/* WwF4`kxT
**SiteFileFetch.java Ibd
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*/ O0gLu1*1v
package NetFox; iZ3%'~K<3J
import java.io.*; Q7 Clr{&
import java.net.*; eiaLzI,O
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public class SiteFileFetch extends Thread { lll]FJ1
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SiteInfoBean siteInfoBean = null; //文件信息Bean ='0f#>0Q
long[] nStartPos; //开始位置 #D$vH
long[] nEndPos; //结束位置 *|RQ
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FileSplitterFetch[] fileSplitterFetch; //子线程对象 )k8=< =s
long nFileLength; //文件长度 lnFOD+y9
boolean bFirst = true; //是否第一次取文件 ~\%MJ3
boolean bStop = false; //停止标志 AqKl}8
File tmpFile; //文件下载的临时信息 c2z%|\q
DataOutputStream output; //输出到文件的输出流 'V5^D<1P
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) =x4:jas
public SiteFileFetch(SiteInfoBean bean) throws IOException bV#U&)|
{ PL#8~e;'
siteInfoBean = bean; \1[I(u
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ''Y}Q"
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); pH%cbBm
if(tmpFile.exists ()) Ab<4F7
{ oOhm`7iy
bFirst = false; [UVxtM J
read_nPos(); QM1-w^
} |yi3y `f
else \:8 eN}B
{ 9K@>{69WQ
nStartPos = new long[bean.getNSplitter()]; FBM 73D@`
nEndPos = new long[bean.getNSplitter()]; N;A#3Ter
} W%f:+s}cI
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public void run() K2TO,J3 E
{ {R7>-Y[4)2
//获得文件长度 nu] k<^I5|
//分割文件 ={?} [E
//实例FileSplitterFetch OYJy;u3"
//启动FileSplitterFetch线程 {_1^ GIIS
//等待子线程返回 Z1FO.[FV
try{ zi23k=
if(bFirst) M#J OX/
{ 5r<%xanXW/
nFileLength = getFileSize(); "-y\F}TE
if(nFileLength == -1) Sq&*K9:z
{ H(ht{.sjI
System.err.println("File Length is not known!"); )EYsqj
} %Yg;s'F>#q
else if(nFileLength == -2) I?v)>||Q
{ XnQd(B`M
System.err.println("File is not access!"); 2B_6un];W
} CJ_X:Frj)
else ~4[2{M.0>@
{ v.)'be*u
for(int i=0;i<nStartPos.length;i++) ~ X8U@f
{ :4h4vp<
nStartPos = (long)(i*(nFileLength/nStartPos.length)); R0;c'W)
} a}a_&rf~Z
for(int i=0;i<nEndPos.length-1;i++) p#O#MN*
{ zh'TR$+\hO
nEndPos = nStartPos[i+1]; f)q\RJA)X
} =y8HOT}8
nEndPos[nEndPos.length-1] = nFileLength; ^>uzMR!q5
} +15j^ Az
} #lQbMuR
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//启动子线程 l/yLSGjM
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; EA2BN}
for(int i=0;i<nStartPos.length;i++) |H5){ 2V>K
{ rd\mFz-SB
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), [] 0`>rVq
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 6hYv
nStartPos,nEndPos,i); 2](R}
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); !&TbE@Xk
fileSplitterFetch.start();
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} :Tw3Oo_~S
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), gh}FZs5P
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); N{`-&8q;K
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ?rWqFM:hb
nEndPos = " + nFileLength); !h7`W*::
// fileSplitterFetch[nPos.length-1].start(); :7IL|bA<
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//等待子线程结束 zzuDI_,/
//int count = 0; F8YD:
//是否结束while循环 uJMF\G=nb
boolean breakWhile = false; $Ha?:jSc
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while(!bStop) H|T:_*5
{ &qFdP'E;$
write_nPos(); kjN9(&D
Utility.sleep(500); @y->4`N
breakWhile = true; q^Lj)zmnK
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for(int i=0;i<nStartPos.length;i++) <(?ahO5
{ @\Sa)
if(!fileSplitterFetch.bDownOver) |A7Yv
{ :D-d`OyjG>
breakWhile = false; Ka2U@fK"
break; `8\pihww
} QY-P!JD
} >Fz_]z
if(breakWhile) NaG1j+LN
break; ZP*Hx
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//count++; 5wRDH1z@{
//if(count>4) >9F,=63A
// siteStop(); DyG3|5s1R
} b.h~QyI/W
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System.err.println("文件下载结束!"); O~9
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} 6YrkS;_HS
catch(Exception e){e.printStackTrace ();} =9y'6|>l
} 2#@S6zc
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//获得文件长度 DkA cT[
public long getFileSize() Q0,]Q ]_
{ -a]oN:ERb
int nFileLength = -1; +uKlg#wqc
try{ s}`ydwSg8
URL url = new URL(siteInfoBean.getSSiteURL()); w@nN3U+
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ;_of'
httpConnection.setRequestProperty("User-Agent","NetFox"); ;Y
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int responseCode=httpConnection.getResponseCode(); +kH*BhSj
if(responseCode>=400) ;QW6Tgt11
{ v(FO8*5DZ
processErrorCode(responseCode); Dq*>+1eW2
return -2; //-2 represent access is error !s?vj
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} '7
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String sHeader; 5IBe;o
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for(int i=1;;i++) TWEmW&Q
{ <QugV3e
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); !a~>;+
//Utility.log(in.readLine()); d'kQE_y2.
