- employeeList.html -
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Employee List</title>
<script language="javascript" type="text/javascript" src="createXMLHttpRequest.js"></script>
<script type="text/javascript">
var xmlHttp;
var name;
var title;
var department;
var deleteID;
var EMP_PREFIX = "emp-";
function addEmployee() {
name = document.getElementById("name").value;
title = document.getElementById("title").value;
department = document.getElementById("dept").value;
action = "add";
if(name == "" || title == "" || department == "") {
return;
}
var url = "EmployeeListServlet?"
+ createAddQueryString(name, title, department, "add")
+ "&ts=" + new Date().getTime();
xmlHttp = createXMLHttpRequest();
xmlHttp.onreadystatechange = handleAddStateChange;
xmlHttp.open("GET", url, true);
xmlHttp.send(null);
}
function createAddQueryString(name, title, department, action) {
var queryString = "name=" + name
+ "&title=" + title
+ "&department=" + department
+ "&action=" + action;
return queryString;
}
function handleAddStateChange() {
if(xmlHttp.readyState == 4) {
if(xmlHttp.status == 200) {
updateEmployeeList();
clearInputBoxes();
}
else {
alert("Error while adding employee.");
}
}
}
function updateEmployeeList() {
var responseXML = xmlHttp.responseXML;
var status = responseXML.getElementsByTagName("status").item(0).firstChild.nodeValue;
status = parseInt(status);
if(status != 1) {
return;
}
var row = document.createElement("tr");
var uniqueID = responseXML.getElementsByTagName("uniqueID")[0].firstChild.nodeValue;
row.setAttribute("id", EMP_PREFIX + uniqueID);
row.appendChild(createCellWithText(name));
row.appendChild(createCellWithText(title));
row.appendChild(createCellWithText(department));
var deleteButton = document.createElement("input");
deleteButton.setAttribute("type", "button");
deleteButton.setAttribute("value", "삭제");
deleteButton. = function () { deleteEmployee(uniqueID); };
var cell = document.createElement("td");
cell.appendChild(deleteButton);
row.appendChild(cell);
document.getElementById("employeeList").appendChild(row);
updateEmployeeListVisibility();
}
function deleteEmployee(id) {
deleteID = id;
var url = "EmployeeListServlet?"
+ "action=delete"
+ "&id=" + id
+ "&ts=" + new Date().getTime();
xmlHttp = createXMLHttpRequest();
xmlHttp.onreadystatechange = handleDeleteStateChange;
xmlHttp.open("GET", url, true);
xmlHttp.send(null);
}
function handleDeleteStateChange() {
if(xmlHttp.readyState == 4) {
if(xmlHttp.status == 200) {
deleteEmployeeFromList();
}
else {
alert("Error while deleting employee.");
}
}
}
function deleteEmployeeFromList() {
//var status = xmlHttp.responseXML.getElementsByTagName("status").item(0).firstChild.nodeValue;
var status = xmlHttp.responseXML.getElementsByTagName("status")[0].firstChild.data;
status = parseInt(status);
if(status != 1) {
return;
}
var rowToDelete = document.getElementById(EMP_PREFIX + deleteID);
var employeeList = document.getElementById("employeeList");
employeeList.removeChild(rowToDelete);
updateEmployeeListVisibility();
}
function createCellWithText(text) {
var cell = document.createElement("td");
cell.appendChild(document.createTextNode(text));
return cell;
}
function updateEmployeeListVisibility() {
var employeeList = document.getElementById("employeeList");
if(employeeList.childNodes.length > 0) {
document.getElementById("employeeListSpan").style.display = "";
}
else {
document.getElementById("employeeListSpan").style.display = "none";
}
}
function clearInputBoxes() {
document.getElementById("name").value = "";
document.getElementById("title").value = "";
document.getElementById("dept").value = "";
}
</script>
</head>
<body>
<h1>직원 명단</h1>
<form action="#">
<table width="80%" border="0">
<tr>
<td>이름 : <input type="text" id="name"/></td>
<td>직위 : <input type="text" id="title"/></td>
<td>부서 : <input type="text" id="dept"/></td>
</tr>
<tr>
<td colspan="3" align="center">
<input type="button" value="추가" ="addEmployee();"/>
</td>
</tr>
</table>
</form>
<span id="employeeListSpan" style="display:none;">
<h2>직원명부 : </h2>
<table border="1" width="80%">
<tbody id="employeeList"></tbody>
</table>
</span>
</body>
</html>
- 서블릿~
package kr.co.com;
import java.io.*;
import java.net.*;
import java.util.Random;
import javax.servlet.*;
import javax.servlet.http.*;
public class EmployeeListServlet extends HttpServlet {
protected void addEmployee(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
//Store the object in the databasez
String uniqueID = storeEmployee();
//Create the response XML
StringBuffer xml = new StringBuffer("<result><uniqueID>");
xml.append(uniqueID);
xml.append("</uniqueID>");
xml.append("<status>1</status>");
xml.append("</result>");
//Send the response back to the browser
sendResponse(response, xml.toString());
}
protected void deleteEmployee(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String id = request.getParameter("id");
/* Assume that a call is made to delete the employee from the database */
//Create the response XML
StringBuffer xml = new StringBuffer("<result>");
xml.append("<status>1</status>");
xml.append("</result>");
//Send the response back to the browser
sendResponse(response, xml.toString());
}
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String action = request.getParameter("action");
if(action.equals("add")) {
addEmployee(request, response);
}
else if(action.equals("delete")) {
deleteEmployee(request, response);
}
}
private String storeEmployee() {
String uniqueID = "";
Random randomizer = new Random(System.currentTimeMillis());
for(int i = 0; i < 8; i++) {
uniqueID += randomizer.nextInt(9);
}
return uniqueID;
}
private void sendResponse(HttpServletResponse response, String responseText)
throws IOException {
response.setContentType("text/xml");
response.getWriter().write(responseText);
}
}
- DB연결하면 쓸만한~