JSON.toJSONString(Object object,SerializerFeature...features)详解
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package myProject; import java.math.BigDecimal; import java.util.ArrayList; import java.util.List; import com.alibaba.fastjson.JSON; import com.alibaba.fastjson.JSONObject; import com.alibaba.fastjson.serializer.SerializerFeature; public class FastJsonTest { private int a; private BigDecimal b; private String c; private List<Student> list; public String getC() { return c; } public void setC(String c) { this.c = c; } public int getA() { return a; } public void setA(int a) { this.a = a; } public BigDecimal getB() { return b; } public void setB(BigDecimal b) { this.b = b; } public List<Student> getList() { return list; } public void setList(List<Student> list) { this.list = list; } public static void main(String[] args) { FastJsonTest f=new FastJsonTest(); String json1=JSON.toJSONString(f); String json2=JSON.toJSONString(f,SerializerFeature.WriteMapNullValue,SerializerFeature.WriteNullListAsEmpty,SerializerFeature.WriteNullStringAsEmpty,SerializerFeature.WriteNullNumberAsZero); System.out.println("json1"+json1); System.out.println("json2"+json2); } }
输出结果为:
json1{"a":0}
json2{"a":0,"b":0,"c":"","list":[]}
可见,BigDecimal类型,String类型,List类型在不添加对应参数,都不会显示出来。