匯出多級資料到excel並且生成zip壓縮檔案下載
阿新 • • 發佈：2018-11-19
為了實現以下如圖的效果
首先：需要的jar包
jxl 生成excel
ant (org.apache.tools.ant) 生成zip壓縮檔案
1.建立目錄結構，最後生成壓縮包：
String realPath = request.getServletContext().getRealPath("/"); realPath = realPath + "export" + File.separator + "file" + File.separator ; System.out.println(realPath); //TODO 第一部分：地區========================================================================================================= File dq=new File(realPath, "地區"); dq.mkdirs();//建立父目錄 File province = null; File city = null; File county = null; List<BaseAreaTree> areaList=CacheBaseAreaManager.getTreeByParentCode("-1"); List<BaseAreaTree> cityList=null; List<BaseAreaTree> countyList=null; try { for (Iterator iterator = areaList.iterator(); iterator.hasNext();) { BaseAreaTree baseAreaTree = (BaseAreaTree) iterator.next(); province = new File(dq.getPath(),baseAreaTree.getNodeName()); if(!province.exists()) { province.mkdirs();//建立父目錄 } } //TODO 第二部分：學校========================================================================================================= File xx=new File(realPath, "學校"); xx.mkdirs();//建立父目錄 province = null; city = null; county = null; areaList=CacheBaseAreaManager.getTreeByParentCode("-1"); cityList=null; countyList=null; for (Iterator iterator = areaList.iterator(); iterator.hasNext();) { BaseAreaTree baseAreaTree = (BaseAreaTree) iterator.next(); province = new File(xx.getPath(),baseAreaTree.getNodeName()); if(!province.exists()) { province.mkdirs();//建立父目錄 } } //TODO 完成資料的匯出excel，生成壓縮包============================================================================================================================ //注意！：這個zip檔案需要手動生成下，file = new file(".zip")檔案是損壞的，無法識別 File zipfile = new File(request.getServletContext().getRealPath("/") + File.separator + "export" + File.separator + "file.zip"); if (!zipfile.exists()) { zipfile.createNewFile(); } //建立zip檔案 FileOutputStream fOutputStream = new FileOutputStream(zipfile); ZipOutputStream zoutput = new ZipOutputStream(fOutputStream); zoutput.close(); File srcdir = new File(request.getServletContext().getRealPath("/") + File.separator + "export" + File.separator + "file"); if (!srcdir.exists()) { System.out.println(); } Project prj = new Project(); Zip zip = new Zip(); zip.setProject(prj); zip.setDestFile(zipfile); FileSet fileSet = new FileSet(); fileSet.setProject(prj); fileSet.setDir(srcdir); //fileSet.setIncludes("**/*.java"); 包括哪些檔案或資料夾 eg:zip.setIncludes("*.java"); //fileSet.setExcludes(...); 排除哪些檔案或資料夾 zip.addFileset(fileSet); zip.execute(); } catch (Exception e) { // TODO: handle exception e.printStackTrace(); } System.out.println("==============================over=================================");
2.獲取資料並且生成excel
try { /*String templatePath=url+"excel/"+title+".xls"; downloadUrl="/excel/"+title+".xls";*/ downloadUrl= downloadUrl + File.separator + title+".xls"; File ff = new File(downloadUrl); if(!ff.exists()) { ff.createNewFile(); } //查詢baseuser的資料 List baseUserList = baseAreaManager.getBaseUserList(areaId, level, roleCode); try{ WorkbookSettings settings = new WorkbookSettings(); settings.setWriteAccess(null); WritableWorkbook wwb = Workbook.createWorkbook(ff,settings); WritableSheet wws = wwb.createSheet(title, 0); WritableFont font = new WritableFont(WritableFont.createFont("宋體"), 12, WritableFont.NO_BOLD); WritableCellFormat cellFormat = new WritableCellFormat(font,NumberFormats.TEXT); WritableFont font1 = new WritableFont(WritableFont.createFont("宋體"), 14, WritableFont.NO_BOLD); WritableCellFormat cellFormat1 = new WritableCellFormat(font1,NumberFormats.TEXT); cellFormat.setWrap(true); cellFormat.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE); cellFormat.setAlignment(jxl.format.Alignment.CENTRE); cellFormat.setBorder(Border.ALL, BorderLineStyle.THIN); cellFormat1.setWrap(true); cellFormat1.