sHeader=httpConnection.getHeaderFieldKey(i); tu6c!o,@
if(sHeader!=null) 7}%3Aw6]S
{ ^g~Asz5]
if(sHeader.equals("Content-Length")) &y mfA{s
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); %xyt4}-)m
break; aoco'BR F
} _z)G!_7.>\
} |`U^+Nf
else !?Z}b.%W
break; [}9R9G>"
} '>`?T}a,
} +T
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catch(IOException e){e.printStackTrace ();} 37a"<
catch(Exception e){e.printStackTrace ();} I^[R]Js
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Utility.log(nFileLength); Z%N{Y x(
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return nFileLength; WsL*P.J
} d&wg\"E
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//保存下载信息(文件指针位置) S$%T0~PR~
private void write_nPos() #v=hiL
{ ]"q)X{G(+
try{ Q68&CO(rE
output = new DataOutputStream(new FileOutputStream(tmpFile)); W~POS'1
output.writeInt(nStartPos.length); 1V+a;-?
for(int i=0;i<nStartPos.length;i++) +AtZltM i
{ IW
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// output.writeLong(nPos); tcwE.>5O
output.writeLong(fileSplitterFetch.nStartPos); %^p1ax
output.writeLong(fileSplitterFetch.nEndPos); &tj0Z:
} jLI(Z
output.close(); ?<#6=
} rfkk3oy
catch(IOException e){e.printStackTrace ();} dum! AO
catch(Exception e){e.printStackTrace ();} YCj"^RC^
} ?2
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//读取保存的下载信息(文件指针位置) FdKp@&O+1
private void read_nPos() 245(ajxHC
{ bkceR>h%
try{ {K09U^JU
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); \d&j`UVY
int nCount = input.readInt(); bguhx3s
nStartPos = new long[nCount]; M9_
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nEndPos = new long[nCount]; a,#f%#J\
for(int i=0;i<nStartPos.length;i++) I$n 0aR6
{ zob^z@2
nStartPos = input.readLong(); ^a[7qX_B
nEndPos = input.readLong(); %?<C
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} \%KJ+PJ
input.close(); KR^lmN
} r'7;:
catch(IOException e){e.printStackTrace ();} x9a*^l
catch(Exception e){e.printStackTrace ();} %Fa/82:- "
} RN5\,>+
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private void processErrorCode(int nErrorCode) ,LSF@1|Fx
{ Agl5[{]E
System.err.println("Error Code : " + nErrorCode); (WVN*OR?
} "
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//停止文件下载 *%:p01&+
public void siteStop() ZC_b`q<
{ YKJk)%;+w
bStop = true; <dV|N$WV
for(int i=0;i<nStartPos.length;i++) VSx[{yn
fileSplitterFetch.splitterStop(); 1U;je,)
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} MQ$[jOAqP
} H2BD5
//负责部分文件的抓取 K,&)\r kzD
**FileSplitterFetch.java qmdl:J|?
*/ }9/30
package NetFox; `l9Pk\X[
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import java.io.*; }W#Gf.$6C
import java.net.*; 05gU~6AF
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public class FileSplitterFetch extends Thread { (*;b\h
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String sURL; //File URL X-|`|>3E
long nStartPos; //File Snippet Start Position )TP1i
long nEndPos; //File Snippet End Position -;a}'1HOE
int nThreadID; //Thread's ID Ett%Y*D+J
boolean bDownOver = false; //Downing is over x>A(016:C
boolean bStop = false; //Stop identical /1zi(z
FileAccessI fileAccessI = null; //File Access interface \L}Soe'
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException *TfXMN?w
{ 5n"b$hMF
this.sURL = sURL; $iUK,
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this.nStartPos = nStart; "9!ln
this.nEndPos = nEnd; WogJ~N,d53
nThreadID = id; VE+Q Y9(
fileAccessI = new FileAccessI(sName,nStartPos);//定位 :XxsD D
} BKP XXR
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public void run() 1&uk