/* v#a`*^ ^
**SiteFileFetch.java WSn^P~vC
*/ %h g=@7,|
package NetFox; ~1`.iA
import java.io.*; SOE#@{IXBa
import java.net.*; <_uLf9ja
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public class SiteFileFetch extends Thread { mG7Wu{~=U
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SiteInfoBean siteInfoBean = null; //文件信息Bean |rH;}t|un
long[] nStartPos; //开始位置 :t?9$ dL
long[] nEndPos; //结束位置 -. L)-%wIV
FileSplitterFetch[] fileSplitterFetch; //子线程对象 chQt8Ar3
long nFileLength; //文件长度 S6h=}
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boolean bFirst = true; //是否第一次取文件 e-,U@_B
boolean bStop = false; //停止标志 xM9EO(u
File tmpFile; //文件下载的临时信息 "Fy34T0N
DataOutputStream output; //输出到文件的输出流 >J[g)$,
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) BXO(B'1)]
public SiteFileFetch(SiteInfoBean bean) throws IOException VE&
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{ Oq(_I
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siteInfoBean = bean; /4YXx|V
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 24:;vcb
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); [g]ks
if(tmpFile.exists ()) =8X`QUmT
{ v/c8P\
bFirst = false; iH#~eg
read_nPos(); P1vr}J
} Vpt)?];P
else R<Ojaj=V
{ H;k;%Zg;
nStartPos = new long[bean.getNSplitter()]; QN9$n%Z
nEndPos = new long[bean.getNSplitter()]; l:a+o gm3
} LS,/EGJ
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public void run() ZO2u[HSO>
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//获得文件长度 i5?)E7-
//分割文件 }pbyC
//实例FileSplitterFetch o*:VG\#Z6
//启动FileSplitterFetch线程 (?J6vK}S
//等待子线程返回 ZD6rD(l9
try{ 9U>ID{
if(bFirst) =$}P'[V
{ ?1xBhKq
nFileLength = getFileSize(); N;>>HN[bBP
if(nFileLength == -1) xrA(#\}f$
{ q]0a8[]3
System.err.println("File Length is not known!"); j?jEWreq]~
} jZ7/p ^c5R
else if(nFileLength == -2) Y$--Hp4
{ JS642T
System.err.println("File is not access!"); ]cc4+}L~
} W:aAe%S
else B cX}[?c
{ (s
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for(int i=0;i<nStartPos.length;i++) :bE ^b
{ QBR9BR
nStartPos = (long)(i*(nFileLength/nStartPos.length)); oB-&ma[ZS
} M/5/Tp
for(int i=0;i<nEndPos.length-1;i++) iVd*62$@$
{ t^ Aios~F
nEndPos = nStartPos[i+1]; U_ V0
} #KXaz Zu"
nEndPos[nEndPos.length-1] = nFileLength; mbsdiab#N
} ^v}Z5,aN
} j$Vv'on
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//启动子线程 UY5ia4_D
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; "}\2zub9
for(int i=0;i<nStartPos.length;i++) DGC-`z
{ H #E
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), _R1UEE3M
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), H'<9;bD -
nStartPos,nEndPos,i); Nn
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Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); q5BJsw
fileSplitterFetch.start(); $.QnM
} kNI m90,g
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 6NO=NL
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ~1S7\e7{
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", l'W?X '
nEndPos = " + nFileLength); .!U `,)I
// fileSplitterFetch[nPos.length-1].start(); BXa1[7Z
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//等待子线程结束 DA]!ndJD
//int count = 0; a,d\<mx
//是否结束while循环 [=Np.:Y%
boolean breakWhile = false; ,'Y*e[
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while(!bStop) 8!3+Obj
{ [dk|lkj@u\
write_nPos(); h"l{cDk
Utility.sleep(500); ).9-=P HlX
breakWhile = true; 5`^"<wNI
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for(int i=0;i<nStartPos.length;i++) *B#OLx
{ ,PJl32
if(!fileSplitterFetch.bDownOver) 0w< iz;30
{ klT6?'S
breakWhile = false; &4O"Xs`ka
break; s<E_74q1
} ; y=w :r\A
} xW/JItF
if(breakWhile) p&Nw:S
break; ,{J2i#g<
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//count++; |8`}yRsQ
//if(count>4) Z'S>i*Ts
// siteStop(); zFP}=K:o)
} tDy1Gh/c
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System.err.println("文件下载结束!"); 9tl Fbu
} BAX])~_
catch(Exception e){e.printStackTrace ();} /RX7AXXB
} *'d5~dz=
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//获得文件长度 !RiPr(m@y
public long getFileSize() 3AWB Y.
{ p7.@ez ;
int nFileLength = -1; ;1(OC-2>d
try{ fQOaTsyA
URL url = new URL(siteInfoBean.getSSiteURL()); Bw{@YDO{
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); XKks j!'B
httpConnection.setRequestProperty("User-Agent","NetFox"); H#w?$?nIWu
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int responseCode=httpConnection.getResponseCode(); "_?^uymw
if(responseCode>=400)
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{ ,wRrx&
processErrorCode(responseCode); I62Yg
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return -2; //-2 represent access is error uA}asm
} I]I5!\\ &[
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String sHeader; v7&$(HJ>]L
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for(int i=1;;i++) 1$xt=*.u|
{ jj.]R+.G
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); K.X% Q,XD
//Utility.log(in.readLine()); b[*di{?-
sHeader=httpConnection.getHeaderFieldKey(i); }jIb ^|#CD
if(sHeader!=null) \7og&j-h
{ (MxLw:AV
if(sHeader.equals("Content-Length")) 7[u&%
{ -P.)
