SpringBoot使用MongoDB

1.设置pom引用

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>com.itstudy</groupId>
  <artifactId>mongodemo</artifactId>
  <version>1.0-SNAPSHOT</version>

  <name>mongodemo</name>
  <url>http://www.example.com</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
  </properties>
  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter</artifactId>
    </dependency>
    <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>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-test</artifactId>
      <scope>test</scope>
    </dependency>

  </dependencies>

  <dependencyManagement>
    <dependencies>
      <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-dependencies</artifactId>
        <version>1.5.9.RELEASE</version>
        <type>pom</type>
        <scope>import</scope>
      </dependency>
    </dependencies>
  </dependencyManagement>

  <build>
    <plugins>
      <plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
        <executions>
            <execution>
                <goals>
                    <goal>repackage</goal>
                </goals>
            </execution>
        </executions>
      </plugin>
    </plugins>
  </build>
</project>

2.在main/resources文件夹，设置application.properties

#非密码链接
spring.data.mongodb.uri=mongodb://localhost:27017/mydb
#密码链接
#spring.data.mongodb.uri=mongodb://zzq:123456@localhost:27017/mydb
#集群链接
#spring.data.mongodb.uri=mongodb://user:pwd@ip1:port1,ip2:port2/database
#显示mongo语句
logging.level.org.springframework.data.mongodb.core=DEBUG

3.定义实体类

package com.itstudy.domain;

import org.springframework.data.annotation.Id;
import org.springframework.data.annotation.Transient;
import org.springframework.data.mongodb.core.index.CompoundIndex;
import org.springframework.data.mongodb.core.index.CompoundIndexes;
import org.springframework.data.mongodb.core.index.Indexed;
import org.springframework.data.mongodb.core.mapping.DBRef;
import org.springframework.data.mongodb.core.mapping.Document;
import org.springframework.data.mongodb.core.mapping.Field;

import java.util.List;

//指定存储到表
@Document(collection = "system_user")
//指定复合索引
@CompoundIndexes({
        @CompoundIndex(name = "idx_mobile_email", def = "{'mobile': 1, 'email': -1}")
})
public class User {
    //主键
    @Id
    private String id;

    //设置索引
    @Indexed(unique = true)
    private String userName;

    private String mobile;

    private String email;

    //指定字段名称
    @Field("first_name")
    private String firstName;

    //不存储到数据库
    @Transient
    private String local;

    //指定关联数据库
    @DBRef
    private List<Role> roles;


    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName;
    }

    public String getMobile() {
        return mobile;
    }

    public void setMobile(String mobile) {
        this.mobile = mobile;
    }

    public String getEmail() {
        return email;
    }

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

    public String getFirstName() {
        return firstName;
    }

    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }

    public String getLocal() {
        return local;
    }

    public void setLocal(String local) {
        this.local = local;
    }

    public List<Role> getRoles() {
        return roles;
    }

    public void setRoles(List<Role> roles) {
        this.roles = roles;
    }
}

使用springboot操作mongodb有两种方式一种是jpa 另一种是mongoTemplate ,两种各有优点，mongoTemplate更灵活一些。

4使用jpa操作数据库

4.1定义repository

package com.itstudy.dao;

import com.itstudy.domain.User;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.data.mongodb.repository.MongoRepository;
import org.springframework.data.mongodb.repository.Query;
import org.springframework.stereotype.Repository;
import org.springframework.data.domain.Sort;

import java.util.Date;
import java.util.List;

@Repository
public interface UserRepository extends MongoRepository<User, String> {

    List<User> findByUserNameLike(String userName);

     /**
     * 排序查询
     *
     * 使用示例 userRepository.findAll(new Sort(new Sort.Order(Sort.Direction.DESC, "userName")));
     * 如果定义findAllOrderByUserName() 会报错(Invalid parameter index! You seem to have declare too little query method parameters!)
     * @return
     */
    List<User> findAll(Sort sort);
    /**
     * 分页查询
     *
     * @param userName
     * @param pageable
     * @return
     */
    Page<User> queryByUserNameLike(String userName, Pageable pageable);

