求助！jsp运行错误 - J2EE论坛 - JAVA论坛

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package

import javax.servlet.*;
import javax.servlet.http.*;
import *;

public class HelloServlet extends HttpServlet {

    //Initialize global variables
    public void init(ServletConfig config) throws ServletException {
        super.init(config);
    }

    //Process the HTTP Get request
    public void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
        response.setContentType("text/html;charset=GB2312");
        PrintWriter out = response.getWriter();

        out.println("<html>");
        out.println("<head><title>CH2 - HelloServlet</title></head>");
        out.println("<body>");
        out.println(" Hello World <br>");
        out.println("大家好");
        out.println("</body>");
        out.println("</html>");

        out.close();
    }

    //Get Servlet information
    public String getServletInfo() {
        return " Information";
    }
}

初学照着书上的方法运行的！还是不好用！

电脑一开一关，一天过去了