版权声明:本文为博主原创文章,转载请说明出处 https://blog.csdn.net/u010002184/article/details/83184457
class User {
String name;
String addr;
public User(String name, String addr) {
this.name = name;
this.addr = addr;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getAddr() {
return addr;
}
public void setAddr(String addr) {
this.addr = addr;
}
}
public void f1() {
User user = new User("ZHANGSAN", null);
System.out.println(JSONObject.toJSONString(user));//{"name":"ZHANGSAN"}
System.out.println(JSONObject.toJSONString(user,SerializerFeature.WriteMapNullValue));//{"addr":null,"name":"ZHANGSAN"}
}
public static void main(String[] args) {
AClass aClass = new AClass();
aClass.f1();
}