iOS HTML解析问题
问题描述：
我已经在我的项目中实现了HTMLParser。我连接到计费网站到我的手机运营商，我需要解析不同的变量。iOS HTML解析问题
从HTML内容
我需要得到一个标记，它给我的指示，如果用户名和密码是不正常，并显示一个警告用户。
NSArray *spanNodes = [bodyNode findChildTags:@"div"];
for (HTMLNode *spanNode in spanNodes) {
if ([[spanNode getAttributeNamed:@"class"] isEqualToString:@"notification-item notification-item-error"]) {
//Above my tag
[self alertMessageLogin];
NSLog(@"%@", [spanNode rawContents]); //Answer to second question
}
else {
NSlog(@"You are not logged in");
}
}
但是，如果我再次加入到这个代码，所以我需要检查其他任何标记的“通知项目通知项错误”，所以给我另一种看法。
在我的情况下，if后，我的代码是由某种原因要else，所以我的代码认为if条件是假，要到else条件。但没有else所有工作正常。这是我的日志从else。我不知道，为什么它会打印几个“您已登录”？
如何解决此问题？
2013-04-09 23:48:50.828 GolanTelecom[90143:c07] You are logged in
2013-04-09 23:48:50.830 GolanTelecom[90143:c07] You are logged in
2013-04-09 23:48:50.830 GolanTelecom[90143:c07] You are logged in
2013-04-09 23:48:50.830 GolanTelecom[90143:c07] You are logged in
2013-04-09 23:48:50.830 GolanTelecom[90143:c07] You are logged in
2013-04-09 23:48:50.831 GolanTelecom[90143:c07] You are logged in
2013-04-09 23:48:50.831 GolanTelecom[90143:c07] You are logged in
2013-04-09 23:48:50.831 GolanTelecom[90143:c07] You are logged in
2013-04-09 23:48:50.832 GolanTelecom[90143:c07] You are logged in
2013-04-09 23:48:50.832 GolanTelecom[90143:c07] You are logged in
2013-04-09 23:48:50.832 GolanTelecom[90143:c07] You are logged in
2013-04-09 23:48:50.833 GolanTelecom[90143:c07] You are logged in
2013-04-09 23:48:50.833 GolanTelecom[90143:c07] You are logged in
2013-04-09 23:48:50.833 GolanTelecom[90143:c07] You are logged in
2013-04-09 23:48:50.833 GolanTelecom[90143:c07] You are logged in
2013-04-09 23:48:50.834 GolanTelecom[90143:c07] You are logged in
2013-04-09 23:48:50.834 GolanTelecom[90143:c07] <div
class="notification-item notification-item-error"><div
class="notification-item-inner"><span
class="notification-content">???? ???? ?? ?????
??????</span></div></div> 2013-04-09 23:48:50.834
GolanTelecom[90143:c07] You are logged in 2013-04-09 23:48:50.835
GolanTelecom[90143:c07] You are logged in 2013-04-09 23:48:50.835
GolanTelecom[90143:c07] You are logged in 2013-04-09 23:48:50.835
GolanTelecom[90143:c07] You are logged in
答
这里是工作代码：
NSError *error = nil;
NSString *html = str;
HTMLParser *parser = [[HTMLParser alloc] initWithString:html error:&error];
if (error) {
NSLog(@"Error: %@", error);
return;
}
HTMLNode *bodyNode = [parser body];
NSArray *spanNodes = [bodyNode findChildTags:@"div"];
BOOL found = NO;
for (HTMLNode *spanNode in spanNodes) {
if ([[spanNode getAttributeNamed:@"class"] isEqualToString:@"notification-item notification-item-error"]) {
[self alertMessageLogin];
found = YES;
NSLog(@"%@", [spanNode rawContents]);
break;
}
}
if (NO == found) {
//NSLog(@"Hey, I'm here!");
[self HideLoginScreenWhenLogged];
}
}
用'else'分支中的代码会有所帮助。 – 2013-04-09 22:42:50
Hi A-Live我已经添加了其他例子 – Anton 2013-04-10 05:30:07
我既不能NSLog登录'你已经登录'或者没有登录'你没有登录'。很难理解不完整的代码有什么问题。您可能想要尝试记录（或观看）'[spanNode getAttributeNamed：@“class”]'的值。 – 2013-04-10 08:04:30