英文:
How to write Java Array string to Json File
问题
以下是您的代码翻译结果：
String Stringtojson = Concstring;
JSONParser parser = new JSONParser();
try {
Object object = parser.parse(Stringtojson);
// 将 Object 转换为 JSONObject
JSONObject jsonObject3 = (JSONObject) object;
try {
FileWriter file = new FileWriter("F:\\myjson.json");
file.write(jsonObject3.toJSONString());
file.close();
} catch (IOException e) {
e.printStackTrace();
}
} catch (Exception e) {
e.printStackTrace();
}
请注意，由于您要求只返回翻译好的部分，我已将翻译结果放在代码块中，原始文本中的 HTML 实体引用（如 "）已被正常翻译成双引号。
英文:
I have Java string and would like to parse it to JSON file. I first try to parse the string to an Object then to Json Object. The java string contains array/list of 2 elements. I would want to maintain that structure since its submitted to an API in that form.
Content of my String looks as below:
[
{ "foedselsdato" : "2012-04-29",
"individId" : "052804211084",
"undergruppe" : "KU",
"varslinger" :
{ "medisinering" :
[
{ "merknad" : "",
"preparat" : "11 Mastipen vet Intramammarie 300 mg\/sprøyte",
"tilbakeholdelsesdato" : "2020-08-25" },
{ "merknad" : "",
"preparat" : "11 Penovet vet Inj væske, susp 300 mg\/ml",
"tilbakeholdelsesdato" : "2020-08-25" } ] } },
{ "foedselsdato" : "2017-05-19",
"individId" : "052820651335",
"undergruppe" : "KU",
"varslinger" :
{ "helsetilstand" :
[
{ "merknad" : "Ole test",
"tilstand" : "SVAK_HALTHET",
"tiltak" : "EKSTRA_STROE" } ] } } ]
Below is my code:
String Stringtojson = Concstring;
JSONParser parser = new JSONParser();
try
{
Object object = parser.parse(Stringtojson);
//convert Object to JSONObject
JSONObject jsonObject3 = (JSONObject)object;
try {
FileWriter file = new FileWriter("F:\myjson.json");
file.write(jsonObject3.toJSONString());
file.close();
} catch (IOException e) {
e.printStackTrace();
}
}
catch(Exception e)
{
e.printStackTrace();
}
答案1
得分: 1
`Object object = parser.parse(Stringtojson);` 这行代码实际上将您的字符串转换为一个 `JSONArray`。原因是外部的数组括号（即"["和"]"）。将 `JSONArray` 强制转换为 `JSONObject` 导致崩溃（`JSONObject jsonObject3 = (JSONObject)object;`）
您基本上有两个选项：
1) 将 `JSONObject jsonObject3 = (JSONObject)object;` 这行替换为 `JSONArray jsonObject3 = (JSONArray)object;`。然后文件的内容将完全是您的字符串（并且它将是一个有效的 JSON 文件）。
2) 将外部的 `[` 替换为 `{ "root": [`，将 `]` 替换为 `] }`。这将把您的 JSONArray 转换为 JSONObject。
总的来说，这涉及到 JSONObject 和 "[]" 定义的差异（因为它本质上是元素列表），以及 JSONArray 和 "{}" 定义的差异，它类似于字典（即您有键和值）。
英文:
The line Object object = parser.parse(Stringtojson); actually converts your string into an JSONArray. The reason are the outer array brackets (i.e. "[" and "]"). Casting a JSONArray to a JSONObject causes the crash (JSONObject jsonObject3 = (JSONObject)object;)
You have essentially two options:
-
Replace the line
JSONObject jsonObject3 = (JSONObject)object;withJSONArray jsonObject3 = (JSONArray)object;. Then the content of the file would be exactly your string (and it would be a valid JSON file). -
Replace the outter
[with{ "root": [and]with] }. This would turn your JSONArray into a JSONObject.
In general, this is all about the difference between a JSONObject which is defined by "[]" (as it is essentially a list of elements) and a JSONArray which is defined by "{}" and is comparable to a dictionary (i.e. you have keys and values).
答案2
得分: 0
String Stringtojson = Concstring;
JSONParser parser = new JSONParser();
try
{
Object object = parser.parse(Stringtojson);
//convert Object to JSONObject
JSONArray jsonObject3 = (JSONArray)object;
try {
FileWriter file = new FileWriter(resultDir);
file.write(jsonObject3.toString());
file.close();
} catch (IOException e) {
e.printStackTrace();
}
}
catch(Exception e)
{
e.printStackTrace();
}
英文:
String Stringtojson = Concstring;
JSONParser parser = new JSONParser();
try
{
Object object = parser.parse(Stringtojson);
//convert Object to JSONObject
JSONArray jsonObject3 = (JSONArray)object;
try {
FileWriter file = new FileWriter(resultDir);
file.write(jsonObject3.toString());
file.close();
} catch (IOException e) {
e.printStackTrace();
}
}
catch(Exception e)
{
e.printStackTrace();
}
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