NSMutableURLRequest获取的NSString中的管道 [英] Pipes in NSString fetched by NSMutableURLRequest

问题描述

我有以下方法可以从网络服务器获取名为parsertest.html的文件的内容.但是，大约每5次运行程序一次，读取到的NSString在末尾包含一行管道

I have the following method to get the content of a file called parsertest.html from a webserver. However about one every 5 times i run my program, the fetched NSString contains a line of pipes at the end

|||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||

||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||

这是我的代码:

-(NSString *)fetchTest
 {


NSURL* url = [NSURL URLWithString:@"http://www.mywebserver.com/parsertest.html"];


NSMutableURLRequest* request = [[NSMutableURLRequest alloc] initWithURL:url];
[request setValue:scraperUserAgent forHTTPHeaderField:@"User-Agent"];

NSURLResponse* response = nil;
NSError* error = nil;
NSData* data = [NSURLConnection sendSynchronousRequest:request
                                     returningResponse:&response
                                                 error:&error];

NSString *dataInStringFormat = [NSString stringWithUTF8String:[data bytes]];


NSLog(@"%@",dataInStringFormat);
return dataInStringFormat;

}

scraperUserAgent设置为"Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:15.0) Gecko/20100101 Firefox/15.0"

scraperUserAgent is set to "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:15.0) Gecko/20100101 Firefox/15.0"

这是parsertest.html的内容

This is the content of parsertest.html

<parse>HELLO</parse>
<parse>World</parse>
<parse>digit</parse>
<parse>wow</parse>
<parse>hellonewitem</parse>
<parse>lastitem</parse>

这是发生错误时NSLog的完整输出:

this is the complete output of NSLog when the error occurs:

<parse>HELLO</parse>
<parse>World</parse>
<parse>digit</parse>
<parse>wow</parse>
<parse>hellonewitem</parse>
<parse>lastitem</parse>
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||

感谢您的帮助！

Matthias

推荐答案

stringWithUTF8String期望以NULL终止的C字符串，但[data bytes]并非以NULL终止的字符串.使用

stringWithUTF8String expects a NULL-terminated C string, but [data bytes] is not NULL-terminated. Use

NSString *dataInStringFormat = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];

相反.

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