JSP 用cos组件上传怎么取得到文件的大小？

package com.modules;

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

import javax.servlet.*;
import javax.servlet.http.*;

public class FormData {
    private String f_ex = "gif,bmp,jpg,png"; //允许上传文件类型,以逗号隔开,注意小写
    private long f_max = 5000; //允许上传文件大小 kb
    private String f_path = ""; //上传文件存入目录
    private String f_url = ""; //上传文件返回URL路径
    private String f_name = String.valueOf((new Date()).getTime()) +
                            String.valueOf(number(5)); //上传文件名字 f_name+_f_name  _f_name+=1

    private int _f_name = 0;
    private String fileEx = ""; //扩展名
    private String key_name; //hash-------key（key_name=表单元素file名)对应文件上传路径
    private String path = "";
    private String errcodes = "";
    Hashtable hash = new Hashtable();

    public int number(int n) { //随机数
        Random rand = new Random();
        int i = rand.nextInt();
        i %= n;
        while (i == 0) {
            i = rand.nextInt();
            i %= n;
        }
        if (i < 0) {
            i = -i;
        }
        return (i);
    }

    public String rtrim(String Str) {
        return Str.replaceAll("\\s*$|\r|\n", "");
    }

    public void getFormData(HttpServletRequest req) throws ServletException,
            IOException {
        errcodes = "";
        ServletInputStream stream = null;
        try {
            stream = req.getInputStream();
        } catch (Exception e) {
            stream.close();
            return;
        }
        int i = 0;
        byte f_data[] = new byte[4096];

        i = stream.readLine(f_data, 0, f_data.length);
        String f_bound = (new String(f_data)).trim(); //得到分割符
        while (i != -1) {
            String f_line = "";
            f_data = new byte[4096];
            i = stream.readLine(f_data, 0, f_data.length);
            f_line = (new String(f_data)).trim();

            if (f_line.indexOf("\"; filename=\"") != -1 &&
                !f_line.
                substring(f_line.indexOf("\"; filename=\"") + 13,
                          f_line.length() - 1).equals("")) {
                key_name = f_line.substring(f_line.indexOf("name=\"") + 6,
                                            f_line.indexOf("\"; filename=\""));
                fileEx = f_line.substring(f_line.indexOf("\"; filename=\"") +
                                          13, f_line.length() - 1);
                String filex[] = fileEx.split("\\.");
                fileEx = filex[filex.length - 1].toLowerCase();
                f_line = "";
                f_data = new byte[4096];
                i = stream.readLine(f_data, 0, f_data.length); //读取Content-Type
                f_line = (new String(f_data)).trim();
                if (("," + f_ex + ",").indexOf("," + fileEx + ",") == -1) {
                    errcodes = "<li>只支持上传" + f_ex + "类型文件";
                } else {
                    i = stream.readLine(f_data, 0, f_data.length); //下跳一行
                    try {
                        _f_name += 1;
                        File file = new File(f_path, f_name +
                                             String.valueOf(_f_name) + "." +
                                             fileEx);
                        FileOutputStream fos = new FileOutputStream(file);
                        DataOutputStream dos = new DataOutputStream(fos);
                        while (i != -1) {
                            f_line = "";
                            f_data = new byte[4096];
                            i = stream.readLine(f_data, 0, f_data.length);
                            f_line = (new String(f_data)).trim();
                            if (f_line.startsWith(f_bound)) {
                                break;
                            }
                            dos.write(f_data, 0, i);
                        }
                        fos.flush();
                        fos.close();
                        dos.close();
                        if (file.length() / 1024 > f_max) {
                            errcodes = "<li>您上传的文件为" + file.length() / 1024 +
                                       "KB,超出允许上传最大值 " + f_max + " KB";
                            file.delete();
                        }
                        if (file.exists()) {
                            path = f_url + f_name + String.valueOf(_f_name) +
                                   "." +
                                   fileEx;
                            hash.put(key_name, path);
                        }
                    } catch (Exception e) {
                        errcodes = "<li>保存文件失败";
                    }
                }
            } else if (f_line.indexOf(" name=\"") != -1) {
                String name = f_line.substring(38, f_line.length() - 1);
                i = stream.readLine(f_data, 0, f_data.length);
                f_line = "";
                while (i != -1) {
                    f_data = new byte[4096];
                    i = stream.readLine(f_data, 0, f_data.length);
                    if ((new String(f_data)).trim().startsWith(f_bound)) {
                        break;
                    }
                    f_line += rtrim(new String(f_data, 0, i, "gb2312")) +
                            "\r\n";
                }
                hash.put(name, f_line.substring(0, f_line.length() - 2));
            }
        }
        stream.close();
    }

    public String getData(String keys) {
        return (String)this.hash.get(keys);
    }

    public String getError() {
        return this.errcodes;
    }

    public void setPath(String f_path) { //setPath(application.getRealPath("/upload/"));
        this.f_path = f_path;
    }

    public String getPath() {
        return this.f_path;
    }

    public void setUrl(String f_url) { //setUrl("/upload/");
        this.f_url = f_url;
    }

    public String getUrl() {
        return this.f_url;
    }

    public void setFex(String f_ex) {
        this.f_ex = f_ex;
    }

    public String getFex() {
        return this.f_ex;
    }

    public void setMax(long f_max) {
        this.f_max = f_max;
    }

    public long getMax() {
        return this.f_max;
    }
}
别忘了结贴~

调试易

JSP 用cos组件上传怎么取得到文件的大小？

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