【iOS開發-網絡】AFN的使用

AFN的下載地址

https://github.com/AFNetworking/AFNetworking

下面也有具體的使用方法

下載好解壓，把AFNetworking文件夾拖入項目

引入頭文件

#import "AFNetworking.h"

get請求

//創建一個管理者
AFHTTPRequestOperationManager *mgr = [AFHTTPRequestOperationManager manager];

//設置服務器端返回的數據格式，默認爲JSON解析AFJSONResponseSerializer AFXMLResponseSerializer AFResponseSerializer

mgr.responseSerializer = [AFJSONResponseSerializer serializer];

設置get請求後面的參數    
NSMutableDictionary *params = [NSMutableDictionary dictionary];
params[@"username"] = @"123";
params[@"pwd"] = @"123";

//設置url   
NSString *string = @"http://localhost:8080/TFServer/login";

[mgr GET:string parameters:params success:^(AFHTTPRequestOperation *operation, id responseObject) {

    //獲取成功以後執行這個代碼塊
        NSLog(@"---%@", responseObject);
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
//失敗執行的代碼
        NSLog(@"error");
    }];

post請求

//創建一個管理者
AFHTTPRequestOperationManager *mgr = [AFHTTPRequestOperationManager manager];

//設置服務器端返回的數據格式，默認爲JSON解析AFJSONResponseSerializer AFXMLResponseSerializer AFResponseSerializer

mgr.responseSerializer = [AFJSONResponseSerializer serializer];

設置get請求後面的參數    
NSMutableDictionary *params = [NSMutableDictionary dictionary];
params[@"username"] = @"123";
params[@"pwd"] = @"123";

//設置url   
NSString *string = @"http://localhost:8080/TFServer/login";

//只是這裏把get變爲POST    
[mgr POST:string parameters:params success:^(AFHTTPRequestOperation *operation, id responseObject) {

    //獲取成功以後執行這個代碼塊
        NSLog(@"---%@", responseObject);
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
//失敗執行的代碼
        NSLog(@"error");
    }];

上傳文件

新式的方法，使用與iOS7

//得到文件的路徑
 NSString *path = [[NSBundle mainBundle] pathForResource:@"1.jpg" ofType:nil];

//創建一個request對像
    NSMutableURLRequest *request = [[AFHTTPRequestSerializer serializer] multipartFormRequestWithMethod:@"POST" URLString:@"http://localhost:8080/TFServer/upload" parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
        [formData appendPartWithFileURL:[NSURL fileURLWithPath:path] name:@"file" fileName:@"test.jpg" mimeType:@"image/jpeg" error:nil];
    } error:nil];

    //創建一個manager對象
    AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration]];
    NSProgress *progress = nil;

   //創建任務
    NSURLSessionUploadTask *uploadTask = [manager uploadTaskWithStreamedRequest:request progress:&progress completionHandler:^(NSURLResponse *response, id responseObject, NSError *error) {
        if (error) {
            NSLog(@"Error: %@", error);
        } else {
            NSLog(@"%@ %@", response, responseObject);
        }
    }];

    [uploadTask resume];

上傳方法1

將上傳的文件轉換爲data數據然後上傳

    // 1.創建一個管理者
    AFHTTPRequestOperationManager *mgr = [AFHTTPRequestOperationManager manager];

    // 2.封裝參數(這個字典只能放非文件參數)
    NSMutableDictionary *params = [NSMutableDictionary dictionary];
    params[@"username"] = @"123";
    params[@"age"] = @20;
    params[@"pwd"] = @"456";
    params[@"height"] = @1.55;



    // 2.發送一個請求
    NSString *url = @"http://localhost:8080/TFServer/upload";
    [mgr POST:url parameters:params constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
        UIImage *image = [UIImage imageNamed:@"1.jpg"];
        NSData *fileData = UIImageJPEGRepresentation(image, 1.0);
        [formData appendPartWithFileData:fileData name:@"file" fileName:@"haha.jpg" mimeType:@"image/jpeg"];

        // 不是用這個方法來設置文件參數
        //        [formData appendPartWithFormData:fileData name:@"file"];
    } success:^(AFHTTPRequestOperation *operation, id responseObject) {
        NSLog(@"上傳成功");
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        NSLog(@"上傳失敗");
    }];

上傳方法2

直接用URL獲取要上傳的文件

    // 1.創建一個管理者
    AFHTTPRequestOperationManager *mgr = [AFHTTPRequestOperationManager manager];

    // 2.封裝參數(這個字典只能放非文件參數)
    NSMutableDictionary *params = [NSMutableDictionary dictionary];
    params[@"username"] = @"123";
    params[@"age"] = @20;
    params[@"pwd"] = @"456";
    params[@"height"] = @1.55;

    // 2.發送一個請求
    NSString *url = @"http://localhost:8080/TFServer/upload";
    [mgr POST:url parameters:params constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
        // 在發送請求之前會自動調用這個block
        // 需要在這個block中添加文件參數到formData中

        /**
         FileURL : 需要上傳的文件的URL路徑
         name : 服務器那邊接收文件用的參數名
         fileName : （告訴服務器）所上傳文件的文件名
         mimeType : 所上傳文件的文件類型
         */
        NSURL *url = [[NSBundle mainBundle] URLForResource:@"1" withExtension:@"jpg"];
        NSLog(@"-----%@", url);
        [formData appendPartWithFileURL:url name:@"file" fileName:@"test.jpg" mimeType:@"image/jpeg" error:nil];

        /**
         FileData : 需要上傳的文件的具體數據
         name : 服務器那邊接收文件用的參數名
         fileName : （告訴服務器）所上傳文件的文件名
         mimeType : 所上傳文件的文件類型
         */
        //        UIImage *image = [UIImage imageNamed:@"minion_01"];
        //        NSData *fileData = UIImagePNGRepresentation(image);
        //        [formData appendPartWithFileData:fileData name:@"file" fileName:@"haha.png" mimeType:@"image/png"];
    } success:^(AFHTTPRequestOperation *operation, id responseObject) {
        NSLog(@"上傳成功");
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        NSLog(@"上傳失敗");
    }];