/* 8p5'}Lq
**SiteFileFetch.java M}nalr+#
*/ ]-}a{z
package NetFox; ;zCHEz
import java.io.*; >|iy= Zn%'
import java.net.*; -"cN9RF
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public class SiteFileFetch extends Thread { t
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SiteInfoBean siteInfoBean = null; //文件信息Bean \;?\@vo<
long[] nStartPos; //开始位置 )T4L^^`
long[] nEndPos; //结束位置 -
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FileSplitterFetch[] fileSplitterFetch; //子线程对象 c3}}cFe
long nFileLength; //文件长度 )ld7^G
boolean bFirst = true; //是否第一次取文件 9:Y:Vx
boolean bStop = false; //停止标志 Ym6ec|9;
File tmpFile; //文件下载的临时信息 +p[~hM6?
DataOutputStream output; //输出到文件的输出流 T2->
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) aQG#bh [
public SiteFileFetch(SiteInfoBean bean) throws IOException ]u,~/Gy
{ 9F-k:hD |
siteInfoBean = bean; GmHsO/
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); [a`i{(!
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ex=~l O
if(tmpFile.exists ()) OP&[5X+Y
{ v]J# SlF
bFirst = false; 7*5ctc!dG
read_nPos(); yjr@v!o
} UQ8x#(`ak
else K@i*Nl
{ g\l;>
nStartPos = new long[bean.getNSplitter()]; "a
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nEndPos = new long[bean.getNSplitter()]; &-*nr/xT
} $W?XxgkB?
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public void run() ZFON]$Zk
{ Lm?*p>\Q
//获得文件长度 VMWg:=~$
//分割文件 X2`>@GR/>
//实例FileSplitterFetch A!D:Kc3
//启动FileSplitterFetch线程 ]Rye AJ3
//等待子线程返回 X\x9CA
try{ SSXS
if(bFirst) _E;Y
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{ E1C_d'
nFileLength = getFileSize(); 5\S7Va;W
if(nFileLength == -1) <C77_t
{ k)s 7Ev*
System.err.println("File Length is not known!"); _Pkh`}W:
} Q8x{V_Pot
else if(nFileLength == -2) 4I*Mc%dD
{ M@ kZ(Rkv
System.err.println("File is not access!"); j 7URg>i0
} }#8uXA
else uE j6A
{ kKM%
for(int i=0;i<nStartPos.length;i++) ^0Q*o1W
{ \DqxS=o;
nStartPos = (long)(i*(nFileLength/nStartPos.length)); ?U08A{ c
} X t =bc
for(int i=0;i<nEndPos.length-1;i++) E5 oD|'=WA
{ kDq%Y[6Z
nEndPos = nStartPos[i+1]; a1SOC=.M;
} v|@n8ED|@K
nEndPos[nEndPos.length-1] = nFileLength; BA-nxR
} wF8\
} +
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//启动子线程 fR4l4 GU?)
