java获得上传文件的路径
发布网友
发布时间：2022-05-16 07:28
共2个回答
热心网友
时间：2023-10-15 05:44
common-fileupload组件是apache的一个开源项目之一，可以从http://jakarta.apache.org/commons/fileupload/下载。
该组件简单易用，可实现一次上传一个或多个文件，并可*文件大小。
下载后解压zip包，将commons-fileupload.jar,和commons-io里面后缀为jar复制到你的项目的webapp\WEB-INF\lib\下，如果目录不存在请自建目录。
这个项目是用来上传文件，文件路径为workspace\项目名称\build\weboutput\file\项目下，如果没有该文件夹请创建一个。否则会发生找不到路径的情况
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Iterator;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileItemFactory;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
/**
* Servlet implementation class FileUpload
*/
public class FileUpload extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public FileUpload() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
//判断提交过来的表单是否为文件上传菜单
boolean isMultipart= ServletFileUpload.isMultipartContent(request);
if(isMultipart){
//构造一个文件上传处理对象
FileItemFactory factory = new DiskFileItemFactory();
ServletFileUpload upload = new ServletFileUpload(factory);
Iterator items;
try{
//解析表单中提交的所有文件内容
items=upload.parseRequest(request).iterator();
while(items.hasNext()){
FileItem item = (FileItem) items.next();
if(!item.isFormField()){
//取出上传文件的文件名称
String name = item.getName();
//取得上传文件以后的存储路径
String fileName=name.substring(name.lastIndexOf('\\')+1,name.length());
//上传文件以后的存储路径
String path= request.getRealPath("file")+File.separatorChar+fileName;
//上传文件
File uploaderFile = new File(path);
item.write(uploaderFile);
//打印上传成功信息
response.setContentType("text/html");
response.setCharacterEncoding("GB2312");
PrintWriter out = response.getWriter();
out.print("<font size='2'>上传文件为:"+name+"<br>保存的地址为"+path+ "</font>");
}
}
}catch(Exception e){
e.printStackTrace();
}
}
}
}
http://blog.163.com/lin305_gf/blog/static/969524402011718102116625/
这是给你转载的网易博客的
servlet上传文件
如果你是用的 框架 比如struts2 那就更简单一点了
热心网友
时间：2023-10-15 05:45
上传方法举例：
/**
* 上传文件
*
* @param fileName
* @param plainFilePath 文件路径路径
* @param filepath
* @return
* @throws Exception
*/
public static String fileUploadByFtp(String plainFilePath, String fileName, String filepath) throws Exception {
FileInputStream fis = null;
ByteArrayOutputStream bos = null;
FTPClient ftpClient = new FTPClient();
String bl = "false";
try {
fis = new FileInputStream(plainFilePath);
bos = new ByteArrayOutputStream(fis.available());
byte[] buffer = new byte[1024];
int count = 0;
while ((count = fis.read(buffer)) != -1) {
bos.write(buffer, 0, count);
}
bos.flush();
Log.info("加密上传文件开始");
Log.info("连接远程上传服务器"+CCFCCBUtil.CCFCCBHOSTNAME+":"+22);
ftpClient.connect(CCFCCBUtil.CCFCCBHOSTNAME, 22);
ftpClient.login(CCFCCBUtil.CCFCCBLOGINNAME, CCFCCBUtil.CCFCCBLOGINPASSWORD);
FTPFile[] fs;
fs = ftpClient.listFiles();
for (FTPFile ff : fs) {
if (ff.getName().equals(filepath)) {
bl="true";
ftpClient.changeWorkingDirectory("/"+filepath+"");
}
}
Log.info("检查文件路径是否存在：/"+filepath);
if("false".equals(bl)){
ViewUtil.dataSEErrorPerformedCommon( "查询文件路径不存在："+"/"+filepath);
return bl;
}
ftpClient.setBufferSize(1024);
ftpClient.setControlEncoding("GBK");
// 设置文件类型（二进制）
ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE);
ftpClient.storeFile(fileName, fis);
Log.info("上传文件成功："+fileName+"。文件保存路径："+"/"+filepath+"/");
return bl;
} catch (Exception e) {
throw e;
} finally {
if (fis != null) {
try {
fis.close();
} catch (Exception e) {
Log.info(e.getLocalizedMessage(), e);
}
}
if (bos != null) {
try {
bos.close();
} catch (Exception e) {
Log.info(e.getLocalizedMessage(), e);
}
}
}
}
备注：只需要修改上传的服务器地址、用户名、密码即可进行服务器访问上传。根据实际需要修改即可。
