1.使用fastjson包

2.创建PropertityFilter对象

PropertyFilter filter = new PropertyFilter() {

@Override
public boolean apply(Object arg0, String filedname, Object arg2) {

//屏蔽cusId字段
if("cusId".equalsIgnoreCase(filedname)){
return false;
}

//屏蔽cusIMg字段
if("cusImg".equalsIgnoreCase(filedname)){
return false;
}
return true;
}
};

String jsonString = JSONObject.toJSONString(person,filter);