ios - 使用 afnetworking 在 url 中为 GET 方法传递参数

Question

我有执行查询的 url。

https://<BASE_URL>/<TENANT_URL>/?query=where UserName='abc'&companyId=&page=1&pageSize=25&filterResultByColumns=true

我正在像这样转义租户 url 之后的剩余部分，

 NSString *requestUrl = [[NSString stringWithFormat:@"%@/?query=where UserName='%@'&companyId=&page=1&pageSize=25&filterResultByColumns=true",<TENANT_URL>,userCredential.userName]stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

    requestUrl = [NSString stringWithFormat:@"%@/%@",baseurl,requestUrl];

这是我的 GET 请求。

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
        AFHTTPResponseSerializer *serializer = [AFHTTPResponseSerializer serializer];

            serializer.acceptableContentTypes = [NSSet setWithObject:@"application/json"];


        manager.responseSerializer = serializer;
        manager.requestSerializer = [AFJSONRequestSerializer serializer];
    NSString *path = [NSString stringWithFormat:@"%@",URL];


    [manager GET:path parameters:parameters success:^(AFHTTPRequestOperation *operation, id responseObject) {
                    NSError* error = nil;
                    NSArray* json = [NSJSONSerialization
                                          JSONObjectWithData:responseObject

                                          options:kNilOptions 
                                          error:&error];
                    success(json);
                }
                     failure:^(AFHTTPRequestOperation *operation, NSError *error) {
                         failure(error);
                     }];

但我总是收到 400 Bad request 错误。我认为问题在于“query=where ..”。但我不确定。我如何解析 URL。我在 Chrome 中使用“POSTMAN”进行了测试。它工作得很好。但是当我运行该应用程序时它会抛出一个错误。

错误:

Error Domain=AFNetworkingErrorDomain Code=-1011 "Request failed: bad request (400)" UserInfo=0xb7ac2b0 {NSErrorFailingURLKey=https://<BASE_URL>/<TENANT_URL>/?query=where UserName='abc'&companyId=&page=1&pageSize=25&filterResultByColumns=true&url=https%3A%2F%2F<BASE_URL>%2F%2F<TENANT_URL>%2F%3F?query=where%2DUserName%3D%27abc%27%26companyId%3D%26page%3D1%26pageSize%3D25%26filterResultByColumns%3Dtrue, AFNetworkingOperationFailingURLResponseErrorKey=<NSHTTPURLResponse: 0xb7e6910> { URL: https://<BASE_URL>/<TENANT_URL>/?query=where UserName='abc'&companyId=&page=1&pageSize=25&filterResultByColumns=true&url=https%3A%2F%2F<BASE_URL>%2F%2F<TENANT_URL>%2F%3F?query=where%2DUserName%3D%27abc%27%26companyId%3D%26page%3D1%26pageSize%3D25%26filterResultByColumns%3Dtrue } { status code: 400, headers {
    "Cache-Control" = private;
    "Content-Length" = 0;
    "Content-Type" = "text/html";
    Date = "Fri, 17 Jan 2014 05:29:56 GMT";
    Server = "Microsoft-HTTPAPI/2.0";
    "X-AspNet-Version" = "4.0.30319";
    "X-Powered-By" = "ASP.NET";
} }, NSLocalizedDescription=Request failed: bad request (400)}

Answer 1

看起来您正在构建的 URL 以及您将参数传递(或不传递)到 AFNetworking 的方式存在许多问题。您不需要自己构建查询字符串，因为 AFNetworking 会为您完成。正如我在上面的评论中提到的，将 query=where UserName='abc' 作为 URL 的一部分传递似乎不是一个好主意。但是，这里有一个简单的示例，说明如果您的 URL 略有不同，您将如何调用 AFNetworking 的 GET 方法:

// URL format: https://<BASE_URL>/<TENANT_URL>/?username=abc&companyId=&page=1&pageSize=25&filterResultByColumns=true

NSURL *baseURL = [NSURL URLWithScheme:@"https" host:BASE_URL path:TENANT_URL];

[manager GET:[baseURL absoluteString] 
  parameters:@{ @"username": @"abc",
                @"companyId": @"example",
                @"page": @1,
                @"pageSize": @25,
                @"filterResultByColumns": @YES }
     success:^(AFHTTPRequestOperation *operation, id responseObject) {
            // handle success
            }
     failure:^(AFHTTPRequestOperation *operation, NSError *error) {
            // handle failure
            }];

如果您将参数传递给 GET 方法，AFNetworking 将为您构建查询字符串。