在 NSString 中发布两个键值对

Question

我正尝试在 NSURLCconnection 中使用 POST 在服务器上 post 登录信息。我必须将两个键值对设置为 emailIdSignIn:abc@def.com 和 passwordSignIn:xxxxxxx。但问题是，我在服务器上只得到 emailIdSignIn 值， emailIdSignIn 字段中附加了 passwordSignIn 的值，而 passwordSignIn 为零。我也尝试过 NSDictionary 但在那种情况下在两个字段中都得到了 null。我无法更改服务器端代码。这是我的代码 客户端

 /* initiating request with the url */
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"http://192.168.1.2:8080/referamaid/app/noauth/serviceconsumer/login"]];

    NSString *loginData = [NSString stringWithFormat:@"emailIdSignIn=%@,passwordSignIn=%@",[self.emailTextField text],[self.passwordTextField text],nil];

    NSLog(@"login data = %@", loginData);


    NSData *postData = [loginData dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
    NSError *error;

    NSString *postLength = [NSString stringWithFormat:@"%lu", [postData length]];

    /* specify the request type */

    [request setHTTPMethod:@"POST"];


    [request setValue:postLength forHTTPHeaderField:@"Content-Length"];

    [request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];

    /* set the data to be posted on server into body for "POST"*/

    [request setHTTPBody:postData];

    NSLog(@"posted data = %@", postData);

    /* inititate connection between app and server*/

    NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self startImmediately:NO];
    [connection scheduleInRunLoop:[NSRunLoop mainRunLoop]
                          forMode:NSDefaultRunLoopMode];

    [connection start];
    if(!connection)
    {
        // Release the receivedData object.

        receivedData = nil;

        // Inform the user that the connection failed.
    }
}
}

服务器端代码

@RequestMapping(value = "noauth/serviceconsumer/login"  , method=RequestMethod.POST)
public String noAuthScLogin(HttpServletRequest request) {
    String retVal = null;
    ObjectMapper objectMapper = new ObjectMapper();
    try {
        userAgent = request.getHeader("User-Agent");

        String emailId = request.getParameter("emailIdSignIn");
        String password = request.getParameter("passwordSignIn");
}
}

Answer 1

来自Wiki：

When a web browser sends a POST request from a web form element, the default Internet media type is "application/x-www-form-urlencoded".[8] This is a format for encoding key-value pairs with possibly duplicate keys. Each key-value pair is separated by an '&' character, and each key is separated from its value by an '=' character. Keys and values are both escaped by replacing spaces with the '+' character and then using URL encoding on all other non-alphanumeric[9] characters.

所以你需要使用 & 字符而不是 ,:

NSString *loginData = [NSString stringWithFormat:@"emailIdSignIn=%@&passwordSignIn=%@",[self.emailTextField text],[self.passwordTextField text]];

在 NSString 中发布两个键值对

posting two key-value pair in NSString

objective-c

nsstring

nsurlconnection

ios