JSP源码 Mysoo站内搜索 v1.0 Peview_mysoo-1.0-preview.war.rar

// Copyright by mysoo.com.cn // All rights reseved. // usage: client page fire queryProgress() periodly // server side rule: // request send to indexerServlet with parameters Action=AddDocumentAction&step=progress&IndexDir=={workingIndexName} // response structure: // <progress> // <state>integer</state> // indexing state: 0 = none indexing task, 1 = indexing, 2 = finished, 3 = broken, other means internal error // <timeUsed timestamp="stamp">integer</timeUsed> // <indexedCount>integer</indexedCount> // <currentItem>string encoded</currentItem> // <itemsInQue>integer</itemsInQue> // </progress> // client side rule: // client has a span or div with id indexName, its content is the name of working index (no any other character!) // client has an area with id progressPanel to display progress information var finished = 0; function queryProgress(indexName) { var req = XMLRequest(); var progressHandler = ReadyStateHandler(req, updateProgress); req.onreadystatechange = progressHandler; var indexName = document.getElementById("indexName").innerHTML; var queryData = ""; //req.open("GET", "index.do?Action=AddDocumentAction&Step=progress&IndexDir="+indexName, true); queryData = "Action=AddDocumentAction&Step=progress&IndexDir="+indexName; req.open("POST", "index.do", true); req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); req.send(queryData); } function updateProgress(xml) { var progress = xml.getElementsByTagName("progress")[0]; var stateNode = progress.getElementsByTagName("state")[0]; var state = stateNode.firstChild.nodeValue; // index state: 0 = none indexing task, 1 = indexing, 2 = finished, 3 = broken, other means internal error var msg = "索引任务进度 "; if ( state == 0 ) { finished = 0; msg = "没有属于指定目录的索引任务，可能还没到时间 "; }else if ( state == 1 ){ var timeNode = progress.getElementsByTagName("timeUsed")[0]; var timeUsed = timeNode.firstChild.nodeValue; var indexedNode = progress.getElementsByTagName("indexedCount")[0]; var indexedCount = indexedNode.firstChild.nodeValue; var currentItemNode = progress.getElementsByTagName("currentItem")[0]; var currentItem = unescape(currentItemNode.firstChild.nodeValue); var itemsInQueNode = progress.getElementsByTagName("itemsInQue")[0]; var itemsInQue = itemsInQueNode.firstChild.nodeValue; var timestamp = timeNode.getAttribute("timestamp"); msg = "<p>" + "建索引任务已经执行了 " + (timeUsed/1000.0) + " 秒，已经完成 " + indexedCount + " 个文档<br>" + "最近处理过的文档 " + currentItem + "<br>" + "还有 " + itemsInQue + " 个项目等处理 (说明：在处理过程中可能会发现新项) " + "</p>"; }else if ( state == 2 ){ msg = "索引任务已完成！ "; finished = 1; }else if ( state == 3 ){ msg = "索引任务已中断！ "; finished = 1; }else if ( state == -1 ){ msg = "指定的索引不存在！ "; finished = 1; }else{ msg = "索引服务器内部错误！ "; finished = 1; } var progressPanel = document.getElementById("progressPanel"); progressPanel.innerHTML = msg; } function XMLRequest() { var req = null; if ( window.XMLHttpRequest ) { req = new XMLHttpRequest(); } else if ( window.ActiveXObject) { try { req = new ActiveXObject("Msxml2.XMLHTTP"); }catch(e){ try { req = new ActiveXObject("Microsoft.XMLHTTP"); } catch (ee) { alert("浏览器不支持异步调用，无法完成动态进度显示！ "); } } } return req; } var xmlDoc = null; function ReadyStateHandler(req, responseXmlHandler) { return function () { if ( req.readyState == 4 ) { if (req.status == 200) { // if mime-type is not text/xml, then MS IE will refuse to provide responseXML responseType = req.getResponseHeader("Content-Type"); if ( responseType != "text/xml" && navigator.appName == "Microsoft Internet Explorer" ) { if ( xmlDoc == null ) { xmlDoc=new ActiveXObject("Microsoft.XMLDOM"); xmlDoc.async="false"; } xmlDoc.loadXML(req.responseText); responseXmlHandler( xmlDoc ); }else{ responseXmlHandler(req.responseXML); } } else { var progressPanel = document.getElementById("progressPanel"); progressPanel.innerHTML = "Server Error: "+ req.status; } } } }