clsmultipartprocess.java

一个完整的

package com.gforce.currency.clsupload;

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
/**
 * <p>Title: 吉力科技办公自动化系统</p>
 * <p>Description: 吉力科技办公自动化系统</p>
 * <p>Copyright: 版权所有 2003 (c) 西安吉力科技发展有限公司  Copyright (c) 2003 GForce Sceince & Technology</p>
 * <p>Company: 西安吉力科技发展有限公司 (GForce Sceince & Technology)</p>
 * @author 马登军
 * @version 1.0
 */
public class ClsMultipartProcess
{
    private static final String disposition="Content-Disposition: form-data; name=\"";
    private String boundary=null;
    private String formData=null;
    private int formLength=0;

    public ClsMultipartProcess(HttpServletRequest request)
    {
        try
        {
            DataInputStream in=new DataInputStream(request.getInputStream());
            String contentType=request.getContentType();
            formLength=request.getContentLength();

            if (formLength>0)
            {
                boundary=contentType.substring(contentType.lastIndexOf("=")+1,
                                               contentType.length());
                byte buffer[]=new byte[formLength];
                int readedNumber=0;
                int totalReadedNumber=0;

                while(totalReadedNumber<formLength)
                {
                    readedNumber=in.read(buffer, totalReadedNumber,
                                         formLength-totalReadedNumber);
                    totalReadedNumber+=readedNumber;
                }

                formData=new String(buffer, "ISO8859-1");
                buffer=null;
            }
        }
        catch(IOException ex)
        {
            ex.printStackTrace();
        }
    }

    public String getValue(String controlName)
    {
        String searchStr=disposition+controlName+"\"";
        String value=null;

        if (formLength>0)
        {
            int startPoint=formData.indexOf(searchStr);
            if (startPoint!=-1)
            {
                startPoint=formData.indexOf("\n", startPoint)+1;
                startPoint=formData.indexOf("\n", startPoint)+1;

                int endPoint=formData.indexOf(boundary, startPoint)-4;
                value=formData.substring(startPoint, endPoint);
            }
        }
        return value;
    }

    public String getFileName(String controlName)
    {
        String searchStr=disposition+controlName+"\"; filename=\"";
        String fileName=null;

        if (formLength>0)
        {
            int startPoint=formData.indexOf(searchStr);
            int endPoint=formData.indexOf("\n", startPoint);

            if (startPoint!=-1)
            {
                startPoint=startPoint+searchStr.length();
                fileName=formData.substring(startPoint, endPoint-2);

                int pos=fileName.lastIndexOf("\\");
                if (pos!=-1)
                {
                    fileName=fileName.substring(pos+1);
                }

                if (fileName!=null)
                {
                    try
                    {
                        fileName=new String(fileName.getBytes("ISO8859-1"));
                    }
                    catch(UnsupportedEncodingException ex)
                    {
                        ex.printStackTrace();
                    }
                }
            }
        }
        return fileName;
    }

    public String getFileContent(String controlName)
    {
        String searchStr=disposition+controlName+"\"; filename=\"";
        String fileContent=null;

        if (formLength>0)
        {
            int startPoint=formData.indexOf(searchStr);
            if (startPoint!=-1)
            {
                startPoint=formData.indexOf("\n", startPoint)+1;
                startPoint=formData.indexOf("\n", startPoint)+1;
                startPoint=formData.indexOf("\n", startPoint)+1;

                int endPoint=formData.indexOf(boundary, startPoint)-4;
                fileContent=formData.substring(startPoint, endPoint);
            }
        }
        return fileContent;
    }
}