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**SiteFileFetch.java Gx/Oi)&/
*/ ~!d\^Z^i
package NetFox; `Y$4 H,8L
import java.io.*; GR_-9}jQP
import java.net.*; (mpNcOY<D
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public class SiteFileFetch extends Thread { x=P\qjSa
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SiteInfoBean siteInfoBean = null; //文件信息Bean 97*p+T<yp
long[] nStartPos; //开始位置 &DX! f
long[] nEndPos; //结束位置 ~TD0zAA&
FileSplitterFetch[] fileSplitterFetch; //子线程对象 <)H9V-5aZ
long nFileLength; //文件长度 ~qKY) "gG
boolean bFirst = true; //是否第一次取文件 'n3uu1C
boolean bStop = false; //停止标志 %J?xRv!
File tmpFile; //文件下载的临时信息 Ffz,J6b
DataOutputStream output; //输出到文件的输出流 JX;G<lev
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) )Nw8O{\
public SiteFileFetch(SiteInfoBean bean) throws IOException YK'<NE3 4
{ n b?lTX~
siteInfoBean = bean; .|70;
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); |0b`fOS
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); i[3'ec3
if(tmpFile.exists ()) kgP0x-Ap
{ aB&&YlR=n<
bFirst = false; f}P3O3Yv&
read_nPos(); !*N@ZL&X
} 4Z&lYLq;
else G5 WVr$
{ gR;i(81U
nStartPos = new long[bean.getNSplitter()]; r`d4e,(
nEndPos = new long[bean.getNSplitter()]; \ ~$#1D1f
} :4/3q|cn
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public void run() *.t7G
{ .W!i7
//获得文件长度 ;?p>e'
//分割文件 m-#2n?
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//实例FileSplitterFetch VU3upy<
//启动FileSplitterFetch线程 `Ggbi4),
//等待子线程返回 +=</&Tm
try{ hRhe& ,v
if(bFirst) h*](a_0
{ x'<X!gw
nFileLength = getFileSize(); /y}xX
if(nFileLength == -1) oap4rHk}
{ q@8*Xa >
System.err.println("File Length is not known!"); e(t\g^X
} `X&gE,Ii
else if(nFileLength == -2) A3/k@S-R2
{ 2P0*NQ
System.err.println("File is not access!"); eeB{c.#
} ZUd-<y
else u'BaKWPS
{ yY q,*<G
for(int i=0;i<nStartPos.length;i++) [{,1=AB
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); o>pJPV
} SwMc
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for(int i=0;i<nEndPos.length-1;i++)
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nEndPos = nStartPos[i+1]; vr=#3>
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nEndPos[nEndPos.length-1] = nFileLength; ( a#BV}=
} wFZP,fQ9l
} &tj!*k'
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//启动子线程 _oeS Uzq.
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; G4"F+%.
for(int i=0;i<nStartPos.length;i++) 5r^(P
{ Cw&KVw*
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), G"A#Q"
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), nBYZ}L q
nStartPos,nEndPos,i); 6Z"X}L,*
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); uwGc@xOgg,
fileSplitterFetch.start(); zdam^o
} tKXIk9e
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), *s3/!K
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 7@W>E;go
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", X"eYK/7
nEndPos = " + nFileLength); {+>-7
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// fileSplitterFetch[nPos.length-1].start(); r9?Mw06Wc5
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//等待子线程结束 AA>P`C$&M
//int count = 0; 2D5StCF$O
//是否结束while循环 La[V$+Y
boolean breakWhile = false; [Y `W
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while(!bStop) 7b+6%fV
{ ?}Y]|c^W
write_nPos(); YN5rml'-
Utility.sleep(500); pd$[8Rmj_
breakWhile = true; a d\ot#V
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for(int i=0;i<nStartPos.length;i++) ,PDQzJY
{ MF'JeM;H
if(!fileSplitterFetch.bDownOver) 8 LCb+^
{ kyV8K#}%8
breakWhile = false; "#g}ve,
break; E!F^H^~$8
} &UFZS94@r
} ~wdGd+ez
if(breakWhile) cU
break; {_*yGK48n
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//count++;
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//if(count>4) c &c@M$
// siteStop(); |DwZ{(R"W
} #w=~lq)9
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System.err.println("文件下载结束!"); [nh>vqum
} m]&SN z=
catch(Exception e){e.printStackTrace ();} o2ECG`^b
} B33\?Yj)
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//获得文件长度 s>c=c-SP.
public long getFileSize() k}rbim
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int nFileLength = -1; Vjpy~iP4B
try{ n=q76W\
URL url = new URL(siteInfoBean.getSSiteURL()); 7xR\kL.,
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); G#$-1"!`
httpConnection.setRequestProperty("User-Agent","NetFox"); _yT Ed"$
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int responseCode=httpConnection.getResponseCode(); GLODVcjf
if(responseCode>=400) q,%st~
{ 1Z&(6cDY8M
processErrorCode(responseCode); TcoB,Kdce
return -2; //-2 represent access is error glw+l'@
} Ho]su?
