objectc NSMutableURLRequest模拟表单提交

NSMutableURLRequest *urlRequest = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:url]];

 

 

    [urlRequest setHTTPMethod:@"POST"];

 

    [urlRequest setValue: [NSString stringWithFormat:@"multipart/form-data; boundary=%@", BOUNDRY]

 

      forHTTPHeaderField:@"Content-Type"];

 

 

 

 

int len=512;

 

if(imageData !=nil){

 

len = imageData.length + 512;

 

}

 

NSMutableData  * postData =[NSMutableData dataWithCapacity:len];

 

 

[postData  appendData: [[NSString  stringWithFormat:@"--%@\r\n",BOUNDRY] dataUsingEncoding:NSUTF8StringEncoding]];

 

[postData  appendData: [[NSString  stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"\r\n\r\n",@"token" ] dataUsingEncoding:NSUTF8StringEncoding]];

 

[postData  appendData: [[NSString  stringWithFormat:@"%@",user.token] dataUsingEncoding:NSUTF8StringEncoding]];

 

[postData  appendData: [[NSString  stringWithFormat:@"\r\n--%@\r\n",BOUNDRY] dataUsingEncoding:NSUTF8StringEncoding]];

 

 

 

[postData  appendData: [[NSString  stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"\r\n\r\n",@"timestamp" ] dataUsingEncoding:NSUTF8StringEncoding]];

 

[postData  appendData:[[NSString   stringWithFormat:@"%@",timestamp] dataUsingEncoding:NSUTF8StringEncoding]];

 

[postData  appendData:[[NSString   stringWithFormat:@"\r\n--%@\r\n",BOUNDRY] dataUsingEncoding:NSUTF8StringEncoding]];

 

 

[postData  appendData: [[NSString  stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"\r\n\r\n",@"signature" ] dataUsingEncoding:NSUTF8StringEncoding]];

 

[postData  appendData:[[NSString   stringWithFormat:@"%@",signature] dataUsingEncoding:NSUTF8StringEncoding]];

 

 

 

if (imageData != nil ) {

 

[postData  appendData:[[NSString   stringWithFormat:@"\r\n--%@\r\n",BOUNDRY] dataUsingEncoding:NSUTF8StringEncoding]];

 

[postData  appendData: [[NSString  stringWithFormat:@"Content-Disposition: form-data; name=\"%@\";filename=\"temp.png\"\r\nContent-Type: image/png\r\n\r\n",@"upfile" ] dataUsingEncoding:NSUTF8StringEncoding]];

 

[postData  appendData:imageData];

 

}   

 

 

[postData  appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n",BOUNDRY] dataUsingEncoding:NSUTF8StringEncoding]];

 

 

    [urlRequest setHTTPBody:postData];

    NSLog(@"%@",urlRequest); 

 

 

 

NSData *returnData = [NSURLConnection sendSynchronousRequest:urlRequest returningResponse:nil error:nil];  

 

 

 

NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];  

NSLog(@"%@",returnString);