IOS開(kāi)發(fā)基礎(chǔ)之使用AFNetworking框架下載服務(wù)器資源圖片

info.plist加入這句

<key>NSAppTransportSecurity</key> <dict><key>NSAllowsArbitraryLoads</key><true/> </dict>

服務(wù)器這里我們選擇是Java 的 Tomcat 服務(wù)器.Net 服務(wù)器或者PHP服務(wù)器亦可，或者node.js
nginx 服務(wù)器都可以 docker 容器服務(wù)器都可以，看你自己需求,也做了解析html 網(wǎng)頁(yè) 數(shù)據(jù)到控制臺(tái)。

// // ViewController.m // AFN演示 // // Created by 魯軍 on 2021/2/15. //#import "ViewController.h" #import "AFHTTPRequestOperationManager.h" #import "AFHTTPSessionManager.h" @interface ViewController ()<NSXMLParserDelegate>@end@implementation ViewController -(void)getTestHtmlFromServer{AFHTTPSessionManager *manger = [AFHTTPSessionManager manager];manger.responseSerializer = [AFHTTPResponseSerializer serializer];NSString *getUrlStr = @"http://www.baidu.com";NSString *getUrlStr1 = @"http://localhost:8080/MJServer/";[manger GET:getUrlStr parameters:nil success:^(NSURLSessionDataTask *task, id responseObject) {NSString *html = [[NSString alloc] initWithData:responseObject encoding:NSUTF8StringEncoding];NSLog(@"%@",html);} failure:^(NSURLSessionDataTask *task, NSError *error) {NSLog(@"%@",error);}]; } -(void)testGetSession{NSString *strUrl = @"http://localhost:8080/MJServer/video";[[AFHTTPSessionManager manager] GET:strUrl parameters:nil success:^(NSURLSessionDataTask *task, id responseObject) {NSLog(@"%@",responseObject);} failure:^(NSURLSessionDataTask *task, NSError *error) {NSLog(@"%@",error);}]; }-(void)downLoadFromServer{NSString *downPath = @"http://localhost:8080/MJServer/resources/images/minion_04.png";NSURL *url = [NSURL URLWithString:downPath];NSURLRequest *request = [NSURLRequest requestWithURL:url];//進(jìn)度NSProgress *progress = nil;[[[AFHTTPSessionManager manager] downloadTaskWithRequest:request progress:&progress destination:^NSURL *(NSURL *targetPath, NSURLResponse *response) {NSString *path =[[NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) lastObject] stringByAppendingPathComponent:response.suggestedFilename];NSURL *url = [[NSURL alloc] initFileURLWithPath:path];NSLog(@"targetPath=%@",targetPath);return url;} completionHandler:^(NSURLResponse *response, NSURL *filePath, NSError *error) {NSLog(@"%@",filePath);}] resume];// 觀察progress 的某個(gè)屬性 fractionCompleted (進(jìn)度) 是否發(fā)生變化//KVO 觀察者模式[progress addObserver:self forKeyPath:@"fractionCompleted" options:NSKeyValueObservingOptionNew context:nil]; } -(void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary<NSKeyValueChangeKey,id> *)change context:(void *)context{if([object isKindOfClass:[NSProgress class]]){NSLog(@"%@",change);NSProgress *progress = object;NSLog(@"%@",progress.localizedDescription);NSLog(@"%@",progress.localizedAdditionalDescription);NSLog(@"completedUnitCount = %zd",progress.completedUnitCount);NSLog(@"%f",progress.fractionCompleted);NSLog(@"totalUnitCount = %zd",progress.totalUnitCount);NSLog(@"%@",[NSThread currentThread]); // 子線程上} }- (void)viewDidLoad {[super viewDidLoad];// Do any additional setup after loading the view. }- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{// [self get1];//[self post11];// [self testGetSession];// [self downLoadFromServer];// [self getTestHtmlFromServer];[self getAndParseXML]; } @end 創(chuàng)作挑戰(zhàn)賽新人創(chuàng)作獎(jiǎng)勵(lì)來(lái)咯，堅(jiān)持創(chuàng)作打卡瓜分現(xiàn)金大獎(jiǎng)

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