/* kl0!*j
**SiteFileFetch.java dSD7(s!
*/ 7XZ5CX&
package NetFox; q8 j
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import java.io.*; FC' v= *
import java.net.*; 4K_ fN
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public class SiteFileFetch extends Thread { E3pnu.;U:_
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SiteInfoBean siteInfoBean = null; //文件信息Bean U]Iypl`l
long[] nStartPos; //开始位置 #].n0[
long[] nEndPos; //结束位置 :YL`GSl
FileSplitterFetch[] fileSplitterFetch; //子线程对象 iIOA5 4!o
long nFileLength; //文件长度 $6W o$c%
boolean bFirst = true; //是否第一次取文件 eXHk6[%[
boolean bStop = false; //停止标志 $ekB+
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File tmpFile; //文件下载的临时信息 HFJna2B`
DataOutputStream output; //输出到文件的输出流 C~16Jj:v
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) Q(P'4XCm
public SiteFileFetch(SiteInfoBean bean) throws IOException ^8,Y1r9`$
{ %i7bkdcwk
siteInfoBean = bean; )2@_V %
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); n*tT<
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); bCM&Fe0GM
if(tmpFile.exists ()) ogcEv>0
{ byj}36LN62
bFirst = false; 2>l
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read_nPos(); EhEUkZE3)
} CNC3">Dk~9
else @a AR99 M
{ B8+J0jdg6%
nStartPos = new long[bean.getNSplitter()]; I~LN)hqd o
nEndPos = new long[bean.getNSplitter()]; ^DL}J>F9G
} 5XSr K
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public void run() vwVK^B
{ }?"}R<F|M,
//获得文件长度 k
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//分割文件 (w31W[V'#
//实例FileSplitterFetch h28")c.pH=
//启动FileSplitterFetch线程 ZLsfF
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//等待子线程返回 =T73660
try{ ^Eu]i
if(bFirst) ao4"=My*G
{ \8Mn[G9TL
nFileLength = getFileSize(); mR3)$!
if(nFileLength == -1) w! J|KM
{ hu?Q,[+o
System.err.println("File Length is not known!"); 3j'A.S
} 3[R<JrO
else if(nFileLength == -2) |Ai/q6u
{ Y7WxV>E
System.err.println("File is not access!"); Rne#z2Ok
} 8nt3Sm
else XRZj+muTZ
{ -6 WjYJx
for(int i=0;i<nStartPos.length;i++) (mO{W
{ ?hqHTH:PU
nStartPos = (long)(i*(nFileLength/nStartPos.length)); nz{
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} |u r/6{Oj1
for(int i=0;i<nEndPos.length-1;i++) KpHt(>NR
{ =NHE_4/p
nEndPos = nStartPos[i+1]; 9Fo00"q
} 4?+K:e #F
nEndPos[nEndPos.length-1] = nFileLength; 75@!j[QL<
} [v@3|@
} 4Zz%vY
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//启动子线程 @uh^)6i]/
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; %7w=; ]ym
for(int i=0;i<nStartPos.length;i++) k#eH
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{ $|kq{@<
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), "_LDs(&
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), v|!u]!JM
nStartPos,nEndPos,i); {6*$ yLWK
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); :G.u{cw
fileSplitterFetch.start(); ;(&$Iw9X
} :B^YK].
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), lN(|EI
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); hgYi ,e
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 6o5NeKZ
nEndPos = " + nFileLength); oI\Lepl*
// fileSplitterFetch[nPos.length-1].start(); _GhP{C$
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//等待子线程结束 d}RU-uiW
//int count = 0; (Q]Ww_r~
//是否结束while循环 tPp9=e2[s
boolean breakWhile = false; l|kGp~
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while(!bStop) #QUQC2P(~
{ V=i/cI\
write_nPos(); 1Yk!R9.
Utility.sleep(500); x?"+Or.h
breakWhile = true; n 3eLIA{
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for(int i=0;i<nStartPos.length;i++) 9ZD>_a
{ whW%c8
if(!fileSplitterFetch.bDownOver) +=Y[RCXT
{ 3(oB[9]s
breakWhile = false; h5o6G1ur
break; wbpz,
} N,3 )`Vm
} v:IpZ;^
if(breakWhile) 1 u~Xk?
break; )MWbZAI
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//count++; _'mK=`>u
//if(count>4) ]as+gZ8
// siteStop(); Z~3
} y$K[ArqX
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System.err.println("文件下载结束!"); jmBsPSGIC
} &SW~4 {n:
catch(Exception e){e.printStackTrace ();} h( DmSW
} I_s* pT
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//获得文件长度 e9;5.m
public long getFileSize() K2qKkV@
{ p_B5fm7#6W
int nFileLength = -1; nu `R(2/
try{ ZA7b;{o [
URL url = new URL(siteInfoBean.getSSiteURL()); 3rj7]:Vr
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 8\S$iGd
httpConnection.setRequestProperty("User-Agent","NetFox"); [{q])P;
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int responseCode=httpConnection.getResponseCode(); @M*oq2U;
if(responseCode>=400) -`CE;
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processErrorCode(responseCode); ] 1s6=
return -2; //-2 represent access is error HE:]zH
} lNo]]a+_
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String sHeader; x3l~k Z(
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for(int i=1;;i++) 'd]t@[#
{ {XH3zMk[
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); /], 9N
//Utility.log(in.readLine()); 1nR\m+{
sHeader=httpConnection.getHeaderFieldKey(i); hz+c]K
if(sHeader!=null) -VvN1G6.x?
{ fuT Bh6w&
if(sHeader.equals("Content-Length")) /<k]mY cu
{ pB0 SCS*
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); +t8#rT ^B
break; K(AZD&D
} c#Qlr{ES
} xk7VuS*
else i,mZg+;w
break; Pp.]/;
} N_E)f
} ~!P&LZ
catch(IOException e){e.printStackTrace ();} yeLd,M/I
catch(Exception e){e.printStackTrace ();} ),lE8A{ H
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Utility.log(nFileLength); UlPhW~F)
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return nFileLength; NbK67p:
} SP;1XXlL
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//保存下载信息(文件指针位置) ri49r*_1
private void write_nPos() ;pqS|ayl
{ TiKfIv
try{ @xr}(.
output = new DataOutputStream(new FileOutputStream(tmpFile)); L0*f(H
output.writeInt(nStartPos.length); bUe6f,8,
for(int i=0;i<nStartPos.length;i++) 0GQKM~|H
{ Bqw/\Lxwlf
// output.writeLong(nPos); t\O#5mo
output.writeLong(fileSplitterFetch.nStartPos); @%8$k[
output.writeLong(fileSplitterFetch.nEndPos); 2tS,q_-=
} M
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output.close(); &X,6v
} j2oU1' b
catch(IOException e){e.printStackTrace ();} !.7m4mKzo
catch(Exception e){e.printStackTrace ();} [j?<&