fileupload.java~4~

c++通信编程学习1

package com.j2ee.func.upload;

import java.io.*;
import java.util.*;

import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.jsp.*;
import java.text.SimpleDateFormat;
public class FileUpload {
    private ServletRequest request;
    private ServletResponse response;
    private ServletConfig config;
    private ServletContext app;
    private ServletInputStream DATA;
    private int FormSize;
    private File f1;
    private int filesize=0;
    private FileOutputStream os;
    private DataInputStream is;
    private String path;
    private String filename;
    byte[] b;
    byte t;
    boolean flag = false;
    public FileUpload(String path) {
        this.path = path;
    }

    public void initialize(ServletContext application, ServletConfig config,
                           HttpServletRequest request,
                           HttpServletResponse response) throws IOException {
        this.request = request;
        this.response = response;
        this.config = config;
        this.app = application;
        DATA = request.getInputStream();
        FormSize = request.getContentLength();
    }

    public void initialize(PageContext pageContext) throws IOException {
        request = pageContext.getRequest();
        app = pageContext.getServletContext();
        response = pageContext.getResponse();
        config = pageContext.getServletConfig();
        DATA = request.getInputStream();
        FormSize = request.getContentLength();
    }

public boolean setPath(String lm){
    if(lm.equals("ydm")){
        path="../j2ee/upload/ydm/";
    }
    if(lm.equals("sj")){
        path="../j2eemanage/upload/sj/";
    }
    if(lm.equals("yy")){
        path="../j2eemanage/upload/yy/";
    }
return true;
}
    public boolean setFilename(String s) {
        try {
            String path = app.getRealPath(s);
            f1 = new File(path);
            os = new FileOutputStream(f1);
        } catch (FileNotFoundException e) {

            return false;
        }
        return true;
    }
    public int getFilesize(){
        return filesize;
    }
    public void getByte() {
        int i = 0;
        try {
            is = new DataInputStream(DATA);
            b = new byte[FormSize];

            while (true) {
                try {
                    t = is.readByte();
                    b[i] = t;
                    i++;
                } catch (EOFException e) {
                    break;
                }
            }
            is.close();
        } catch (IOException e) {}
    }

    public boolean save() {
        int i = 0, start1 = 0, start2 = 0;
        String temp = "";
        if (!flag) {
            getByte();
            flag = true;
        }
        try {
            temp = new String(b, "ISO8859_1");
        } catch (UnsupportedEncodingException e) {
            return (false);
        }
       /*
                start1=temp.indexOf("hf");
                temp=temp.substring(start1);
                start1=temp.indexOf("\r\n\r\n");
                temp=temp.substring(start1+4);
                start1=temp.indexOf("\r\n");
                String path=temp.substring(0,start1);
         */
        if(path==null){
            start1=temp.indexOf("lm");
            temp=temp.substring(start1);
            start1=temp.indexOf("\r\n\r\n");
            temp=temp.substring(start1+4);
            start1=temp.indexOf("\r\n");
            String lm=temp.substring(0,start1);
            this.setPath(lm);
        }
        start1 = temp.indexOf("filename=\"");
        temp = temp.substring(start1 + 10);
        start1 = temp.indexOf("\"");
        String fname = temp.substring(0, start1);
        int bf = 0;
        while ((bf = fname.indexOf("\\")) != -1) {
            fname = fname.substring(bf + 1);
        }
        Date date = new Date();
        SimpleDateFormat ff=new SimpleDateFormat("yyyymmddHHmmssSSS");
        filename = ff.format(date) + fname;
        path = path + filename;
        setFilename(path);
        start1 = temp.indexOf("\r\n\r\n");

        temp = temp.substring(start1 + 4);
        start2 = temp.indexOf(";\r\n");

        if (start2 != -1) {
            temp = temp.substring(0, start2);
        }
        try {
            byte[] img = temp.getBytes("ISO8859_1");
            for (i = 0; i < img.length; i++) {
                os.write(img[i]);
            }
            os.close();
        } catch (IOException e) {
            return (false);
        }
        filesize=temp.length();
        return (true);

    }

    public String getGetFilename() {
        return filename;
    }

}