ajax上傳excel後讀出內容並無重新整理返回頁面
頁面程式碼
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
<link type="text/css" href="css/ui-lightness/jquery-ui-1.8.20.custom.css" rel="stylesheet" />
<script type="text/javascript" src="js/jquery-1.7.2.min.js"></script>
<script type="text/javascript" src="js/jquery-ui-1.8.20.custom.min.js"></script>
<script type="text/javascript" src="js/json.js"></script>
<script type="text/javascript">
//這裡被呼叫的回撥函式，並負責將返回來的資料全部填充到頁面上
function backCallUpload(ArryStr){
var dataTable=document.getElementById("dataTable");
var str;
str="<tr><td><input type='checkbox'></td></tr><tr><td>";
if(ArryStr&&ArryStr.length&&ArryStr.length>0){
for(var i=0;i<ArryStr.length;i++){
var tempObj=ArryStr[i];
str+=tempObj.name;
var newRow = dataTable.insertRow();
var oCell = newRow.insertCell();
oCell.innerHTML = "<input type='checkbox' name='t1'>";
var oCell1 = newRow.insertCell();
oCell1.innerHTML = tempObj.name;
str+="</td></tr>";
if(i!=ArryStr.length-1){
str+="<tr><td><input type='checkbox'></td></tr><tr><td>";
}
//TODO: implent add those value.
}
}
}
function createTr(){
var trOjb=document.createElement("tr");
return trOjb;
}
function createTd(){
var tdOjb=document.createElement("td");
return tdOjb;
}
function createInput(){
var inputOjb=document.createElement("input");
return inputOjb;
}
</script>
</head>
<body>
<h1>subm匯入Excel</h1>
<hr>
<form action="importExcel" method="post" enctype="multipart/form-data" target="hidden_frame">
<input type="file" name="importExcel" id="importExcel">
<input type="submit" value="匯入" id='submit'>
<br/>
<table id='dataTable' border='1'>
<tr>
<th><input type="checkbox"></th>
<th>Name</th>
</tr>
<tr>
<td><input type="checkbox"></td>
<td>ansel</td>
</tr>
</table>
<iframe name='hidden_frame' id="hidden_frame" src="MyJsp.jsp" style='display:none'></iframe>
</body>
</html>
package com.test;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.Iterator;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import com.url.ajax.json.JSONArray;
import com.url.ajax.json.JSONObject;
public class PoiReadXls2 extends HttpServlet {
File tempPathFile;
// 預設路徑
String uploadTo = "D:\\";
// 支援的檔案型別
String[] errorType = { ".xls" };
// 格式化日期
SimpleDateFormat format = new SimpleDateFormat("yyyyMMddHHmmssSSS");
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
// TODO Auto-generated method stub
req.setCharacterEncoding("utf-8");
resp.setCharacterEncoding("utf-8");
// 取得伺服器真實路徑
uploadTo = req.getSession().getServletContext().getRealPath("\\")
+ "upload\\";
DiskFileItemFactory factory = new DiskFileItemFactory();
// 設定緩衝區大小，這裡是4kb
factory.setSizeThreshold(4096);
// 設定緩衝區目錄
factory.setRepository(tempPathFile);
// Create a new file upload handler
ServletFileUpload upload = new ServletFileUpload(factory);
// Set overall request size constraint
// 設定最大檔案尺寸，這裡是4MB
upload.setSizeMax(4 * 1024 * 1024);
// 開始讀取上傳資訊
List fileItems = new ArrayList();
try {
fileItems = upload.parseRequest(req);
} catch (FileUploadException e1) {
e1.printStackTrace();
}
// 依次處理每個上傳的檔案
Iterator iter = fileItems.iterator();
System.out.println("fileItems的大小是" + fileItems.size());
// 正則匹配，過濾路徑取檔名
String regExp = ".+\\\\(.+)$";
Pattern p = Pattern.compile(regExp);
while (iter.hasNext()) {
FileItem item = (FileItem) iter.next();
// 忽略其他不是檔案域的所有表單資訊
System.out.println("正在處理" + item.getFieldName());
if (!item.isFormField()) {
String name = item.getName();
long size = item.getSize();
if ((name == null || name.equals("")) && size == 0)
continue;
Matcher m = p.matcher(name);
boolean result = m.find();
if (result) {
boolean flag = false;
for (int temp = 0; temp < errorType.length; temp++) {
if (m.group(1).endsWith(errorType[temp])) {
flag = true;
}
}
if (!flag) {
System.out.println("上傳了不支援的檔案型別");
throw new IOException(name + ": wrong type");
}
try {
String fileName = uploadTo + format.format(new Date())
+ m.group(1).substring(m.group(1).indexOf("."));
