应用程序中的错误代码5

Question

我开发了一个应用程序来获取RSS提要。我收到了一些URL的错误代码5，其中som其他工作正常。

我知道这个错误意味着xml无效。但对于我的应用程序，我没有自己编写任何xml文件。

请告诉我可能的原因并让我知道解决方案

导入“RootViewController.h”

@implementation RootViewController

• （无效）viewDidAppear：（BOOL）动画{

[super viewDidAppear：animated];

if（[stories count] == 0）{

    path = @"http://172.19.58.108:8080/jwplayer/JSP/Videolist.jsp";
    [self parseXMLFileAtURL:path];
}

}

- （void）parseXMLFileAtURL：（NSString *）URL {

stories = [[NSMutableArray alloc]init];
NSURL *xmlURL = [NSURL URLWithString:URL];
rssParser = [[NSXMLParser alloc]initWithContentsOfURL:xmlURL];
[rssParser setDelegate:self];
[rssParser setShouldProcessNamespaces:NO];
[rssParser setShouldReportNamespacePrefixes:NO];
[rssParser setShouldResolveExternalEntities:NO];
[rssParser parse];

}

- （void）parserDidStartDocument：（NSXMLParser *）解析器{

NSLog(@"Found file and started parsing");

}

- （void）parser：（NSXMLParser *）parser parseErrorOccurred：（NSError *）parseError {

NSString *errorString = [NSString stringWithFormat:@"Unable to download story feed from website (Error Code %i)", [parseError code]];
NSLog(@"Error parsing xml: %@", errorString);
UIAlertView *errorAlert = [[UIAlertView alloc]initWithTitle:@"Error loading content" message:errorString delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
[errorAlert show];

}

- （void）解析器：（NSXMLParser *）解析器didStartElement：（NSString *）elementName namespaceURI：（NSString *）namespaceURI qualifiedName：（NSString *）qName attributes：（NSDictionary *）attributeDict {

currentElement = [elementName copy];
if ([elementName isEqualToString:@"item"]) {

    item = [[NSMutableDictionary alloc]init];
    currentTitle = [[NSMutableString alloc]init];
    currentDate = [[NSMutableString alloc]init];
    currentSummary = [[NSMutableString alloc]init];
    currentLink = [[NSMutableString alloc]init];
}

}

- （void）parser：（NSXMLParser *）parser didEndElement：（NSString *）elementName namespaceURI：（NSString *）namespaceURI qualifiedName：（NSString *）qName {

if ([elementName isEqualToString:@"item"]) {

    [item setObject:currentTitle forKey:@"title"];
    [item setObject:currentDate forKey:@"date"];
    [item setObject:currentSummary forKey:@"summary"];
    [item setObject:currentLink forKey:@"link"];
    [stories addObject:[item copy]];
    NSLog(@"adding story: %@", currentTitle);
}

}

- （void）parser：（NSXMLParser *）parser foundCharacters：（NSString *）string {

if ([currentElement isEqualToString:@"title"]) {

    [currentTitle appendString:string];
}
else if ([currentElement isEqualToString:@"link"]) {

    [currentLink appendString:string];
}
else if ([currentElement isEqualToString:@"description"]) {

    [currentSummary appendString:string];
}
else if ([currentElement isEqualToString:@"pubDate"]) {

    [currentDate appendString:string];
}

}

- （void）parserDidEndDocument：（NSXMLParser *）解析器{

[activityIndicator stopAnimating];
[activityIndicator removeFromSuperview];
NSLog(@"all done");
NSLog(@"stories array has %d items", [stories count]);
[newsTable reloadData];

}

Answer 1

请检查您的库类以获取Rss Feed解析。使用标准库类，相应地更改代码。