解析XML时过滤空格等特殊符号防止出错的代码

iPhone 应用里解析 XML 时遇到空格等特殊符号容易出错，最彻底的解决方法就是将其过滤，下面这段代码不是最优的，但能给大家一点提示

//去特殊符号

- (NSMutableData *)replaceHtmlEntities:(NSMutableData *)data

{

NSString *htmlCode = [[NSString alloc] initWithData:data encoding:NSISOLatin1StringEncoding];

NSMutableString *temp = [NSMutableString stringWithString:htmlCode];

[temp replaceOccurrencesOfString:@"&" withString:@"&" options:NSLiteralSearch range:NSMakeRange(0, [temp length])];

[temp replaceOccurrencesOfString:@" " withString:@" " options:NSLiteralSearch range:NSMakeRange(0, [temp length])];

[temp replaceOccurrencesOfString:@"À" withString:@"à" options:NSLiteralSearch range:NSMakeRange(0, [temp length])];

NSData *finalData = [temp dataUsingEncoding:NSISOLatin1StringEncoding];

[data setData:finalData];

[htmlCode release];

return data;

}