/* 8~HC0o\2
**SiteFileFetch.java WP]<\_r2
*/ FG#j0#|*
package NetFox; c+a f=ac
import java.io.*; f{AgKW9"
import java.net.*; i"rMP#7
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public class SiteFileFetch extends Thread { +=k?Dp[
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SiteInfoBean siteInfoBean = null; //文件信息Bean Z}NAH`V`:+
long[] nStartPos; //开始位置 'R,d?ikY
long[] nEndPos; //结束位置 #
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FileSplitterFetch[] fileSplitterFetch; //子线程对象 5?O/Aub
long nFileLength; //文件长度 Q`vyDoF
boolean bFirst = true; //是否第一次取文件 ?>%u[g
boolean bStop = false; //停止标志 k5/nAaiVE
File tmpFile; //文件下载的临时信息 ,xTbt4J
DataOutputStream output; //输出到文件的输出流 &us8,x6yg
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) e-e{-pB6
public SiteFileFetch(SiteInfoBean bean) throws IOException 5)nv
{ B4|`Z'U#;
siteInfoBean = bean; UkqLLzL
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 5ef&Ih.3
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); +XpRkX&-
if(tmpFile.exists ()) ]UgAz
{ ~JZLfw
bFirst = false; vj^UF(X
read_nPos(); ZH0f32K
} Hzj*X}X#K
else $AXz/fGV
{ .oK7E(Q J
nStartPos = new long[bean.getNSplitter()]; &\"fH+S
nEndPos = new long[bean.getNSplitter()]; Q5<vK{
} b]JN23IS2
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} <`r+l5
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public void run() 6pLwwZD
{ LqUvEq
//获得文件长度 3FXMM&w
//分割文件 gx6&'${=#
//实例FileSplitterFetch 8uT6Q C f
//启动FileSplitterFetch线程 .|aSGvE
//等待子线程返回 aJ}sYf^
try{ pc.0;gN
if(bFirst) 3?%kawO&
{ bv+e'$U3
nFileLength = getFileSize(); ,Tz
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if(nFileLength == -1) A0]o/IBz
{ qXhrK
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System.err.println("File Length is not known!"); OK)0no=OAK
} X,fTzkGj
else if(nFileLength == -2) IWWFl6$-
{ kdHql>0
System.err.println("File is not access!"); L|Ydd!m
} sN g"JQ
else *C:+N>
{ A;|DQR()
for(int i=0;i<nStartPos.length;i++) L_.}z)S[\
{ p!a%*LfND
nStartPos = (long)(i*(nFileLength/nStartPos.length)); xsTxc&0^
} As\5Ze9|
for(int i=0;i<nEndPos.length-1;i++) AO]lXa
{ ~Afs
nEndPos = nStartPos[i+1]; 3>(`Y
} ^KaMi_--
nEndPos[nEndPos.length-1] = nFileLength; Orb(xLChJ
} kp6x6%{K\
} K$]QzPXS
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//启动子线程 QVH_B+
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fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; Ck:J
for(int i=0;i<nStartPos.length;i++) < 5PeI
{ )aC+qhh
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), i3"sArP"|
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), "_K 6=
nStartPos,nEndPos,i); /iN\)y#u1
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); sXa8(xc
fileSplitterFetch.start(); 64vSJx>u
} yTn@p(J
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 8$vH&HdI
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); C5M-MZaS
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", H<xC%/8
nEndPos = " + nFileLength); %OtW\T=u
// fileSplitterFetch[nPos.length-1].start(); =z/F=1^<
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//等待子线程结束 $G_<YVXcG
//int count = 0; PGKXzp'
//是否结束while循环 1A)~Y
boolean breakWhile = false; GVM#Xl}w9
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while(!bStop) (lnQ!4LK
{ gQEV;hCO
write_nPos(); Ueeay^zN
Utility.sleep(500); J50 ~B3bj`
breakWhile = true; %_[-[t3
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for(int i=0;i<nStartPos.length;i++) <e^/hR4O
{ DPwSg\*)
if(!fileSplitterFetch.bDownOver) KR}0(,Y
{ 'O`3FI
breakWhile = false; $Y`aS^IW
break; U.aa iX7
} o.5j@dr
} Tpukz_F
if(breakWhile) yd72y'zi
break; Wj:QC<5
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//count++; #$w#"Nr9k
//if(count>4) ?lK!OyCkc
// siteStop(); 3ngLEWT
} sb
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System.err.println("文件下载结束!"); 4I-p/&Q
} //Gvk|O1
catch(Exception e){e.printStackTrace ();} 5u46Vl{
} qX(%Wn;n
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//获得文件长度 vb- .^l
public long getFileSize() '-IT@}
{ r?!xL\C\
int nFileLength = -1; J,O@T)S@
try{ j/<y
URL url = new URL(siteInfoBean.getSSiteURL()); J31M:<
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); tA-B3 ]
httpConnection.setRequestProperty("User-Agent","NetFox"); mx9/K+:
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int responseCode=httpConnection.getResponseCode(); f~FehN7
if(responseCode>=400) U!/nD~A
{ b8.%? _?
