摘要： 在请求服务器时，如果参数中带有中文字符。就会报参数格式错误，需要将其转换成UTF8@interface NSString (NSURLUtilities)/* Adds all percent escapes necessary to convert the receiver into a legal URL string. Uses the given encoding to determine the correct percent escapes (returning nil if the given encoding cannot encode a particular charact 阅读全文