Question

所以这似乎是人们看到的常见错误，但我无法解决如何解决它！我正在尝试在Eclipse中编写一个简单的Java EE应用程序（使用JBoss v7.1），并且似乎没有遇到麻烦！我终于陷入了最后的障碍;获取访问令牌。

我正在“手动”编程它;自己设置http帖子：

    @WebServlet("/callback") //user has accepted the authentication, and the auth code is sent to this url
    public class CallBackServlet extends HttpServlet {

            //my vars
            private static final String clientId = "123.apps.googleusercontent.com";
            private static final String clientSecret = "123abc";
            private static final String redirectUri = "http://localhost:8080/WebProjectA/callback";

        protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

                String code = request.getParameter("code"); //grabs the auth code

                //set up http post
                HttpClient client = new HttpClient( );
                String postUrl = "/o/oauth2/token"; 
                HostConfiguration hf=new HostConfiguration();
                hf.setHost("accounts.google.com"); //problems start here. Anything other than "accounts.google.com" results in an 'unknown host' exception

        PostMethod postData = new PostMethod(postUrl);      
        postData.setHostConfiguration(hf);

                //add post message parameters
        postData.addParameter(URLEncoder.encode("code"), URLEncoder.encode(code));
        postData.addParameter(URLEncoder.encode("client_id"), URLEncoder.encode(clientId));
        postData.addParameter(URLEncoder.encode("client_secret"), URLEncoder.encode(clientSecret));
        postData.addParameter(URLEncoder.encode("redirect_uri"), URLEncoder.encode(redirectUri));
        postData.addParameter(URLEncoder.encode("grant_type"), URLEncoder.encode("authorization_code"));

        client.executeMethod(postData);
        String postResponseb = postData.getResponseBodyAsString( );
        out.println(postResponseb); //print the info to the browser
        postData.releaseConnection( );
            }
    }

重定向邮件要求我使用“https://accounts.google.com”主机，但当我将“accounts.google.com”以外的任何内容作为主机时，我会收到未知的主机异常。< / p>

提前感谢您的帮助！

Answer 1

您可以在调用hf.setHost("accounts.google.com",-1,"HTTPS");方法时传递协议。看到java文档。默认情况下，http。

中的协议

“暂时移动”错误谷歌纵横API

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