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); g2iSc
break; (AwbZ n*
} yM\1n
} 8,B9y D
else Nc;7KMOIA
break; ](Sp0t
} P!]DV$o
} 8,['q~z
catch(IOException e){e.printStackTrace ();} @|d|orMC
catch(Exception e){e.printStackTrace ();} -Tz9J4xU&
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Utility.log(nFileLength); DORFK
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return nFileLength; wz:w R+
} =(hEr=f>7
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//保存下载信息(文件指针位置) VBd.5YW
private void write_nPos()
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{ (#
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try{ X59~)rH,
output = new DataOutputStream(new FileOutputStream(tmpFile)); wk-ziw
output.writeInt(nStartPos.length); T?% F
for(int i=0;i<nStartPos.length;i++) + 1v@L
{ K}a[ ~
// output.writeLong(nPos); .|o7YTcR:
output.writeLong(fileSplitterFetch.nStartPos); Y> 7/>x6
output.writeLong(fileSplitterFetch.nEndPos); 2I#fwsb
} 98V9AOgk
output.close(); %tpt+N?
} ob0clJX
catch(IOException e){e.printStackTrace ();} f PDnkr
catch(Exception e){e.printStackTrace ();} *;4r|#LG
} ZA:YoiaC#
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//读取保存的下载信息(文件指针位置)
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private void read_nPos() Ai/ay# E
{ fe&K2C%bm
try{ lRentNg0b
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); >Y[{m $-
int nCount = input.readInt(); 1UmV&
nStartPos = new long[nCount]; o&X!75^G>
nEndPos = new long[nCount]; kw1PIuz4&
for(int i=0;i<nStartPos.length;i++) < FN[{YsA
{ ! .!qJ%
nStartPos = input.readLong(); C96|T>bk
nEndPos = input.readLong(); <.=
} Q=>@:1=
input.close(); s%p(_pB
} bBg?x
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catch(IOException e){e.printStackTrace ();} YK_a37E{F
catch(Exception e){e.printStackTrace ();} Bz]64/
} F"9qBl~
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private void processErrorCode(int nErrorCode) cMtkdIO
{ W;,Jte<'Nm
System.err.println("Error Code : " + nErrorCode); KcY 2lTvx
} jaNkWTm:
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//停止文件下载 xe%+Yb]
public void siteStop() L,\ Yj
{ 9 ?h)U|J?G
bStop = true; ?p6+?\H
for(int i=0;i<nStartPos.length;i++) 8Zwq:lV Q
fileSplitterFetch.splitterStop(); dG6Mo76
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} ZW*"Kok
} W;u~}k<
//负责部分文件的抓取 *I>1O*
**FileSplitterFetch.java R]L7?=
*/ >Rx^@yQ!+z
package NetFox; 6%O"
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import java.io.*; ZJI|762,
import java.net.*; V.:imj
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public class FileSplitterFetch extends Thread { v{&cgod
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String sURL; //File URL Ql#:Rx>b
long nStartPos; //File Snippet Start Position 6
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long nEndPos; //File Snippet End Position HJoPk'p%
int nThreadID; //Thread's ID .:$%3#N$(Y
boolean bDownOver = false; //Downing is over /__we[$E
boolean bStop = false; //Stop identical Q9?/)&3Bu
FileAccessI fileAccessI = null; //File Access interface wcB-)Ra
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Hza{"I*^
{ ZZ?=^g
this.sURL = sURL; )2u=U9
this.nStartPos = nStart; n16,u$|
this.nEndPos = nEnd; z8jQaI]j
nThreadID = id; R\1#)3e0
fileAccessI = new FileAccessI(sName,nStartPos);//定位 f;
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} g]z,*d
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public void run() vsHY; [
{ gmy_ZVU'
while(nStartPos < nEndPos && !bStop) >\3=h8zw
{ WX]kez{<uP
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try{ gx@b|rj;
URL url = new URL(sURL); jA<v<oV
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ZrXvR`bsw
httpConnection.setRequestProperty("User-Agent","NetFox"); Ah)_mxK
String sProperty = "bytes="+nStartPos+"-"; .B_)w:oF
httpConnection.setRequestProperty("RANGE",sProperty); 3($%A GKJ
Utility.log(sProperty); :Y~fPke
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InputStream input = httpConnection.getInputStream(); ;' YM@n
//logResponseHead(httpConnection); ZGe+w](
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byte[] b = new byte[1024]; b78'yM&
int nRead; L:%;
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while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) $kvF]|<bu
{ _~| j~QE]
nStartPos += fileAccessI.write(b,0,nRead); q2Ax-#
//if(nThreadID == 1) a~DR$^m
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); N-4LdC
} P ;PS+S9
0;} 9XZ
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Utility.log("Thread " + nThreadID + " is over!"); nW!rM($q
bDownOver = true; |:L<Ko
//nPos = fileAccessI.write (b,0,nRead); (,[m}Qb?!
} v/}M_E
catch(Exception e){e.printStackTrace ();} wQlK[F]!>
} JrQ*.lJj
} G*3O5m
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//打印回应的头信息 DNq=|?qn]
public void logResponseHead(HttpURLConnection con) w<.{(1:v
{ `oXUVr
for(int i=1;;i++) G@BF<e{
{ +\?#8U/k
String header=con.getHeaderFieldKey(i); .~4%TsBaY
if(header!=null) w J/k\
//responseHeaders.put(header,httpConnection.getHeaderField(header)); n*{e0,gp`
Utility.log(header+" : "+con.getHeaderField(header)); M)!8`]
else C>4y<