/* 5p7i9"tgn
**SiteFileFetch.java wO]H+t
*/ 0\1g-kc!v
package NetFox; S""F58H n
import java.io.*; bhKe"#m|S
import java.net.*; wEl/s P
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public class SiteFileFetch extends Thread { `@&WELFv{
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SiteInfoBean siteInfoBean = null; //文件信息Bean %YG[?"P'
long[] nStartPos; //开始位置 _]< Tv3]RK
long[] nEndPos; //结束位置 1,n\Osd
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ] `;Fc8$
long nFileLength; //文件长度 OFZo"XtF
boolean bFirst = true; //是否第一次取文件 *b`1+~p_2
boolean bStop = false; //停止标志 &<(&u`S
File tmpFile; //文件下载的临时信息 'qoaMJxN`
DataOutputStream output; //输出到文件的输出流 <I{Yyl^
u} [.*e
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) CSzu$Hnq
public SiteFileFetch(SiteInfoBean bean) throws IOException -c[fg+L9
{ ! ^aJS'aq
siteInfoBean = bean; cmp@Ow"c
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Vzh\1cF
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); g]?QV2bX6
if(tmpFile.exists ()) Ki[&DvW:
{ X|Nb81M
bFirst = false; LO,:k+&A+
read_nPos(); nKch:g
} ?0d#O_la3
else }gQnr;lv
{ $F@ ,,*
nStartPos = new long[bean.getNSplitter()]; 5"L.C32
nEndPos = new long[bean.getNSplitter()]; s[t?At->
} w*7wSP
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public void run() !dwa. lZ&X
{ WFfn:WSWU
//获得文件长度 >%c>R'~h
//分割文件 l(Uwci
//实例FileSplitterFetch rrs0|=
//启动FileSplitterFetch线程 pvdCiYo1r
//等待子线程返回 50Ov>(f@7
try{ C|S~>4`
if(bFirst)
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{ N}'2GBqfU4
nFileLength = getFileSize(); I$ ?.9&.&
if(nFileLength == -1) =<r1sqf
{ XJA];9^
System.err.println("File Length is not known!"); Z1U@xQj
} I(qFIV+HR
else if(nFileLength == -2) CE|rn8MB
{ Lr*\LP6jx3
System.err.println("File is not access!");
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} .|KBQMI
else /Uni6O)oc
{
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for(int i=0;i<nStartPos.length;i++) eI/5foA
{ [I(
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); ;IR.6k$;
} ,b t
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for(int i=0;i<nEndPos.length-1;i++) rb]?"lizi
{ |}o3EX
nEndPos = nStartPos[i+1]; x-~=@oiv
} Am"&ApK
nEndPos[nEndPos.length-1] = nFileLength; 5wC,:c[H7
} }`+9ie7]/
} -7VQ{nC
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//启动子线程 ^MvBW6#1
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; !d1a9los
for(int i=0;i<nStartPos.length;i++) _W>xFBy
{ HnKXO
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), QVkrhwp
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), e. R9:
nStartPos,nEndPos,i); ggy9euWV
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); CsN^u H
fileSplitterFetch.start(); cT
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} vU9:`@beu
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), L fZF
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ;]W@W1)$
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", rXq{WS`
nEndPos = " + nFileLength); EvF[h:C2
// fileSplitterFetch[nPos.length-1].start(); v4,Dt
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//等待子线程结束 H`rd bE
//int count = 0; aAgQ^LY
//是否结束while循环 !1/F71l DX
boolean breakWhile = false; +9B .}t#
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while(!bStop) k +Cwnp
{ &"^U=f@v
write_nPos(); sEi9<$~R@0
Utility.sleep(500); ZKai*q4?
breakWhile = true; ZWQ/BgKB
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for(int i=0;i<nStartPos.length;i++) ^ U~QQ
{ 8k;il54#
if(!fileSplitterFetch.bDownOver) #gXxBM
{ -!
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breakWhile = false; rl]K:8*
break; e/}4Pt
} 5t-,5
} S:1g(f*85
if(breakWhile) ,(NN)Oj
break; zpZfsn!
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//count++; IRTD(7"oyp
//if(count>4) wZWAx
// siteStop(); pj7v{H +
} 1:J+`mzpl
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System.err.println("文件下载结束!"); )W&{OMr
} ~ 7<M6F
catch(Exception e){e.printStackTrace ();} I+
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} OsKtxtLO
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//获得文件长度 `@#rAW D
public long getFileSize() b7B|$T,
{ YLuf2ja}X
int nFileLength = -1; ',/2J0_
try{ 2OQ\ z;s
URL url = new URL(siteInfoBean.getSSiteURL()); |#'n VN.;
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); l z-I[*bA
httpConnection.setRequestProperty("User-Agent","NetFox"); }Eh &'
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int responseCode=httpConnection.getResponseCode(); hw(\3h()
if(responseCode>=400) B<0Kl.V
{ Sb(OG 6
processErrorCode(responseCode); n#@ Qd!uzM
return -2; //-2 represent access is error ;%;||?'v
} kpxGC,I^*.
