自定义servlet重写doGet或者doPost方法时，405 method not allowed

Posted 2021-01-26 qf123

自定义servlet

public class TestServlet extends HttpServlet {

	@Override
	protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
		super.doGet(req, resp);
		
	}
}

HttpServlet里的doGet方法是这样定义的

    protected void doGet(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException
    {
        String protocol = req.getProtocol();
        String msg = lStrings.getString("http.method_get_not_supported");
        if (protocol.endsWith("1.1")) {
            resp.sendError(HttpServletResponse.SC_METHOD_NOT_ALLOWED, msg);
        } else {
            resp.sendError(HttpServletResponse.SC_BAD_REQUEST, msg);
        }
    }

所以重写doGet/doPost方法时，必须先将super.doGet(...)/super.doPost(...)删掉