[英]convert json string to java string array
I am getting a json string as ["A","B","C","D","E"] in serlvet controller. 我在serlvet控制器中得到一个json字符串为[“A”,“B”,“C”,“D”,“E”]。
I want to convert this string into a Java string array. 我想将此字符串转换为Java字符串数组。 The Json string also includes [].
Json字符串还包括[]。
output should be a Java String array: 输出应该是Java String数组:
arr[0] = A
arr[1] = B
and so on. 等等。 Could you please suggest a parsing solution?
你能建议一个解析解决方案吗?
Using a stream you could convert it like so: 使用流你可以像这样转换它:
String s = "[\"A\",\"B\",\"C\",\"D\",\"E\"]";
String[] arr = Arrays.stream(s.substring(1, s.length()-1).split(","))
.map(e -> e.replaceAll("\"", ""))
.toArray(String[]::new);
You could also use a JSON library (which might be the prefered way). 您还可以使用JSON库(可能是首选方式)。 For example using Jackson:
例如使用杰克逊:
String s = "[\"A\",\"B\",\"C\",\"D\",\"E\"]";
ObjectMapper mapper = new ObjectMapper();
String[] arr = mapper.readValue(s, String[].class);
ArrayList<String> jsonStringToArray(String jsonString) throws JSONException {
ArrayList<String> stringArray = new ArrayList<String>();
JSONArray jsonArray = new JSONArray(jsonString);
for (int i = 0; i < jsonArray.length(); i++) {
stringArray.add(jsonArray.getString(i));
}
return stringArray;
}
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