java - 更新 json 数组文件中的值

Question

我正在读取一个包含 json 数组的 json 文件，并且尝试更新 jason 数组中所有对象中的一些键值，并将新更新的 json 数组写入另一个文件。

其中包含以下 json 数组的文件:

 [
      {
        "info": "old text"
        "sometext": "old text",
        "Id": 2,
        "No": 12,
      },
      {
        "info": "old text"
        "sometext": "old text",
        "Id": 68,
        "No": 22,
      },
      {
        "info": "old text"
        "sometext": "old text",
        "Id": 87,
        "No": 15,
      }

 ]

我想更新 json 数组中所有对象中的 info 和 sometext 键的值，以便使用更新的 json 数组输出到新文件(这是我想要的输出，我想通过我的代码):

 [
      {
        "info": "new text"
        "sometext": "new text",
        "Id": 2,
        "No": 12,
      },
      {
        "info": "new text"
        "sometext": "new text",
        "Id": 68,
        "No": 22,
      },
      {
        "info": "new text"
        "sometext": "new text",
        "Id": 87,
        "No": 15,
      }

 ]

这是我到目前为止的代码:

final String JSON_PATH = "old.json";
final String JSON_PATH1 = "new.json";

BufferedWriter bw = new BufferedWriter(new FileWriter(JSON_PATH1));
BufferedReader br = new BufferedReader(new FileReader(JSON_PATH));
JsonParser parser = new JsonParser();
JsonArray arrayObj = parser.parse(br).getAsJsonArray();


for(int i=0; i < arrayObj.size();i++) {
    JsonObject burObj = arrayObj.get(i).getAsJsonObject();
    String  old_info = burObj.get("info").getAsString();
    String  old_sometext = burObj.get("sometext").getAsString();
    burObj.addProperty(NewTextGen(old_info), "info");
    burObj.addProperty(NewTextGen(old_sometext), "sometext");
    burObj.remove(old_info);
    burObj.remove(old_sometext);
    Gson gson = new GsonBuilder().setPrettyPrinting().disableHtmlEscaping().create();
    gson.toJson(arrayObj, new JsonWriter(bw));
}

when I run this code I get gibberish output of both new and old values and not my desired output.

乱码输出:

 [
      {
        "info": "old text"
        "sometext": "old text",
        "info": "new text"
        "sometext": "new text",
        "Id": 2,
        "No": 12,
      },
      {
        "info": "old text"
        "sometext": "old text",
        "info": "new text"
        "sometext": "new text",
        "Id": 68,
        "No": 22,
      },
      {
        "info": "old text"
        "sometext": "old text",
        "info": "new text"
        "sometext": "new text",
        "Id": 87,
        "No": 15,
      },
      {
        "info": "old text"
        "sometext": "old text",
        "info": "new text"
        "sometext": "new text",
      }

 ]

请注意 旧文本和新文本只是虚拟文本，而不是实际文本，与 NewTextGen() 虚拟方法相同，因为我只是想知道我是什么我的代码做错了

<小时/>

更新解决了我的问题，检查答案

Answer 1

您在每次迭代中编写整个“arrayObj”。可能的意图是写出“burObj”。

gson.toJson(burObj, new JsonWriter(bw));