2014-10-25 10:35 13072人阅读 收藏 举报
一、AFNetworking替换ASHttpRequest原因经过近两年开发IOS使用AFNetworking和ASIHttpRequest的经验,结合在实际开发App的遇到网络问题和线上app用户反馈及在用测试工具开发测试中的反应情况,最后得出结论AFNetworking的优点相对ASIHttpReqeuest的优点大一些,尤其在网络稳定性方面。处理crash这些情况,下面通过两者详细的优缺点比较了解 一下,为什么把ASIHttpRequest给替换成了ASNetworking。
二、AFNetworking的优缺点
优点:
维护和使用者相对多
对ARC的支持
对Block使用的支持非常好
维护和使用者相对多(目前已到2.4.1版)
专门对异步请求的支持
支持基于url缓存的支持
图片及NSURLCache、AFCache缓存实用
支持后台下载,缓存离线请求的支持(SDURLCache)
对JSON支持好
对实现的http请求比较容易
对https的支持
缺点:
是基于Foundation框架的NSURLConnection对网络进行的封装不是用的低层的
CFNetwork进行的封装扩展的功能目前相对少一些,但在Http上的网络支持已足够
ASIHttpRequest:
优点:
对网络底层CFNetwork支持,在性能上占优
对代理proxy支持设置比较方便
支持离线下载和基于url的缓存
对https的支持
对实现的http请求方面实现的不是太好,会多写点代码
支持异步和同步的支持
缺点:
在2012年社区已停止更新
对目前最新版本IOS7和8上使用时会有些问题,特别是网络异步请求多时,多线程使用时经常出现时容易出现网络不稳定的问题。
对ARC支持不好,不支持苹果推荐给我们使用的ARC性能
对Block不够好,框架代码在多线程方面用的不好
ASI框架在面向对象方面不够抽象
接口和实现代码看着过于庞大,里面过程化的实现比较严重不利于扩展和维护
三、在代码实现仅用GET请求来做一下AFNetworking和ASIHttpRequest的比较:
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- - (void)httpInit
- {
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- self.manager = [AFHTTPRequestOperationManager manager];
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- self.manager.responseSerializer = [AFJSONResponseSerializer serializer];
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- self.manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:@"text/html"];
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- self.manager.requestSerializer.timeoutInterval = 30;
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-
-
-
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- [self addRequestHeader];
- }
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-
-
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- - (void)startGet:(NSString*)uri tag:(NSInteger)tag
- {
- [self httpInit];
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- [self.manager GET:[NSString stringWithFormat:@"%@%@",self.baseUrl,uri] parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
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- [self requestFinished:responseObject tag:tag];
- } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
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- [self requestFailed:tag];
- }];
- }
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-
-
-
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- -(void)httpInit:(NSString *)method uri:(NSString *)uri
- {
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- [self setRes:[ASIFormDataRequest requestWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"%@%@",self.baseUrl,uri]]]];
-
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- if (self.host != nil) {
- [self.res setProxyHost:self.host];
- }
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- if (self.port > 0) {
- [self.res setProxyPort:self.port];
- }
-
- [self.res setDelegate:self];
-
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- [self.res setUseCookiePersistence:YES];
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- [self.res setTimeOutSeconds:30];
-
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- [self.res setRequestMethod:method];
- }
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-
-
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- - (void)startGet:(NSString*)uri tag:(NSInteger)tag{
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- [self cancel];
- [self httpInit:@"GET" uri:uri];
- [self.res setTag:tag];
- [self.res startAsynchronous];
- }
四、AFNetworking在Model层对app的网络请求的封装实现过的代码:
initData.h
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- #define DEFAULT_PAGESIZE 20 //默认分页数量
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- typedef void (^Complete)();
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- typedef void (^Failed)(NSString *state,NSString *errmsg);
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- @interface InitData : NSObject{
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- @protected
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- Complete _complete;
- Failed _failed;
- }
-
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- @property(nonatomic,strong)NSString *baseUrl;
- @property(nonatomic,strong)NSString *host;
- @property(nonatomic,assign)NSInteger port;
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- @property(nonatomic,strong)NSString *errCode;
- @property(nonatomic,strong)NSString *errMsg;
- @property(nonatomic,strong)NSString *version;
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- - (id)initWithDelegate:(id)delegate;
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-
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- - (void)startGet:(NSString*)url tag:(NSInteger)tag;
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- - (void)startCache:(NSString *)aCacheName cacheTime:(NSInteger)aTime uri:(NSString *)uri tag:(NSInteger)tag;
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- - (void)startPost:(NSString*)url params:(NSDictionary*)params tag:(NSInteger)tag;
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- - (void)uploadFileURI:(NSString*)aUri filePath:(NSString*)aPath keyName:(NSString *)aKeyName;
