iOS上传图片到网上，并更新到服务器，常用在设置头像
//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);
}
}];