content: package com.alibaba.json.demo;
  
  import junit.framework.TestCase;
  
  import com.alibaba.fastjson.JSON;
  import com.alibaba.fastjson.serializer.JSONSerializer;
  import com.alibaba.fastjson.serializer.NameFilter;
  import com.alibaba.fastjson.serializer.SerializeWriter;
  import com.alibaba.fastjson.serializer.ValueFilter;
  
  public class FilterDemo extends TestCase {
  
      public void test_secure() throws Exception {
  
          ValueFilter filter = new ValueFilter() {
  
              public Object process(Object source, String name, Object value) {
                  if (name.equals("name")) {
                      return "WSJ";
                  }
                  return value;
              }
          };
  
          NameFilter nameFilter = new NameFilter() {
              public String process(Object source, String name, Object value) {
                  if (name.equals("id")) {
                      return "ID";
                  }
                  return name;
              }
          };
  
          String text = "{\"id\":123,\"name\":\"WJH\"}";
  
          Object object = JSON.parse(text);
  
          SerializeWriter out = new SerializeWriter();
          JSONSerializer serializer = new JSONSerializer(out);
          serializer.getValueFilters().add(filter);
          serializer.getNameFilters().add(nameFilter);
  
          serializer.write(object);
  
          String outText = out.toString();
          System.out.println(outText);
      }
  }
  