(本文转自:http://daishuanglong.iteye.com/blog/788199)
- 1.服务器端代码:
-
- (1)AutoCompleteServlet.java源代码:
- Java代码
- package servlet;
-
- import java.io.IOException;
-
- import javax.servlet.ServletException;
- import javax.servlet.http.HttpServlet;
- import javax.servlet.http.HttpServletRequest;
- import javax.servlet.http.HttpServletResponse;
-
-
-
-
-
- public class AutoCompleteServlet extends HttpServlet {
-
- public void doGet(HttpServletRequest request, HttpServletResponse response)
- throws ServletException, IOException {
-
- String word = request.getParameter("word");
-
- request.setAttribute("word", word);
-
- request.getRequestDispatcher("wordxml.jsp").forward(request, response);
- }
-
- public void doPost(HttpServletRequest request, HttpServletResponse response)
- throws ServletException, IOException {
- doGet(request, response);
- }
- }
-
- package servlet;
-
- import java.io.IOException;
-
- import javax.servlet.ServletException;
- import javax.servlet.http.HttpServlet;
- import javax.servlet.http.HttpServletRequest;
- import javax.servlet.http.HttpServletResponse;
-
-
-
-
-
- public class AutoCompleteServlet extends HttpServlet {
-
- public void doGet(HttpServletRequest request, HttpServletResponse response)
- throws ServletException, IOException {
-
- String word = request.getParameter("word");
-
- request.setAttribute("word", word);
-
- request.getRequestDispatcher("wordxml.jsp").forward(request, response);
- }
-
- public void doPost(HttpServletRequest request, HttpServletResponse response)
- throws ServletException, IOException {
- doGet(request, response);
- }
- }
-
- (2)wordxml.jsp源代码:
- Jsp代码
- <!-- 与传统应用的视图层不同,这个jsp返回的是xml的数据,因此contentType的值是text/xml -->
- <%@ page import="java.util.*" contentType="text/xml; charset=UTF-8"%>
- <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
- <%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %>
- <!-- 返回xml数据的"视图层"暂时不做任何逻辑,先将所有单词都返回,
- 待前后台应用可以协作之后,再限制返回的内容 -->
- <%
-
- String word = (String)request.getAttribute("word");
- String[] words = {"absolute", "anyone", "anything", "apple", "abandon", "breach", "break", "boolean"};
- request.setAttribute("list", Arrays.asList(words));
- %>
- <words>
- <c:forEach items="${list}" var="aWord">
- <c:if test="${fn:startsWith(aWord, word)}">
- <word><c:out value="${aWord}"></c:out></word>
- </c:if>
- </c:forEach>
- </words>
-
- <!-- 与传统应用的视图层不同,这个jsp返回的是xml的数据,因此contentType的值是text/xml -->
- <%@ page import="java.util.*" contentType="text/xml; charset=UTF-8"%>
- <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
- <%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %>
- <!-- 返回xml数据的"视图层"暂时不做任何逻辑,先将所有单词都返回,
- 待前后台应用可以协作之后,再限制返回的内容 -->
- <%
-
- String word = (String)request.getAttribute("word");
- String[] words = {"absolute", "anyone", "anything", "apple", "abandon", "breach", "break", "boolean"};
- request.setAttribute("list", Arrays.asList(words));
- %>
- <words>
- <c:forEach items="${list}" var="aWord">
- <c:if test="${fn:startsWith(aWord, word)}">
- <word><c:out value="${aWord}"></c:out></word>
- </c:if>
- </c:forEach>
- </words>
- 2.客户端程序
-
- (1)JQueryAuto.html源代码
- Html代码
- <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
- <html>
- <head>
- <meta http-equiv="content-type" content="text/html; charset=UTF-8">
