我正在嘗試使用JSON從服務器獲取一個對象數組。從字符串中刪除所有匹配項
服務器向我發送以下字符串。現在
"[{\"DealComment\":null,\"DealVotes\":[],\"DealId\":1,\"CompanyId\":1,\"StartDate\":\"2012-12-13T00:00:00\",\"EndDate\":\"2012-12-16T00:00:00\",\"CouponCode\":\"Test Coupon 1\",\"Description\":\"Test Deal Description 1\",\"VoteUp\":null,\"VoteDown\":null,\"ViewCount\":null,\"Title\":\"Test Deal 1\"},{\"DealComment\":null,\"DealVotes\":[],\"DealId\":2,\"CompanyId\":1,\"StartDate\":\"2012-12-16T00:00:00\",\"EndDate\":\"2012-12-17T00:00:00\",\"CouponCode\":\"Test Coupon 2\",\"Description\":\"Test Description 2\",\"VoteUp\":null,\"VoteDown\":null,\"ViewCount\":null,\"Title\":\"Test Deal 2\"},{\"DealComment\":null,\"DealVotes\":[],\"DealId\":3,\"CompanyId\":1,\"StartDate\":\"2012-12-14T00:00:00\",\"EndDate\":\"2012-12-15T00:00:00\",\"CouponCode\":\"Test Code 3\",\"Description\":\"Test Description 3\",\"VoteUp\":null,\"VoteDown\":null,\"ViewCount\":null,\"Title\":\"Test Deal 3\"},{\"DealComment\":null,\"DealVotes\":[],\"DealId\":4,\"CompanyId\":1,\"StartDate\":\"2012-12-12T00:00:00\",\"EndDate\":\"2012-12-13T00:00:00\",\"CouponCode\":\"Test Coupon 4\",\"Description\":\"Test Description 4\",\"VoteUp\":null,\"VoteDown\":null,\"ViewCount\":null,\"Title\":\"Test Deal 4\"},{\"DealComment\":null,\"DealVotes\":[],\"DealId\":5,\"CompanyId\":2,\"StartDate\":\"2012-12-12T00:00:00\",\"EndDate\":\"2012-12-14T00:00:00\",\"CouponCode\":\"AwD\",\"Description\":\"Very awesome deal!\",\"VoteUp\":null,\"VoteDown\":null,\"ViewCount\":null,\"Title\":\"Awesome Deal 1\"}]"
,如果你在字符串仔細觀察,你會發現它包含一個\"
,而不是每"
。該字符串現在無法格式化爲JSONArray。所以,我需要"
更換的\"
每一次出現,這將有一個非常簡單的任務,有\
沒有一個轉義序列。
我試着用下面的代碼。
String jsonFormattedString = jsonStr.replaceAll("\\", "");
但它給了我以下例外。
12-19 00:35:59.575: W/System.err(444): java.util.regex.PatternSyntaxException: Syntax error U_REGEX_BAD_ESCAPE_SEQUENCE near index 1:
12-19 00:35:59.575: W/System.err(444): \
12-19 00:35:59.575: W/System.err(444):^
我的整個代碼,在情況下,它是任何使用的:
public void getAllDealsFromServerJson()
{
String apiUrl = "http://passme.azurewebsites.net/api/TestApi/";
HttpClient client = new DefaultHttpClient();
HttpConnectionParams.setConnectionTimeout(client.getParams(), 10000); //Timeout Limit
HttpResponse response;
JSONObject json = new JSONObject();
try{
HttpPost httpPost = new HttpPost(apiUrl);
json.put("requestType", "getalldeals");
StringEntity se = new StringEntity(json.toString());
se.setContentType(new BasicHeader(HTTP.CONTENT_TYPE, "application/json"));
httpPost.setEntity(se);
response = client.execute(httpPost);
Log.d("Http Response:", response.toString());
jsonResponse = response.toString();
BufferedReader reader = new BufferedReader(new InputStreamReader(response.getEntity().getContent(), "UTF-8"));
String jsonStr = reader.readLine();
Log.d("String Response", jsonStr);
String jsonFormattedString = jsonStr.replaceAll("\\", ""); // gives error
Log.d("Formatted String", jsonFormattedString);
//JSONTokener tokener = new JSONTokener(jsonFormattedString);
/*JSONObject finalResult = new JSONObject(tokener);
Log.d("JSON Response", "" + finalResult.optString("Title"));*/
JSONArray resultArray = new JSONArray(jsonFormattedString);
Log.d("JSON Array Result Length", "" + resultArray.length());
Log.d("JSON Array Result ", "" + resultArray.getJSONObject(0).optInt("DealId"));
}
catch (Exception e)
{
e.printStackTrace();
}
}
真棒!像魅力一樣工作!謝謝你一噸先生! – Swayam
'String jsonFormattedString = jsonStr.replace('\\','');'因爲您沒有雙重轉義而更容易。 Docs說:返回一個新字符串,它是用newChar替換這個字符串中的所有oldChar。 –
@mikejones如果你從問題中注意到,那是OP最初做的事,它不起作用。 –