package com.helloweenvsfei.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class LifeCycleServlet extends HttpServlet {
/**
*
*/
private static final long serialVersionUID = 1L;
@Override
public void log(java.lang.String msg)
{
System.out.println(msg);
}
/**
* Constructor of the object.
*/
public LifeCycleServlet() {
super();
this.log("LifeCycleServlet()... ");
//ServletConfig conf = this.getServletConfig();
//startPoint = Double.parseDouble(conf.getInitParameter("startPoint"));
}
/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
@Override
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
this.log("执行 doGet() 方法 ... ");
response.setCharacterEncoding("UTF-8");
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("<link rel='stylesheet' type='text/css' href='../css/style.css'>");
out.println("<HTML><HEAD><TITLE>个人所得税计算</TITLE></HEAD>");
out.println("<div align='center'><br/><fieldset style=width:90%><legend>个税计算器</legend><br/>");
out.println("<form method='post' action='LifeCycleServlet'>");
out.println("<div style='line'>");
out.println(" <div class='leftDiv'>您的工资为</div><div align='left' class='rightDiv'><input type='text' name='income'> 单位：元</div>");
out.println("</div><br/>");
out.println("<div style='line'>");
out.println(" <div class='leftDiv'></div><div align='left' class='rightDiv'><input type='submit' value=' 计算个税 ' class=button></div>");
out.println("</div>");
out.println("</form>");
out.println("<BODY>");
out.println("</BODY>");
out.println("</HTML>");
out.flush();
out.close();
}
@Override
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
this.log("执行 doPost() 方法 ... ");
response.setCharacterEncoding("UTF-8");
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("<HTML><HEAD><TITLE>个人所得税计算</TITLE></HEAD>");
out.println("<link rel='stylesheet' type='text/css' href='../css/style.css'>");
out.println("<BODY>");
out.println("<div align='center'><br/><fieldset style=width:90%><legend>个税计算器</legend><br/>");
try{
// 从参数中获取的工资数目
double income = new Double(request.getParameter("income"));
// 应纳税部分
double charge = income - startPoint;
// 缴税
double tax = 0;
if (charge<=0) {tax=0;}
if (charge>0&&charge<=500) {tax=charge*0.05;}
if (charge>500&&charge<=2000) {tax=charge*0.1-25;}
if (charge>2000&&charge<=5000) {tax=charge*0.15-125;}
if (charge>5000&&charge<=20000) {tax=charge*0.2-375;}
if (charge>20000&&charge<=40000) {tax=charge*0.25-1375;}
if (charge>40000&&charge<=60000) {tax=charge*0.30-3375;}
if (charge>60000&&charge<=80000) {tax=charge*0.35-6375;}
if (charge>80000&&charge<=100000) {tax=charge*0.4-10375;}
if (charge>100000) {tax=charge*0.45-15375;}
out.println("<div style='line'>");
out.println(" <div class='leftDiv'>您的工资为</div><div class='rightDiv'>" + income + " 元</div>");
out.println("</div>");
out.println("<div style='line'>");
out.println(" <div class='leftDiv'>您应纳税</div><div class='rightDiv'>" + tax + " 元</div>");
out.println("</div><br/>");
out.println("<input type='button' onclick='history.go(-1);' value='纳税光荣 逃税可耻 返回' class=button>");
}catch(Exception e){
out.println("请输入数值类型数据。<input type='button' onclick='history.go(-1);' value='返回' class=button>");
}
out.println("</BODY>");
out.println("</HTML>");
out.flush();
out.close();
}
private static double startPoint = 0;
@Override
public void init() throws ServletException {
this.log("执行 init() 方法 ... ");
ServletConfig conf = this.getServletConfig();
startPoint = Double.parseDouble(conf.getInitParameter("startPoint"));
}
}
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
<display-name></display-name>
<servlet>
<description>This is the description of my J2EE component</description>
<display-name>This is the display name of my J2EE component</display-name>
<servlet-name>LifeCycleServlet</servlet-name>
<servlet-class>com.helloweenvsfei.servlet.LifeCycleServlet</servlet-class>
<init-param>
<param-name>startPoint</param-name>
<param-value>2000</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>LifeCycleServlet</servlet-name>
<url-pattern>/servlet/LifeCycleServlet</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
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