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE); cellFormat1.setAlignment(jxl.format.Alignment.CENTRE); cellFormat1.setBorder(Border.ALL, BorderLineStyle.THIN); Label label = new Label(0, 0, title, cellFormat1); wws.addCell(label); //設定Excel表頭 String[] titles=new String[]{"序號","姓名","賬號"}; for (int i = 0; i < titles.length; i++) { Label excelTitle = new Label(i, 1, titles[i], cellFormat1); wws.addCell(excelTitle); } /*for (int i = 0; i < users.size(); i++) { Object[] baseUser=(Object[])users.get(i); wws.setRowView(i+2, 270); wws.addCell(new Label(0, i + 2, "a", cellFormat)); wws.setColumnView(0, 18); wws.addCell(new Label(1, i + 2, "b", cellFormat)); wws.setColumnView(1, 18); }*/ Map<String,Object> map = new HashMap<String, Object>(); for (int i = 0; i < baseUserList.size(); i++) { map = (Map<String, Object>) baseUserList.get(i); wws.setRowView(i+2, 270); wws.addCell(new Label(0, i + 2, String.valueOf(i+1), cellFormat)); wws.setColumnView(0, 18); wws.addCell(new Label(1, i + 2, (String) map.get("REALNAME"), cellFormat)); wws.setColumnView(1, 18); wws.addCell(new Label(2, i + 2, (String) map.get("LOGIN_NAME"), cellFormat)); wws.setColumnView(2, 18); } wws.mergeCells( 0 , 0 , 2 , 0 ); wwb.write(); wwb.close(); } catch (Exception e) { e.printStackTrace(); } }catch (java.io.IOException e) { e.printStackTrace(); }
3.下載檔案：
try { response.setContentType("text/html;charset=UTF-8"); request.setCharacterEncoding("UTF-8"); BufferedInputStream bis = null; BufferedOutputStream bos = null; String downLoadPath = request.getServletContext().getRealPath("/") + File.separator + "export" + File.separator + "file.zip"; long fileLength = new File(downLoadPath).length(); response.setContentType("application/octet-stream"); response.setHeader("Content-disposition", "attachment; filename=" + new String("賬號.zip".getBytes("utf-8"), "ISO8859-1")); response.setHeader("Content-Length", String.valueOf(fileLength)); bis = new BufferedInputStream(new FileInputStream(downLoadPath)); bos = new BufferedOutputStream(response.getOutputStream()); byte[] buff = new byte[2048]; int bytesRead; while (-1 != (bytesRead = bis.read(buff, 0, buff.length))) { bos.write(buff, 0, bytesRead); } bis.close(); bos.close(); } catch (Exception e) { // TODO: handle exception }
其中，注意：
1.因為windows和linux平臺的不同，\或者/儘量使用 File.separator 代替
2.不知為何生成.zip檔案使用File file = new File("a.zip")生成的檔案是錯誤的，可以先手動生成一個
具體程式碼：
/**
* 生成每個地區的樹狀路徑，並且生成zip檔案
*/
public String exportArea(){
String realPath = request.getServletContext().getRealPath("/");
realPath = realPath + "export" + File.separator + "file" + File.separator ;
System.out.println(realPath);
//TODO 第一部分：地區=========================================================================================================
File dq=new File(realPath, "地區");
dq.mkdirs();//建立父目錄
File province = null;
File city = null;
File county = null;
List<BaseAreaTree> areaList=CacheBaseAreaManager.getTreeByParentCode("-1");
List<BaseAreaTree> cityList=null;
List<BaseAreaTree> countyList=null;
try {
for (Iterator iterator = areaList.iterator(); iterator.hasNext();) {
BaseAreaTree baseAreaTree = (BaseAreaTree) iterator.next();
province = new File(dq.getPath(),baseAreaTree.getNodeName());
if(!province.exists()) {
province.mkdirs();//建立父目錄
}
if(baseAreaTree.getNodeCode().length() == 3){
//if("北京市".equals(baseAreaTree.getNodeName())){
//說明是省
//TODO 建立管理員
exportBaseUser(baseAreaTree.getNodeName()+"管理員", province.getPath(), "role.areaManager",baseAreaTree.getId(),1);
exportBaseUser(baseAreaTree.getNodeName()+"稽核員", province.getPath(), "role.areaAuditor",baseAreaTree.getId(),1);
exportBaseUser(baseAreaTree.getNodeName()+"視察員", province.getPath(), "role.areaObserve",baseAreaTree.getId(),1);
cityList = CacheBaseAreaManager.getTreeByParentCode(baseAreaTree.getNodeCode());
for (Iterator iterator2 = cityList.iterator(); iterator2
.hasNext();) {
BaseAreaTree baseAreaTree2 = (BaseAreaTree) iterator2.next();
city = new File(province.getPath(),baseAreaTree2.getNodeName());
if(!city.exists()) {
city.mkdirs();//建立父目錄
}
