Java/checkcode/src/com/servlet/LoginServlet.java at master · codingQing/Java · GitHub

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package com.servlet;

import java.io.IOException;

import java.io.PrintWriter;

import javax.servlet.ServletException;

import javax.servlet.annotation.WebServlet;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

@WebServlet("/servlet/LoginServlet")

public class LoginServlet extends HttpServlet{

@Override

protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

String codes = req.getSession().getAttribute("codes").toString();

String mycode = req.getParameter("checkcode");

resp.setCharacterEncoding("utf-8");

PrintWriter out = resp.getWriter();

if(mycode.toUpperCase().equals(codes)){

out.println("验证码输入正确！");

}else{

out.println("验证码输入错误！");

}

out.flush();

out.close();

}