java - java中json按键选择多个值

Question

我有一个如下所示的 json

[{
    "D_Table_Name": "BUILDING",
    "S_Table_Name": "View1",
    "S_Data_Field_Name": "USECD",
    "D_Field_Name": "Description",
    "MappingCode": "FIELD"
  },
  {
    "D_Table_Name": "BUILDING",
    "S_Table_Name": "View1",
    "S_Data_Field_Name": "USECD",
    "D_Field_Name": "StndCode",
    "MappingCode": "FIELD"
  },
  {
    "D_Table_Name": "asdasd",
    "S_Table_Name": "View1",
    "S_Data_Field_Name": "qwew",
    "D_Field_Name": "ijhbgr4",
    "MappingCode": "FIELD"
  },
  {
    "D_Table_Name": "qwsdcv",
    "S_Table_Name": "View1",
    "S_Data_Field_Name": "kjmnbv",
    "D_Field_Name": "dszfs",
    "MappingCode": "FIELD"
  }]

如何获取键S_Table_Name的所有值

Answer 1

假设您正在使用任何特定的库将 JSON 字符串转换为对象，假设我正在使用 GSON图书馆

List<String> sTableNameValues = new ArrayList<>();
List<Map<String,String>> input = new GSON.fromJSON(inputJSONString);
for(Map.Entry<String,String> entry: input.entrySet()){
   if(entry.getKey().equals("S_Table_Name")){
      sTableNameValues.add(entry.getValue());
   }
}
// Now all your S_Table_Name values are inside your list.