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Doug Lea關于util.concurrent并發工具包的講座(3)

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1.?re: createNativeQuery原生－命名查詢[未登錄]
query.getResultList(）這個返回的值用什么實體類接受呢？
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版主，如果利用entityManager進行查詢，如何在sql里邊傳參，防注入的那種
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文件下載

?1

package ?com.stt.doss.common.util.upload;
?2

?3

import ?java.io.BufferedOutputStream;
?4

import ?java.io.FileInputStream;
?5

import ?java.io.FileNotFoundException;
?6

import ?java.io.IOException;
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import ?java.io.UnsupportedEncodingException;
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import ?javax.servlet.http.HttpServletResponse;
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import ?com.stt.doss.util.Convertor;
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/**
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?*?
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?*?Title:
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?*?
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?*?
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?*?Description:處理下載文件工具類
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?*?
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?*?
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?*?Copyright:?Copyright?(c)?2006
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?*?
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?*?
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?*?Company:?stt
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?*?
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?*?
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?*? @author ?william
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?*? @version ?1.0
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? */
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public ? class ?DownloadHelper? {
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???? /**
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?????*?下載文件
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?????*?
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?????*? @param ?response
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?????*? @param ?fileName
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?????*? @param ?filePath
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????? */
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???? public ? static ? void ?downloadFile(HttpServletResponse?response,?String?fileName,
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????????????String?fileAllPath)? {
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????????StringBuffer?sb? = ? new ?StringBuffer( 150 );
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????????sb.append( " attachment;??filename= " );
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????????sb.append(Convertor.iso2gbk(fileName));
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???????? if ?( null ? != ?fileAllPath? && ?fileName? != ? null )? {
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????????????FileInputStream?fis? = ? null ;
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????????????BufferedOutputStream?bos? = ? null ;
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???????????? try ? {
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????????????????response
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????????????????????????.setContentType( " application/x-msdownload;charset=GB2312 " );
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????????????????response.setHeader( " Content-Disposition " ,? new ?String(sb
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????????????????????????.toString().getBytes(),? " ISO-8859-1 " ));
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????????????????fis? = ? new ?FileInputStream(Convertor.iso2gbk(fileAllPath));
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????????????????bos? = ? new ?BufferedOutputStream(response.getOutputStream());
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???????????????? byte []?buffer? = ? new ? byte [ 2048 ];
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???????????????? while ?(fis.read(buffer)? != ? - 1 )? {
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????????????????????bos.write(buffer);
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????????????????}
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????????????????bos.write(buffer,? 0 ,?buffer.length);
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???????????????? // ?fis.close();
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???????????????? // ?bos.close();
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????????????} ? catch ?(UnsupportedEncodingException?e)? {
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???????????????? // ?TODO?Auto-generated?catch?block
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????????????????e.printStackTrace();
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???????????????? throw ? new ?RuntimeException();
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????????????} ? catch ?(FileNotFoundException?e)? {
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???????????????? // ?TODO?Auto-generated?catch?block
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????????????????e.printStackTrace();
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???????????????? throw ? new ?RuntimeException();
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????????????} ? catch ?(IOException?e)? {
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???????????????? // ?TODO?Auto-generated?catch?block
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????????????????e.printStackTrace();
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???????????????? throw ? new ?RuntimeException();
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????????????} ? finally ? {
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???????????????? try ? {
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???????????????????? if ?(fis? != ? null )? {
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????????????????????????fis.close();
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????????????????????}
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???????????????????? if ?(bos? != ? null )? {
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????????????????????????bos.close();
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????????????????????}
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????????????????} ? catch ?(IOException?e)? {
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???????????????????? // ?TODO?Auto-generated?catch?block
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????????????????????e.printStackTrace();
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???????????????????? throw ? new ?RuntimeException();
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????????????????}
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????????????}
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????????}
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????}
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}
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posted on 2007-03-16 15:26 張金鵬閱讀(198) 評論(0) 編輯收藏所屬分類: core java中的一些數據結構的處理

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