Problem

attribute name pId
Lombok @Data -> getPId()/setPId()
Java Specification -> second letter should not be capital
Jackson will follow JSP, handle the set method(setPId)
first letter P will be lower(p)
second letter I will be lower (i)
third letter d will keep lower (d)
mean will match "pid" to setPId();

Code

@Data
public class DemoObj {
    private String pId;
}

public class Client {
  public static void main(String[] args) {
    // will change to pid
    DemoObj demoObj = new DemoObj();
    demoObj.setPId("1");
    String a = JsonHelper.toJson(demoObj);
    System.out.println(a);
    // will match setPId method
    String b = "{\"pid\":\"1\"}"; 
    DemoObj demoObj1 = JsonHelper.readValue(b, DemoObj.class);
    System.out.println(demoObj1.getPId());
    // will not match
    String c = "{\"pId\":\"1\"}"; 
    DemoObj demoObj2 = JsonHelper.readValue(c, DemoObj.class);
    System.out.println(demoObj2.getPId());
  }
}

{"pid":"1"}
1
null

Comment

need to restrict do not use "aB%" format as attribute

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最后编辑时间为: Jun 13, 2023 at 09:58 am

Lombok with Second Capital problem

Problem

Code

Comment