JAvaブロックダウンロード
17912 ワード
package com.test;
import java.io.*;
/**
*
* @author wzztestin
*
*/
public class DownFileAccess implements Serializable {
/**
*
*/
private static final long serialVersionUID = -2518013155676212866L;
FileOutputStream oSavedFile;
long nPos;
public DownFileAccess() throws IOException {
this("", 0);
}
/**
*
* @param sName
* @param nPos
* @throws IOException
*/
public DownFileAccess(String sName, long nPos) throws IOException {
oSavedFile = new FileOutputStream(new File(sName));
this.nPos = nPos;
}
/**
*
* @param b
* @param nStart
* @param nLen
* @return
*/
public synchronized int write(byte[] b, int nStart, int nLen) {
int n = -1;
try {
oSavedFile.write(b, nStart, nLen);
n = nLen;
} catch (IOException e) {
e.printStackTrace();
}
return n;
}
}
package com.test;
import java.io.File;
public class DownFileInfoBean {
private String sSiteURL; //
private String sFilePath; //
private String sFileName; //
private int nSplitter; // ， 5
private boolean fileflag; // FALSE , TRUE URL
private File downfile;
public File getDownfile() {
return downfile;
}
public void setDownfile(File downfile) {
this.downfile = downfile;
}
public boolean getFileflag() {
return fileflag;
}
public void setFileflag(boolean fileflag) {
this.fileflag = fileflag;
}
/**
*
*/
public DownFileInfoBean() {
// default 5
this("", "", "", 5,false,null);
}
/**
*
* @param sURL
* @param sPath
* @param sName
* @param nSpiltter
* @param fileflag
* @param downfile (FILE)
*/
public DownFileInfoBean(String sURL, String sPath, String sName, int nSpiltter,boolean fileflag,File downfile) {
sSiteURL = sURL;
sFilePath = sPath;
sFileName = sName;
this.nSplitter = nSpiltter;
this.fileflag = fileflag;
this.downfile = downfile;
}
public String getSSiteURL() {
return sSiteURL;
}
public void setSSiteURL(String value) {
sSiteURL = value;
}
public String getSFilePath() {
return sFilePath;
}
public void setSFilePath(String value) {
sFilePath = value;
}
public String getSFileName() {
return sFileName;
}
public void setSFileName(String value) {
sFileName = value;
}
public int getNSplitter() {
return nSplitter;
}
public void setNSplitter(int nCount) {
nSplitter = nCount;
}
}
package com.test;
/**
*
* @author wzztestin
*
*/
public class DownFileUtility {
public DownFileUtility() {
}
public static void sleep(int nSecond) {
try {
Thread.sleep(nSecond);
} catch (Exception e) {
e.printStackTrace();
}
}
public static void log(String sMsg) {
System.err.println(sMsg);
}
public static void log(int sMsg) {
System.err.println(sMsg);
}
}
package com.test;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.net.HttpURLConnection;
import java.net.URL;
/**
*
* @author wzztestin
*
*/
/**
*
* @author wzztestin
*
*/
public class DownFileFetch extends Thread {
DownFileInfoBean siteInfoBean = null; // Bean
long[] nStartPos; //
long[] nEndPos; //
DownFileSplitterFetch[] fileSplitterFetch; //
long nFileLength; //
boolean bFirst = true; //
boolean bStop = false; //
File tmpFile; //
DataOutputStream output; //
boolean fileflag; //
File downfile; //
int splitter = 0;
/**
*
* @param bean
* @throws IOException
*/
public DownFileFetch(DownFileInfoBean bean) throws IOException {
siteInfoBean = bean;
/**
* File.separator windows \,unix /
*/
tmpFile = new File(bean.getSFilePath() + File.separator
+ bean.getSFileName() + ".info");
if (tmpFile.exists()) {
bFirst = false;
//
read_nPos();
} else {
nStartPos = new long[bean.getNSplitter()];
nEndPos = new long[bean.getNSplitter()];
}
fileflag = bean.getFileflag();
downfile = bean.getDownfile();
this.splitter = bean.getNSplitter();
}
public void run() {
//
//
// FileSplitterFetch
// FileSplitterFetch
//
try {
if (bFirst) {
nFileLength = getFileSize();
if (nFileLength == -1) {
System.err.println("File Length is not known!");
} else if (nFileLength == -2) {
System.err.println("File is not access!");
} else {
for (int i = 0; i < nStartPos.length; i++) {
nStartPos[i] = (long) (i * (nFileLength / nStartPos.length));
}
for (int i = 0; i < nEndPos.length - 1; i++) {
