IDEA 生成servlet模板文件案例

servlet模板文件：

//package com.servlet;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import com.alibaba.fastjson.JSONObject;

/**
 * Servlet implementation class Study_score
 */
@WebServlet("/Servlet_example")
public class Servlet_example extends HttpServlet {
    protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        // TODO Auto-generated method stub
        req.setCharacterEncoding("utf-8");
        String method = req.getParameter("method");
        if ("method_example".equals(method)) {
                method_example(req, resp);
        }
        
        
        
    }   
    public Servlet_example() {
        super();
        // TODO Auto-generated constructor stub
    }

    private void method_example(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException, SQLException {
          // TODO Auto-generated method stub
          //response.getWriter().append("Served at: ").append(request.getContextPath());
          req.setCharacterEncoding("utf-8");
          resp.setContentType("text/html;charset=utf-8");
          HttpSession session=req.getSession();
          PrintWriter out=resp.getWriter();
        System.out.println("AAAAAAAAAAAAA");
        //获取传输过来的值
        String[] translate_example = req.getParameterValues("translate_example");

        //返回页面
        String whole=req.getContextPath()+"/example.html";
        String info="上传成功";
        resp.getWriter().print("<script> var whole=""+whole+"";
" +
                "var r=confirm(""+info+"");
" +
                "if (r==true){
" +
                "        window.location.assign(whole);
" +
                "    }
" +
                "    else{
" +
                "        window.location.assign("./index.jsp");;
" +
                "    }    "
                + "</script>");
          }
  
}

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更改：

package com.servlet;//package com.servlet;

import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import com.alibaba.fastjson.JSONObject;

/**
 * Servlet implementation class Study_score
 */
@WebServlet("/Servlet_example")
public class Servlet_example extends HttpServlet {
    protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
// TODO Auto-generated method stub
        req.setCharacterEncoding("utf-8");
        String method = req.getParameter("method");
        try {
            method_example(req, resp);
        } catch (SQLException throwables) {
            throwables.printStackTrace();
        }
    }

    public Servlet_example() {
        super();
        // TODO Auto-generated constructor stub
    }

    private void method_example(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException, SQLException {
        // TODO Auto-generated method stub
        //response.getWriter().append("Served at: ").append(request.getContextPath());
        req.setCharacterEncoding("utf-8");
        resp.setContentType("text/html;charset=utf-8");
        HttpSession session = req.getSession();
        PrintWriter out = resp.getWriter();
        System.out.println("AAAAAAAAAAAAA");
        //获取传输过来的值
        String[] translate_example = req.getParameterValues("translate_example");
        //返回页面
        String whole = req.getContextPath() + "/example.html";
        String info = "上传成功";
        resp.getWriter().print("<script> var whole="" + whole + "";
" +
                "var r=confirm("" + info + "");
" +
                "if (r==true){
" +
                "        window.location.assign(whole);
" +
                "    }
" +
                "    else{
" +
                "        window.location.assign("./index.jsp");;
" +
                "    }    "
                + "</script>");
    }

}