java文件下载至linux乱码,JAVA 文件下载乱码问题解决办法
頁面設置隱藏的iframe
頁面下載按鈕
id="btnDown" href="javascript:void(download('btnDown'))" >下載模板
頁面JS腳本
function download(id){
$("#reqFrame").attr("src",encodeURI("/servlet/Common?action=downloadByPath&filePath="+$("#"+id).attr("title")));
}
后臺servlet方法
public class SV_Common extends HttpServlet {
/**
*
*/
private static final long serialVersionUID = 1L;
public static final Logger logger = Logger.getLogger(SV_Common.class
.getName());
protected void service(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
String action = request.getParameter("action");
try {
if ("downloadByPath".equals(action)) { //下載指定路徑的文件
downloadByPath(request, response);
} else {
throw new IllegalArgumentException("沒有相匹配的操作類型，請檢查opp變量.");
}
} catch (Exception ex) {
ex.printStackTrace();
}
}
private void downloadByPath(HttpServletRequest request,
HttpServletResponse response) throws IOException, ServletException {
String filePath = request.getParameter("filePath");
logger.info("filePath="+filePath);
String fileFullName = filePath.substring(filePath.lastIndexOf("/") + 1);
response.reset();
if (request.getHeader("User-Agent").toLowerCase().indexOf("firefox") > 0) {
logger.info("User-Agent=firefox");
response.setHeader(
"Content-Disposition",
"attachment;filename=" + new String(fileFullName.getBytes("UTF-8"), "ISO8859-1")
);
} else {
logger.info("User-Agent=not firefox");
response.setHeader(
"Content-Disposition",
"attachment;filename=" + URLEncoder.encode(fileFullName, "UTF-8")
);
}
File file = new File(PathUtil.getPath("") + "/" + filePath);
response.setContentType(new MimetypesFileTypeMap().getContentType(file));
OutputStream out = response.getOutputStream();
BufferedInputStream in = null;
byte[] buffer = new byte[8192];
int length;
try
{
in = new BufferedInputStream(
new FileInputStream(file),8192
);
while ( (length = in.read(buffer)) != -1)
{
out.write(buffer, 0 ,length);
}
}
catch (IOException ex)
{
ex.printStackTrace();
}
finally
{
if (out != null)
{
try {out.close();}
catch (IOException ex) {}
out = null;
}
if (in != null)
{
try {in.close();}
catch (IOException ex) {}
in = null;
}
}
response.flushBuffer();
};
}
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