java - GSON 的自定义打印格式

Question

我在使用 GSON 进行打印时遇到了一些问题。 GSON 在打印方面有两种选择。

1. 漂亮的打印
2. 紧凑打印

我打算使用 pretty-print 的修改形式，尽管 documentation说 JsonPrintFormatter 是用于修改输出格式的类。我在 GSON 存储库中找不到该类!

关于为什么会出现这种情况或者我可以修改 GSON 打印有什么想法吗？除此之外，任何用于修改 Java 语言中 JSON 的间距或格式的库也会有所帮助。

漂亮的打印:

    {
  "classname": "something",
  "type": "object",
  "version": 1,
  "properties": [
    {
      "propertyname": "something1",
      "type": "String",
      "length": 255
    },
    {
      "propertyname": "something2",
      "type": "Date",
      "length": 10
    }
  ]
}

紧凑打印:

{"classname":"something","type":"object","version":1,"properties":[{"propertyname":"something1","type":"String","length":255},{"propertyname":"something2","type":"Date","length":10}]}

我的打印风格:

{
  "classname": "something",
  "type": "object",
  "version": 1,
  "properties": [
    {"propertyname": "something1","type": "String","length": 255},
    {"propertyname": "something2","type": "Date","length": 10}
  ]
}

Answer 1

嗯，目前还在进行中，但这对于只有一个数组的字符串来说应该可以解决问题。将研究使其更加稳定并能够处理更复杂的结构。

  private static String reformat(String og){
    String reformattable = og;
    String[] parts = reformattable.split("\\[",2);
    String arrayPart = parts[1];
    String arrayOnly = arrayPart.split("]",2)[0];
    reformattable = arrayOnly.replaceAll("\\{\n","{");
    reformattable = reformattable.replaceAll("\",\n", "\\\",");
    reformattable = reformattable.replaceAll(" +"," ");
    reformattable = reformattable.replaceAll("\\{ ","   {");
    reformattable = reformattable.replaceAll("\n }","}");

    return og.replace(arrayOnly,reformattable);
} 

结果应该如下所示(至少对于我的简单类):

{
 "classname": "test",
 "properties": [
   {"propertyname": "1", "length": 1},
   {"propertyname": "1", "length": 1}
 ]
}