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//封装一个工具类FileUploader
//FileUploader.h
#import <Foundation/Foundation.h>
@interface FileUploader : NSObject+(void) upLoadImage:(UIImage *) image completionHandler:(void (^)(NSURLResponse* response, NSData* data, NSError* connectionError)) handler;@end

//FileUploader.m
#import "FileUploader.h"
@implementation FileUploader+(void) upLoadImage:(UIImage *) image completionHandler:(void (^)(NSURLResponse* response, NSData* data, NSError* connectionError)) handle{ NSString *path1 = [NSString stringWithFormat:@"http://2.guansir.sinaapp.com/upload.php"]; NSURL *url = [NSURL URLWithString:path1]; NSData *data = UIImagePNGRepresentation(image); NSString *TWITTERFON_FORM_BOUNDARY = @"AaB03x"; //分界线 --AaB03x NSString *MPboundary=[[NSString alloc]initWithFormat:@"--%@",TWITTERFON_FORM_BOUNDARY]; //结束符 AaB03x-- NSString *endMPboundary=[[NSString alloc]initWithFormat:@"%@--",MPboundary]; //http body的字符串 NSMutableString *body=[[NSMutableString alloc]init]; ////添加分界线，换行 [body appendFormat:@"%@\r\n",MPboundary]; //声明pic字段，文件名为boris.png [body appendFormat:@"Content-Disposition: form-data; name=\"img\"; filename=\"boris.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：--AaB03x-- 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UTF8格式的二进制 [myRequestData appendData:[body dataUsingEncoding:NSUTF8StringEncoding]]; //将image的data加入 [myRequestData appendData:data]; //加入结束符--AaB03x-- [myRequestData appendData:[end dataUsingEncoding:NSUTF8StringEncoding]]; //设置HTTPHeader中Content-Type的值 NSString *content=[[NSString alloc]initWithFormat:@"multipart/form-data; boundary=%@",TWITTERFON_FORM_BOUNDARY]; NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url]; //设置HTTPHeader [request setValue:content forHTTPHeaderField:@"Content-Type"]; //设置Content-Length [request setValue:[NSString stringWithFormat:@"%lu",(unsigned long)[myRequestData length]] forHTTPHeaderField:@"Content-Length"]; //设置http body [request setHTTPBody:myRequestData]; //http method [request setHTTPMethod:@"POST"]; [NSURLConnection sendAsynchronousRequest:request queue:[[NSOperationQueue alloc]init] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) { handle(response,data,connectionError); }];
}@end//FileUploader类封装完成========================================================

//使用
[FileUploader upLoadImage:image completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) { if(connectionError==nil) { if (data != nil) { NSLog(@"%@",[[NSString alloc] initWithData:data encoding:4]); NSError *error; NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:&error]; if (dic == nil) { }else{ //如果有值的话将图片和所需要的参数更新到服务端，这里需要的是将图片和老师id传到服务端改教师头像 NSString *strImage = [NSString stringWithFormat:@"id=%d&imgHead=%@",self.teachId,dic[@"imageUrl"]]; NSLog(@"strImage = %@",strImage); NSData *data1 = [strImage dataUsingEncoding:4]; NSString *path = [NSString stringWithFormat:@"%@%@",HOST,TEACHER_UPDATE]; NSURL *url = [NSURL URLWithString:path]; NSMutableURLRequest *req = [NSMutableURLRequest requestWithURL:url]; [req setHTTPMethod:@"POST"]; [req setHTTPBody:data1]; [NSURLConnection sendAsynchronousRequest:req queue:[NSOperationQueue new] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) { if (!connectionError) { NSLog(@"更新成功 = %@",[[NSString alloc]initWithData:data encoding:4]); }else { NSLog(@"error = %@",connectionError); } }]; } } } else { NSLog(@"error = %@",connectionError); } }];