    /**
     * 分页查询
     *
     * @param userName
     * @param beginTime
     * @param endTime
     * @param pageable
     * @return
     */
    @Query(value = "{"userName":{"$regex":?0,"$options":"i"},"gmtCreate":{"$gt":?1,"$lt":?2}}")
    Page<User> pageQuery(String userName, Date beginTime, Date endTime, Pageable pageable);


}

4.2在controller中调用

package com.itstudy.controller;

import com.itstudy.dao.UserRepository;
import com.itstudy.domain.Role;
import com.itstudy.domain.User;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.text.ParseException;
import java.util.Arrays;
import java.util.UUID;

@RestController
@RequestMapping("/index")
public class IndexController {

    final static Logger logger = LoggerFactory.getLogger(IndexController.class);

    @Autowired
    UserRepository userRepository;


    @RequestMapping("/query")
    public Object getQuery(Integer page, Integer size, String userName) throws ParseException {

        if (page < 1) {
            page = 1;
        }

        Sort sort = new Sort(Sort.Direction.DESC, "gmtCreate");
        Pageable pageable = new PageRequest(page - 1, size, sort);


        return userRepository.queryByUserNameLike(userName, pageable);

    }

    @PostMapping("/create")
    public void postCreate() {

        for (int i = 0; i < 20; i++) {
            User user = new User();
            user.setEmail("email@" + Math.random());
            user.setUserName("username-" + Math.random());
            user.setId(UUID.randomUUID().toString());
            user.setMobile("123");

            Role role = new Role();
            role.setId("100000001");
            role.setName("role-test");

            user.setRoles(Arrays.asList(role));

            userRepository.save(user);
        }

        logger.info("添加成功");
    }

}

5.使用mongoTemplate操作数据库

5.1 定义操作类库

package com.itstudy.dao;

import com.itstudy.domain.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageImpl;
import org.springframework.data.domain.Pageable;
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.Date;
import java.util.List;
import java.util.regex.Pattern;

@Component
public class UserDao {

    @Autowired
    MongoTemplate mongoTemplate;

    //一般查询
    public User findById(String id) {
        Query query = new Query();
        Criteria criteria = Criteria.where("id").is(id);
        query.addCriteria(criteria);
        return mongoTemplate.findOne(query, User.class);
    }

    //模糊查询
    public List<User> findByUserName(String userName) {

        Pattern pattern = Pattern.compile("^.*" + userName + ".*$", Pattern.CASE_INSENSITIVE);
        Criteria criteria = Criteria.where("userName").regex(pattern);
        Query query = new Query();
        query.addCriteria(criteria);
        return mongoTemplate.find(query, User.class);
    }

    public Page<User> pageByUserNameLike(String userName, Pageable pageable) {

        Pattern pattern = Pattern.compile("^.*" + userName + ".*$", Pattern.CASE_INSENSITIVE);
        Criteria criteria = Criteria.where("userName").regex(pattern);
        Query query = new Query();
        query.addCriteria(criteria);

        long total = mongoTemplate.count(query, User.class);

        List<User> items = mongoTemplate.find(query.with(pageable), User.class);

        return new PageImpl<User>(items, pageable, total);
    }


    public void saveOrUpdate(User item) {

        mongoTemplate.save(item);
    }

    public void updateFirstName(String id, String firstName) {
        Query query = new Query();
        query.addCriteria(Criteria.where("id").is(id));
        Update update = new Update();
        update.set("first_name", firstName);


        mongoTemplate.updateFirst(query, update, User.class);
    }

    public User delete(String id) {

        Query query = new Query();
        Criteria criteria = Criteria.where("id").is(id);
        query.addCriteria(criteria);

        User deleted = mongoTemplate.findAndRemove(query, User.class);

        return deleted;

    }

    public Page<User> pageQuery(String userName, Date beginTime, Date endTime, Pageable pageable) {

        Query query = new Query();

        Criteria criteria = new Criteria();

        if (beginTime != null && endTime != null) {

            criteria.andOperator(

                    Criteria.where("gmtCreate").gte(beginTime),

                    Criteria.where("gmtCreate").lt(endTime)
            );

