Question

我正在使用AFNetworking框架，需要向服务器提交表单（POST）请求。以下是服务器期望的示例：

<form id="form1" method="post" action="http://www.whereq.com:8079/answer.m">
    <input type="hidden" name="paperid" value="6">
    <input type="radio" name="q77" value="1">
    <input type="radio" name="q77" value="2">
    <input type="text" name="q80">
</form>

我考虑在AFHTTPClient中使用multipartFormRequestWithMethod，就像在帖子Sending more than one image with AFNetworking中讨论的那样。但我不知道如何使用“radio”类型输入值附加表单数据。

Answer 1

以下是使用NSURLConnection发送POST参数的示例：

// Note that the URL is the "action" URL parameter from the form.
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"http://www.whereq.com:8079/answer.m"]];
[request setHTTPMethod:@"POST"];
[request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"content-type"];
//this is hard coded based on your suggested values, obviously you'd probably need to make this more dynamic based on your application's specific data to send
NSString *postString = @"paperid=6&q77=2&q80=blah";
NSData *data = [postString dataUsingEncoding:NSUTF8StringEncoding];
[request setHTTPBody:data];
[request setValue:[NSString stringWithFormat:@"%u", [data length]] forHTTPHeaderField:@"Content-Length"];
[NSURLConnection connectionWithRequest:request delegate:self];

Answer 2

如果您在使用此表单（使用浏览器中的调试面板）时查看浏览器提交给服务器的内容，您会看到您的POST请求数据如下所示：

paperid=6&q77=2&q80=blah

即所选单选按钮的值条目用作相应POST条目的值，并且您只获得所有单选按钮的一个条目。（与切换按钮相反，您可以在其中获取当前所选每个的值。）

了解POST字符串的格式后，您应该能够使用ASIFormDataRequest以通常的方式创建请求。

Answer 3

以下是STHTTPRequest

的使用方法

STHTTPRequest *r = [STHTTPRequest requestWithURLString:@"http://www.whereq.com:8079/answer.m"];

r.POSTDictionary = @{ @"paperid":@"6", @"q77":"1", @"q80":@"hello" };

r.completionBlock = ^(NSDictionary *headers, NSString *body) {
    // ...
};

r.errorBlock = ^(NSError *error) {
    // ...
};

[r startAsynchronous];

如何在iOS上模拟HTTP表单（POST）提交

3 个答案: