分享
 
 
 

一个文件上传JAVABEAN

王朝java/jsp·作者佚名  2008-05-31
窄屏简体版  字體: |||超大  

package com.upload;

import Java.io.*;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.ServletInputStream;

import javax.servlet.ServletException;

public class upload{

private static String newline = "\n";

private String uploadDirectory = ".";

private String ContentType = "";

private String CharacterEncoding = "";

private String getFileName(String s){

int i = s.lastIndexOf("\\");

if(i < 0 // i >= s.length() - 1){

i = s.lastIndexOf("/");

if(i < 0 // i >= s.length() - 1)

return s;

}

return s.substring(i + 1);

}

public void setUploadDirectory(String s){

uploadDirectory = s;

}

public void setContentType(String s){

ContentType = s;

int j;

if((j = ContentType.indexOf("boundary=")) != -1){

ContentType = ContentType.substring(j + 9);

ContentType = "--" + ContentType;

}

}

public void setCharacterEncoding(String s){

CharacterEncoding = s;

}

public void uploadFile( HttpServletRequest req) throws ServletException, IOException{

setCharacterEncoding(req.getCharacterEncoding());

setContentType(req.getContentType());

uploadFile(req.getInputStream());

}

public void uploadFile( ServletInputStream servletinputstream) throws ServletException, IOException{

String s5 = null;

String filename = null;

byte Linebyte[] = new byte[4096];

byte outLinebyte[] = new byte[4096];

int ai[] = new int[1];

int ai1[] = new int[1];

String line;

//得到文件名

while((line = readLine(Linebyte, ai, servletinputstream, CharacterEncoding)) != null){

int i = line.indexOf("filename=");

if(i >= 0){

line = line.substring(i + 10);

if((i = line.indexOf("\"")) > 0)

line = line.substring(0, i);

break;

}

}

filename = line;

if(filename != null && !filename.equals("\"")){

filename = getFileName(filename);

String sContentType = readLine(Linebyte, ai, servletinputstream, CharacterEncoding);

if(sContentType.indexOf("Content-Type") >= 0)

readLine(Linebyte, ai, servletinputstream, CharacterEncoding);

//File(String parent, String child)

//Creates a new File instance from a parent pathname string

//and a child pathname string.

File file = new File(uploadDirectory, filename);

//FileOutputStream(File file)

//Creates a file output stream to write to the file represented

//by the specified File object.

FileOutputStream fileoutputstream = new FileOutputStream(file);

while((sContentType = readLine(Linebyte, ai, servletinputstream, CharacterEncoding)) != null){

if(sContentType.indexOf(ContentType) == 0 && Linebyte[0] == 45)

break;

if(s5 != null){

//write(byte[] b, int off, int len)

//Writes len bytes from the specified byte array starting

//at offset off to this file output stream.

fileoutputstream.write(outLinebyte, 0, ai1[0]);

fileoutputstream.flush();

}

s5 = readLine(outLinebyte, ai1, servletinputstream, CharacterEncoding);

if(s5 == null // s5.indexOf(ContentType) == 0 && outLinebyte[0] == 45)

break;

fileoutputstream.write(Linebyte, 0, ai[0]);

fileoutputstream.flush();

}

byte byte0;

if(newline.length() == 1)

byte0 = 2;

else

byte0 = 1;

if(s5 != null && outLinebyte[0] != 45 && ai1[0] > newline.length() * byte0)

fileoutputstream.write(outLinebyte, 0, ai1[0] - newline.length() * byte0);

if(sContentType != null && Linebyte[0] != 45 && ai[0] > newline.length() * byte0)

fileoutputstream.write(Linebyte, 0, ai[0] - newline.length() * byte0);

fileoutputstream.close();

}

}

private String readLine(byte Linebyte[], int ai[],

ServletInputStream servletinputstream,

String CharacterEncoding){

 
 
 
免责声明:本文为网络用户发布,其观点仅代表作者个人观点,与本站无关,本站仅提供信息存储服务。文中陈述内容未经本站证实,其真实性、完整性、及时性本站不作任何保证或承诺,请读者仅作参考,并请自行核实相关内容。
2023年上半年GDP全球前十五强
 百态   2023-10-24
美众议院议长启动对拜登的弹劾调查
 百态   2023-09-13
上海、济南、武汉等多地出现不明坠落物
 探索   2023-09-06
印度或要将国名改为“巴拉特”
 百态   2023-09-06
男子为女友送行,买票不登机被捕
 百态   2023-08-20
手机地震预警功能怎么开?
 干货   2023-08-06
女子4年卖2套房花700多万做美容:不但没变美脸,面部还出现变形
 百态   2023-08-04
住户一楼被水淹 还冲来8头猪
 百态   2023-07-31
女子体内爬出大量瓜子状活虫
 百态   2023-07-25
地球连续35年收到神秘规律性信号,网友:不要回答!
 探索   2023-07-21
全球镓价格本周大涨27%
 探索   2023-07-09
钱都流向了那些不缺钱的人,苦都留给了能吃苦的人
 探索   2023-07-02
倩女手游刀客魅者强控制(强混乱强眩晕强睡眠)和对应控制抗性的关系
 百态   2020-08-20
美国5月9日最新疫情:美国确诊人数突破131万
 百态   2020-05-09
荷兰政府宣布将集体辞职
 干货   2020-04-30
倩女幽魂手游师徒任务情义春秋猜成语答案逍遥观:鹏程万里
 干货   2019-11-12
倩女幽魂手游师徒任务情义春秋猜成语答案神机营:射石饮羽
 干货   2019-11-12
倩女幽魂手游师徒任务情义春秋猜成语答案昆仑山:拔刀相助
 干货   2019-11-12
倩女幽魂手游师徒任务情义春秋猜成语答案天工阁:鬼斧神工
 干货   2019-11-12
倩女幽魂手游师徒任务情义春秋猜成语答案丝路古道:单枪匹马
 干货   2019-11-12
倩女幽魂手游师徒任务情义春秋猜成语答案镇郊荒野:与虎谋皮
 干货   2019-11-12
倩女幽魂手游师徒任务情义春秋猜成语答案镇郊荒野:李代桃僵
 干货   2019-11-12
倩女幽魂手游师徒任务情义春秋猜成语答案镇郊荒野:指鹿为马
 干货   2019-11-12
倩女幽魂手游师徒任务情义春秋猜成语答案金陵:小鸟依人
 干货   2019-11-12
倩女幽魂手游师徒任务情义春秋猜成语答案金陵:千金买邻
 干货   2019-11-12
 
推荐阅读
 
 
 
>>返回首頁<<
 
靜靜地坐在廢墟上,四周的荒凉一望無際,忽然覺得,淒涼也很美
© 2005- 王朝網路 版權所有