ios項目開發（天氣預報項目）：使用正則擷取 weather.com.cn網站資訊

標籤：天氣預報   項目開發   

[objc] view plaincopyprint?在CODE上查看代碼片派生到My Code片<pre code_snippet_id="346208" snippet_file_name="blog_20140515_1_2220869" name="code" class="cpp">- (NSString *)hmacsha1:(NSString *)text key:(NSString *)secret {     NSData *secretData = [secret dataUsingEncoding:NSUTF8StringEncoding];     NSData *clearTextData = [text dataUsingEncoding:NSUTF8StringEncoding];     unsigned char result[20];     CCHmac(kCCHmacAlgSHA1, [secretData bytes], [secretData length], [clearTextData bytes], [clearTextData length], result);          char base64Result[32];     size_t theResultLength = 32;     Base64EncodeData(result, 20, base64Result, &theResultLength);     NSData *theData = [NSData dataWithBytes:base64Result length:theResultLength];          NSString *base64EncodedResult = [[NSString alloc] initWithData:theData encoding:NSASCIIStringEncoding];          return base64EncodedResult; }</pre><br> <br> <pre></pre>