JSONObject.toJSONString(Object object, SerializerFeature… features)
Fastjson的SerializerFeature序列化属性
QuoteFieldNames———-输出key时是否使用双引号,默认为true
WriteMapNullValue——–是否输出值为null的字段,默认为false
WriteNullNumberAsZero—-数值字段如果为null,输出为0,而非null
WriteNullListAsEmpty—–List字段如果为null,输出为[],而非null
WriteNullStringAsEmpty—字符类型字段如果为null,输出为”“,而非null
WriteNullBooleanAsFalse–Boolean字段如果为null,输出为false,而非nul
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Map < String , Object > jsonMap = new HashMap< String , Object>(); jsonMap.put("a",1); jsonMap.put("b",""); jsonMap.put("c",null); jsonMap.put("d","dddddddddd"); String str = JSONObject.toJSONString(jsonMap,SerializerFeature.WriteMapNullValue); System.out.println(str); //输出结果:{"a":1,"b":"","c":null,"d":"dddddddddd"} |
from:http://www.voidcn.com/article/p-ebkhpvlq-bqh.html