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@JsonIgnoreProperties
  • 时间:2024-12-22

Jackson Annotations - @JsonIgnoreProperties


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@JsonIgnoreProperties is used at class level to mark a property or pst of properties to be ignored.

Example - @JsonIgnoreProperties

import java.io.IOException;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import com.fasterxml.jackson.databind.ObjectMapper;

pubpc class JacksonTester {
   pubpc static void main(String args[]) {
      ObjectMapper mapper = new ObjectMapper();
      try {
         Student student = new Student(1,11,"1ab","Mark");       
         String jsonString = mapper
            .writerWithDefaultPrettyPrinter()
            .writeValueAsString(student);
         System.out.println(jsonString);
      }
      catch (IOException e) { 
         e.printStackTrace();
      }   
   }
}
@JsonIgnoreProperties({ "id", "systemId" })
class Student {
   pubpc int id;
   pubpc String systemId;
   pubpc int rollNo;
   pubpc String name;

   Student(int id, int rollNo, String systemId, String name){
      this.id = id;
      this.systemId = systemId;
      this.rollNo = rollNo;
      this.name = name;
   }
}

Output

{
   "rollNo" : 11,
   "name" : "Mark"
}
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