java download

来源：互联网发布：libevent源码解析编辑：程序博客网时间：2024/06/05 00:09

public String exportTemplete(final TempleteParamDto dto,

final List<XlsTempleteConfig> templeteConfig) throws IOException {

final String excelFileType = "xls";

final String fileName = dto.getFileName();

final Workbook wb;

final String filePath = dto.getFilePath();

if (StringUtil.isNotEmptyString(filePath)) {

wb = new HSSFWorkbook(ProcessorFactory.class.getClassLoader().getResourceAsStream(dto.getFilePath()));

}else{

wb = ImportXlsFactory.getWorkbook(excelFileType);

writeHeader(wb, templeteConfig);

}

final String userName = DataBusFactory.getDataBus().getLogonInfo()

.getUserName();

String fPath;

FileOutputStream fout = null;

try {

final File f = ImportXlsFactory.createTempFile(userName, excelFileType, filePath);

fout = new FileOutputStream(f);

wb.write(fout);

fPath = (new StringBuilder("/aaa/menu/DownLoadServlet.do?uri=")).append(

URLEncoder.encode(f.getPath(), "UTF-8"))

.toString();

if (!StringUtil.isEmptyString(fileName)) {

fPath += "&fileName=" + fileName + "." + excelFileType;

}

return fPath;

} catch (final Exception e) {

e.printStackTrace();

throw new FmisRuntimeException(e);

} finally {

try {

if (null != fout) {

fout.close();

}

} catch (final IOException e) {

e.printStackTrace();

}

/**
* TODO 在此写上类的相关说明.<br>
*/

public class DownLoadServlet extends HttpServlet {

@Override

protected void doPost(final HttpServletRequest req, final HttpServletResponse resp) throws ServletException,

IOException {

// super.doPost(req, resp);

req.setCharacterEncoding("UTF-8");

resp.setCharacterEncoding("UTF-8");

final String uri = req.getParameter("uri");

if (StringUtil.isEmptyString(uri)) {

resp.flushBuffer();

return;

}

String fileName = req.getParameter("fileName");

if (StringUtil.isEmptyString(fileName)) {

int index = uri.lastIndexOf("/");

if (index == -1) {

index = uri.lastIndexOf("\\");

}

fileName = uri.substring(index + 1);

fileName = new String(fileName.getBytes(), "ISO-8859-1");

}

resp.setHeader("Content-Disposition", "attachment; filename=" + fileName);

FileInputStream is = null;

ServletOutputStream os = null;

try {

is = new FileInputStream(uri);

os = resp.getOutputStream();

final byte buffer[] = new byte[1024];

int c;

while ((c = is.read(buffer)) > 0) {

os.write(buffer, 0, c);

}

resp.flushBuffer();

} catch (final Exception e) {

e.printStackTrace();

} finally {

if (null != is) {

is.close();

}

if (null != os) {

os.close();

}

@Override

protected void doGet(final HttpServletRequest req, final HttpServletResponse resp) throws ServletException,

IOException {

doPost(req, resp);

}

loadTemplete : function() {

if(outerApi.filePath&&(outerApi.filePath+"").charAt(0)=="/"){

x_window.location= outerApi.filePath;

return ;

}

interact.exportTemplete({

p0 : $.toJSON({

filePath : outerApi.filePath||"",

fileName:outerApi.fileName||""

}),

p1 : $.toJSON(outerApi.cms)

}, function(api) {

if (api.error) {

messageUtils.alert(api.context);

return;

}

//"/aaa/menu/DownLoadServlet.do?uri=C%3A%5CDocuments+and+Settings%5Cwangli3%5CjqGridExcel%5Cxjx%5C1378948899665.xls&fileName=导入模板.xls"

x_window.location= api.context;

});