java文件上传源码（java文件上传代码）
本文目录一览：
java上传文件代码
public class FileUpLoad extends ActionSupport{
//"多文件上传就用list就可以了private ListFile file;"
private File file;
//上传文本的name
public File getFile() {
return file;
}
public void setFile(File file) {
this.file = file;
}
private String fileContentType;
//上传的文件类型。
public String getFileContentType() {
return fileContentType;
}
public void setFileContentType(String fileContentType) {
this.fileContentType = fileContentType;
}
//获取上传文件的名称
private String fileFileName;
public String getFileFileName() {
return fileFileName;
}
public void setFileFileName(String fileFileName) {
this.fileFileName = fileFileName;
}
public String upload() throws Exception
{
//获取文件上传路径
String root=ServletActionContext.getRequest().getRealPath("/upload");
InputStream is=new FileInputStream(file);
String.substring(fileFileName.indexOf("."));//截取上传文件的后缀。便于新定义名称。.jpg
System.out.println(name);
File descFile=new File(root,新定义的文件名称+fileFileName.indexOf("."));
OutputStream os=new FileOutputStream(descFile);
byte[] buffer=new byte[1024];
int length=0;
while(-1!=(length=(is.read(buffer))))
{
os.write(buffer, 0, length);
}
is.close();
os.close();
return SUCCESS;
}
}
求：java 文件上传源码（全）
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import org.apache.commons.fileupload.*;
import org.apache.commons.fileupload.servlet.*;
import org.apache.commons.fileupload.disk.*;public class UploadServlet extends HttpServlet {
private String filePath; //存放上传文件的目录
private String tempFilePath; //存放临时文件的目录 public void init(ServletConfig config)throws ServletException {
super.init(config);
filePath=config.getInitParameter("filePath");
tempFilePath=config.getInitParameter("tempFilePath");
filePath=getServletContext().getRealPath(filePath);
tempFilePath=getServletContext().getRealPath(tempFilePath);
}
public void doPost(HttpServletRequest request,HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/plain");
//向客户端发送响应正文
PrintWriter outNet=response.getWriter();
try{
//创建一个基于硬盘的FileItem工厂
DiskFileItemFactory factory = new DiskFileItemFactory();
//设置向硬盘写数据时所用的缓冲区的大小，此处为4K
factory.setSizeThreshold(4*1024);
//设置临时目录
factory.setRepository(new File(tempFilePath)); //创建一个文件上传处理器
ServletFileUpload upload = new ServletFileUpload(factory);
//设置允许上传的文件的最大尺寸，此处为4M
upload.setSizeMax(4*1024*1024);
List /* FileItem */ items = upload.parseRequest(request); Iterator iter = items.iterator();
while (iter.hasNext()) {
FileItem item = (FileItem) iter.next();
if(item.isFormField()) {
processFormField(item,outNet); //处理普通的表单域
}else{
processUploadedFile(item,outNet); //处理上传文件
}
}
outNet.close();
}catch(Exception e){
throw new ServletException(e);
}
} private void processFormField(FileItem item,PrintWriter outNet){
String name = item.getFieldName();
String value = item.getString();
outNet.println(name+":"+value+"\r\n");
}
private void processUploadedFile(FileItem item,PrintWriter outNet)throws Exception{
String filename=item.getName();
int index=filename.lastIndexOf("\\");
filename=filename.substring(index+1,filename.length());
long fileSize=item.getSize();
if(filename.equals("") fileSize==0)return; File uploadedFile = new File(filePath+"/"+filename);
item.write(uploadedFile);
outNet.println(filename+" is saved.");
outNet.println("The size of " +filename+" is "+fileSize+"\r\n");
}
}
java 文件上传的代码，尽量详细一点。。。
// 这是我写的一个方法，里面只需要传两个参数就OK了，在任何地方调用此方法都可以文件上传
/**
* 上传文件
* @param file待上传的文件
* @param storePath待存储的路径(该路径还包括文件名)
*/
public void uploadFormFile(FormFile file,String storePath)throws Exception{
// 开始上传
InputStream is =null;
OutputStream os =null;
try {
is = file.getInputStream();
os = new FileOutputStream(storePath);
int bytes = 0;
byte[] buffer = new byte[8192];
while ((bytes = is.read(buffer, 0, 8192)) != -1) {
os.write(buffer, 0, bytes);
}
os.close();
is.close();
} catch (Exception e) {
throw e;
}
finally{
if(os!=null){
try{
os.close();
os=null;
}catch(Exception e1){
;
}
}
if(is!=null){
try{
is.close();
is=null;
}catch(Exception e1){
;
}
}
}
}
跪求java上传文件的原代码;谢谢;
package web;
import java.io.File;
import java.io.IOException;
import java.net.URLDecoder;
import java.util.List;
import javax.servlet.ServletContext;
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.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
public class FileLoadServlet extends HttpServlet {
public void service(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
//创建工厂类实例
DiskFileItemFactory factory=new DiskFileItemFactory();
ServletFileUpload sfu=new ServletFileUpload(factory);//创建解析器
try {
//FileItem对象封装了一个表单单中的所有的数据
ListFileItem items=sfu.parseRequest(request);
//通过FileItem对象提供的方法来获得表单中的数据
for(int i=0;iitems.size();i++){
FileItem item=items.get(i);
if(item.isFormField()){
//除了input type="file"之外的表单域
String value=item.getString();
System.out.println(value);
}else{
ServletContext sctx=getServletContext();
String path=sctx.getRealPath("upload");
System.out.println("path:"+path);
//获得上传文件名称
String fileName=item.getName();
File file=new File(path+"\\"+URLDecoder.decode(fileName, "GBK"));
item.write(file);
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
这是浏览器端上传到服务器的
