ALiBABa fastjson去除JSON对象不需要的属性字段

来源：互联网发布：驱逐舰战列舰知乎编辑：程序博客网时间：2024/04/29 07:58

引入包：

import com.alibaba.fastjson.JSON;import com.alibaba.fastjson.JSONObject;

TEST测试用例：

@RunWith(SpringJUnit4ClassRunner.class)@ContextConfiguration(locations = "classpath:applicationContext.xml")public class JsonTest {        @Testpublic void testJson(){/*JSONObject json=new JSONObject();json.put("dd", "ss");json.put("mm", "ss");System.out.println("====1"+json.toJSONString()); json.remove("mm");System.out.println("====1"+json.toJSONString()); */DataObject obj=new DataObject();System.out.println(obj.toString());JSONObject jsonObject=JSON.parseObject(obj.toString());System.out.println("====all attributes:"+jsonObject.toJSONString()); jsonObject.remove("num1");System.out.println("====remove num1"+jsonObject.toJSONString()); jsonObject.remove("num3");System.out.println("====remove num3"+jsonObject.toJSONString()); }public class DataObject implements Serializable{public int num1=0;public int num2=0;public double num3=0.0;public double num4=0.0;public int getNum1() {return num1;}public void setNum1(int num1) {this.num1 = num1;}public int getNum2() {return num2;}public void setNum2(int num2) {this.num2 = num2;}public double getNum3() {return num3;}public void setNum3(double num3) {this.num3 = num3;}public double getNum4() {return num4;}public void setNum4(double num4) {this.num4 = num4;}@Overridepublic String toString() {String s="{";s+="\"num1"+"\":"+"\""+num1+"\",";s+="\"num2"+"\":"+"\""+num2+"\",";s+="\"num3"+"\":"+"\""+num3+"\",";s+="\"num4"+"\":"+"\""+num4+"\"";s+="}";return s;}}}

就是一个JSONObject 的remove方法就搞定了。以下是测试结果：

{"num1":"0","num2":"0","num3":"0.0","num4":"0.0"}====all attributes:{"num1":"0","num2":"0","num3":"0.0","num4":"0.0"}====remove num1{"num2":"0","num3":"0.0","num4":"0.0"}====remove num3{"num2":"0","num4":"0.0"}

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