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String sHeader; m=SI *V
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for(int i=1;;i++) d</F6aM\
{ GP^.h kVs
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 'by+hXk
//Utility.log(in.readLine()); 4u+0 )<
sHeader=httpConnection.getHeaderFieldKey(i); uqLP$At
if(sHeader!=null) @w`wJ*I4,
{ _*MK"
if(sHeader.equals("Content-Length")) {`,)<R>}
{ dqs~K7O^E
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); eze%RjO}
break; pdvnpzj
} W/AF
} eW;3ko E
else e['<.Yf+
break; }1W@
} 8KYI Hw
} 8QoxU"
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catch(IOException e){e.printStackTrace ();} 52zE -SY
catch(Exception e){e.printStackTrace ();} i1!1'T8
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Utility.log(nFileLength); 2TNK
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return nFileLength; : ^("L,AF
} M:b#">M
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//保存下载信息(文件指针位置) }>d
private void write_nPos() }}i'8
{ {M5t)-
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output = new DataOutputStream(new FileOutputStream(tmpFile)); ~f[ Y;
output.writeInt(nStartPos.length); k5Fj"U
for(int i=0;i<nStartPos.length;i++) igW* {)h3
{ -%@ah:iJ
// output.writeLong(nPos); &*%x]fQ@
output.writeLong(fileSplitterFetch.nStartPos); x~vNUyEN)
output.writeLong(fileSplitterFetch.nEndPos); GEA1y^b6"
} QXN_ ?E,g/
output.close(); X-(4/T+v
} JO+tY[q
catch(IOException e){e.printStackTrace ();} &T~X`{V]`
catch(Exception e){e.printStackTrace ();} @OkoT:
} oLh ,F"nB
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//读取保存的下载信息(文件指针位置) 1^^8,.'
private void read_nPos() v"W*@7<`S
{ 6(rN(C
try{ T7^;!;i`X
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); [
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int nCount = input.readInt(); vg1JN"S[
nStartPos = new long[nCount]; hlB\Xt
nEndPos = new long[nCount]; (+[%^96
for(int i=0;i<nStartPos.length;i++) WFh.oe8
{ (D) KU9B>
nStartPos = input.readLong(); $`55 E(
nEndPos = input.readLong(); _p*8ke
} N)GHQlgH
input.close(); G(TFv\`vH
} 9$HBKcO
catch(IOException e){e.printStackTrace ();} )c{>@WM~
catch(Exception e){e.printStackTrace ();} rpK&OR/
} yV )fJ_
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private void processErrorCode(int nErrorCode) Z|%h-~
{ _X~O6e-!
System.err.println("Error Code : " + nErrorCode); #-<Go'yF
} 4&sf{tI
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//停止文件下载 9`*Eeb>
public void siteStop() H8FvI"J
{ $_E.D>5^%7
bStop = true; k#Sr; "
for(int i=0;i<nStartPos.length;i++) /HpM17
fileSplitterFetch.splitterStop(); +tT"
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} Q(nTL WW
} q.`<q
//负责部分文件的抓取 $Gv@lZ@=
**FileSplitterFetch.java >kK@tJn
*/ eIY`RMo
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package NetFox; |HD>m'e
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import java.io.*; ]s AuL!
import java.net.*; (.cA'f?h
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public class FileSplitterFetch extends Thread { _ZK^JS
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String sURL; //File URL k`8O/J
long nStartPos; //File Snippet Start Position t4_yp_
long nEndPos; //File Snippet End Position ?J2A1iuq3
int nThreadID; //Thread's ID <&l$xn
boolean bDownOver = false; //Downing is over MmN{f~Kq9
boolean bStop = false; //Stop identical #0aBQ+_8H
FileAccessI fileAccessI = null; //File Access interface eTvWkpK+
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException EGUlLqP6e
{ 7,+eG">0
this.sURL = sURL; x?{UWh%
this.nStartPos = nStart; oxlor,lw/
this.nEndPos = nEnd; IDH~nMz
nThreadID = id; 6I
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fileAccessI = new FileAccessI(sName,nStartPos);//定位 ES&u*X:
} ly17FLJ].
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public void run() )bOfs*S
{ z/1$G"
while(nStartPos < nEndPos && !bStop) =#Sw.N
{ C!*!n^qA
= 'o3 <}
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try{ FfJ;r'eGs
URL url = new URL(sURL); ?l/6DT>e
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Q:(mK* _
httpConnection.setRequestProperty("User-Agent","NetFox"); W/!P1M n
String sProperty = "bytes="+nStartPos+"-"; djOjd,
httpConnection.setRequestProperty("RANGE",sProperty); 3y}E*QE
Utility.log(sProperty); d^aVP
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InputStream input = httpConnection.getInputStream(); 51q|-d
//logResponseHead(httpConnection); u]IbTJ'
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byte[] b = new byte[1024]; ,*XB11P
int nRead; v.-DXQq
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) >>P5 4|&
{ <u!cdYo@
nStartPos += fileAccessI.write(b,0,nRead); aZ4EcQ@-$]
//if(nThreadID == 1) +)sX8zb*gY
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); lA5Dag'
} n^4R]9U
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Utility.log("Thread " + nThreadID + " is over!"); p"ytt|H
bDownOver = true; p0@^1
//nPos = fileAccessI.write (b,0,nRead); GEWjQ;g
} v745FIy<
catch(Exception e){e.printStackTrace ();} {|?^@
} '[{<aEo
} ^HC6v;K
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//打印回应的头信息 AEyvljv
public void logResponseHead(HttpURLConnection con) /sA&}kX}E
{ UY<