/* { 1+Cw?1d
**SiteFileFetch.java J[e}
*/ $|4cJ#;^L
package NetFox; !oZQ2z~
import java.io.*; %04:z77
import java.net.*; i{o#3
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public class SiteFileFetch extends Thread { ^cYStMjpy
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SiteInfoBean siteInfoBean = null; //文件信息Bean r5t;'eCea
long[] nStartPos; //开始位置 _*O7l
long[] nEndPos; //结束位置 =nJ{$%L\x,
FileSplitterFetch[] fileSplitterFetch; //子线程对象 <+V-k|
long nFileLength; //文件长度 ?qju
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boolean bFirst = true; //是否第一次取文件 d{er|$E?
boolean bStop = false; //停止标志 B4`2.yRis
File tmpFile; //文件下载的临时信息 qBT_!
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DataOutputStream output; //输出到文件的输出流 >vUB%OLyP
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) #v{ Y=$L
public SiteFileFetch(SiteInfoBean bean) throws IOException aXMv(e+
{ ZU=,f'bU
siteInfoBean = bean; r
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//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ^'m\D;
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ?q\FLb%"7
if(tmpFile.exists ()) %dEB /[
{ EJ1Bq>u7
bFirst = false; ARP KzF`Wq
read_nPos(); 10mK}HT>4B
} 7$!yfMttu
else z8IPhE@
{ ^;.T}c%N
nStartPos = new long[bean.getNSplitter()]; 3pB}2]
nEndPos = new long[bean.getNSplitter()]; 8EOh0gk7
} n'THe|:I
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public void run() |~z3U>
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//获得文件长度 (B@X[~
//分割文件 )T9;6R$b
//实例FileSplitterFetch bG"HD?A_
//启动FileSplitterFetch线程 "jT#bIm
//等待子线程返回 1@xP(XS
try{ Q8p=!K
if(bFirst) m#JI!_~!
{ g6WPPpqus
nFileLength = getFileSize(); ny)]GvxI
if(nFileLength == -1) uKv&7p@|_)
{ $*k)|4
System.err.println("File Length is not known!"); c7\VTYT
} S.{fDcM
else if(nFileLength == -2) xOythvO
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System.err.println("File is not access!"); 6Opa{]
} Av o|v>
else P|N2R5(>T
{ yMb|I~k
for(int i=0;i<nStartPos.length;i++) e&0K;yU
{ $xT1 1 ^
nStartPos = (long)(i*(nFileLength/nStartPos.length)); D|l,08n"?
} r4u z} jl{
for(int i=0;i<nEndPos.length-1;i++) /be=u@KV
{ n#4Gv|{XMD
nEndPos = nStartPos[i+1]; P^pFqUL7#
} @xS]!1-
nEndPos[nEndPos.length-1] = nFileLength; 9t?L\
} Vo\H<_=G
} >)NQH9'1
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//启动子线程 k^%2_H
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; bHE7yv [
for(int i=0;i<nStartPos.length;i++) \7Qb229?
{ 'f+NW&
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), )s)_XL
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), NgVR,G|1
nStartPos,nEndPos,i); R(G\wqHUT3
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); _1aGtX|W
fileSplitterFetch.start(); ?sXG17~Bm
} =\Iu$2r`
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), z<B CLP
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); a[sKE?
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", hd2'AlB
nEndPos = " + nFileLength); yzR=A%V8A
// fileSplitterFetch[nPos.length-1].start(); %D`o
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//等待子线程结束 @E%DP9.I
//int count = 0; L[y Pjw:0
//是否结束while循环 -R0/o7
boolean breakWhile = false; zT[6eZ8m
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while(!bStop) ^2S# Uk
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write_nPos(); $ J1f.YE
Utility.sleep(500); -:<lkq&/
breakWhile = true; [|RjHGf
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for(int i=0;i<nStartPos.length;i++) irKIy
{ k_ Y~;P@
if(!fileSplitterFetch.bDownOver) Dz;HAyPj
{ \S4SI
breakWhile = false; mrM4RoO
break; Qhn;`9+L
} fvqd'2 t
} T2=HG Z
if(breakWhile) s_[VHPN
break; DMn4ll|
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//count++; I4t*?
