Java and MongoTemplate error - No property xxx found for type An entity class name

Because the springboot version is too high, in the Mongo query statement, the in query cannot be underlined in the field, such as test_id. So the Test_id is solved by its alias, and it is solved by lowering the version of springboot. Reduced to 2.4.0

Change result code:

// 实体类代码
@Data
@Document("test")  // 列表数据来源
public class TestEntity extends BaseEntity {
    
    
	@Field("test_id")   // 字段改名 test_id，实际查询的是 test_id
	private String testid;
}

The original code:

// 实体类代码
@Data
@Document("test")  // 列表数据来源
public class TestEntity extends BaseEntity {
    
    
	private String test_id;
}

Mongo database fields: There are three fields below

_id
test_id
content

Then the original code is actually used, and it will reportNo property test found for type TestEntity

List<String> str = new ArrayList<>();
str.add("123456");
Query query = new Query(Criteria.where("test_id").in(str));

It needs to be added and @Fieldconverted . I don't quite understand the need for this step of conversion. I guess it is _ida conflict with the internal fields of Mongo, which should be a problem with the MongoTemplate interface. Added @Field, then continue to use the following code, you will not continue to report No property xxx found for type 某个实体类名similar problems.

List<String> str = new ArrayList<>();
str.add("123456");
Query query = new Query(Criteria.where("test_id").in(str));

Special attention: @FieldIt is just an alias query, not the specified key name for data return. The real key name is still defined by the entity class testid, and it is used testidinstead of @Field("test_id")insidetest_id

The following is the query result and returned data:

TestEntity(testid="123456", content="测试内容")