标签：style class blog java http ext
一、控制台实现乘法表
package com.shanrengo;
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 MultiTableServlet extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
for (int i = 1; i <= 9; i++) {
for (int j = 1; j <= i; j++) {
System.out.print(j + "*" + i + "=" + j*i + "\t");
}
System.out.println();
}
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doGet(request, response);
}
}
二、输出浏览器代码修改
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
PrintWriter out = response.getWriter();
for (int i = 1; i <= 9; i++) {
for (int j = 1; j <= i; j++) {
out.print(j + "*" + i + "=" + j*i + "\t");
}
out.println();
}
}
三、让用户提交一个数字
1.新建一个用户页面input.html
<form action="MultiTableServlet" method="post"> 请输入一个数字:<input type="text" name="number"/> <input type="submit" value="打印"/> </form>
action可填写相对路劲，也可以填写绝对路径
相对路径：将URL最后地址换成相对地址，例如action填写MultiTableServlet就可以了。
如果input.html页面和MultiTableServlet不是同一个目录的，则会出现404错误，如果是在上一个目录就要再action填写../MultiTableServlet
绝对路径：action填写，/testServlet/MutiTableServlet或者http://localhost:8080/testServlet/MutiTableServlet
2.修改Servlet
package com.shanrengo;
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 MultiTableServlet extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String numberStr = request.getParameter("number");
int number = 0;
try {
number = Integer.parseInt(numberStr);
} catch (NumberFormatException e) {
// TODO Auto-generated catch block
//e.printStackTrace();
throw new RuntimeException("不是数字");
}
PrintWriter out = response.getWriter();
for (int i = 1; i <= number; i++) {
for (int j = 1; j <= i; j++) {
out.print(j + "*" + i + "=" + j*i + "\t");
}
out.println();
}
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doGet(request, response);
}
}
项目附件：http://pan.baidu.com/s/1pJugL31
注：我是初学者，发表博客只是学习笔记，欢迎探讨指教，希望可以结实良师益友。
标签：style class blog java http ext
原文地址：http://www.cnblogs.com/nophy/p/3791273.html