item.write(new File(fileName));
File f = new File(fileName);
try {
FileInputStream is = new FileInputStream(f);
HSSFWorkbook wbs = new HSSFWorkbook(is);
HSSFSheet childSheet = wbs.getSheetAt(0);
// System.out.println(childSheet.getPhysicalNumberOfRows());
System.out.println("有行數" + (childSheet.getLastRowNum()+1));
JSONObject json = new JSONObject();
JSONArray members = new JSONArray();
String transferValue="[";
for (int j = 0; j < childSheet.getLastRowNum()+1; j++) {
HSSFRow row = childSheet.getRow(j);
// System.out.println(row.getPhysicalNumberOfCells());
// System.out.println("有列數" + row.getLastCellNum());
if (null != row) {
for (int k = 0; k < row.getLastCellNum(); k++) {
HSSFCell cell = row.getCell((short) k);
if (null != cell) {
switch (cell.getCellType()) {
case HSSFCell.CELL_TYPE_NUMERIC: // 數字
System.out.print(cell.getNumericCellValue()
+ " ");
break;
case HSSFCell.CELL_TYPE_STRING: // 字串
System.out.print(cell.getStringCellValue()
+ " ");
JSONObject member = new JSONObject()
.put("name", cell.getStringCellValue());
members.put(j, member);
transferValue+="{name:'"+cell.getStringCellValue()+"'}";
if(j!=childSheet.getLastRowNum())
{
transferValue+=",";
}
break;
case HSSFCell.CELL_TYPE_BOOLEAN: // Boolean
System.out.println(cell.getBooleanCellValue()
+ " ");
break;
case HSSFCell.CELL_TYPE_FORMULA: // 公式
System.out.print(cell.getCellFormula() + " ");
break;
case HSSFCell.CELL_TYPE_BLANK: // 空值
System.out.println(" ");
break;
case HSSFCell.CELL_TYPE_ERROR: // 故障
System.out.println(" ");
break;
default:
System.out.print("未知型別 ");
break;
}
} else {
System.out.print("- ");
}
}
}
System.out.println();
}
// json.put("names", members);
// System.out.println(json.toString());
// resp.getWriter().print(json);
transferValue+="]";
//這個地方尤為重要，呼叫頁面上的回撥函式
String processParentFunctionStr="parent.backCallUpload("+transferValue+")";
PrintWriter writer=resp.getWriter();
resp.setContentType("text/html");
resp.setCharacterEncoding("utf-8");
System.out.println("<script>"+processParentFunctionStr+"</script>");
writer.write("<script>"+processParentFunctionStr+"</script>");
} catch (Exception e) {
e.printStackTrace();
}
System.out.println(name + "\t\t" + size);
} catch (Exception e) {
e.printStackTrace();
}
}
} else {
// 這裡新增對不是上傳檔案表單項的處理
System.out.println("這是一個表單項");
}
}
}
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
// TODO Auto-generated method stub
}
@Override
protected void doHead(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
// TODO Auto-generated method stub
super.doHead(req, resp);
}
public static void main(String[] args) {
File f = new File("D:\\myfile1.xls");
try {
FileInputStream is = new FileInputStream(f);
HSSFWorkbook wbs = new HSSFWorkbook(is);
HSSFSheet childSheet = wbs.getSheetAt(0);
// System.out.println(childSheet.getPhysicalNumberOfRows());
System.out.println("有行數" + (childSheet.getLastRowNum()+1));
for (int j = 0; j < childSheet.getLastRowNum()+1; j++) {
HSSFRow row = childSheet.getRow(j);
// System.out.println(row.getPhysicalNumberOfCells());
// System.out.println("有列數" + row.getLastCellNum());
if (null != row) {
for (int k = 0; k < row.getLastCellNum(); k++) {
HSSFCell cell = row.getCell((short) k);
if (null != cell) {
switch (cell.getCellType()) {
case HSSFCell.CELL_TYPE_NUMERIC: // 數字
System.out.print(cell.getNumericCellValue()
+ " ");
break;
case HSSFCell.CELL_TYPE_STRING: // 字串
System.out.print(cell.getStringCellValue()
+ " ");
break;
case HSSFCell.CELL_TYPE_BOOLEAN: // Boolean
System.out.println(cell.getBooleanCellValue()
+ " ");
break;
case HSSFCell.CELL_TYPE_FORMULA: // 公式
System.out.print(cell.getCellFormula() + " ");
break;
case HSSFCell.CELL_TYPE_BLANK: // 空值
System.out.println(" ");
break;
case HSSFCell.CELL_TYPE_ERROR: // 故障
System.out.println(" ");
break;
default:
System.out.print("未知型別 ");
break;
}
} else {
System.out.print("- ");
}
}
}
System.out.println();
}
} catch (Exception e) {
e.printStackTrace();
}
}
}