- <script type="text/javascript" src="js/jquery-1.3.2.js"></script>
- <script type="text/javascript" src="js/jqueryauto.js"></script>
- <title>JQuery实例5:仿Google Suggest自动补齐</title>
- </head>
-
- <body>
- 自动补完实例:<input type="text" id="word" />
- <input type="button" value="提示" /><br />
- <div id="auto"></div>
- </body>
- </html>
-
- <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
- <html>
- <head>
- <meta http-equiv="content-type" content="text/html; charset=UTF-8">
- <script type="text/javascript" src="js/jquery-1.3.2.js"></script>
- <script type="text/javascript" src="js/jqueryauto.js"></script>
- <title>JQuery实例5:仿Google Suggest自动补齐</title>
- </head>
-
- <body>
- 自动补完实例:<input type="text" id="word" />
- <input type="button" value="提示" /><br />
- <div id="auto"></div>
- </body>
- </html>
- (2)jqueryauto.js源代码:
- Js代码
- $(document).ready(function() {
-
- var autoNode = $("#auto");
- var wordInput = $("#word");
-
- var highlightindex = -1;
- var timeoutId;
-
-
-
- var wordInputOffset = wordInput.offset();
-
- autoNode.hide().css("border", "1px black solid").css("position", "absolute")
- .css("top", wordInputOffset.top + wordInput.height() + 5 + "px")
- .css("left", wordInputOffset.left + "px")
- .width(wordInput.width() + 2);
-
-
- wordInput.keyup(function(event) {
-
-
- var myEvent = event || window.event;
- var keyCode = myEvent.keyCode;
-
-
- if (keyCode >= 65 && keyCode <= 90 || keyCode == 8 || keyCode == 48){
-
- var wordText = wordInput.val();
-
- if (wordText != "") {
-
- clearTimeout(timeoutId);
- timeoutId = setTimeout(function() {
- $.post("AutoCompleteServlet", {word:wordText}, function(data) {
-
- var jqueryObj = $(data);
-
- var wordNodes = jqueryObj.find("word");
-
- autoNode.html("");
-
- wordNodes.each(function(i) {
-
- var wordNode = $(this);
-
-
- var newDivNode = $("<div>");
- newDivNode.html(wordNode.text()).appendTo(autoNode);
-
- newDivNode.mouseover(function() {
-
- if (highlightindex != -1) {
- autoNode.children("div").eq(highlightindex)
- .css("background-color", "white");
- }
-
- highlightindex = i;
-
- $(this).css("background-color", "red");
- });
-
- newDivNode.mouseout(function() {
-
- $(this).css("background-color", "white");
- });
-
- newDivNode.click(function() {
-
- var comText = autoNode.hide().children("div").eq(highlightindex).text();
- highlightindex = -1;
-
- $("#word").val(comText);
- });
- });
-
- if(wordNodes.length > 0) {
- autoNode.show();
- } else {
- autoNode.hide();
- }
- },"xml");
- }, 200);
-
- } else {
- autoNode.hide();
-
- highlightindex = -1;
- }
- } else if (keyCode == 38 || keyCode == 40) {
-
- if (keyCode == 38) {
-
- var autoNodes = autoNode.children("div");
- if (highlightindex != -1) {
-
- autoNodes.eq(highlightindex).css("background-color", "white");
- highlightindex --;
- }
- if (highlightindex == -1) {
-
- highlightindex = autoNodes.length -1;
- }
-
- autoNodes.eq(highlightindex).css("background-color", "red");
- } else {
-
- var autoNodes = autoNode.children("div");
- if (highlightindex != -1) {
-
- autoNodes.eq(highlightindex).css("background-color", "white");
- }
- highlightindex ++;
- if (highlightindex == autoNodes.length) {
-
- highlightindex = 0;
- }
-
- autoNodes.eq(highlightindex).css("background-color", "red");
- }
-
- } else if (keyCode == 13) {
-
-
- if (highlightindex != -1) {