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-
-
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- - (void)cancel;
- @end
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- #pragma mark delegate
- @protocol InitDataDelegate <NSObject>
- @optional
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-
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- -(void)getFinished:(NSDictionary *)msg tag:(NSInteger)tag;
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-
-
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- -(void)getError:(NSDictionary *)msg tag:(NSInteger)tag;
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- @end
initData.m-
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- #import "InitData.h"
- #import "AFNetworking.h"
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- Class object_getClass(id object);
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- @interface InitData()
- {
- Class afOrinClass;
- }
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- @property(nonatomic,strong)AFHTTPRequestOperationManager *manager;
- @property(nonatomic,weak)id<InitDataDelegate> delegate;
- @end
-
- @implementation InitData
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- #pragma mark initData
- - (id)initWithDelegate:(id)delegate
- {
- if ((self = [super init])) {
- afOrinClass = object_getClass(delegate);
- [self setDelegate:delegate];
- [self setDefault];
- }
-
- return self;
- }
-
-
-
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- - (void)setDefault
- {
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- NSDictionary *cfgDic = [NSObject JzbGetConfig];
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- [self setBaseUrl:[cfgDic objectForKey:@"apiUrl"]];
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- if (![[cfgDic objectForKey:@"apiHost"] isEqualToString:@""]) {
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- [self setHost:[cfgDic objectForKey:@"apiHost"]];
-
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- [self setBaseUrl:[NSString stringWithFormat:@"http://%@", self.host]];
- }else{
- [self setHost:nil];
- }
-
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- [self setPort:[[cfgDic objectForKey:@"apiPort"] intValue]];
- }
-
- #pragma mark httpMode
-
-
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- - (void)httpInit
- {
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- self.manager = [AFHTTPRequestOperationManager manager];
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- self.manager.responseSerializer = [AFJSONResponseSerializer serializer];
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- self.manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:@"text/html"];
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- self.manager.requestSerializer.timeoutInterval = 30;
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-
-
-
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- [self addRequestHeader];
- }
-
-
-
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- - (void)addRequestHeader
- {
-
-
-
-
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- [self.manager.requestSerializer setValue:@"xxx" forHTTPHeaderField:@"TOKEN"];
- }
-
-
-
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- - (void)startGet:(NSString*)uri tag:(NSInteger)tag
- {
- [self httpInit];
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- [self.manager GET:[NSString stringWithFormat:@"%@%@",self.baseUrl,uri] parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
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- [self requestFinished:responseObject tag:tag];
- } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
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- [self requestFailed:tag];
- }];
- }
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- - (AFHTTPRequestOperation *)cacheOperationWithRequest:(NSURLRequest *)urlRequest
- tag:(NSInteger)tag
- success:(void (^)(AFHTTPRequestOperation *operation, id responseObject))success
- failure:(void (^)(AFHTTPRequestOperation *operation, NSError *error))failure
- {
- AFHTTPRequestOperation *operation = [self.manager HTTPRequestOperationWithRequest:urlRequest success:^(AFHTTPRequestOperation *operation, id responseObject){
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- NSCachedURLResponse *cachedURLResponse = [[NSURLCache sharedURLCache] cachedResponseForRequest:urlRequest];
- cachedURLResponse = [[NSCachedURLResponse alloc] initWithResponse:operation.response data:operation.responseData userInfo:nil storagePolicy:NSURLCacheStorageAllowed];
- [[NSURLCache sharedURLCache] storeCachedResponse:cachedURLResponse forRequest:urlRequest];
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- success(operation,responseObject);
- }failure:^(AFHTTPRequestOperation *operation, NSError *error) {
-
- if (error.code == kCFURLErrorNotConnectedToInternet) {
- NSCachedURLResponse *cachedResponse = [[NSURLCache sharedURLCache] cachedResponseForRequest:urlRequest];