if(baseAreaTree2 != null && baseAreaTree2.getNodeCode().length() == 6){
//說明是市
//TODO 建立管理員
exportBaseUser(baseAreaTree2.getNodeName()+"管理員", city.getPath(), "role.areaManager",baseAreaTree2.getId(),2);
exportBaseUser(baseAreaTree2.getNodeName()+"稽核員", city.getPath(), "role.areaAuditor",baseAreaTree2.getId(),2);
exportBaseUser(baseAreaTree2.getNodeName()+"視察員", city.getPath(), "role.areaObserve",baseAreaTree2.getId(),2);
countyList = CacheBaseAreaManager.getTreeByParentCode(baseAreaTree2.getNodeCode());
if(countyList != null && countyList.size() > 0){
for (Iterator iterator3 = countyList.iterator(); iterator3
.hasNext();) {
BaseAreaTree baseAreaTree3 = (BaseAreaTree) iterator3.next();
county = new File(city.getPath(),baseAreaTree3.getNodeName());
county.mkdirs();//建立縣一級
if(!county.exists()) {
county.mkdirs();//建立父目錄
}
//TODO 建立管理員
exportBaseUser(baseAreaTree3.getNodeName()+"管理員", county.getPath(), "role.areaManager",baseAreaTree3.getId(),3);
exportBaseUser(baseAreaTree3.getNodeName()+"稽核員", county.getPath(), "role.areaAuditor",baseAreaTree3.getId(),3);
exportBaseUser(baseAreaTree3.getNodeName()+"視察員", county.getPath(), "role.areaObserve",baseAreaTree3.getId(),3);
}
}
}
}
}
//}//////
}
//TODO 第二部分：學校=========================================================================================================
File xx=new File(realPath, "學校");
xx.mkdirs();//建立父目錄
province = null;
city = null;
county = null;
areaList=CacheBaseAreaManager.getTreeByParentCode("-1");
cityList=null;
countyList=null;
for (Iterator iterator = areaList.iterator(); iterator.hasNext();) {
BaseAreaTree baseAreaTree = (BaseAreaTree) iterator.next();
province = new File(xx.getPath(),baseAreaTree.getNodeName());
if(!province.exists()) {
province.mkdirs();//建立父目錄
}
if(baseAreaTree.getNodeCode().length() == 3){
//if("北京市".equals(baseAreaTree.getNodeName())){
//說明是省
//TODO 建立管理員
exportBaseUser(baseAreaTree.getNodeName()+"管理員", province.getPath(), "role.schoolManager",baseAreaTree.getId(),1);
cityList = CacheBaseAreaManager.getTreeByParentCode(baseAreaTree.getNodeCode());
for (Iterator iterator2 = cityList.iterator(); iterator2
.hasNext();) {
BaseAreaTree baseAreaTree2 = (BaseAreaTree) iterator2.next();
city = new File(province.getPath(),baseAreaTree2.getNodeName());
if(!city.exists()) {
city.mkdirs();//建立父目錄
}
if(baseAreaTree2 != null && baseAreaTree2.getNodeCode().length() == 6){
//說明是市
//TODO 建立管理員
exportBaseUser(baseAreaTree2.getNodeName()+"管理員", city.getPath(), "role.schoolManager",baseAreaTree2.getId(),2);
countyList = CacheBaseAreaManager.getTreeByParentCode(baseAreaTree2.getNodeCode());
if(countyList != null && countyList.size() > 0){
for (Iterator iterator3 = countyList.iterator(); iterator3
.hasNext();) {
BaseAreaTree baseAreaTree3 = (BaseAreaTree) iterator3.next();
county = new File(city.getPath(),baseAreaTree3.getNodeName());
county.mkdirs();//建立縣一級
if(!county.exists()) {
county.mkdirs();//建立父目錄
}
//TODO 建立管理員
exportBaseUser(baseAreaTree3.getNodeName()+"管理員", county.getPath(), "role.schoolManager",baseAreaTree3.getId(),3);
}
}
}
}
}
//}//
}
//TODO 完成資料的匯出excel，生成壓縮包============================================================================================================================
//注意！：這個zip檔案需要手動生成下，file = new file(".zip")檔案是損壞的，無法識別
File zipfile = new File(request.getServletContext().getRealPath("/") + File.separator + "export" + File.separator + "file.zip");
if (!zipfile.exists()) {
zipfile.createNewFile();
}
//建立zip檔案
FileOutputStream fOutputStream = new FileOutputStream(zipfile);
ZipOutputStream zoutput = new ZipOutputStream(fOutputStream);
zoutput.close();
File srcdir = new File(request.getServletContext().getRealPath("/") + File.separator + "export" + File.separator + "file");
if (!srcdir.exists()) {
System.out.println();
}
Project prj = new Project();
Zip zip = new Zip();
zip.setProject(prj);
zip.setDestFile(zipfile);
FileSet fileSet = new FileSet();
fileSet.setProject(prj);
fileSet.setDir(srcdir);
