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是否可以设置为 http 正文而不是编码字符串？

  NSData *postData = [postString dataUsingEncoding:NSUTF8StringEncoding allowLossyConversion:YES];

  NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]];

  [request setValue:postLength forHTTPHeaderField:@"Content-Length"];
  [request setHTTPBody:postData];

是否有可能做这样的事情：

  NSString *postLength = [NSString stringWithFormat:@"%d", [postString length]];
  [request setValue:postLength forHTTPHeaderField:@"Content-Length"];
  [request setHTTPBody:postString];

我试过这个并得到一个错误：由于未捕获的异常'NSInvalidArgumentException'而终止应用程序，原因：'-[__NSCFString bytes]：无法识别的选择器发送到实例

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1 回答 1

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[request setHTTPBody:postString];

应该

[request setHTTPBody:postData];
于 2012-08-10T13:46:45.537 回答