- if (cachedResponse != nil && [[cachedResponse data] length] > 0) {
- success(operation, cachedResponse.data);
- } else {
- failure(operation, error);
- }
- } else {
- failure(operation, error);
- }
- }];
-
- return operation;
- }
-
-
-
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- - (void)startCache:(NSString *)aCacheName cacheTime:(NSInteger)aTime uri:(NSString *)uri tag:(NSInteger)tag
- {
- [self httpInit];
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- AFHTTPRequestSerializer *serializer = [AFHTTPRequestSerializer serializer];
- NSMutableURLRequest *request = [serializer requestWithMethod:@"GET" URLString:[NSString stringWithFormat:@"%@%@",self.baseUrl,uri] parameters:nil error:nil];
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- [request setTimeoutInterval:20];
- [request setCachePolicy:NSURLRequestUseProtocolCachePolicy];
-
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- void (^requestSuccessBlock)(AFHTTPRequestOperation *operation, id responseObject) = ^(AFHTTPRequestOperation *operation, id responseObject) {
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- [self requestFinished:responseObject tag:tag];
- };
-
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- void (^requestFailureBlock)(AFHTTPRequestOperation *operation, NSError *error) = ^(AFHTTPRequestOperation *operation, NSError *error){
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- [self requestFailed:tag];
- };
-
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- AFHTTPRequestOperation *operation = [self cacheOperationWithRequest:request tag:tag success:requestSuccessBlock failure:requestFailureBlock];
- [self.manager.operationQueue addOperation:operation];
- }
-
-
-
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- - (id)cachedResponseObject:(AFHTTPRequestOperation *)operation{
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- NSCachedURLResponse* cachedResponse = [[NSURLCache sharedURLCache] cachedResponseForRequest:operation.request];
- AFHTTPResponseSerializer* serializer = [AFJSONResponseSerializer serializer];
- id responseObject = [serializer responseObjectForResponse:cachedResponse.response data:cachedResponse.data error:nil];
- return responseObject;
- }
-
-
-
-
- - (void)startPost:(NSString*)uri params:(NSDictionary*)params tag:(NSInteger)tag
- {
- [self httpInit];
-
- [self.manager POST:[NSString stringWithFormat:@"%@%@",self.baseUrl,uri] parameters:params success:^(AFHTTPRequestOperation *operation, id responseObject) {
-
- [self requestFinished:responseObject tag:tag];
- } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
-
- [self requestFailed:tag];
- }];
- }
-
-
-
-
- - (void)uploadFileURI:(NSString *)aUri filePath:(NSString *)aPath keyName:(NSString *)aKeyName
- {
- [self httpInit];
-
- [self.manager POST:[NSString stringWithFormat:@"%@%@",self.baseUrl,aUri] parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
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- NSData *imageData = [[NSData alloc] initWithContentsOfFile:aPath];
-
-
- NSMutableString *filePath = [NSMutableString stringWithString:aPath];
- CFStringRef UTI = UTTypeCreatePreferredIdentifierForTag(kUTTagClassFilenameExtension, (__bridge CFStringRef)[filePath pathExtension], NULL);
- CFStringRef MIMEType = UTTypeCopyPreferredTagWithClass (UTI, kUTTagClassMIMEType);
-
- NSString *fileName = [filePath lastPathComponent];
-
-
- [formData appendPartWithFileData:imageData name:aKeyName fileName:fileName mimeType:(__bridge NSString *)(MIMEType)];
-
- }success:^(AFHTTPRequestOperation *operation, id responseObject){
-
- [self requestFinished:responseObject tag:200];
-
- }failure:^(AFHTTPRequestOperation *operation, NSError *error) {
-
- }];
-
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-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
- }
-
-
-
-
- - (void)cancel
- {
- if (_manager != nil) {
- _manager = nil;
- }
- }
-
-
-
-
- - (void)cleanupBlocks
- {
- _complete = nil;
- _failed = nil;
- }
-
-
-
-
-
-
-
-
-
- - (BOOL)parseHead:(NSDictionary*)msg
- {
-
-
-
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- return YES;
- }
-
- #pragma mark AFHTTPDelegate
-
-
-
- - (void)requestFinished:(NSDictionary *)aDictionary tag:(NSInteger)aTag
- {
-
- if([self parseHead:aDictionary] == YES){
-
- if ([self.errCode intValue] <= 0) {
-
- if ([self.delegate respondsToSelector:@selector(getFinished:tag:)]) {
- [self.delegate getFinished:aDictionary tag:aTag];
- }
- }else{
- if (_failed) {
- _failed(self.errCode,self.errMsg);
- }
- if ([self.delegate respondsToSelector:@selector(getError:tag:)]) {
- [self.delegate getError:aDictionary tag:aTag];
- }
- }
- }
- }
-
-
-
-
- - (void)requestFailed:(NSInteger)aTag
- {
- if (afOrinClass != object_getClass(_delegate)) {
- NSLog(@"model已销毁");
- return;
- }
-
- if (_failed) {
- _failed(@"1",@"request error");
- }
-
-
- if ([self.delegate respondsToSelector:@selector(getError:tag:)]) {
- NSDictionary *dic = [NSDictionary dictionaryWithObjectsAndKeys:@"1",@"errcode",@"request error",@"errmsg", nil nil];
- [self.delegate getError:dic tag:aTag];
- }
- }
-
- @end