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
网络客户端.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
其中一些是特定于我所做的。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。