content: package com.alibaba.json.bvt.issue_1200;
  
  import com.alibaba.fastjson.JSON;
  import com.alibaba.fastjson.annotation.JSONField;
  import junit.framework.TestCase;
  
  /**
   * Created by kimmking on 09/06/2017.
   */
  public class Issue1254 extends TestCase {
      public void test_for_issue() throws Exception {
          A a = new A();
          a._parentId = "001";
          String test = JSON.toJSONString(a);
          System.out.println(test);
          assertEquals("{\"_parentId\":\"001\"}", test);
  
          B b = new B();
          b.set_parentId("001");
  
  
          String testB = JSON.toJSONString(b);
          System.out.println(testB);
          assertEquals("{\"_parentId\":\"001\"}", testB);
  
      }
  
      public static class A {
          public String _parentId;
      }
  
      public static class B {
          @JSONField(name = "_parentId")
          private String _parentId;
  
          public String get_parentId() {
              return _parentId;
          }
  
          public void set_parentId(String _parentId) {
              this._parentId = _parentId;
          }
      }
  }
  