/* z/I\hC9i
**SiteFileFetch.java "5!T-Z+F
*/ 03/mB2|TF(
package NetFox; +SB>>
import java.io.*; ;*G';VuT
import java.net.*; Op'&c0l
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public class SiteFileFetch extends Thread { IAHQT<]
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SiteInfoBean siteInfoBean = null; //文件信息Bean *N|ak =
long[] nStartPos; //开始位置 :O'QL,
long[] nEndPos; //结束位置 LPeVr^
FileSplitterFetch[] fileSplitterFetch; //子线程对象 B1V+CP3t
long nFileLength; //文件长度 ^@C/2RX!
boolean bFirst = true; //是否第一次取文件 *Fg)`M3g
boolean bStop = false; //停止标志 .k-t5d
File tmpFile; //文件下载的临时信息 WfXwI 'y
DataOutputStream output; //输出到文件的输出流 I&6M{,rnM
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ;nx.:f
public SiteFileFetch(SiteInfoBean bean) throws IOException 8wrO64_NO
{ 8B(=Y;w
siteInfoBean = bean; `6P2+wf1j~
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); /iEQ}
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); iR!]&Oh
if(tmpFile.exists ()) rb*0YCi
{ M>Q3;s
bFirst = false; ~>H,~</`
read_nPos(); k. NJ+
} .Y0O.
else va:<W H
{ !|l7b2NEz-
nStartPos = new long[bean.getNSplitter()]; oj[~H}>
nEndPos = new long[bean.getNSplitter()]; 0@um
} &Hyy .a
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public void run() A0Q`Aqs
{ 764eXh
//获得文件长度 '"+Gn52#
//分割文件 $@vB<(sk
//实例FileSplitterFetch 5NC77}^.
//启动FileSplitterFetch线程 !RPE-S
//等待子线程返回 ($!uBF-b
try{ C=(Q0-+L|
if(bFirst) &uF~t
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{ 3d]~e
nFileLength = getFileSize(); 6"o=`Sq
if(nFileLength == -1) +'Y?K]zbt
{ E=CA Wj\
System.err.println("File Length is not known!"); J[0 5T1
} g\?v 5
else if(nFileLength == -2) LEOri=?RF
{ YR? E
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System.err.println("File is not access!"); IN@o9pUjV
}
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else 7M
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{ %6%mf>Guf
for(int i=0;i<nStartPos.length;i++) +$#<gp"
{ ^pH8'^n
nStartPos = (long)(i*(nFileLength/nStartPos.length)); gaxM#
} Dkb`_HI
for(int i=0;i<nEndPos.length-1;i++) n.qT7d(
{ \NMqlxp2
nEndPos = nStartPos[i+1]; :4-,Ru1C"
} t#@z_Mn\
nEndPos[nEndPos.length-1] = nFileLength; @C!&lrf3
} .>#O'Z&q9
} 3!\h'5{
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//启动子线程 (sQXfeMz
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; =+K?@;?
for(int i=0;i<nStartPos.length;i++) -)^vO*b 0
{ Xp9I3nd|
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), cfilH"EK
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), U]gUGD!5x
nStartPos,nEndPos,i); 4_iA<}>|
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 7l$
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fileSplitterFetch.start(); 6pSTw\/6
} ~##FW|N)
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), j`"!G*Vh
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); hrq% { !Z
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", De^:9<{jc
nEndPos = " + nFileLength); GC7 WRA
// fileSplitterFetch[nPos.length-1].start(); M;Pry3J
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//等待子线程结束 yc~<h/}#
//int count = 0; p&x!m}!
//是否结束while循环 aVHIU3
boolean breakWhile = false; hHmm(~5gR
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while(!bStop) fn,hP_
{ ,3 /o7 '
write_nPos(); wpYk`Lr
Utility.sleep(500); #:0-t!<0C
breakWhile = true; hXth\e\[{`
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for(int i=0;i<nStartPos.length;i++) nOL.%
{ 3sdL\
if(!fileSplitterFetch.bDownOver) kMurNA=
{ "lw|EpQk`
breakWhile = false; i(;`x
break; =xIZJ8e
} $'3xl2T
} M yHv>
if(breakWhile) aH{)|?
break; M)+p H
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//count++; $U]T8;5Q
//if(count>4) KH;~VR8"/
// siteStop(); z``wqK
} ]5S`y{j1
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System.err.println("文件下载结束!"); w'(/dr
} `e
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catch(Exception e){e.printStackTrace ();} B+`4UfB]Z}
} ( ~5M{Xh
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//获得文件长度 tj@(0}pi4
public long getFileSize() e9h@G#
{ b^d{$eoH?|
int nFileLength = -1; WqNXE)'
try{ j
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URL url = new URL(siteInfoBean.getSSiteURL()); :Fb>=e
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); lJu^Bcrv
httpConnection.setRequestProperty("User-Agent","NetFox"); 2r!ltG3}
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int responseCode=httpConnection.getResponseCode(); 0Xh_.PF
if(responseCode>=400) <@-O06
{ .
