2-13 自由编程
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
<style>
</style>
</head>
<body>
<div style="line-height: 37px; font-size: 23px">
<p>加法计算器</p>
<form action="http://localhost:8080/Sum/sum">
<label>加数1：</label>
<input type="text" name="a1" value=""> </br>
<label>加数2：</label>
<input type="text" name="a2" value=""> </br>
<input type="submit" value="计算"> </br>
</form>
</div>
</body>
</html>
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
<display-name>Sum</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>sum</servlet-name>
<servlet-class>com.immoc.Servlet.SumCumputer</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>sum</servlet-name>
<url-pattern>/sum</url-pattern>
</servlet-mapping>
</web-app>
package com.immoc.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 SumCumputer extends HttpServlet{
@Override
protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
//super.service(arg0, arg1);
request.setCharacterEncoding("utf-8");
response.setCharacterEncoding("utf8");
response.setContentType("text/html;charset=utf-8");
String a1=request.getParameter("a1");
String a2=request.getParameter("a2");
int sum=Integer.parseInt(a1)+Integer.parseInt(a2);
PrintWriter out=response.getWriter();
out.println("<p>加法计算器：</br>运算结果为：" + sum + "</p></br>");
}
}
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