AFNetworking使用（2.0+）

最新推荐文章于 2020-03-24 15:44:53 发布

原创最新推荐文章于 2020-03-24 15:44:53 发布 · 446 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#AFN

iOS 专栏收录该内容

13 篇文章

订阅专栏

本文介绍了如何使用AFNetworking库进行常见的网络请求操作，包括GET请求、POST表单编码请求、POST多部分请求及文件下载等。通过示例展示了如何设置参数、处理响应及错误。

1、GET Request

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
[manager GET:@"http://example.com/resources.json" parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
    NSLog(@"JSON: %@", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"Error: %@", error);
}];

2、POST URL-Form-Encoded Request

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
NSDictionary *parameters = @{@"foo": @"bar"};
[manager POST:@"http://example.com/resources.json" parameters:parameters success:^(AFHTTPRequestOperation *operation, id responseObject) {
    NSLog(@"JSON: %@", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"Error: %@", error);
}];

3、POST Multi-Part Request

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
NSDictionary *parameters = @{@"foo": @"bar"};
NSURL *filePath = [NSURL fileURLWithPath:@"file://path/to/image.png"];
[manager POST:@"http://example.com/resources.json" parameters:parameters constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
    [formData appendPartWithFileURL:filePath name:@"image" error:nil];
} success:^(AFHTTPRequestOperation *operation, id responseObject) {
    NSLog(@"Success: %@", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"Error: %@", error);
}];

4、Download File

AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc]initWithRequest:@"http://path/to/image.png"];
NSString *savedPath = @"******";
[operation setOutputStream:[NSOutputStream outputStreamToFileAtPath:savedPath append:NO]];
[operation setDownloadProgressBlock:^(NSUInteger bytesRead, long long totalBytesRead, long long totalBytesExpectedToRead) {
    NSLog(@"download：%f",(float)totalBytesRead / totalBytesExpectedToRead);
}];
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
    NSLog(@"下载成功");   
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"下载失败");
}];
[operation start];