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processErrorCode(responseCode); wL?Up>fr
return -2; //-2 represent access is error TR0y4u[
} c,2& -T}
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String sHeader; _K~h?
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for(int i=1;;i++) \tI%[g1M
{ uPz+*4+
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ! dzgi:
//Utility.log(in.readLine()); (E0
sHeader=httpConnection.getHeaderFieldKey(i); SraZxuPg>
if(sHeader!=null) {]R'U/
{ !'jq.RawP
if(sHeader.equals("Content-Length")) /e '3\,2_
{ (G"'Fb6d
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); V^2_]VFj
break; crM5&L9zF
} |
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} JnBUW"
else o]e,5]
break; N6y9'LGG`
} jfxNV2[
} K&|h%4O
catch(IOException e){e.printStackTrace ();} G68KoM
catch(Exception e){e.printStackTrace ();} Y_'ERqQ
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Utility.log(nFileLength); c|Ivet>3
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return nFileLength; +lym8n~-O
} buGBqx[
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//保存下载信息(文件指针位置) ?Z#N9Z~\
private void write_nPos() }
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{ ^{+ry<rS>
try{ g&Vhu8kNIA
output = new DataOutputStream(new FileOutputStream(tmpFile)); <>] DcA
output.writeInt(nStartPos.length); 8MJJ w;
for(int i=0;i<nStartPos.length;i++) v ccH(T
{ ')uYI;h9
// output.writeLong(nPos); ,-pE/3|(
output.writeLong(fileSplitterFetch.nStartPos); !vSI"$xd
output.writeLong(fileSplitterFetch.nEndPos); 66v,/#K
} 2@|`Ugjptl
output.close(); > G\0Z[<v,
} Qd}n4KF\
catch(IOException e){e.printStackTrace ();} jRK}H*uem
catch(Exception e){e.printStackTrace ();} 0]DOiA
} 0@ `]m
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//读取保存的下载信息(文件指针位置) Ni_H1G
private void read_nPos() .p#kW:zspA
{ 7H7
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try{ ? x%s
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DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ZbFD |~[ V
int nCount = input.readInt(); TDh)}Ms
nStartPos = new long[nCount]; MP%#)O6
nEndPos = new long[nCount]; d<m;Q}/l&h
for(int i=0;i<nStartPos.length;i++) VE\L&d2S
{ _H+]G"k/r
nStartPos = input.readLong(); VI!
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nEndPos = input.readLong(); <y6`8J7:
} fv;Q*; oC&
input.close(); BZeEZ2"
} 2q?/aw ;Z
catch(IOException e){e.printStackTrace ();} { 53FR
catch(Exception e){e.printStackTrace ();} =E-x0sr?
} <5zR-UA>
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private void processErrorCode(int nErrorCode) 4 9qa
{ 1[egCC\Mo_
System.err.println("Error Code : " + nErrorCode); OM EwGr(
} t^#1=nK
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//停止文件下载 }QE.|.fA1
public void siteStop() mR0`wrt
{ a"( Ws]K
bStop = true; )]>t(
for(int i=0;i<nStartPos.length;i++) `m 5\
fileSplitterFetch.splitterStop(); \mb4leg5
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} d?oXz| ;H(
} Y.m1d ?H 1
//负责部分文件的抓取 =ejcP&-V/
**FileSplitterFetch.java 0:{W
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*/
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package NetFox; 49FP&NgK
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import java.io.*; B>u`%Ry&
import java.net.*; ?V`-z#y7
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public class FileSplitterFetch extends Thread { ~<1s[Hu
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String sURL; //File URL 7FwtBO
long nStartPos; //File Snippet Start Position cqU6 Y*n
long nEndPos; //File Snippet End Position ?y|&Mz'XJ(
int nThreadID; //Thread's ID Q<>u)%92@
boolean bDownOver = false; //Downing is over t[|rp&xG
boolean bStop = false; //Stop identical aT^
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FileAccessI fileAccessI = null; //File Access interface B7Ket8<J
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException smCACQ$(
{ mxqZj8VuH
this.sURL = sURL; 7sVM[lr<
this.nStartPos = nStart; wPU5L*/*i
this.nEndPos = nEnd; 9DBX.|
nThreadID = id; [Or1
fileAccessI = new FileAccessI(sName,nStartPos);//定位 %)i&|AV"
} WD4"ft
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public void run() A^lm 0[3q
{ :U\*4l
while(nStartPos < nEndPos && !bStop) A8ViJ
{ G5hRx@vfrL
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try{ f['I4 /o
URL url = new URL(sURL); (6c/)MH
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); W,8Uu1X =
httpConnection.setRequestProperty("User-Agent","NetFox"); HnPy";{
String sProperty = "bytes="+nStartPos+"-"; B\D)21Ik}%
httpConnection.setRequestProperty("RANGE",sProperty); z*HM_u
Utility.log(sProperty); t7-r YY(
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