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; &|}IBu :T
for(int i=0;i<nStartPos.length;i++) JF%=Bc $C
{ Ts .Zl{B
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ATM:As:<@
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), /\cu!yiX
nStartPos,nEndPos,i); ==1/N{{R
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); *t{c}Y&@
fileSplitterFetch.start(); O/9%"m:i
} WgJAr73
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// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), * g4Cy8$
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); \.P}`Bpa
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", %8CT -mQ
nEndPos = " + nFileLength); sLdUrD%
// fileSplitterFetch[nPos.length-1].start(); 4>VZk^%b#
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//等待子线程结束 xg,]M/J
//int count = 0; MW$H/:3
//是否结束while循环 gkML .u
boolean breakWhile = false; 6'Yn|A
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while(!bStop) }u_EXP8M
{ OI_/7@L
write_nPos(); *C@[5#CA2z
Utility.sleep(500); * \o$-6<
breakWhile = true; yC0f/O
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for(int i=0;i<nStartPos.length;i++) 0*Km}?;0-
{ {IPn\Bka
if(!fileSplitterFetch.bDownOver) s i"`
{ e*2&s5 #RT
breakWhile = false; 0uIV6LI
break; w}W@M,.^
} ^UvK~5tBV
} r` `iC5Ii
if(breakWhile) rw8J:?0x
break; frmqBC VJ:
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//count++; r($_>TS&"
//if(count>4) g)9JO6]
// siteStop(); 9VUm=Z#`
} I*W9VhIOV
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System.err.println("文件下载结束!"); YR|(;B
} NT;x1
catch(Exception e){e.printStackTrace ();} iijd$Tv
} F8S~wW=\w
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//获得文件长度 ) _9e@~,
public long getFileSize() DO1 JPeIi
{ D]pK=247
int nFileLength = -1; Tw`c6^%^y
try{ s3Krob`C5
URL url = new URL(siteInfoBean.getSSiteURL()); g]Xzio&w
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 7~kpRa@\P
httpConnection.setRequestProperty("User-Agent","NetFox"); xxLgC;>[
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int responseCode=httpConnection.getResponseCode(); $kkp*3{ot
if(responseCode>=400) GP{$v:RG
{ hy$MV3LP
processErrorCode(responseCode); ol?z<53X]
return -2; //-2 represent access is error ,5eH2W
} Q{qj
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String sHeader; N{q5E,}
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for(int i=1;;i++) TJ?}5h5
{ e@L+z
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Kcsje_I-M
//Utility.log(in.readLine()); F2z^7n.S
sHeader=httpConnection.getHeaderFieldKey(i); 4AZlr*U
if(sHeader!=null) E{wVf_K
{ JBeC\ \QX
if(sHeader.equals("Content-Length")) 96}/;e]@
{ p#^L
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); I]~xs0$4#
break; H1s{JJAM>i
} )n5]+VTZ5
} |>j=#2
else *h@nAB\3
break; #U"\v7C{n
} dm8veKW'l
} j MW|B
catch(IOException e){e.printStackTrace ();} #y-OkGS
^
catch(Exception e){e.printStackTrace ();} unSF;S<
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Utility.log(nFileLength); %/1`"M5ko
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return nFileLength; K*7*`6iU
} \8ulX>]
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//保存下载信息(文件指针位置) Z TjlGU `
private void write_nPos() )K8JDP
{ '9$xOrv
try{ >Q[]i4*A
output = new DataOutputStream(new FileOutputStream(tmpFile)); ;6fkG/T
output.writeInt(nStartPos.length); `S;pn+5
for(int i=0;i<nStartPos.length;i++) -S)HB$8
{ {D1=TTr^
// output.writeLong(nPos); /bt@HFL|`
output.writeLong(fileSplitterFetch.nStartPos); @<>](4D
output.writeLong(fileSplitterFetch.nEndPos); ~qFi0<-M
} `9zP{p
output.close(); <%qbU-
} 5IVASqYp
catch(IOException e){e.printStackTrace ();} dkG-Yz~
catch(Exception e){e.printStackTrace ();} J@!Sf7k42
} 4&$hBn=!
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//读取保存的下载信息(文件指针位置) {BJ[h
private void read_nPos() gbXzD`WQ
{ _4[kg)#+
try{ w y:.
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); N@tzYD|hA
int nCount = input.readInt(); xqbI~jV#
nStartPos = new long[nCount]; /x0zZ+}V
nEndPos = new long[nCount]; ^hY<avi6s
for(int i=0;i<nStartPos.length;i++) Pg*ZQE[ME8
{ c9r2kc3cy{
nStartPos = input.readLong(); 4;w_o9o
nEndPos = input.readLong(); ]#3=GFs/
} owmA]f
input.close(); 2MtaOG2l&q
} uh:
catch(IOException e){e.printStackTrace ();} a l#yc
catch(Exception e){e.printStackTrace ();} \iu2rat^
} M#F;eK2pf
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private void processErrorCode(int nErrorCode) K<