需要配置web.xml来通过跳过登陆验证
package com.whir.rd.service;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.log4j.Logger;
import com.whir.common.path.SystemPath;
import com.whir.component.config.ConfigXMLReader;
public class DownSWLoadServelt extends HttpServlet {
private static Logger logger = Logger.getLogger(DownSWLoadServelt.class
.getName());
private static final ConfigXMLReader reader = new ConfigXMLReader();
/**
* Constructor of the object.
*/
public DownSWLoadServelt() {
super();
}
/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
/**
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
*
* @param request
* the request send by the client to the server
* @param response
* the response send by the server to the client
* @throws ServletException
* if an error occurred
* @throws IOException
* if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String downloadFile;
String FileName = request.getParameter("FileName");
if ((FileName.startsWith("/")) || (FileName.startsWith("./")) || (FileName.startsWith("../"))) {
return;
}
if(FileName==""||FileName.length()<=0){
return;
}
String ggpath=SystemPath.getRootFilePath() + File.separator + "upload" + File.separator;
String yearmonth=FileName.substring(0, 6);
String newPdfPaths = ggpath+"tempfile/temppdf/" + yearmonth + "/";
String srcFile = newPdfPaths +FileName;
System.out.println("开始复制文件srcFile"+srcFile);
/* http://222.65.225.7:18080/defaultroot/DownloadServlet?path=govdocumentm"
+ "anager&encrypt=1&name=Image_00001.pdf&FileName=2019122509302615973192955.pdf
String isEncrypt = "1";
String mimeType ="application/pdf";
*/
/* OutputStream out = null;
response.setCharacterEncoding("utf-8");
response.setContentType("multipart/form-data");
response.setHeader("Content-Disposition", "99999999.pdf");
writeBytes(srcFile, response.getOutputStream());
File file = new File(srcFile);
if (file.exists()) {
//你的文件所存放的地址 我这边放在e盘下
DataOutputStream temps = new DataOutputStream(response.getOutputStream());
DataInputStream in = new DataInputStream(new FileInputStream(srcFile));
byte[] b = new byte[2048];
while ((in.read(b)) != -1) {
temps.write(b);
temps.flush();
}
in.close();
temps.close();
} else {
System.out.println("文件不存在");
}
*/
//获取服务器文件
File file = new File(srcFile);
InputStream ins = new FileInputStream(file);
/* 设置文件ContentType类型，这样设置，会自动判断下载文件类型 */
response.setContentType("multipart/form-data");
/* 设置文件头：最后一个参数是设置下载文件名 */
response.setHeader("Content-Disposition", "attachment;filename="+file.getName());
try{
OutputStream os = response.getOutputStream();
byte[] b = new byte[1024];
int len;
while((len = ins.read(b)) > 0){
os.write(b,0,len);
}
os.flush();
os.close();
ins.close();
}catch (IOException ioe){
ioe.printStackTrace();
}
/* response.reset();
response.setContentType(mimeType);
response.setHeader("Content-Disposition", "attachment; filename=" + FileName);
response.setContentLength((int)file.length());
in = new BufferedInputStream(new FileInputStream(file));
out = new BufferedOutputStream(response.getOutputStream());
byte[] buf = new byte[8192];
int n = -1;
if ("1".equals(isEncrypt))
while (-1 != (n = in.read(buf, 0, buf.length))) {
for (int i0 = 0; i0 < n; ++i0) {
buf[i0] = (byte)(buf[i0] + 1);
}
out.write(buf, 0, n);
}
else {
do
out.write(buf, 0, n);
while (-1 != (n = in.read(buf, 0, buf.length)));
}
out.flush();
}
catch (IOException e) {
e.printStackTrace();
} catch (Exception e) {
throw new ServletException("Download failed", e);
} finally {
try {
if (in != null)
in.close();
}
catch (Exception localException7) {
}
try {
if (out != null)
out.close();
} catch (Exception localException8)
{
} */
}
/**
* 输出指定文件的byte数组
*
* @param filePath 文件路径
* @param os 输出流
* @return
*/
public static void writeBytes(String filePath, OutputStream os) throws IOException
{
FileInputStream fis = null;
try
{
File file = new File(filePath);
if (!file.exists())
{
throw new FileNotFoundException(filePath);
}
fis = new FileInputStream(file);
byte[] b = new byte[1024];
int length;
while ((length = fis.read(b)) > 0)
{
os.write(b, 0, length);
}
}
catch (IOException e)
{
throw e;
}
finally
{
if (os != null)
{
try
{
os.close();
}
catch (IOException e1)
{
e1.printStackTrace();
}
}
if (fis != null)
{
try
{
fis.close();
}
catch (IOException e1)
{
e1.printStackTrace();
}
}
}
}
/**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to
* post.
*
* @param request
* the request send by the client to the server
* @param response
* the response send by the server to the client
* @throws ServletException
* if an error occurred
* @throws IOException
* if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doGet(request, response);
}
/**
* Initialization of the servlet. <br>
*
* @throws ServletException
* if an error occurs
*/
public void init() throws ServletException {
// Put your code here
}
public void printResult(HttpServletResponse response, String content) {
printResult(response, content, "null");
}
public void printResult(HttpServletResponse response, String content,
String dataJson) {
String result = dataJson;
//System.out.println("result:" + result);
try {
PrintWriter pw = response.getWriter();
pw.print(result);
pw.close();
} catch (IOException e) {
e.printStackTrace();
System.out
.println("[BaseActionSupport][method=printResult]异常:" + e);
}
}
}