JavaBean+Jsp技术实现两个数相加

最新推荐文章于 2021-01-22 03:11:17 发布

傻小菜

最新推荐文章于 2021-01-22 03:11:17 发布

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分类专栏： JAVA Web

本文链接：https://blog.youkuaiyun.com/pxl20171799/article/details/89928977

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JavaBean+Jsp技术，就是在JavaBean的基础上，添加了输入显示页面，使代码清晰美观

主要运用了request的各种方法

JavaBean类

package beans;

public class Add {
	private double shuju1;
	private double shuju2;
	private double sum;
	public double getShuju1() {
		return shuju1;
	}
	public void setShuju1(double shuju1) {
		this.shuju1 = shuju1;
	}
	public double getShuju2() {
		return shuju2;
	}
	public void setShuju2(double shuju2) {
		this.shuju2 = shuju2;
	}
	public double getSum() {
		return sum;
	}
	public void setSum(double sum) {
		this.sum = sum;
	}
	public Add(double shuju1, double shuju2) {
		super();
		this.shuju1 = shuju1;
		this.shuju2 = shuju2;
		this.sum = shuju1 + shuju2;
	}
	public Add() {}
	public double sum()
	{
		return shuju1+shuju2;
	}
}

输入页面

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
 <form action="Add_show.jsp" method="post">
 加数：<input type="text" name="shuju1"><br><br>
 被加数：<input type="text" name="shuju2"><br><br>
 <input type="submit" name="提交" value="提交">
 </form>
</body>
</html>

显示页面

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
    <%@page import="beans.Add" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<%
  Add c=new Add();
  String s1=request.getParameter("shuju1");
  String s2=request.getParameter("shuju2");
  double a=Double.parseDouble(s1);
  double b=Double.parseDouble(s2);
  c.setShuju1(a);
  c.setShuju2(b);
%>
<%=c.getShuju1() %>+<%=c.getShuju2() %>=<%=c.sum()%>
</body>
</html>