示例代码
urlString = [NSString stringWithFormat:@"%@%@",BASEURL,self.uid];
NSURL * url = [NSURL URLWithString:urlString];
NSString * body = [NSString stringWithFormat:@"token=%@",token];
NSMutableURLRequest * request = [[NSMutableURLRequest alloc] initWithURL:url];
[request setHTTPMethod:@"POST"];
[request setHTTPBody:[body dataUsingEncoding:NSUTF8StringEncoding]];
[webView loadRequest:request];
