Question

I am trying to login to a website using java.net in Google App Engine for Java. The login id and password are stored in variables loginid and password respectively.

我制定的法典如下:

public Integer login()
{

    String param1="", param2="", query="";
    String charset = "UTF-8";
    String loginurl = "https://website.com/login";
    try {
        param1 = URLEncoder.encode(loginid, "UTF-8");
        param2 = URLEncoder.encode(password, "UTF-8");
        query = String.format("username=%s&password=%s", 
                 URLEncoder.encode(param1, charset), 
                 URLEncoder.encode(param2, charset));
    } catch (UnsupportedEncodingException ex) {
        // ...
    }
    try {
        URL url = new URL(loginurl + "?" + query);
        BufferedReader reader = new BufferedReader(new InputStreamReader(url.openStream()));
        String line="";
        String resp="";
        while ((line = reader.readLine()) != null) {
        resp=resp + line;
        }
         actionmessage=" Response-" + resp;              
            return(1);   
    }

    catch (Exception e) {
        // ...

    }
  }

我想更多地了解一下上述法典的两条内容。

我确信,我已经进入正确的身份证和密码,但我仍在 log。上述法典有什么错误?
How do I check if a submission as made by above code is successful or if there is an error? If there is an error, how do I get the error stream?

Answer 1

这是我方面的一个错误,它把2个参数输入了ur,两倍! 因此,我正在认证的网址获得了用户id和密码的加固价值!

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