在 UIWebView 中打开的 HTML 页面中自动填充用户名和密码 [英] autofill username and password in an HTML page opening in UIWebView

问题描述

如何在使用 UIWebView 自动填充数据时使用 RegsEx 查找登录表单?

How to find login form using RegsEx when using UIWebView to autofill data ?

我使用以下代码来获取所有表单数据:

I have used following code to get all form data:

int NoOfForms = [[self.browser stringByEvaluatingJavaScriptFromString:@"document.forms.length"] intValue];

NSMutableArray *formData = [[NSMutableArray alloc] initWithCapacity:0];

for (int i = 0 ;  i < NoOfForms ; i++) 
{
    // total number of elements in each form
    int elementsInForm = [[self.browser stringByEvaluatingJavaScriptFromString:[NSString stringWithFormat:@"document.forms[%d].elements.length",i]] intValue];
    for (int j = 0; j < elementsInForm; j++) 
    {
        // element id of each element
        NSString *elementID = [NSString stringWithFormat:@"document.forms[%d].elements[%d].id",i,j];
        // element value of each element
        NSString *elementValue = [NSString stringWithFormat:@"document.forms[%d].elements[%d].value",i,j];

        // dictionary for all values of each element  
        NSDictionary *elementData = [NSDictionary dictionaryWithObjectsAndKeys:
                                     [NSNumber numberWithInt:i],@"form No",
                                     [NSNumber numberWithInt:j],@"element No",
                                     [self.browser stringByEvaluatingJavaScriptFromString:elementID],@"elementID",
                                     [self.browser stringByEvaluatingJavaScriptFromString:elementValue],@"elementValue",nil];

        // add each element data to a mutable array.
        [formData addObject:elementData];
    }
}

并使用以下代码将数据放回各自的字段:

And have the following code to put data back into their respective fields:

for (int i = 0 ; i < [dataArray count]; i++) 
{
    NSDictionary *elementDict = [dataArray objectAtIndex:i];

    int formNumber = [[elementDict objectForKey:@"form No"] intValue];
    int elementNumber = [[elementDict objectForKey:@"element No"] intValue];
    NSString *formElementID = [elementDict objectForKey:@"elementID"];
    NSString *formElementValue = [elementDict objectForKey:@"elementValue"];

    if ([[self.browser stringByEvaluatingJavaScriptFromString:[NSString stringWithFormat:@"document.forms[%d].elements[%d].id",formNumber,elementNumber]] isEqualToString:formElementID])
     {
          [self.browser stringByEvaluatingJavaScriptFromString:[NSString stringWithFormat:@"document.forms[%d].elements[%d].value='%@'",formNumber,elementNumber,formElementValue]];
     }

}

现在我只想提交登录表单..如何找到它?

Now i want to submit only the login form..how to find it ?

我遇到了另一个问题:当我的代码将密码放入其字段时，一些网站(例如 mail.google.com)确实允许这种情况发生，即它会清空密码字段.如何解决这个问题?

I'm experiencing one more problem: when my code puts password into its field, some web sites like mail.google.com does let this happen i.e. it empties the password field. How to solve this problem ?

更新:目前我已经能够登录 mail.google.com，但无法登录 belleandclive.com.此站点是否对其登录表单实施了任何安全措施?

UPDATE : currently i have been able to log in on mail.google.com but could not get done the same for belleandclive.com . Is this site implementing any security measurements for its login form ?

推荐答案

我觉得你可以根据表单数据或者表单id来判断哪个是登录表单，对吧?

I think you can judge which is the login form according to the form data or form id, right?

所以，如果登录表单id是login-form，可以使用如下代码提交:

So, if the login form id is login-form, you can use the following code to submit it:

NSString * js = @"document.getElementById('login-form').submit()";
[self.webview stringByEvaluatingJavaScriptFromString:js];

也可以通过表单数据判断哪个索引是登录表单来提交表单:

or you can sumbit the form through judging which index is login form according the form data:

int index = ....// your judge code to get index
NSString * js = [NSString stringWithFormat:@"document.forms[%d].submit()", index];
[self.webview stringByEvaluatingJavaScriptFromString:js];

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