对于GET请求，我尝试过这个简单的方法：
NSString *urlAddress = @"http://example.com/";
NSURL *url = [NSURL URLWithString:urlAddress];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
[uiWebViewThingy loadRequest:request];
（虽然如果请求包含高UTF-8字符似乎不起作用。）
我想从iPhone发送一个POST。
这也给出了sending POST/GET requests的概述，虽然我真正想做的是将生成的网页嵌入到UIWebView中。最好的办法是什么？
答案 0 :(得分：13)
您可以使用NSMutableURLRequest，将HTTP方法设置为POST，然后使用-loadRequest将其加载到UIWebView中。
答案 1 :(得分：10)
谢谢你回答Seva。 我已经用你的代码制作了一个方法，希望这有助于其他人：）
//-------------------------------------------------------------------
// UIWebViewWithPost
// init a UIWebview With some post parameters
//-------------------------------------------------------------------
- (void)UIWebViewWithPost:(UIWebView *)uiWebView url:(NSString *)url params:(NSMutableArray *)params
{
NSMutableString *s = [NSMutableString stringWithCapacity:0];
[s appendString: [NSString stringWithFormat:@"<html><body onload=\"document.forms[0].submit()\">"
"<form method=\"post\" action=\"%@\">", url]];
if([params count] % 2 == 1) { NSLog(@"UIWebViewWithPost error: params don't seem right"); return; }
for (int i=0; i < [params count] / 2; i++) {
[s appendString: [NSString stringWithFormat:@"<input type=\"hidden\" name=\"%@\" value=\"%@\" >\n", [params objectAtIndex:i*2], [params objectAtIndex:(i*2)+1]]];
}
[s appendString: @"</input></form></body></html>"];
//NSLog(@"%@", s);
[uiWebView loadHTMLString:s baseURL:nil];
}
使用它
NSMutableArray *webViewParams = [NSMutableArray arrayWithObjects:
@"paramName1", @"paramValue1",
@"paramName2", @"paramValue2",
@"paramName3", @"paramValue3",
nil];
[self UIWebViewWithPost:self.webView url:@"http://www.yourdomain.com" params:webViewParams];
答案 2 :(得分：5)
（编辑原始答案，包括新测试的代码）
我只是想放弃我的此请求版本。我用字典来表示帖子参数。
这是一大块代码，但很简单，可以放入带有webview的视图，并用于所有URL加载。如果您发送“postDictionary”，它将只发布POST。否则它将使用您发送的网址来获取内容。
- (void) loadWebView:(UIWebView *)theWebView withURLString:(NSString *)urlString andPostDictionaryOrNil:(NSDictionary *)postDictionary {
NSURL *url = [NSURL URLWithString:urlString];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url
cachePolicy:NSURLRequestReloadIgnoringCacheData
timeoutInterval:60.0];
// DATA TO POST
if(postDictionary) {
NSString *postString = [self getFormDataString:postDictionary];
NSData *postData = [postString dataUsingEncoding:NSUTF8StringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]];
[request setHTTPMethod:@"POST"];
[request setValue:postLength forHTTPHeaderField:@"Content-Length"];
[request setValue:@"application/x-www-form-urlencoded; charset=utf-8" forHTTPHeaderField:@"Content-Type"];
[request setHTTPBody:postData];
}
[theWebView loadRequest:request];
}
- (NSString *)getFormDataString:(NSDictionary*)dictionary {
if( ! dictionary) {
return nil;
}
NSArray* keys = [dictionary allKeys];
NSMutableString* resultString = [[NSMutableString alloc] init];
for (int i = 0; i < [keys count]; i++) {
NSString *key = [NSString stringWithFormat:@"%@", [keys objectAtIndex: i]];
NSString *value = [NSString stringWithFormat:@"%@", [dictionary valueForKey: [keys objectAtIndex: i]]];
NSString *encodedKey = [self escapeString:key];
NSString *encodedValue = [self escapeString:value];
NSString *kvPair = [NSString stringWithFormat:@"%@=%@", encodedKey, encodedValue];
