Form-based File Upload in HTML（RFC-1867）

1.

RootViewController.m

#import "RootViewController.h"

#define URL @"http://localhost:8080/TestOne/upload3.jsp"

@implementation RootViewController
- (void)viewDidLoad

{

    [super viewDidLoad];
UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];

    button.frame = CGRectMake(100, 100, 100, 50);

    [button setTitle:@"发送图片" forState:0];

    button.backgroundColor = [UIColor groupTableViewBackgroundColor];

    [self.view addSubview:button];

    [button addTarget:self action:@selector(postImageAction:) forControlEvents:7];

}
-(void)postImageAction:(UIButton *)sender

{

    //分界线的标示符，用于区分每一条

    NSString *TWITTERFO_FORM_BOUNDARY = @"AaB03x";
//根据url初始化request

    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:

                                     [NSURL URLWithString:URL]

                                                            cachePolicy:NSURLRequestReloadIgnoringCacheData

                                                       timeoutInterval:10];

    //分界线 --AaB03x

    NSString *MPboundary =     [[NSString alloc] initWithFormat:@"--%@",TWITTERFO_FORM_BOUNDARY];

    //结束符AaB03x--

    NSString *endMPboundary = [[NSString alloc]initWithFormat:@"%@--",MPboundary];

    //字典存多少张图片

    NSDictionary *params = [NSDictionary dictionaryWithObjectsAndKeys:[UIImage imageNamed:@"163.png"],@"File1",@"huen",@"user",nil];

    //要上传图片

    UIImage *image = [params objectForKey:@"File1"];

    NSData *data = UIImagePNGRepresentation(image);

    //http body 的字符串

    NSMutableString *body = [[NSMutableString alloc]init];

    //参数的所有key的

    NSArray *keys = [params allKeys];

    for (int i = 0; i < [params count]; i++)

    {

        //得到当前key

        NSString *key = [keys objectAtIndex:i];

        //如果key不是图片类型

        if (![key isEqualToString:@"File1"])

        {

            //添加分界线，换行

            [body appendFormat:@"%@\r\n",MPboundary];

            //添加字段名称，换2行

            [body appendFormat:@"Content-Disposition:form-data;name=\"%@\"\r\n\r\n",key];

            //添加字段的值

            [body appendFormat:@"%@\r\n",[params objectForKey:key]];

        }

    }

    ///////////////////////////////传图////////////////////////////////////////////////

    //添加分界线换行

    [body appendFormat:@"%@\r\n",MPboundary];

    //给据heml控件neme的值声明File1字段，文件名为163.png

    [body appendFormat:@"Content-Disposition:form-data;name=\"File1\";filename=\"163.png\"\r\n"];

    //声明上传文件的格式

    [body appendFormat:@"Content-Type:image/png\r\n\r\n"];

    //声明结束符

    NSString *end = [[NSString alloc]initWithFormat:@"\r\n%@",endMPboundary];

    ///////////////////////////////////////////////////////////////////////////////////

    //声明myRequestData,用来放入http body

    NSMutableData *myRequestData = [NSMutableData data];

    //将body字符串转化为UTF-8

    [myRequestData appendData:[body dataUsingEncoding:NSUTF8StringEncoding]];

    //将image加入data

    [myRequestData appendData:data];

    //加入结束符--AaB03x--

    [myRequestData appendData:[end dataUsingEncoding:NSUTF8StringEncoding]];

    ///////////////////////////////设置Content////////////////////////////////////////

    //设置httpHeader中Content-Type的值

    NSString *content = [[NSString alloc]initWithFormat:@"multipart/form-data;boundary=%@",TWITTERFO_FORM_BOUNDARY];

    //设置HttpHeader

    [request setValue:content forHTTPHeaderField:@"Content-Type"];

    //设置Content-Length

    [request setValue:[NSString stringWithFormat:@"%d",[myRequestData length]] forHTTPHeaderField:@"Content-Length"];

    //设置Http body

    [request setHTTPBody:myRequestData];

    //http Method

    [request setHTTPMethod:@"POST"];
NSError * err;

    NSHTTPURLResponse * response;

    NSData *urlData = [NSURLConnection sendSynchronousRequest:request

                                            returningResponse:&response

                                                        error:&err];
NSString * responseStr = [[NSString alloc] initWithData:urlData

                                                   encoding:NSUTF8StringEncoding];

    NSLog(@"responseStr = %@",responseStr);

    // 打印回应和错误信息

    NSLog(@"response = %@",[NSHTTPURLResponse localizedStringForStatusCode:[response statusCode]]);

}
@end

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Form-based File Upload in HTML（RFC-1867）,码迷,mamicode.com