nEndPos[i] = nStartPos[i + 1];
}
nEndPos[nEndPos.length - 1] = nFileLength;
}
}
//
fileSplitterFetch = new DownFileSplitterFetch[nStartPos.length];
for (int i = 0; i < nStartPos.length; i++) {
fileSplitterFetch[i] = new DownFileSplitterFetch(
siteInfoBean.getSSiteURL(), siteInfoBean.getSFilePath()
+ File.separator + siteInfoBean.getSFileName()+"_"+i,
nStartPos[i], nEndPos[i], i,fileflag,downfile);
DownFileUtility.log("Thread " + i + " , nStartPos = " + nStartPos[i]
+ ", nEndPos = " + nEndPos[i]);
fileSplitterFetch[i].start();
}
// fileSplitterFetch[nPos.length-1] = new
// FileSplitterFetch(siteInfoBean.getSSiteURL(),siteInfoBean.getSFilePath()
// + File.separator +
// siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1);
// FileUtility.log("Thread " +(nPos.length-1) +
// ",nStartPos = "+nPos[nPos.length-1]+",nEndPos = " + nFileLength);
// fileSplitterFetch[nPos.length-1].start();
//
// int count = 0;
// while
boolean breakWhile = false;
while (!bStop) {
write_nPos();
DownFileUtility.sleep(500);
breakWhile = true;
for (int i = 0; i < nStartPos.length; i++) {
if (!fileSplitterFetch[i].bDownOver) {
breakWhile = false;
break;
}
}
if (breakWhile)
break;
// count++;
// if(count>4)
// siteStop();
}
hebinfile(siteInfoBean.getSFilePath()+ File.separator + siteInfoBean.getSFileName(),splitter);
System.err.println(" ！");
} catch (Exception e) {
e.printStackTrace();
}
}
/**
*
* @return
*/
public long getFileSize() {
int nFileLength = -1;
if(fileflag){
try {
URL url = new URL(siteInfoBean.getSSiteURL());
HttpURLConnection httpConnection = (HttpURLConnection) url
.openConnection();
httpConnection.setRequestProperty("User-Agent", "NetFox");
int responseCode = httpConnection.getResponseCode();
if (responseCode >= 400) {
processErrorCode(responseCode);
return -2; // -2 represent access is error
}
String sHeader;
for (int i = 1;; i++) {
// DataInputStream in = new
// DataInputStream(httpConnection.getInputStream ());
// FileUtility.log(in.readLine());
sHeader = httpConnection.getHeaderFieldKey(i);
if (sHeader != null) {
if (sHeader.equals("Content-Length")) {
nFileLength = Integer.parseInt(httpConnection
.getHeaderField(sHeader));
break;
}
} else
break;
}
} catch (IOException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
DownFileUtility.log(nFileLength);
}else{
try{
File myflie = downfile;
nFileLength = (int)myflie.length();
}catch(Exception e){
e.printStackTrace();
}
DownFileUtility.log(nFileLength);
}
return nFileLength;
}
/**
* （ ）
*/
private void write_nPos() {
try {
output = new DataOutputStream(new FileOutputStream(tmpFile));
output.writeInt(nStartPos.length);
for (int i = 0; i < nStartPos.length; i++) {
// output.writeLong(nPos[i]);
output.writeLong(fileSplitterFetch[i].nStartPos);
output.writeLong(fileSplitterFetch[i].nEndPos);
}
output.close();
} catch (IOException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* （ ）
*/
private void read_nPos() {
try {
DataInputStream input = new DataInputStream(new FileInputStream(
tmpFile));
int nCount = input.readInt();
nStartPos = new long[nCount];
nEndPos = new long[nCount];
for (int i = 0; i < nStartPos.length; i++) {
nStartPos[i] = input.readLong();
nEndPos[i] = input.readLong();
}
input.close();
} catch (IOException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
/**
*
* @param nErrorCode
*/
private void processErrorCode(int nErrorCode) {
System.err.println("Error Code : " + nErrorCode);
}
/**
*
*/
public void siteStop() {
bStop = true;
for (int i = 0; i < nStartPos.length; i++)
fileSplitterFetch[i].splitterStop();
}
private void hebinfile(String sName,int length){
try{
RandomAccessFile saveinput = new RandomAccessFile(sName,"rw");
for(int i = 0;i<length;i++){
try {
RandomAccessFile input = new RandomAccessFile (new File(sName+"_"+i),"r");
byte[] b = new byte[1024];
int nRead;
while ((nRead = input.read(b, 0, 1024)) > 0) {
write(saveinput,b, 0, nRead);
}
input.close();
} catch (Exception e) {
e.printStackTrace();
}
}
System.err.println("file size is "+saveinput.length());
