package com.alibaba.json.bvt; import org.junit.Assert; import com.alibaba.fastjson.JSON; import com.alibaba.fastjson.annotation.JSONField; import com.alibaba.fastjson.serializer.SerializeConfig; import com.alibaba.fastjson.serializer.SerializerFeature; import junit.framework.TestCase; public class StringFieldTest2 extends TestCase { public void test_codec_null_1() throws Exception { V0 v = new V0(); SerializeConfig mapping = new SerializeConfig(); String text = JSON.toJSONString(v, mapping, SerializerFeature.WriteMapNullValue); Assert.assertEquals("{\"value\":\"\"}", text); } public static class V0 { @JSONField(serialzeFeatures=SerializerFeature.WriteNullStringAsEmpty) private String value; public String getValue() { return value; } public void setValue(String value) { this.value = value; } } }