        }
        query.addCriteria(criteria);

        long total = mongoTemplate.count(query, User.class);

        List<User> items = mongoTemplate.find(query.with(pageable), User.class);

        return new PageImpl<User>(items, pageable, total);
    }


}

5.2 在controller中调用

package com.itstudy.controller;

import com.itstudy.dao.UserDao;import com.itstudy.domain.User;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.text.ParseException;
import java.util.Arrays;
import java.util.UUID;

@RestController
@RequestMapping("/home")
public class HomeController {
    final static Logger logger = LoggerFactory.getLogger(IndexController.class);

    @Autowired
    UserDao userDao;

    @RequestMapping("/query")
    public Object getQuery(Integer page, Integer size, String userName) throws ParseException {
        if (page < 1) {
            page = 1;
        }

        Sort sort = new Sort(Sort.Direction.DESC, "gmtCreate");
        Pageable pageable = new PageRequest(page - 1, size, sort);


        return userDao.pageByUserNameLike(userName, pageable);
    }

    @PostMapping("/create")
    public void postCreate() {

        for (int i = 0; i < 20; i++) {
            User user = new User();
            user.setEmail("email@" + Math.random());
            user.setUserName("username-" + Math.random());
            user.setId(UUID.randomUUID().toString());
            user.setMobile("123");

            userDao.saveOrUpdate(user);
        }

        logger.info("添加成功");
    }
}

6.启动SpringBoot项目

package com.itstudy;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class App {
    public static void main(String[] args) {
        //System.out.println( "Hello World!" );

        SpringApplication.run(App.class, args);
    }
}

7.补充

补充：
1.spring-data-mongodb查询结果返回指定字段

方法1
 
DBObject dbObject = new BasicDBObject();
dbObject.put("status", 1);

DBObject fieldObject = new BasicDBObject();
fieldObject.put("catalogName", true);
fieldObject.put("_id", true);

Query query = new BasicQuery(dbObject, fieldObject);

return MongoPagebleUtil.queryAndPagable(query, pageable, getMongoOperations(), ForeCatalog.class);



方法2
 
@Query(value = "{'status':?0 }", fields = "{ '_id' : 1, 'catalogName' : 1}")

List<ForeCatalog> findAllForeCatalogIdAndName(String status);

2.使用多数据源
https://www.cnblogs.com/ityouknow/p/6828919.html

示例总结

@RestController
@RequestMapping("/")
public class IndexController {

    private MongoTemplate mongoTemplate;

    @RequestMapping("/index")
    public void test() {

        UserTest userTest = new UserTest();

        userTest.setId("1");
        userTest.setName("abc");

        //用于更新个别字段
        Query query = Query.query(Criteria.byExample(userTest));
        System.out.println(query.toString());


    }

    public PageImpl<UserTest> test07() {

        Query query = new Query();

        int pageIndex = 1;
        int pageSize = 20;
        
        //分页
        Pageable pageable = new PageRequest(pageIndex, pageSize);
        query.with(pageable);

        //排序
        query.with(new Sort(Sort.Direction.ASC, "ts", "id"));

        //总数
        long count = mongoTemplate.count(query, UserTest.class);

        //列表
        List<UserTest> userTestList = mongoTemplate.find(query, UserTest.class);

        PageImpl<UserTest> page = new PageImpl<UserTest>(userTestList,pageable,count);

        return page;
    }

    public void test06() {
        UserTest userTest = new UserTest();

        userTest.setId("1");
        userTest.setName("abc");

        //如果不存在，会插入。
        // 如果存在，会进行替换更新
        mongoTemplate.save(userTest);

        //用于更新个别字段
        Query query = Query.query(Criteria.where("id").is("1"));
        Update update = Update.update("new_field", "value");

        mongoTemplate.updateFirst(query, update, UserTest.class);

    }

    public void test05() {

        Criteria criteria = new Criteria();
        criteria.andOperator(Criteria.where("remark").is("remark"), Criteria.where("passworkd").is("password"));
        criteria.orOperator(Criteria.where("id").is("abc"), Criteria.where("name").is("abc"));

