java - 使用 PHP : withg java. lang.Exception 连接时出现问题:HTTP 错误:401

Question

我有这段代码，他应该连接到一个 php 远程文件并应该获取一个表示 XML 文件的字符串。但出了点问题，它给了我错误 401。

变量url是php的方向:

String response=getXML("http://ficticiousweb.com/scripts/getMagazinesList.php");

如果我将真实的方向(即虚构的方向)粘贴到网络浏览器上，它就会工作并为我提供 XML。

这是我的代码:

public String getXML(String url){
    try{
        StringBuilder builder = new StringBuilder();
        HttpClient httpclient = new DefaultHttpClient();
        HttpGet httpget = new HttpGet(url);
        HttpResponse response = httpclient.execute(httpget);
        int statuscode = response.getStatusLine().getStatusCode();
        if(statuscode == 200)
        {
            HttpEntity entity = response.getEntity();
            InputStream content = entity.getContent();
            BufferedReader reader = new BufferedReader(new InputStreamReader(content));
            String line;
            while ((line = reader.readLine()) != null)  builder.append(line);               
        }
        else throw new Exception("HTTP error: " + String.valueOf(statuscode));
        return builder.toString();
    }catch(Exception e){e.printStackTrace();}
    return null;
}

代码有什么问题？

谢谢

Answer 1

您需要登录到请求的站点才能下载或访问 xml。这可以通过基于支持的经过身份验证的模式来完成。通常，使用两种类型的模式。 基本和摘要。下面的代码将帮助您进行基本身份验证。

HttpClient httpclient = new DefaultHttpClient();
    HttpResponse response;
    String _username = "username";
    String _password = "password";
    try {
         ((AbstractHttpClient) httpclient).getCredentialsProvider().setCredentials(
                new org.apache.http.auth.AuthScope(webhostname, webport)),
                new org.apache.http.auth.UsernamePasswordCredentials(_username, _password));

        response = httpclient.execute(new HttpGet(completeurlhere));
        StatusLine statusLine = response.getStatusLine();
        if(statusLine.getStatusCode() == HttpStatus.SC_OK) {
            try {
                InputStream is = response.getEntity().getContent();
                this._data = is;

            } catch(Exception ex) {
                Log.e("DBF Error",ex.toString());
            }                
        } else {
            response.getEntity().getContent().close();
            throw new IOException(statusLine.getReasonPhrase());
        }
    } catch(ClientProtocolException cpe) {
        Log.e("ClientProtocolException @ at FPT",cpe.toString());
    } catch(Exception ex) {
        Log.e("Exception at FETCHPROJECTASK",ex.toString());
    }