Samples PropertyFilter

Use PropertyFilter

Case 1

  import com.alibaba.fastjson.serializer.JSONSerializer;
  import com.alibaba.fastjson.serializer.PropertyFilter;
  import com.alibaba.fastjson.serializer.SerializeWriter;
   
  PropertyFilter filter = new PropertyFilter() {
      public boolean apply(Object source, String name, Object value) {
          return false;
      }
  };


  SerializeWriter out = new SerializeWriter();
  JSONSerializer serializer = new JSONSerializer(out);
  serializer.getPropertyFilters().add(filter);
   
  A a = new A();
  serializer.write(a);

  String text = out.toString();
  Assert.assertEquals("{}", text);

Case 2

  PropertyFilter filter = new PropertyFilter() {
      public boolean apply(Object source, String name, Object value) {
          if("name".equals(name)) {
              return true;
          }
          return false;
      }
  };
   
  SerializeWriter out = new SerializeWriter();
  JSONSerializer serializer = new JSONSerializer(out);
  serializer.getPropertyFilters().add(filter);
   
  A a = new A();
  a.setName("chennp2008");
  serializer.write(a);
   
  String text = out.toString();
  Assert.assertEquals("{\"name\":\"chennp2008\"}", text);

Entity

  public static class A {
      private int id;
      private String name;
   
      public int getId() {
          return id;
      }
   
      public void setId(int id) {
          this.id = id;
      }
   
      public String getName() {
          return name;
      }
   
      public void setName(String name) {
          this.name = name;
      }
  }