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第十二章 springboot + mongodb(复杂查询)

  • 简单查询:使用自定义的XxxRepository接口即可。(见 第十一章 springboot + mongodb(简单查询))
  • 复杂查询:使用MongoTemplate以及一些查询条件构建类(BasicDBList、BasicDBObject、Criteria等)

1、application.properties

1 #mongodb note:mongo3.x will not use host and port,only use uri2 #spring.data.mongodb.host=192.168.22.1103 #spring.data.mongodb.port=270174 #spring.data.mongodb.database=myfirstMongodb5 spring.data.mongodb.uri=mongodb://192.168.22.110:27017/myfirstMongodb

说明:

  • mongo2.x支持以上两种配置方式
  • mongo3.x仅支持uri方式

2、Admin

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package com.xxx.firstboot.domain;import org.springframework.data.annotation.Id;/** * 测试复杂的mongo查询 */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;    }}
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注意:

  • @Id必须有

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> {}

说明:该接口用于简单查询。这里是一个空接口,具有CRUD功能。

4、CustomerController

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/*********************测试复杂的mongo查询**********************/    @Autowired    private AdminRepository adminRepository;    @Autowired    private MongoTemplate mongoTemplate;        @ApiOperation("增加一个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("获取所有的Admin")    @RequestMapping(value = "/getAllAdmin", method = RequestMethod.GET)    public List<Admin> getAllAdmin() {        return adminRepository.findAll();    }        @ApiOperation("复杂的admin查询")    @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(); //用于记录        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);    }
View Code

说明:

  • getAdminByNameAndSexOrAddress要实现select * from admin where name = ? and (sex = ? or address = ?)
  • 通过BasicDBList、BasicDBObject构建查询参数
  • findOne返回第一个符合条件的结果、find返回符合条件的结果列表
  • 以上查询的collection是admin(VO的简单类名),也可以指定从某一个collection中查询(查看find、findOne等方法)

注意:mongodb的查询字段必须是小写

测试:

启动mongo,启动应用,打开swagger,访问即可。

 

参考:

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

第十二章 springboot + mongodb(复杂查询)