        Query query = new Query();

        query.addCriteria(criteria);

        System.out.println(query.toString());

        //输出
        //Query: { "$and" : [ { "remark" : "remark"} , { "passworkd" : "password"}] , "$or" : [ { "id" : "abc"} , { "name" : "abc"}]}, Fields: null, Sort: null
    }

    public void test04() {

        Criteria criteria = new Criteria();
        criteria.andOperator(Criteria.where("remark").is("remark"), Criteria.where("passworkd").is("password"));

        Query query = new Query();

        query.addCriteria(criteria);

        query.addCriteria(Criteria.where("id").is("abc"));

        System.out.println(query.toString());

        //输出
        //Query: { "$and" : [ { "remark" : "remark"} , { "passworkd" : "password"}] , "id" : "abc"}, Fields: null, Sort: null
    }

    public void test03() {

        Criteria criteria = new Criteria();
        criteria.andOperator(Criteria.where("remark").is("remark"), Criteria.where("passworkd").is("password"));

        Criteria criteria2 = new Criteria();
        criteria2.orOperator(Criteria.where("id").is("abc"), Criteria.where("name").is("abc"));

        Query query = new Query();

        query.addCriteria(criteria);

        query.addCriteria(criteria2);

        System.out.println(query.toString());

        //输出
    }

    public void test02() {

        Criteria criteria = new Criteria();

        criteria.andOperator(Criteria.where("remark").is("remark"), Criteria.where("passworkd").is("password"));

        Query query = new Query();
        query.addCriteria(criteria);

        System.out.println(query.toString());

        //输出
        //Query: { "$and" : [ { "remark" : "remark"} , { "passworkd" : "password"}]}, Fields: null, Sort: null
    }

    //这种调用是无效的
    public void test01() {
        Criteria criteria = new Criteria();
        criteria.where("name").is("name");

        Query query = new Query();

        query.addCriteria(criteria);


        System.out.println(query.toString());

        //输出
        //Query: { }, Fields: null, Sort: null
        //原因 where是静态方法
        //criteria对像，仅能调用 非静态方法 如 orOperation andOperation
        //其它情况下,只使用query.add(Criteria.where("").is(""))即可，可以多次调用

    }
}

动态添加条件

动态添加条件两种方法:

方法1 criteria.and

String nickName = "";
String sex = "";
String authorizerAppId="";
String tantenId="";

Criteria criteria = Criteria.where("authorizer_appid").is(authorizerAppId).and("tanten_id").is(tantenId);

if (nickName != null && nickName.trim().length() > 0) {
    Pattern pattern = Pattern.compile("^.*" + nickName + ".*$", Pattern.CASE_INSENSITIVE);
    criteria.and("nickname").regex(pattern);
}
if (sex != null && sex.trim().length() > 0) {
    criteria.and("sex").is(sex);
}

Query query = Query.query(criteria);

logger.info("criteria:{}", query.toString());

输出：

{ "authorizer_appid" : "3" , "tanten_id" : "4" , "nickname" : { "$regex" : "^.*1.*$" , "$options" : "i"} , "sex" : "2"}

方法2：query.addCriteria()

String nickName = "1";
String sex = "2";
String authorizerAppId="3";
String tantenId="4";

Criteria criteria = Criteria.where("authorizer_appid").is(authorizerAppId).and("tanten_id").is(tantenId);

Query query = Query.query(criteria);

if (nickName != null && nickName.trim().length() > 0) {
    Pattern pattern = Pattern.compile("^.*" + nickName + ".*$", Pattern.CASE_INSENSITIVE);
    query.addCriteria(Criteria.where("nickname").regex(pattern));
}
if (sex != null && sex.trim().length() > 0) {
    query.addCriteria(Criteria.where("sex").is(sex));
}

logger.info("criteria:{}", query.toString());
    
输出：
    
{ "authorizer_appid" : "3" , "tanten_id" : "4" , "nickname" : { "$regex" : "^.*1.*$" , "$options" : "i"} , "sex" : "2"}

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原文地址：https://www.cnblogs.com/liuxm2017/p/10998164.html