/* .umN>/o[
**SiteFileFetch.java ge ]Z5E(1
*/ z
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package NetFox; zHD8\*
import java.io.*; ETm:KbS
import java.net.*;
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public class SiteFileFetch extends Thread {
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SiteInfoBean siteInfoBean = null; //文件信息Bean w>4( hGO
long[] nStartPos; //开始位置 ^ f[^.k$3d
long[] nEndPos; //结束位置 y/>Nx7C0=2
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ~m4LL[
long nFileLength; //文件长度 *rVI[kL
boolean bFirst = true; //是否第一次取文件 {S`Rr/E|%
boolean bStop = false; //停止标志 N}Or+:"O:q
File tmpFile; //文件下载的临时信息 NNBT.k3)
DataOutputStream output; //输出到文件的输出流 x@*?~1ai
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) G_}oI|B
public SiteFileFetch(SiteInfoBean bean) throws IOException 44pVZ5c
{ AZ
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siteInfoBean = bean; ,xutI
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); L7"<a2J
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); C'PHbo:
if(tmpFile.exists ()) ab[V->>%
{ s$~H{za
bFirst = false; `)NTJc$):
read_nPos(); 65GC7 >[
} G+tzp&G@
else (!a\23
{ jGYl*EBx
nStartPos = new long[bean.getNSplitter()]; ^97[(89G9
nEndPos = new long[bean.getNSplitter()]; Ky*xAx:
} ,=2)1I]
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} x[R?hS,0t
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public void run() 212 =+k
{ ]UrlFiR
//获得文件长度 GS*_m4.Ry6
//分割文件 G+WCE*
//实例FileSplitterFetch OqX+R4S
//启动FileSplitterFetch线程 fO837
//等待子线程返回 Q'[~$~&`
try{ w$`u_P|@E:
if(bFirst) I.o3Old
{ ltHuN;C\
nFileLength = getFileSize(); n.A*(@noe
if(nFileLength == -1) xOZvQ\%
{ xM>dv5<E
System.err.println("File Length is not known!"); _he~Y2zFz
} xEB4oQ5
else if(nFileLength == -2) ]0pI6"
{ DvTbt?i[
System.err.println("File is not access!");
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} \rCdsN 2H
else n&8N`!^o
{ =|d5V% mK
for(int i=0;i<nStartPos.length;i++) p+2uK|T9
{ }'\M}YM
nStartPos = (long)(i*(nFileLength/nStartPos.length)); E8o9ufj3
} 7KtgR=-Lb
for(int i=0;i<nEndPos.length-1;i++) 4-\4G"4
{ +EZr@
nEndPos = nStartPos[i+1]; >P6U0
} ! &V,+}>)
nEndPos[nEndPos.length-1] = nFileLength; VKi3z%kwK
} XV!UeBq
} !)c0
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//启动子线程 ik0w\*
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 2Mu(GUe;
for(int i=0;i<nStartPos.length;i++) eoPoGC
{ mW)"~sA
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), QEEX|WM
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 'YEiT#+/
nStartPos,nEndPos,i); x_EU.924uY
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); &0mhO+g
fileSplitterFetch.start(); *gI9CVfQl
} 6uFGq)4p@
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ND5E`Va5R
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); JM*rPzp
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", *JaFt@ x
nEndPos = " + nFileLength); =PoPp
// fileSplitterFetch[nPos.length-1].start(); #elaz8 5
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//等待子线程结束 *8 ]
//int count = 0; b;I!CyD
//是否结束while循环 Bc#6mO-
boolean breakWhile = false; [92bGR{
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while(!bStop) BimM)4g
{ U3w*z6OG
write_nPos(); r3.v ^
Utility.sleep(500); wD[qE
breakWhile = true; hpticW|
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for(int i=0;i<nStartPos.length;i++) & l~=c2
{ 7M9s}b%?
if(!fileSplitterFetch.bDownOver) 3*b!]^d:D
{ &S#bLE
breakWhile = false; $w<~W1\:
break; }Z\+Qc<<
} g/,O51f'
} J15$P8J
if(breakWhile) WTh|7&
break; SiJX5ydz
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//count++; /XW,H0pR
//if(count>4) ;"GI~p2~7
// siteStop(); 4U:+iumy2
} Y'%_--
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System.err.println("文件下载结束!"); 9a_(_g>S
} /t?(IcP5
catch(Exception e){e.printStackTrace ();} =j~}];I
} or]s
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//获得文件长度 |&%l @X6
public long getFileSize() %u|qAF2uS
{ ~LzTqMHM
int nFileLength = -1; k)USLA
try{ r,dxW5v.
URL url = new URL(siteInfoBean.getSSiteURL()); 8%#uZG\}
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); BF6H_g
httpConnection.setRequestProperty("User-Agent","NetFox"); ihhnB
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int responseCode=httpConnection.getResponseCode(); }c,}+{q
if(responseCode>=400) P.1iuZ "w
{ I!Za2?
processErrorCode(responseCode); `P4qEsZE>`
return -2; //-2 represent access is error gf2w@CVF>=
} _E[{7"3}
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String sHeader; W.,J'
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for(int i=1;;i++) `\P :rn95;
{ Y<.F/iaH
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); D 2Go,1
//Utility.log(in.readLine()); _>:g&pS/
sHeader=httpConnection.getHeaderFieldKey(i); tdr*>WL
if(sHeader!=null) vR~*r6hX8
{ $Y0bjS2J
if(sHeader.equals("Content-Length")) M+^K,
{ #(*WxVE
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); /ADxHw`k
break; x{*!"a>
} S8vmXlD
} C 127he
else {nOK*7+"
break; T[q-$8U
} r5iO%JFg
} @#H{nj
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catch(IOException e){e.printStackTrace ();} v981nJ>w,
catch(Exception e){e.printStackTrace ();} 25ZGuM
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Utility.log(nFileLength); D+o.9I/{
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return nFileLength; {Rj' =%h
} X-{:.9
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//保存下载信息(文件指针位置) n"K7@[d
private void write_nPos() Z#MODf0H@
{ 'HcDl@E
try{ JN KZ'9
output = new DataOutputStream(new FileOutputStream(tmpFile)); F5<{-{Ky
output.writeInt(nStartPos.length); u\.sS|$
for(int i=0;i<nStartPos.length;i++) f|^f^Hu:{
{ NxX1_d
// output.writeLong(nPos); N[+dX_h
output.writeLong(fileSplitterFetch.nStartPos); Gj_b GqF8}
output.writeLong(fileSplitterFetch.nEndPos); D[#\Y+N
} MM8)yCI
output.close(); ,m b3H
} "^D6%I#T
catch(IOException e){e.printStackTrace ();} c\b>4 &n
catch(Exception e){e.printStackTrace ();} !Z'm@,+
} +li^0+3-'
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//读取保存的下载信息(文件指针位置) !yI)3;$*
private void read_nPos() gq@."wHU
{ N8{>M,
try{ _5LlL#)
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); F_Pd\Aq8
int nCount = input.readInt(); X*yl%V
nStartPos = new long[nCount]; z0W+4meoH
nEndPos = new long[nCount]; 4 z`5W,
for(int i=0;i<nStartPos.length;i++) YWZF*,4
{ h B+ t
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nStartPos = input.readLong(); |}|;OG
nEndPos = input.readLong(); SA7,]&Zb