如何在 iOS 中使用图像上传代码发布更多参数？
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【中文标题】如何在 iOS 中使用图像上传代码发布更多参数？【英文标题】：How to post more parameters with image upload code in iOS? 【发布时间】：2012-05-23 23:41:33 【问题描述】：您好，我正在 php 服务器上上传图片，并在此代码的帮助下成功上传
- (NSString*)uploadData:(NSData *)data toURL:(NSString *)urlStr:(NSString *)_userID
// File upload code adapted from http://www.cocoadev.com/index.pl?HTTPFileUpload
// and http://www.cocoadev.com/index.pl?HTTPFileUploadSample
NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
[request setURL:[NSURL URLWithString:urlStr]];
[request setHTTPMethod:@"POST"];
// NSString* = [NSString stringWithString:@"0xKhtmlbOuNdArY"];
NSString *stringBoundary = [NSString stringWithString:@"---------------------------14737809831466499882746641449"];
NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",stringBoundary];
[request addValue:contentType forHTTPHeaderField: @"Content-Type"];
NSMutableData *body = [NSMutableData data];
[body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
// [body appendData:[[NSString stringWithFormat:@"userId=%@",_userID] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"userfile\"; filename=\"image%@.jpg\"\r\n", _userID] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithString:@"Content-Type: application/octet-stream\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[NSData dataWithData:data]];
[body appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n",stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
// setting the body of the post to the reqeust
[request setHTTPBody:body];
// now lets make the connection to the web
NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];
NSLog(@"%@",returnString);
return returnString;
现在我想在 derver 端发送我的用户 ID，我该如何发送我的用户 ID？我尝试过这种方式
[body appendData:[[NSString stringWithFormat:@"userId=%@",_userID] dataUsingEncoding:NSUTF8StringEncoding]];
但是我尝试以这种方式发送它是徒劳的
[body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"userfile\"; filename=\"image%@.jpg\"; userId=\"%@\"\r\n", _userID, _userID] dataUsingEncoding:NSUTF8StringEncoding]];
但又是徒劳，请指导我该怎么做！
【问题讨论】：
你能分享一下php和ios的工作代码吗，我也面临同样的问题 【参考方案1】：如果您还没有考虑过使用AFNetworking，那么您应该这样做。它使处理 Web 服务变得更加容易。我做了一些类似于我认为你想做的事情。我编写了一个自定义类来触发网络请求。给你： NetworkClient.h
/*
NetworkClient.h
Created by LJ Wilson on 2/3/12.
Copyright (c) 2012 LJ Wilson. All rights reserved.
License:
Permission is hereby granted, free of charge, to any person obtaining a copy of this software
and associated documentation files (the "Software"), to deal in the Software without restriction,
including without limitation the rights to use, copy, modify, merge, publish, distribute,
sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or
substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT
OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#import <Foundation/Foundation.h>
extern NSString * const APIKey;
@interface NetworkClient : NSObject
+(void)processURLRequestWithURL:(NSString *)url
andParams:(NSDictionary *)params
block:(void (^)(id obj))block;
+(void)processURLRequestWithURL:(NSString *)url
andParams:(NSDictionary *)params
syncRequest:(BOOL)syncRequest
block:(void (^)(id obj))block;
+(void)processURLRequestWithURL:(NSString *)url
andParams:(NSDictionary *)params
syncRequest:(BOOL)syncRequest
alertUserOnFailure:(BOOL)alertUserOnFailure
block:(void (^)(id obj))block;
+(void)processFileUploadRequestWithURL:(NSString *)url
andParams:(NSDictionary *)params
fileData:(NSData *)fileData
fileName:(NSString *)fileName
mimeType:(NSString *)mimeType
block:(void (^)(id obj))block;
+(void)handleNetworkErrorWithError:(NSError *)error;
+(void)handleNoAccessWithReason:(NSString *)reason;
@end
NetworkClient.m
/*
NetworkClient.m
Created by LJ Wilson on 2/3/12.
Copyright (c) 2012 LJ Wilson. All rights reserved.