processErrorCode(responseCode); YfwJBzD
return -2; //-2 represent access is error 0s|LK
} Qs9 U&*L
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String sHeader; 5}xni
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for(int i=1;;i++) i grog
{ X|`,AKJit
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ~n^G<iXLp
//Utility.log(in.readLine()); 0f%:OU5Y
sHeader=httpConnection.getHeaderFieldKey(i); ;_/q>DR>,3
if(sHeader!=null) X-1Vp_(,TP
{ ;q; C^l
if(sHeader.equals("Content-Length")) Zd U{`>v
{ 1Wk
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); K$cIVsfr
break; 1=Zw=ufqV
} \Byk`}
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} ?=!XhU
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else aNC,ccm
break; 0 l:pWc
} ph?0I:eU
} huJq#5?
catch(IOException e){e.printStackTrace ();} Sz|CreFK16
catch(Exception e){e.printStackTrace ();} g&3#22z
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Utility.log(nFileLength); %Z[/U
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return nFileLength; wDSUMB<?
} B21AcE
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//保存下载信息(文件指针位置) )H9*NB8%
private void write_nPos() (oitCIV
{ 18"VB50b}
try{ Z'NbHwW}
output = new DataOutputStream(new FileOutputStream(tmpFile)); D}/=\J/
output.writeInt(nStartPos.length); r!$NZ2I
for(int i=0;i<nStartPos.length;i++) mBZDl4 '
{ cNo4UZvr
// output.writeLong(nPos); Ccr+SR2
output.writeLong(fileSplitterFetch.nStartPos); oPu|Q^I=
output.writeLong(fileSplitterFetch.nEndPos); 5o| !f
} wUCDJY:,1
output.close(); :"P hkR
} 7ml0
catch(IOException e){e.printStackTrace ();} 4A/,X>W61
catch(Exception e){e.printStackTrace ();} };m7FO
} !""!sFx)R
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//读取保存的下载信息(文件指针位置) 3{4/7DcX
private void read_nPos() ]Ec[")"kT
{ I0H Y#z%
try{ '<D `:srV
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); to!W={S<ol
int nCount = input.readInt(); @`;Y/',
nStartPos = new long[nCount]; W
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nEndPos = new long[nCount]; 5Ue^>8-
for(int i=0;i<nStartPos.length;i++) v^],loi<V
{ <`xRqe:&9
nStartPos = input.readLong(); Cre0e$ a
nEndPos = input.readLong(); mU+FQX
} oiv2rOFu
input.close(); tM$0 >E
} {?f ^
catch(IOException e){e.printStackTrace ();} 6l\UNG7
catch(Exception e){e.printStackTrace ();} lDJd#U'V
} a^XTW7]r
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private void processErrorCode(int nErrorCode) BY4 R@)
{ ]tQDk4&i
System.err.println("Error Code : " + nErrorCode); 6I cM:x
} V1`5D7Z
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//停止文件下载 bN4&\d*u#
public void siteStop() KBr5bcm4u
{ Wt+y-ES
bStop = true; LA+$_U"Jk
for(int i=0;i<nStartPos.length;i++) 6PJJ?}P^1
fileSplitterFetch.splitterStop(); "_1-IE
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} {"0TO|%x
} B)DC,+@$
//负责部分文件的抓取 Jl>at
**FileSplitterFetch.java F/h :&B:;
*/ )pS_+ZF
package NetFox; V"7<[u]K|
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import java.io.*; 2-6.r_
import java.net.*; [^U;
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public class FileSplitterFetch extends Thread { Y*kh$E%<#
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String sURL; //File URL -yl4tW
long nStartPos; //File Snippet Start Position 3%[)!zKv
long nEndPos; //File Snippet End Position ^/%o%J&