• 簡單查詢：使用自定義的XxxRepository接口即可。（見 第十一章 springboot + mongodb（簡單查詢））
• 復雜查詢：使用MongoTemplate以及一些查詢條件構建類（BasicDBList、BasicDBObject、Criteria等）

1、application.properties

1 #mongodb note:mongo3.x will not use host and port,only use uri
2 #spring.data.mongodb.host=192.168.22.110
3 #spring.data.mongodb.port=27017
4 #spring.data.mongodb.database=myfirstMongodb
5 spring.data.mongodb.uri=mongodb://192.168.22.110:27017/myfirstMongodb
 

說明：

• mongo2.x支持以上兩種配置方式
• mongo3.x僅支持uri方式

2、Admin

package com.xxx.firstboot.domain;

import org.springframework.data.annotation.Id;

/**
 * 測試復雜的mongo查詢
 */
public class Admin {
    @Id
    private String adminId;
    private String name;
    private Integer sex;
    private String address;

    
 
public String getAdminId() {
        return adminId;
    }

    public void setAdminId(String adminId) {
        this.adminId = adminId;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public
 
 Integer getSex() {
        return sex;
    }

    public void setSex(Integer sex) {
        this.sex = sex;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

}

註意：

• @Id必須有

3、AdminRepository

package com.xxx.firstboot.mongo;

import org.springframework.data.mongodb.repository.MongoRepository;

import com.xxx.firstboot.domain.Admin;

public interface AdminRepository extends MongoRepository<Admin, String> {
}

說明：該接口用於簡單查詢。這裏是一個空接口，具有CRUD功能。

4、CustomerController

/*********************測試復雜的mongo查詢**********************/
    @Autowired
    private AdminRepository adminRepository;
    @Autowired
    private MongoTemplate mongoTemplate;
    
    @ApiOperation("增加一個Admin")
    @RequestMapping(value = "/addAdmin", method = RequestMethod.GET)
    public Admin addAdmin(@RequestParam("name") String name,
                          @RequestParam("sex") Integer sex,
                          @RequestParam("address") String address) {
        Admin admin = new Admin();
        admin.setName(name);
        admin.setSex(sex);
        admin.setAddress(address);
        return adminRepository.save(admin);
    }
    
    @ApiOperation("獲取所有的Admin")
    @RequestMapping(value = "/getAllAdmin", method = RequestMethod.GET)
    public List<Admin> getAllAdmin() {
        return adminRepository.findAll();
    }
    
    @ApiOperation("復雜的admin查詢")
    @RequestMapping(value = "/getAdminByNameAndSexOrAddress", method = RequestMethod.GET)
    public Admin getAdminByNameAndSexOrAddress(@RequestParam("name") String name,
                                                 @RequestParam(value="sex",required=false) Integer sex,
                                                 @RequestParam(value="address",required=false) String address) {
        /**
         * OR
         */
        BasicDBList orList = new BasicDBList(); //用於記錄
        if (sex != null) {
            orList.add(new BasicDBObject("sex", sex));
        }
        if (StringUtils.isNotBlank(address)) {
            orList.add(new BasicDBObject("address", address));
        }
        BasicDBObject orDBObject = new BasicDBObject("$or", orList);
        
        /**
         * and
         */
        BasicDBList andList = new BasicDBList();
        andList.add(new BasicDBObject("name", name));
        andList.add(orDBObject);
        BasicDBObject andDBObject = new BasicDBObject("$and", andList);
        
        return mongoTemplate.findOne(new BasicQuery(andDBObject), Admin.class);

    }

說明：

• getAdminByNameAndSexOrAddress要實現select * from admin where name = ? and (sex = ? or address = ?)
• 通過BasicDBList、BasicDBObject構建查詢參數
• findOne返回第一個符合條件的結果、find返回符合條件的結果列表
• 以上查詢的collection是admin（VO的簡單類名），也可以指定從某一個collection中查詢（查看find、findOne等方法）

註意：mongodb的查詢字段必須是小寫。

測試：

啟動mongo，啟動應用，打開swagger，訪問即可。

參考：

http://blog.csdn.net/congcong68/article/details/47183209

第十二章 springboot + mongodb（復雜查詢）