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[英]Why does this UTF-16 HTTP response end up as UTF-8 when in the resulting Stream?
[英]Response 500 when sending utf-8
當我使用utf-8特殊字符(例如“Ö”)向我的Web服務發送請求時,它返回響應500“處理請求時出錯”。這就是我在iOS應用中登錄的內容。
- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
NSError *error = nil;
dict = [[CJSONDeserializer deserializer] deserializeAsDictionary:self.responseData error:&error];
for (id key in dict) {
NSLog(@"%@=%@", key, [dict objectForKey:key]);
}
如果我只用普通的英語發送消息,則效果很好。
我不確定錯誤是在服務器端還是在應用程序本身中。 這就是我發送JSON POST的方式:
- (void)stringWithUrl:(NSURL *)url jsonReq:(NSString *)json{
self.requestURL = [[[NSMutableURLRequest alloc] initWithURL:url] autorelease];
self.responseData = [NSData dataWithBytes:[json UTF8String] length:[json length]];
[self.requestURL setHTTPMethod:@"POST"];
[self.requestURL setValue:@"application/json" forHTTPHeaderField:@"Accept"];
[self.requestURL setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
[self.requestURL setValue:@"application/json" forHTTPHeaderField:@"UTF-8"];
[self.requestURL setValue:[NSString stringWithFormat:@"%d", [self.responseData length]] forHTTPHeaderField:@"Content-Length"];
[self.requestURL setHTTPBody: self.responseData];
這是Web服務的外觀:
....
[WebService(Namespace = "http://mypage.com/webservicesF")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.ComponentModel.ToolboxItem(false)]
// To allow this Web Service to be called from script, using ASP.NET AJAX,
[System.Web.Script.Services.ScriptService]
.....
[WebMethod]
[ScriptMethod(ResponseFormat = ResponseFormat.Json)]
嘗試在發送之前進行編碼,例如:
NSString *strEncode = [src stringByAddingPercentEscapesUsingEncoding:NSUnicodeStringEncoding];
這行:
self.responseData = [NSData dataWithBytes:[json UTF8String] length:[json length]];
是不正確的。 NSString
的長度為UTF-16字符,而不是UTF-8字符。 您可以執行以下操作:
const char* utf8 = [json UTF8String];
self.responseData = [NSData dataWithBytes:utf8 length:strlen(utf8)];
但是更好的方法是讓字符串直接創建NSData
,而無需通過C樣式的字符串。
self.responseData = [json dataUsingEncoding:NSUTF8StringEncoding];
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