/* rz]M}!>k
**SiteFileFetch.java HC/?o0
*/ /[#5<;
package NetFox; D./3,z
import java.io.*; 2&d|L|->
import java.net.*; P_Ni
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public class SiteFileFetch extends Thread { *-.,QpgTX
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SiteInfoBean siteInfoBean = null; //文件信息Bean ,G!mO,DX
long[] nStartPos; //开始位置 u<K{=94!e
long[] nEndPos; //结束位置 h\PybSW4s
FileSplitterFetch[] fileSplitterFetch; //子线程对象 rv;is=#1
long nFileLength; //文件长度 8u4Fag Q,
boolean bFirst = true; //是否第一次取文件 lko
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boolean bStop = false; //停止标志 $7'KcG
File tmpFile; //文件下载的临时信息 G>w+J'7
DataOutputStream output; //输出到文件的输出流 1QJB4|5R#
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) QPJz~;V2
public SiteFileFetch(SiteInfoBean bean) throws IOException cSWn4-B@l
{ LP:F'Q:<
siteInfoBean = bean; YB3?Ftgw
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); _omz74
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Ul%D}(,
if(tmpFile.exists ()) '(!U5j
{ ;iTZzmB
bFirst = false; );oE^3]f
read_nPos(); *ci%c^}V
} eL{6;.C
else 5;Q9Z1
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{ (|U|>@
nStartPos = new long[bean.getNSplitter()]; dId&tTMmC
nEndPos = new long[bean.getNSplitter()]; `sPH7^R
} ewORb
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} /w2jlu}yt
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public void run() qjI.Sr70
{ {axMS yp;
//获得文件长度 G+zIh}9
//分割文件 FCA]zR1
//实例FileSplitterFetch 2}jC%jR2
//启动FileSplitterFetch线程 xI(Y}>
//等待子线程返回 *#g[
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try{ Ft^+P*
if(bFirst) pIP^/H
{ N@G~+GCxL
nFileLength = getFileSize(); (7J (.EG2e
if(nFileLength == -1) G*\U'w4w|*
{ /j:fc?yv
System.err.println("File Length is not known!"); wC~LZSTt
} ]0@
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else if(nFileLength == -2) lz88//@gZ
{ b?deZ2"L#
System.err.println("File is not access!"); .U9A\$
} J'#R9NO<
else vD'YLn%Q
{ uPQrDr5
for(int i=0;i<nStartPos.length;i++) odNHyJS0
{ c3q @]|aI
nStartPos = (long)(i*(nFileLength/nStartPos.length)); [2Ot=t6]
} D;QV`Z%I
for(int i=0;i<nEndPos.length-1;i++) v!77dj 6I
{ 85 <%L:EC
nEndPos = nStartPos[i+1]; /Ym!%11`
} >P[BwL]
nEndPos[nEndPos.length-1] = nFileLength; :1,xs e
} wS}Rl}#Oh?
} =?s0.(;
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//启动子线程 $mLiEsJ
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; v7@O ,%
for(int i=0;i<nStartPos.length;i++) =VOl
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{ c?XqSK`',Z
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 0|D
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), e=Teq~K
nStartPos,nEndPos,i); $ Ov#^wfA
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); %^
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fileSplitterFetch.start(); ; 6*Ag#Z
} CyEEE2cV
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), TATH,Sz:x
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); FErKr)
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 3E]IEf
nEndPos = " + nFileLength); $G@^!(
// fileSplitterFetch[nPos.length-1].start(); 71inHg
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//等待子线程结束 19#A7
//int count = 0; HC\\w-`<
//是否结束while循环 k}$k6Sr"
boolean breakWhile = false; l5fF.A7TT
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while(!bStop) ~u+|NtF
{ ^#)M,.G^
write_nPos(); EaXDY<
Utility.sleep(500); ug.'OR
breakWhile = true; os~}5QJ
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for(int i=0;i<nStartPos.length;i++) IWD21lS
{ %2t#>}If!
if(!fileSplitterFetch.bDownOver) 2i_X{!0}
{ vhj^R5=
breakWhile = false; oq3{q
break; Ad]oM]
} k}r)I.Lp
} 9HJA:k*k|
if(breakWhile) 8w]>SEGFs
break; g{%2*{;i
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//count++; /aHx'TG
//if(count>4) h&$,mbEoI
// siteStop(); wc7F45l4
} *zn=l+c
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System.err.println("文件下载结束!"); @!zT+W&
} cA]Ch>]A%
catch(Exception e){e.printStackTrace ();} wc6v:,&
} Pu7cL
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//获得文件长度 qtLXdSc
public long getFileSize() jYi{[**
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int nFileLength = -1;
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try{ Q($aN-
URL url = new URL(siteInfoBean.getSSiteURL()); 2lm{: tS
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); *N|s+
httpConnection.setRequestProperty("User-Agent","NetFox"); y/}ENUGR
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int responseCode=httpConnection.getResponseCode(); b/g"ws_
if(responseCode>=400) l5bd);Ltq
{ ^vH3 -A;*
processErrorCode(responseCode); ?
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return -2; //-2 represent access is error j*05!j<'
} 8NS1* \z
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String sHeader; WCPl}7>
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for(int i=1;;i++) L_4ZxsIv
{ m&X6a C'[
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); oI6o$C
//Utility.log(in.readLine()); gQ=g,X4
sHeader=httpConnection.getHeaderFieldKey(i); QC\][I>
if(sHeader!=null) zkrcsc\Z~0
{ E?+MM0
if(sHeader.equals("Content-Length")) Q]]5\C.
{ &QQ8ut,;
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ;
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break; &^W91C?<6
} \dIQhF%%2
} r$Z_Kwe.|&
else _^)<d$R<
break; 6W abw:
} E-_Q3^
} /kY|PY
catch(IOException e){e.printStackTrace ();} @^';[P!
catch(Exception e){e.printStackTrace ();} 3_]<H<w
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Utility.log(nFileLength); s
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return nFileLength; rHWlv\+Nn
} pwvcH3l/r
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//保存下载信息(文件指针位置) Q< q&a8~
private void write_nPos() "x*5g*k
{ 5z>kz/uxW
try{ k'K&GF1B
output = new DataOutputStream(new FileOutputStream(tmpFile)); '`*{ig
output.writeInt(nStartPos.length); Pkbx/\
for(int i=0;i<nStartPos.length;i++) oe:@7stG
{ @!:~gQ
// output.writeLong(nPos); l`vb
output.writeLong(fileSplitterFetch.nStartPos); De(\<H#
output.writeLong(fileSplitterFetch.nEndPos); Hi 1@
} E\(dyq/
output.close(); jB17]OCN
} =k1 ,jn+
catch(IOException e){e.printStackTrace ();} d,G:+
catch(Exception e){e.printStackTrace ();} vNhi5EU
} <?UIux
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//读取保存的下载信息(文件指针位置) z3 lZ3
private void read_nPos() L]goHs
{ Qw ukhD7
try{ &O