License:
Permission is hereby granted, free of charge, to any person obtaining a copy of this software
and associated documentation files (the "Software"), to deal in the Software without restriction,
including without limitation the rights to use, copy, modify, merge, publish, distribute,
sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or
substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT
OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#import "NetworkClient.h"
#import "AFHTTPClient.h"
#import "AFHTTPRequestOperation.h"
#import "SBJson.h"
NSString * const APIKey = @"APIKEY GOES HERE IF YOU WANT TO USE ONE";
@implementation NetworkClient
+(void)processURLRequestWithURL:(NSString *)url
andParams:(NSDictionary *)params
block:(void (^)(id obj))block
[self processURLRequestWithURL:url andParams:params syncRequest:NO alertUserOnFailure:NO block:^(id obj)
block(obj);
];
+(void)processURLRequestWithURL:(NSString *)url
andParams:(NSDictionary *)params
syncRequest:(BOOL)syncRequest
block:(void (^)(id obj))block
[self processURLRequestWithURL:url andParams:params syncRequest:syncRequest alertUserOnFailure:NO block:^(id obj)
block(obj);
];
+(void)processURLRequestWithURL:(NSString *)url
andParams:(NSDictionary *)params
syncRequest:(BOOL)syncRequest
alertUserOnFailure:(BOOL)alertUserOnFailure
block:(void (^)(id obj))block
// Default url goes here, pass in a nil to use it
if (url == nil)
url = @"http://www.mydomain.com/mywebservice";
NSMutableDictionary *dict = [[NSMutableDictionary alloc] initWithDictionary:params];
[dict setValue:APIKey forKey:@"APIKey"];
NSDictionary *newParams = [[NSDictionary alloc] initWithDictionary:dict];
NSURL *requestURL;
AFHTTPClient *httpClient = [[AFHTTPClient alloc] initWithBaseURL:requestURL];
NSMutableURLRequest *theRequest = [httpClient requestWithMethod:@"POST" path:url parameters:newParams];
__block NSString *responseString = [NSString stringWithString:@""];
AFHTTPRequestOperation *_operation = [[AFHTTPRequestOperation alloc] initWithRequest:theRequest];
__weak AFHTTPRequestOperation *operation = _operation;
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject)
responseString = [operation responseString];
id retObj = [responseString JSONValue];
// Check for invalid response (No Access)
if ([retObj isKindOfClass:[NSDictionary class]])
if ([[(NSDictionary *)retObj valueForKey:@"Message"] isEqualToString:@"No Access"])
block(nil);
[self handleNoAccessWithReason:[(NSDictionary *)retObj valueForKey:@"Reason"]];
else if ([retObj isKindOfClass:[NSArray class]])
if ([(NSArray *)retObj count] > 0)
NSDictionary *dict = [(NSArray *)retObj objectAtIndex:0];
if ([[dict valueForKey:@"Message"] isEqualToString:@"No Access"])
block(nil);
[self handleNoAccessWithReason:[(NSDictionary *)retObj valueForKey:@"Reason"]];
block(retObj);
failure:^(AFHTTPRequestOperation *operation, NSError *error)
NSLog(@"Failed with error = %@", [NSString stringWithFormat:@"[Error]:%@",error]);
block(nil);
if (alertUserOnFailure)
// Let the user know something went wrong
[self handleNetworkErrorWithError:operation.error];
];
[operation start];
if (syncRequest)
// Process the request syncronously
[operation waitUntilFinished];
#pragma mark - processFileUpload
+(void)processFileUploadRequestWithURL:(NSString *)url
andParams:(NSDictionary *)params
fileData:(NSData *)fileData
fileName:(NSString *)fileName
mimeType:(NSString *)mimeType
block:(void (^)(id obj))block
// Default url goes here, pass in a nil to use it
