ios之AFN上传下载详细步骤(2)

五.AFN
1.GETPOST
1> GET请求
// 1.获得请求管理者
AFHTTPRequestOperationManager *mgr = [AFHTTPRequestOperationManager manager];

// 2.封装请求参数
NSMutableDictionary *params = [NSMutableDictionary dictionary];
params[@"username"] = @"123";
params[@"pwd"] = @"123";

// 3.发送GET请求
[mgr GET:@"http://baidu.com/login" parameters:params
 success:^(AFHTTPRequestOperation *operation, id responseObject) {
     NSLog(@"请求成功---%@", responseObject);
 }
 failure:^(AFHTTPRequestOperation *operation, NSError *error) {
     NSLog(@"请求失败---%@", error);
 }];


2> POST请求
// 1.获得请求管理者
AFHTTPRequestOperationManager *mgr = [AFHTTPRequestOperationManager manager];

// 2.封装请求参数
NSMutableDictionary *params = [NSMutableDictionary dictionary];
params[@"username"] = @"123";
params[@"pwd"] = @"123";

// 3.发送POST请求
[mgr POST:@"http://baidu.com/login" parameters:params
 success:^(AFHTTPRequestOperation *operation, id responseObject) {
     NSLog(@"请求成功---%@", responseObject);
 }
 failure:^(AFHTTPRequestOperation *operation, NSError *error) {
     NSLog(@"请求失败---%@", error);
 }];

2.文件上传
// 1.获得请求管理者
AFHTTPRequestOperationManager *mgr = [AFHTTPRequestOperationManager manager];

// 2.发送请求(做文件上传)
#warning parameters : 只能放非文件参数
NSMutableDictionary *params = [NSMutableDictionary dictionary];
params[@"username"] = @"zhangsan";

[mgr POST:@"http://baidu.com/upload" parameters:params
constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
    // 一定要在这个block中添加文件参数
    
    // 加载文件数据
    NSString *file = [[NSBundle mainBundle] pathForResource:@"test.txt" ofType:nil];
    NSData *data = [NSData dataWithContentsOfFile:file];
    
    // 拼接文件参数
    [formData appendPartWithFileData:data name:@"file" fileName:@"123.txt" mimeType:@"text/plain"];
}
  success:^(AFHTTPRequestOperation *operation, id responseObject) {
      NSLog(@"上传成功----%@", responseObject);
  } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
      NSLog(@"上传失败----%@", error);
  }];