if(i > 0) {
[resultString appendString:@"&"];
}
[resultString appendString:kvPair];
}
return resultString;
}
- (NSString *)escapeString:(NSString *)string {
if(string == nil || [string isEqualToString:@""]) {
return @"";
}
NSString *outString = [NSString stringWithString:string];
outString = [outString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
// BUG IN stringByAddingPercentEscapesUsingEncoding
// WE NEED TO DO several OURSELVES
outString = [self replace:outString lookFor:@"&" replaceWith:@"%26"];
outString = [self replace:outString lookFor:@"?" replaceWith:@"%3F"];
outString = [self replace:outString lookFor:@"=" replaceWith:@"%3D"];
outString = [self replace:outString lookFor:@"+" replaceWith:@"%2B"];
outString = [self replace:outString lookFor:@";" replaceWith:@"%3B"];
return outString;
}
- (NSString *)replace:(NSString *)originalString lookFor:(NSString *)find replaceWith:(NSString *)replaceWith {
if ( ! originalString || ! find) {
return originalString;
}
if( ! replaceWith) {
replaceWith = @"";
}
NSMutableString *mstring = [NSMutableString stringWithString:originalString];
NSRange wholeShebang = NSMakeRange(0, [originalString length]);
[mstring replaceOccurrencesOfString: find
withString: replaceWith
options: 0
range: wholeShebang];
return [NSString stringWithString: mstring];
}
答案 3 :(得分：3)
您可以使用类似ASIHTTPRequest的内容来发出POST请求（选择异步执行），然后将响应字符串/数据加载到UIWebView中。请在标题为使用POST或PUT请求发送数据的部分下查看this page，然后查看顶部的创建异步请求部分，了解有关如何使用的信息处理响应字符串/数据。
希望有帮助，对不起，如果我误解了你的问题。
答案 4 :(得分：2)
使用loadHTMLString，将页面提供给具有隐藏的预填充形式的UIWebView，然后在加载时使该页面执行Javascript表单[0] .submit（）。
编辑：首先，您将输入收集到变量中。然后你像这样编写HTML：
NSMutableString *s = [NSMutableString stringWithCapacity:0];
[s appendString: @"<html><body onload=\"document.forms[0].submit()\">"
"<form method=\"post\" action=\"http://someplace.com/\">"
"<input type=\"hidden\" name=\"param1\">"];
[s appendString: Param1Value]; //It's your variable
[s appendString: @"</input></form></body></html>"];
然后将其添加到WebView：
[myWebView loadHTMLString:s baseURL:nil];
它将使WebView加载表单，然后立即提交它，从而向someplace.com执行POST请求（您的URL会有所不同）。结果将显示在WebView中。
表单的具体内容取决于您......
答案 5 :(得分：0)
创建POST URLRequest并使用它来填充webView
NSURL *url = [NSURL URLWithString: @"http://your_url.com"];
NSString *body = [NSString stringWithFormat: @"arg1=%@&arg2=%@", @"val1",@"val2"];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc]initWithURL: url];
[request setHTTPMethod: @"POST"];
[request setHTTPBody: [body dataUsingEncoding: NSUTF8StringEncoding]];
[webView loadRequest: request];
答案 6 :(得分：0)
这是Swva版本的Seva Alekseyev的答案，对我来说非常合适。谢谢你的好朋友！ BTW以下代码在Swift 3.1中。
fileprivate func prepareDataAndSubmitForRepayment(parameters paramData: [String: Any]) {
var stringObj = String()
stringObj.append("<html><head></head>")
stringObj.append("<body onload=\"payment_form.submit()\">")
stringObj.append("<form id=\"payment_form\" action=\"\(urlString)\" method=\"post\">") //urlString is your server api string!
for object in paramData { //Extracting the parameters for request
stringObj.append("<input name=\"\(object.key)\" type=\"hidden\" value=\"\(object.value)\">")
}
stringObj.append("</form></body></html>")
debugPrint(stringObj)
webviewToLoadPage?.loadHTMLString(stringObj, baseURL: nil)
}