java查詢程式碼

/**
 * 查詢教師年齡 30 歲 且所帶 年齡為 20 歲且來自 china 學生的教師
 */
@Test
public void  queryTest(){
    BasicDBList basicDBList=new BasicDBList();
//教師姓名
basicDBList.add(new BasicDBObject("age","30"));
//內嵌文件多條件
basicDBList.add(new BasicDBObject("studentList", new BasicDBObject("$elemMatch",new BasicDBObject("from"
 
,"china"))));
basicDBList.add(new BasicDBObject("studentList", new BasicDBObject("$elemMatch",new BasicDBObject("age","20"))));
DBObject obj =new BasicDBObject();
// and 查詢
obj.put("$and", basicDBList);
Query query= new BasicQuery(obj);
List<Teacher> teachers = mongoTemplate.find(query, Teacher.class
 
);
}

教師資訊(get 、set 省略)

/**
 * @author Cheng.Wei
 * @ClassName Teacher
 * @Description 教師資訊
 * @date 2017-09-26 16:23
 */
@Document(collection = "student")
public class Teacher implements Serializable{
    @Id
private String id;
    private String name;
    private Integer age;
    private List<Student> studentList
 
;

}

學生資訊(get 、set 省略)

/**
 * @author Cheng.Wei
 * @ClassName Student
 * @Description 學生資訊
 * @date 2017-09-26 16:14
 */
public class Student {
    private String name;
    private Integer age;
    private String from;

}