsers() {
        System.err.println("### enter into readUser emthod ###");
        Order order = new Order(Direction.ASC, "age");
        Sort sort = Sort.by(order);
        return userRepository.findAll(sort);
    }

    /**
     * 模糊查询带分页
     *
     * @param pageNumber
     * @param pageSize
     * @param keyWords
     * @return
     */
    @GetMapping(value = "/page/{pageNumber}/pagesize/{pageSize}/keyword/{keyWords}")
    public Page<User> readUsersByKeywords(@PathVariable("pageNumber") int pageNumber,
            @PathVariable("pageSize") int pageSize, @PathVariable("keyWords") String keyWords) {
        if (keyWords == null) {
            keyWords = "";
        }
        if (pageNumber < ) {
            pageNumber = ;
        } else if (pageSize == ) {
            pageSize = ;
        }
        PageRequest pageable = PageRequest.of(pageNumber - , pageSize);
        return (Page<User>) userRepository.findByUsernameLike(keyWords, pageable);
    }

    @ResponseStatus(HttpStatus.OK)
    @DeleteMapping(value = "/{id}")
    public void removeUser(@PathVariable("id") Long id) {
        userRepository.deleteById(id);
    }
}