if (url == nil)
url = @"http://www.mydomain.com/mywebservice";
NSMutableDictionary *dict = [[NSMutableDictionary alloc] initWithDictionary:params];
[dict setValue:APIKey forKey:@"APIKey"];
NSDictionary *newParams = [[NSDictionary alloc] initWithDictionary:dict];
AFHTTPClient *client= [AFHTTPClient clientWithBaseURL:[NSURL URLWithString:url]];
NSMutableURLRequest *myRequest = [client multipartFormRequestWithMethod:@"POST"
path:@""
parameters:newParams
constructingBodyWithBlock: ^(id <AFMultipartFormData>formData)
[formData appendPartWithFileData:fileData name:fileName fileName:fileName mimeType:mimeType];
];
AFHTTPRequestOperation *_operation = [[AFHTTPRequestOperation alloc] initWithRequest:myRequest];
__weak AFHTTPRequestOperation *operation = _operation;
__block NSString *responseString = [NSString stringWithString:@""];
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject)
responseString = [operation responseString];
id retObj = [responseString JSONValue];
// Check for invalid response (No Access)
if ([retObj isKindOfClass:[NSDictionary class]])
if ([[(NSDictionary *)retObj valueForKey:@"Message"] isEqualToString:@"No Access"])
block(nil);
[self handleNoAccessWithReason:[(NSDictionary *)retObj valueForKey:@"Reason"]];
else if ([retObj isKindOfClass:[NSArray class]])
if ([(NSArray *)retObj count] > 0)
NSDictionary *dict = [(NSArray *)retObj objectAtIndex:0];
if ([[dict valueForKey:@"Message"] isEqualToString:@"No Access"])
block(nil);
[self handleNoAccessWithReason:[(NSDictionary *)retObj valueForKey:@"Reason"]];
block(retObj);
failure:^(AFHTTPRequestOperation *operation, NSError *error)
NSLog(@"Failed with error = %@", [NSString stringWithFormat:@"[Error]:%@",error]);
block(nil);
// if (alertUserOnFailure)
// // Let the user know something went wrong
// [self handleNetworkErrorWithError:operation.error];
//
];
[operation start];
#pragma mark - Error and Access Handling
+(void)handleNetworkErrorWithError:(NSError *)error
NSString *errorString = [NSString stringWithFormat:@"[Error]:%@",error];
// Standard UIAlert Syntax
UIAlertView *myAlert = [[UIAlertView alloc]
initWithTitle:@"Connection Error"
message:errorString
delegate:nil
cancelButtonTitle:@"OK"
otherButtonTitles:nil, nil];
[myAlert show];
+(void)handleNoAccessWithReason:(NSString *)reason
// Standard UIAlert Syntax
UIAlertView *myAlert = [[UIAlertView alloc]
initWithTitle:@"No Access"
message:reason
delegate:nil
cancelButtonTitle:@"OK"
otherButtonTitles:nil, nil];
[myAlert show];
@end
其中一些特定于我的工作。我所有的 Web 服务都使用 APIKey 来增强安全性，并且它们都在处理任何请求之前进行安全检查。网络客户端将返回 NSDictionary 或 NSArray，具体取决于 Web 服务返回的内容（以 JSON 格式）。
要使用图像上传，您可以像这样在 VC 中调用它（根据需要使用尽可能多的参数。：
NSData *imageData = UIImagePNGRepresentation(myImage);
NSString *fileName = @"MyFileName.png";
NSDictionary *params = [NSDictionary dictionaryWithObjectsAndKeys:
@"Param1", @"Param1Name",
@"Param2", @"Param2Name",
@"Param3", @"Param3Name",
nil];
// Uses default URL
[NetworkClient processFileUploadRequestWithURL:nil
andParams:params
fileData:imageData
fileName:fileName
mimeType:@"image/png"
block:^(id obj)
if ([obj isKindOfClass:[NSArray class]])
// Successful upload, do other processing as needed
];
随意去掉你不需要的东西。只需保留版权声明即可。
【讨论】：
【参考方案2】：你可以试试这个：
[body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"\r\n\r\n",@"userId"] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"%@",_userID] dataUsingEncoding:NSUTF8StringEncoding]];
【讨论】：
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