发出一个http post请求以在Blackberry OS中发送一个json文件＆lt; 7.X

Question

我想从我的BB设备向我的本地服务器发送一个JSON文件。在iOS上，我使用了ASIHttpRequest库，我所做的是：

//send json file , using ASIHttpClass
NSURL *url = [NSURL URLWithString:urlStr];
ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:url];
request.timeOutSeconds = TIME_OUT_SECONDS;
[request setRequestMethod:@"PUT"];

NSString *credentials= [self encodeCredentials];
[request addRequestHeader:@"Authorization" value:[[NSString alloc] initWithFormat:@"Basic %@",credentials]];
[request addRequestHeader:@"Content-Type" value:@"application/json; charset=utf-8"];        

[request appendPostData:[jsonString dataUsingEncoding:NSUTF8StringEncoding]];
[request startSynchronous];

if([request responseStatusCode]==200){
   return true;
} else {
     return false;
    }

我如何在BlackBerry OS中实现相同的功能＆lt; 7.X申请？