Question

我正在尝试为我的应用程序编写一个简单的运行状况检查servlet，以查看我的Tomcat服务器是否正在运行。从本质上讲，它是一个带有“/ health”端点的servlet，它是一个空页面。以下是我的代码：

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URL;

public class HealthCheckServlet extends HttpServlet
{

private static final String SUCCESS = "Success";
private static final String FAILURE = "Failure";

@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
{
    isConnectionOK(request);
}

private static String isConnectionOK(HttpServletRequest request) throws IOException
{

    String status = "";

    try
    {
        URL connectionURL = new URL(request.getRequestURL().toString() + "/health");
        HttpURLConnection connection = (HttpURLConnection) connectionURL.openConnection();
        connection.setRequestMethod("GET");
        connection.connect();

        int httpResponseCode = connection.getResponseCode();

        if (httpResponseCode == 200)
        {
            status = SUCCESS;
        }
    }

    catch (IOException e)
    {
        status = FAILURE;
    }

    return status;
}

}

当我导航到localhost：8080 / health并对其进行调试时，它会在URL connectionURL = new URL(request.getRequestURL().toString() + "/health");到达我的断点，但不会进入任何后续断点。页面本身返回的状态代码为200，所以我只是想让代码接受它。

我是否在尝试在servlet中建立此连接时出错了，或者是否存在其他问题？

运行状况检查servlet没有建立连接？

0 个答案: