UIWebView在网页加载时显示错误，Safari显示完美

发布于 2024-10-24 22:11:27 字数 1170 浏览 1 评论 0原文

问题是网站在 UIWebView 中无法完全加载，但在 Safari 中可以正常加载。

这是我在 UIWebView 中加载网站时遇到的错误：

警告： cos_before_render(/home/user/ctown/doc_wbn//../sys/swt/www.westspringsec.moe.edu.sg.mob) [function.cos-before-render]：失败打开流：没有这样的文件或目录在 /home/user/ctown/cti_bin/wbn/cos_init.inc 在第 731 行
警告：cos_before_render() [function.include]：打开失败 '/home/user/ctown/doc_wbn//../sys/swt/www.westspringsec.moe.edu.sg.mob' 纳入 (include_path='.:/home/user/ctown/cti_bin/phplot:/usr/local/lib/php') 在 /home/user/ctown/cti_bin/wbn/cos_init.inc 在线 731
致命错误：调用未定义函数： json_encode() 中 /home/user/ctown/cti_bin/wbn/cos_init.inc 在线 737

- (void)viewDidLoad {
    NSString *urlAddress = @"http://www.westspringsec.moe.edu.sg";
    NSURL *url = [NSURL URLWithString:urlAddress];
    NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];
    [Webview loadRequest:requestObj];
    [super viewDidLoad];
}

我尝试了下面链接的问题，但是我无法修改网站的后端！

UIWebView Xhmtl 解析错误，但 safari 没有

原文

The problem is that the website doesn't fully load in a UIWebView, but it loads normally in Safari.

This is the error I get when loading the website in a UIWebView:

Warning:
cos_before_render(/home/user/ctown/doc_wbn//../sys/swt/www.westspringsec.moe.edu.sg.mob)
[function.cos-before-render]: failed
to open stream: No such file or
directory in
/home/user/ctown/cti_bin/wbn/cos_init.inc
on line 731
Warning: cos_before_render()
[function.include]: Failed opening
'/home/user/ctown/doc_wbn//../sys/swt/www.westspringsec.moe.edu.sg.mob'
for inclusion
(include_path='.:/home/user/ctown/cti_bin/phplot:/usr/local/lib/php')
in
/home/user/ctown/cti_bin/wbn/cos_init.inc
on line 731
Fatal error: Call to undefined
function: json_encode() in
/home/user/ctown/cti_bin/wbn/cos_init.inc
on line 737

- (void)viewDidLoad {
    NSString *urlAddress = @"http://www.westspringsec.moe.edu.sg";
    NSURL *url = [NSURL URLWithString:urlAddress];
    NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];
    [Webview loadRequest:requestObj];
    [super viewDidLoad];
}

I tried the question linked below, however I can't modify the backend of the website!

UIWebView Xhmtl parse error but safari don't

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望她远 2024-10-31 22:11:27

错误不在您的代码中！ UIWebView，特别是在模拟器中，使用如下用户代理：

Mozilla/5.0（iPhone Simulator；U；CPU iPhone OS 4_2，如 Mac OS X；en-us）AppleWebKit/533.17.9（KHTML，如 Gecko）Mobile /8C134

当您调用该 url 时，它会导致您看到的错误。这是服务器端错误。

您可以使用此代码更改您的用户代理，将其放在应用程序启动阶段的某个位置，这样它只设置一次：

NSDictionary *dictionnary = [[NSDictionary alloc] initWithObjectsAndKeys:@"Safari/528.16", @"UserAgent", nil];
[[NSUserDefaults standardUserDefaults] registerDefaults:dictionnary];
[dictionnary release];

有了这个，我就可以打开您的页面。看起来该网站为 iPhone 返回了不同的标记，因此上面代码的结果将显示该网站，对于小显示屏来说有点大。

The error is not within your code! The UIWebView, especially from within the simulator uses a user agent something like this:

Mozilla/5.0 (iPhone Simulator; U; CPU iPhone OS 4_2 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Mobile/8C134

When you call the url provided it results in the error you are seeing. It's a server side error.

You can alter your user agent by using this code, put it somewhere in the startup phase of your app so it's only set once:

NSDictionary *dictionnary = [[NSDictionary alloc] initWithObjectsAndKeys:@"Safari/528.16", @"UserAgent", nil];
[[NSUserDefaults standardUserDefaults] registerDefaults:dictionnary];
[dictionnary release];

With this I was able to open your page. It looks like the site returns different markup for the iphone, so the result with the code above will show the website, which is a bit large for the small display.

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小清晰的声音 2024-10-31 22:11:27

UIWebView 和 Safari 没有相同的用户代理。

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囚我心虐我身 2024-10-31 22:11:27

这个答案不会解决您的问题（请参阅尼克的答案），但您应该在执行其他操作之前放置 [super viewDidLoad]; 。所以：

- (void)viewDidLoad {
    [super viewDidLoad];
    NSString *urlAddress = @"http://www.westspringsec.moe.edu.sg";
    NSURL *url = [NSURL URLWithString:urlAddress];
    NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];
    [Webview loadRequest:requestObj];
}

This answer won't fix your issue (see Nick's answer), but you should put [super viewDidLoad]; before you do anything else. So:

- (void)viewDidLoad {
    [super viewDidLoad];
    NSString *urlAddress = @"http://www.westspringsec.moe.edu.sg";
    NSURL *url = [NSURL URLWithString:urlAddress];
    NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];
    [Webview loadRequest:requestObj];
}

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