-
- var comText = autoNode.hide().children("div").eq(highlightindex).text();
- highlightindex = -1;
-
- $("#word").val(comText);
- } else {
-
- alert("文本框中的[" + wordInput.val() + "]被提交了");
- autoNode.hide();
-
- wordInput.get(0).blur();
- }
- }
- });
-
- $("input[type='button']").click(function() {
- alert("文本框中的[" + wordInput.val() + "]被提交了");
- });
-
- });
-
- $(document).ready(function() {
-
- var autoNode = $("#auto");
- var wordInput = $("#word");
-
- var highlightindex = -1;
- var timeoutId;
-
-
-
- var wordInputOffset = wordInput.offset();
-
- autoNode.hide().css("border", "1px black solid").css("position", "absolute")
- .css("top", wordInputOffset.top + wordInput.height() + 5 + "px")
- .css("left", wordInputOffset.left + "px")
- .width(wordInput.width() + 2);
-
-
- wordInput.keyup(function(event) {
-
-
- var myEvent = event || window.event;
- var keyCode = myEvent.keyCode;
-
-
- if (keyCode >= 65 && keyCode <= 90 || keyCode == 8 || keyCode == 48){
-
- var wordText = wordInput.val();
-
- if (wordText != "") {
-
- clearTimeout(timeoutId);
- timeoutId = setTimeout(function() {
- $.post("AutoCompleteServlet", {word:wordText}, function(data) {
-
- var jqueryObj = $(data);
-
- var wordNodes = jqueryObj.find("word");
-
- autoNode.html("");
-
- wordNodes.each(function(i) {
-
- var wordNode = $(this);
-
-
- var newDivNode = $("<div>");
- newDivNode.html(wordNode.text()).appendTo(autoNode);
-
- newDivNode.mouseover(function() {
-
- if (highlightindex != -1) {
- autoNode.children("div").eq(highlightindex)
- .css("background-color", "white");
- }
-
- highlightindex = i;
-
- $(this).css("background-color", "red");
- });
-
- newDivNode.mouseout(function() {
-
- $(this).css("background-color", "white");
- });
-
- newDivNode.click(function() {
-
- var comText = autoNode.hide().children("div").eq(highlightindex).text();
- highlightindex = -1;
-
- $("#word").val(comText);
- });
- });
-
- if(wordNodes.length > 0) {
- autoNode.show();
- } else {
- autoNode.hide();
- }
- },"xml");
- }, 200);
-
- } else {
- autoNode.hide();
-
- highlightindex = -1;
- }
- } else if (keyCode == 38 || keyCode == 40) {
-
- if (keyCode == 38) {
-
- var autoNodes = autoNode.children("div");
- if (highlightindex != -1) {
-
- autoNodes.eq(highlightindex).css("background-color", "white");
- highlightindex --;
- }
- if (highlightindex == -1) {
-
- highlightindex = autoNodes.length -1;
- }
-
- autoNodes.eq(highlightindex).css("background-color", "red");
- } else {
-
- var autoNodes = autoNode.children("div");
- if (highlightindex != -1) {
-
- autoNodes.eq(highlightindex).css("background-color", "white");
- }
- highlightindex ++;
- if (highlightindex == autoNodes.length) {
-
- highlightindex = 0;
- }
-
- autoNodes.eq(highlightindex).css("background-color", "red");
- }
-
- } else if (keyCode == 13) {
-
-
- if (highlightindex != -1) {
-
- var comText = autoNode.hide().children("div").eq(highlightindex).text();
- highlightindex = -1;
-
- $("#word").val(comText);
- } else {
-
- alert("文本框中的[" + wordInput.val() + "]被提交了");
- autoNode.hide();
-
- wordInput.get(0).blur();
- }
- }
- });
-
- $("input[type='button']").click(function() {
- alert("文本框中的[" + wordInput.val() + "]被提交了");
- });
-
- });
-
- 好了,现在所有的代码已经完成,看一下运行效果吧。
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