servlet编写简单计算器
Posted jakermk
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1、servlet内代码
package lianxi;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class jiafa extends HttpServlet {
private static final long serialVersionUID = 1L;
public jiafa() {
super();
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
response.setContentType("text/html");
response.setCharacterEncoding("UTF-8");
String num1=request.getParameter("shu1");
String num2=request.getParameter("shu2");
int a=Integer.parseInt(num1);
int b=Integer.parseInt(num2);
int sum=a+b;
response.getWriter().write("两个数之和："+sum);
int cheng=a*b;
response.getWriter().write("<br>两个数之积："+cheng);
int cha=a-b;
response.getWriter().write("<br>两个数之差："+cha);
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doGet(request, response);
}
}
2、jsp内代码
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>加法运算</title>
</head>
<body>
<form action="jiafa" method="post">
请输入第一个数字：<input type="text" name="shu1"><br>
请输入第二个数字：<input type="text" name="shu2"><br>
<input type="submit" value="确定">
</form>
</body>
</html>
3、运算结果
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