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String sHeader; W@esITr
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for(int i=1;;i++) M3au{6y
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); T> p&$]OG
//Utility.log(in.readLine()); hqdDm
sHeader=httpConnection.getHeaderFieldKey(i); 1 -b_~DF
if(sHeader!=null) $pz/?>!
{ [N'h%1]\
if(sHeader.equals("Content-Length")) R@2X3s:
{ 1E$|~
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); wgA_38To
break; y)<q/
} 2A!FDr~cdT
} [-x7_=E#
else 5IG-~jzCLb
break; (V@HR9?W)
} 4&iCht
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} Z30A{6}
catch(IOException e){e.printStackTrace ();} "wc<B4"
catch(Exception e){e.printStackTrace ();} tl>7^hH
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Utility.log(nFileLength); i-&yH
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return nFileLength; q cno^8R
} LH6vLuf
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//保存下载信息(文件指针位置) >R=|Wo`Ri
private void write_nPos() wKHBAW[i]
{ fXB0j;A
try{ `F6C-
output = new DataOutputStream(new FileOutputStream(tmpFile)); p b,. r
output.writeInt(nStartPos.length); :v 4]D4\o
for(int i=0;i<nStartPos.length;i++) IRbfNq^:
{ WF"k[2
// output.writeLong(nPos); DV{=n C
output.writeLong(fileSplitterFetch.nStartPos); ?X;RLpEc|A
output.writeLong(fileSplitterFetch.nEndPos); [00m/fT6
} $od7;%
output.close(); %XTI-B/K
} x)VJFuqy
catch(IOException e){e.printStackTrace ();} =\d?'dII:
catch(Exception e){e.printStackTrace ();} Xm&L
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} \`"ht
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//读取保存的下载信息(文件指针位置) {>;R?TG]$
private void read_nPos() 1 {)Q[#l
{ 92-I~
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try{ rLT!To
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ?%kV?eu'
int nCount = input.readInt(); |7Kbpj
nStartPos = new long[nCount]; S[QrS7
nEndPos = new long[nCount]; I2DpRMy
for(int i=0;i<nStartPos.length;i++) J8~haim
{ 9>$p
nStartPos = input.readLong(); $ulOp;~A%
nEndPos = input.readLong(); L=h'Qgk%
} -^wl>}#*T3
input.close(); :H[6Lg\*
} Aa]"
catch(IOException e){e.printStackTrace ();} -.3w^D"l
catch(Exception e){e.printStackTrace ();} "ITIhnE
} P>6{&(
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private void processErrorCode(int nErrorCode) RT5T1K08I
{ !%>7Dw(kt
System.err.println("Error Code : " + nErrorCode); bN88ua}k{
} iR0y"Cii
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//停止文件下载 +^<](z
public void siteStop() BluVmM3Vj
{ |D.ND%K&
bStop = true; c:g'.'/*
for(int i=0;i<nStartPos.length;i++) 8i,K~Bu=
fileSplitterFetch.splitterStop(); kNL\m[W8$
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} Xx(T">]vJ
} 3BLq CZ
//负责部分文件的抓取 M@ZI\
**FileSplitterFetch.java KG5>]_GH
*/ ]s748+
package NetFox; lHIM}~#;nd
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import java.io.*; :j`sr
import java.net.*; ~v"L!=~G;a
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public class FileSplitterFetch extends Thread { -`t^7pr
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String sURL; //File URL 2:=
long nStartPos; //File Snippet Start Position ,v&(Y Od
long nEndPos; //File Snippet End Position 4Z,!zFS$`
int nThreadID; //Thread's ID _-F s#f8
boolean bDownOver = false; //Downing is over o8vug$=Z
boolean bStop = false; //Stop identical x3krbUlx
FileAccessI fileAccessI = null; //File Access interface 4H<lm*!^
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException a@*\o+Su
{ Qw)c$93
this.sURL = sURL; \^%}M!tan
this.nStartPos = nStart; <