怎么实现文件上传呀？！

给个使用的代码，以及下载jspsmartload的地址。感激不尽！

什么都能上传
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import com.neusoft.ExtendLibraries.ExtendConfig.configInfo;public class ImportServlet extends HttpServlet {
  private static final String CONTENT_TYPE = "text/html; charset=GBK";
  private static final int ONE_MEG = 2048*1024;  //Initialize global variables
  public void init() throws ServletException {
  }  //Process the HTTP Get request
  public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    doPost(request,response);
  }
  //Process the HTTP Post request
  public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException{
    int buffsize = 1024*8;
    int contentLength = request.getContentLength();
    // Hashtable pageItems = null;
    // value chosen to limit denial of service - 2 MB, in this case
    if (contentLength > ONE_MEG){
      System.out.println ("contentLength > ONE_MEG");
      response.setContentType("text/html");
      ServletOutputStream out = response.getOutputStream();
      out.println("<html><head><title>Too big</title></head>");
      out.println("<body><h1>错误 - 文件大于2M！");
      out.println("</h1></body></html>");
      out.close();
    }
    else{
      HttpSession session = request.getSession(true);
      int status=0;//status=0:非正文；status=1:分隔符；status=2:文件内容；status=3:其它内容
      String ContentType=request.getHeader("content-type");
      String boundary=ContentType.substring(ContentType.indexOf("boundary=")+9);
      String fileName="";
      String itemName="";
      String lastItem="";
      Properties pp = new Properties();
      try{
        pp = configInfo.getConfigObj();
      }catch(Exception e){      }      String strPath=pp.getProperty("OutputPath");// "D:\\Application_Studio\\JTP\\lib\\";
      ServletInputStream in = request.getInputStream();
      byte[] b = new byte[buffsize];
      byte[] byContent = new byte[contentLength];
      int result;
      int totalRead = 0;
      FileOutputStream fileout = null;
      try{
        result = in.readLine(b, 0, b.length);
        while (result != -1){
          String rowStr=new String(b,0,result);
          if (IsBoundary(rowStr,boundary)){ //遇到分割符
            switch(status){
              case 0:break;
              case 1:break;
              case 2:
                if ( totalRead!=0&!fileName.equals("")){
                  fileout =new FileOutputStream(strPath+fileName);
                  fileout.write(byContent, 0, totalRead);
                  totalRead=0 ;
                }
                break;
              case 3:
                String itemContent=new String(byContent,0,totalRead);
                if (itemName.equals(lastItem)){
                  String sval =(String) session.getAttribute (itemName);
                  sval+=";"+ itemContent;
                  session.setAttribute(itemName, sval);
                }
                else{
                  session.setAttribute(itemName, itemContent);
                }
                lastItem=itemName;
                break;
            }
            totalRead=0;
            status=0;
          }
          else if ( status<2 ){ //非正文内容
            if (IsFile(rowStr)){
              fileName=getFilename(rowStr);
              if (!fileName.equals("")){
                session.setAttribute("filename", "<A href=http://192.168.66.87:8080/upload/"+ fileName+">"+ fileName+"</A>");
              }              result = in.readLine(b, 0, buffsize);//跳过冗余信息
              result = in.readLine(b, 0, buffsize);//跳过冗余信息
              status=2;
            }
            else if (IsElement(rowStr)){
              itemName=getElename(rowStr);
              status=3;
            }
          }
          else {   //上载文件内容或表单提交的数据
            for ( int i=0; i<result; i++ ){
              byContent[totalRead+i]=b[i];
            }
            totalRead+=result;
          }          result = in.readLine(b, 0, buffsize);        }
        fileout.close();
      }catch (IOException ioe){
        System.out.println("IOException at Import File:"+ioe.getMessage());
        ioe.printStackTrace();
      }
    }//end if (contentLength > ONE_MEG)
    response.setContentType("text/html");
    PrintWriter out = new PrintWriter (response.getOutputStream());
    out.println("<html>");
    out.println("<head><title>upload</title></head>");
    out.println("<body>");
    out.println("文件上传成功!");
    out.println("</body></html>");
    out.close();
  }//end doPost()  public String getServletInfo(){
    return "A servlet that shows the request headers and body sent by the client";
  }
  public boolean IsBoundary(String str,String boundary){
    if(str.length() < 40 & str.length() > 60 ) return false;
    if(str.indexOf(boundary)!=-1) return true;
    else return false;
  }
  public boolean IsFile(String str){
    if(str.length() < 53 & str.length() >253) return false;
    if(str.indexOf("filename=")!=-1) return true;
    else return false;
  }
  public boolean IsElement(String str){
    if(str.length() < 40 & str.length() >253) return false;
    if(str.indexOf("name=")!=-1) return true;
    else return false;
  }
  public String getFilename(String str){
    String pathName=str.substring(str.indexOf("filename="));
    int startIndex=pathName.lastIndexOf("\\")+1;
    int endIndex=pathName.length()-3;
    return pathName.substring(startIndex,endIndex);
  }
  public String getElename(String str){
    String tempStr=str.substring(str.indexOf("name=\"")+6);
    return tempStr.substring(0,tempStr.indexOf("\""));
  }  //Clean up resources
  public void destroy() {
  }
}www.jspsmart.com

您给的是一个javaBean吧？可是怎么用呀？您能再给一个简单的调用的过程的代码吗？另外，调用这个javaBean时，是否还可以同时进行其他的操作呀？因为我还要将文件名存入数据库呀！请帮忙了，谢谢！

如果你没什么特别的要求，就用jspsmartUpload的例子中的东东吧，
你要加上数据库操作，最好还是用自己的XXX.jsp文件。但调用的是jspsmartUpload的bean

我调用jspsmartUpload的bean时出现底下错误信息？
请高手帮忙！谢谢！
java.lang.IllegalArgumentException: This path does not exist (1135).

你看一下jspsmartUpload中的Sample4.htm和Sample4.jsp两个页面的代码，
数据库中表格建立的sql语句：
CREATE TABLE TFILES (ID INT(4) NOT NULL, FILENAME VARCHAR(255), FILE LONGBLOB, PRIMARY KEY (ID));
INSERT TABLE TFILES (ID, FILENAME, FILE) VALUES (1,"sample",null);good luck!

使用jspsmartupload组件吧，到www.jspsmart下载一个，自己看看源代码就ok了

调试易

怎么实现文件上传呀？！

解决方案 »