//fileSet.setIncludes("**/*.java"); 包括哪些檔案或資料夾 eg:zip.setIncludes("*.java");
//fileSet.setExcludes(...); 排除哪些檔案或資料夾
zip.addFileset(fileSet);
zip.execute();
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
System.out.println("==============================over=================================");
//下載zip檔案
fileDownBaseUser();
return null;
}
/**
* 資料寫入excel
* @param title
* @param downloadUrl
* @param roleCode
* @param areaId
* @param level
*/
public void exportBaseUser(String title,String downloadUrl,String roleCode,String areaId,Integer level){
try {
/*String templatePath=url+"excel/"+title+".xls";
downloadUrl="/excel/"+title+".xls";*/
downloadUrl= downloadUrl + File.separator + title+".xls";
File ff = new File(downloadUrl);
if(!ff.exists()) {
ff.createNewFile();
}
//查詢baseuser的資料
List baseUserList = baseAreaManager.getBaseUserList(areaId, level, roleCode);
try{
WorkbookSettings settings = new WorkbookSettings();
settings.setWriteAccess(null);
WritableWorkbook wwb = Workbook.createWorkbook(ff,settings);
WritableSheet wws = wwb.createSheet(title, 0);
WritableFont font = new WritableFont(WritableFont.createFont("宋體"), 12,
WritableFont.NO_BOLD);
WritableCellFormat cellFormat = new WritableCellFormat(font,NumberFormats.TEXT);
WritableFont font1 = new WritableFont(WritableFont.createFont("宋體"), 14,
WritableFont.NO_BOLD);
WritableCellFormat cellFormat1 = new WritableCellFormat(font1,NumberFormats.TEXT);
cellFormat.setWrap(true);
cellFormat.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);
cellFormat.setAlignment(jxl.format.Alignment.CENTRE);
cellFormat.setBorder(Border.ALL, BorderLineStyle.THIN);
cellFormat1.setWrap(true);
cellFormat1.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);
cellFormat1.setAlignment(jxl.format.Alignment.CENTRE);
cellFormat1.setBorder(Border.ALL, BorderLineStyle.THIN);
Label label = new Label(0, 0, title, cellFormat1);
wws.addCell(label);
//設定Excel表頭
String[] titles=new String[]{"序號","姓名","賬號"};
for (int i = 0; i < titles.length; i++) {
Label excelTitle = new Label(i, 1, titles[i], cellFormat1);
wws.addCell(excelTitle);
}
/*for (int i = 0; i < users.size(); i++) {
Object[] baseUser=(Object[])users.get(i);
wws.setRowView(i+2, 270);
wws.addCell(new Label(0, i + 2, "a", cellFormat));
wws.setColumnView(0, 18);
wws.addCell(new Label(1, i + 2, "b", cellFormat));
wws.setColumnView(1, 18);
}*/
Map<String,Object> map = new HashMap<String, Object>();
for (int i = 0; i < baseUserList.size(); i++) {
map = (Map<String, Object>) baseUserList.get(i);
wws.setRowView(i+2, 270);
wws.addCell(new Label(0, i + 2, String.valueOf(i+1), cellFormat));
wws.setColumnView(0, 18);
wws.addCell(new Label(1, i + 2, (String) map.get("REALNAME"), cellFormat));
wws.setColumnView(1, 18);
wws.addCell(new Label(2, i + 2, (String) map.get("LOGIN_NAME"), cellFormat));
wws.setColumnView(2, 18);
}
wws.mergeCells( 0 , 0 , 2 , 0 );
wwb.write();
wwb.close();
} catch (Exception e) {
e.printStackTrace();
}
}catch (java.io.IOException e) {
e.printStackTrace();
}
}
/**
* 檔案的下載
*/
public void fileDownBaseUser(){
try {
response.setContentType("text/html;charset=UTF-8");
request.setCharacterEncoding("UTF-8");
BufferedInputStream bis = null;
BufferedOutputStream bos = null;
String downLoadPath = request.getServletContext().getRealPath("/") + File.separator + "export" + File.separator + "file.zip";
long fileLength = new File(downLoadPath).length();
response.setContentType("application/octet-stream");
response.setHeader("Content-disposition", "attachment; filename="
+ new String("賬號.zip".getBytes("utf-8"), "ISO8859-1"));
response.setHeader("Content-Length", String.valueOf(fileLength));
bis = new BufferedInputStream(new FileInputStream(downLoadPath));
bos = new BufferedOutputStream(response.getOutputStream());
byte[] buff = new byte[2048];
int bytesRead;
while (-1 != (bytesRead = bis.read(buff, 0, buff.length))) {
bos.write(buff, 0, bytesRead);
}
bis.close();
bos.close();
} catch (Exception e) {
// TODO: handle exception
}
}