//if(count>4) @MbVWiv
// siteStop(); fThgK;Qy'U
} h/)_)
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System.err.println("文件下载结束!"); G$bJ+
} !yJICjXj
catch(Exception e){e.printStackTrace ();} wRvb8F0
} 3@<zg1.9-
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//获得文件长度 ~F!,PM/
public long getFileSize() H:QhrL+7_
{ V
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int nFileLength = -1; $_Nf-:D*
try{ w0lT%CPx
URL url = new URL(siteInfoBean.getSSiteURL()); fCw*$:O
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ;11x"S
httpConnection.setRequestProperty("User-Agent","NetFox"); ru9zTZZD
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int responseCode=httpConnection.getResponseCode(); N|usFqCNk^
if(responseCode>=400) "_1)CDqP
{ nw6pV%
processErrorCode(responseCode); =9wy/c$
return -2; //-2 represent access is error WsGths+[
} %, P>%'0
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String sHeader; Fhf<T`
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for(int i=1;;i++) ?C-Towo=i
{ 78 f$6J q
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); kz}R[7
//Utility.log(in.readLine()); U7h(`b
sHeader=httpConnection.getHeaderFieldKey(i); B1!kn}KlL{
if(sHeader!=null) x;s0j"`Jb
{ lLhL`C!
if(sHeader.equals("Content-Length")) QzvHm1,@
{ oUZoj2G1
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 2JGL;U$
break; EgjR^A1W2
} XvTCK>1
} hX:"QXx
else \ 0W!4D
break; zUJZ`seF
} c9"r6j2m5
} ;&b.T}Nf06
catch(IOException e){e.printStackTrace ();} Q\ppfc{,
catch(Exception e){e.printStackTrace ();} OHv!
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Utility.log(nFileLength); W/$Zvl
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return nFileLength; =FP0\cQ.
} 4GdX/6C.
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//保存下载信息(文件指针位置) "qz3u`[o
private void write_nPos() rwLAW"0Qz
{ ZBT1Y.qA
try{ 46@{5)Tq
output = new DataOutputStream(new FileOutputStream(tmpFile)); : 18KR*;p
output.writeInt(nStartPos.length); !9Z r;K~\
for(int i=0;i<nStartPos.length;i++) DyJ.BQdk)
{ r0;:t
// output.writeLong(nPos); -a,-J]d0+
output.writeLong(fileSplitterFetch.nStartPos); <EO$]>;0
output.writeLong(fileSplitterFetch.nEndPos); dO> VwP
} '7^M{y/dU
output.close(); RD7^&
} sUJ%x#u}Fk
catch(IOException e){e.printStackTrace ();} )SF}2?7e
catch(Exception e){e.printStackTrace ();} `{k"8#4:qA
} x+8_4>,>Y7
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//读取保存的下载信息(文件指针位置) }o4N<%/+
private void read_nPos() v{zMO:3
{ }/tf>?c
try{ X|f7K
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ]V l]XT$Um
int nCount = input.readInt(); vX0f,y
nStartPos = new long[nCount];
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nEndPos = new long[nCount]; zi R5:d3
for(int i=0;i<nStartPos.length;i++) #6Fez`A
{ Un`^jw#_
nStartPos = input.readLong(); BS Iy+
nEndPos = input.readLong(); >(uZtYM\j
} c\B|KhDk
input.close(); F'jWV5"*
} "k*PA\U
catch(IOException e){e.printStackTrace ();} $vC1 K5sLk
catch(Exception e){e.printStackTrace ();} MYJg8 '[j
} /Jf.y*;
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private void processErrorCode(int nErrorCode)
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{ f Vb-$
System.err.println("Error Code : " + nErrorCode); kB?al#`
} -F'b8:m
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//停止文件下载 R\o<7g-|
public void siteStop() yFDv6yJ.
{ m_?d=o
bStop = true; 06$!R/K
for(int i=0;i<nStartPos.length;i++) ST\$=
fileSplitterFetch.splitterStop(); )*4fzo
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} eF[63zx5*
} TIp:FW[
//负责部分文件的抓取 -@T/b$]'n
**FileSplitterFetch.java zSo)k~&[3
*/ Q+4Xs.#
package NetFox; T,|
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import java.io.*; UnI48Y
import java.net.*; 7AYd!n&S
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public class FileSplitterFetch extends Thread { T&Lb<'f
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String sURL; //File URL !\&