}catch(Exception e){
e.printStackTrace();
}
}
/**
*
* @param b
* @param nStart
* @param nLen
* @return
*/
private int write(RandomAccessFile oSavedFile,byte[] b, int nStart, int nLen) {
int n = -1;
try {
oSavedFile.seek(oSavedFile.length());
oSavedFile.write(b, nStart, nLen);
n = nLen;
} catch (IOException e) {
e.printStackTrace();
}
return n;
}
}
package com.test;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.RandomAccessFile;
import java.net.HttpURLConnection;
import java.net.URL;
/**
*
* @author wzztestin
*
*/
public class DownFileSplitterFetch extends Thread {
String sURL; //
long nStartPos; //
long nEndPos; //
int nThreadID; // ID
boolean bDownOver = false; //
boolean bStop = false; //
DownFileAccess fileAccessI = null; //
boolean fileflag; // URL
File file = null;//
/**
* ，
* @param sURL
* @param sName
* @param nStart
* @param nEnd
* @param id
* @param fileflag
* @param downfile
* @throws IOException
*/
public DownFileSplitterFetch(String sURL, String sName, long nStart, long nEnd,
int id,boolean fileflag,File downfile) throws IOException {
this.sURL = sURL;
this.nStartPos = nStart;
this.nEndPos = nEnd;
nThreadID = id;
fileAccessI = new DownFileAccess(sName, nStartPos);
this.fileflag = fileflag;
this.file = downfile;
}
public void run() {
if(fileflag){
this.urldownload();
}else{
this.filedownload();
}
}
/**
*
* @param con
*/
public void logResponseHead(HttpURLConnection con) {
for (int i = 1;; i++) {
String header = con.getHeaderFieldKey(i);
if (header != null)
// responseHeaders.put(header,httpConnection.getHeaderField(header));
DownFileUtility.log(header + " : " + con.getHeaderField(header));
else
break;
}
}
/**
*
*/
private void urldownload(){
while (nStartPos < nEndPos && !bStop) {
try {
URL url = new URL(sURL);
HttpURLConnection httpConnection = (HttpURLConnection) url
.openConnection();
httpConnection.setRequestProperty("User-Agent", "NetFox");
String sProperty = "bytes=" + nStartPos + "-";
httpConnection.setRequestProperty("RANGE", sProperty);
DownFileUtility.log(sProperty);
InputStream input = httpConnection.getInputStream();
// logResponseHead(httpConnection);
byte[] b = new byte[1024];
int nRead;
while ((nRead = input.read(b, 0, 1024)) > 0
&& nStartPos < nEndPos && !bStop) {
nStartPos += fileAccessI.write(b, 0, nRead);
// if(nThreadID == 1)
// FileUtility.log("nStartPos = " + nStartPos + ", nEndPos = " +
// nEndPos);
}
DownFileUtility.log("Thread " + nThreadID + " is over!");
bDownOver = true;
// nPos = fileAccessI.write (b,0,nRead);
} catch (Exception e) {
e.printStackTrace();
}
}
}
/**
*
*/
private void filedownload(){
DownFileUtility.log("Thread " + nThreadID + " count "+(nEndPos-nStartPos));
DownFileUtility.log("Thread " + nThreadID + "start >> "+nStartPos +"------end >> "+nEndPos);
while (nStartPos < nEndPos && !bStop) {
try {
RandomAccessFile input = new RandomAccessFile(file,"r");
input.seek(nStartPos);
byte[] b = new byte[1024];
int nRead;
while ((nRead = input.read(b, 0, 1024)) > 0
&& nStartPos < nEndPos && !bStop) {
if((nStartPos+nRead)>nEndPos)
{
nRead = (int)(nEndPos - nStartPos);
}
nStartPos += fileAccessI.write(b, 0, nRead);
}
DownFileUtility.log("Thread " + nThreadID + " is over!");
bDownOver = true;
input.close();
} catch (Exception e) {
e.printStackTrace();
}
}
DownFileUtility.log("Thread " + nThreadID + "last start >> "+nStartPos );
}
/**
*
*/
public void splitterStop() {
bStop = true;
}
}package com.test;
import java.io.File;
public class TestMethod {
public TestMethod() {
try {
/*DownFileInfoBean bean = new DownFileInfoBean(
"http://cdn.market.hiapk.com/data/upload//2012/09_27/17/car.wu.wei.kyo.shandian_174928.apk", "D:\\temp",
"shandian_174928.apk", 5,true,null);*/
File file = new File("D:\\dan07.apk");
DownFileInfoBean bean = new DownFileInfoBean(null, "D:\\temp",
"dan07.apk", 3,false,file);
DownFileFetch fileFetch = new DownFileFetch(bean);
fileFetch.start();
} catch (Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
new TestMethod();
}
}