通過HttpServletResponse 的sendError(sc, msg); 可將異常資訊在網頁上顯示

 程式碼：

package www.csdn.net.day35.servlet;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class DemoServlet1 extends HttpServlet {

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

		try{
		int i=1/0;
		}catch(Exception e){
			//設定錯誤介面及內容
			response.sendError(response.SC_NOT_FOUND, e.getMessage());
		}
		
		
	}

	
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
   
		this.doGet(request, response);
	}

}
 

效果：