/* b2H-D!YO^
**SiteFileFetch.java rk47$36X
*/ )NK#}c~5
package NetFox; x)pR^t7u8
import java.io.*; m/q`k
import java.net.*; Cj=_WWo
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public class SiteFileFetch extends Thread { dA^{}zZu
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SiteInfoBean siteInfoBean = null; //文件信息Bean A-, hm=?
long[] nStartPos; //开始位置 =b8u8*ua
long[] nEndPos; //结束位置 B.!&z-)#
FileSplitterFetch[] fileSplitterFetch; //子线程对象 c
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long nFileLength; //文件长度 X3][C
boolean bFirst = true; //是否第一次取文件 9e4`N"#,lI
boolean bStop = false; //停止标志 P$]K
File tmpFile; //文件下载的临时信息 lavy?tFer
DataOutputStream output; //输出到文件的输出流 E.*gKfL
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) D< kf/hj
public SiteFileFetch(SiteInfoBean bean) throws IOException ?M^qSo=/~
{ jxZf,]>T
siteInfoBean = bean; Dk&(QajL
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ~pHuh#>
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); h/2@4XKj
if(tmpFile.exists ()) eFotV.T!#
{ <m0=bm{j
bFirst = false; E@6gTx*
read_nPos(); a|(|!=
} 5A^8?,F@
else )3O#T$h
{ 1]Cdfj6@
nStartPos = new long[bean.getNSplitter()]; z "z
nEndPos = new long[bean.getNSplitter()]; T`,G57-5
} vY"I
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public void run() WJI}~/z;C
{ .Yvy37n((
//获得文件长度 t1~k+
//分割文件 ,tDLpnB@;
//实例FileSplitterFetch J@QOF+ &
//启动FileSplitterFetch线程 DliDBArxZ
//等待子线程返回 aHb&+/HZ
try{ IwOL1\'T4
if(bFirst) S(^YTb7
{ &kn?=NW
nFileLength = getFileSize(); BS?i!Bm 7
if(nFileLength == -1) 72/ bC
{ -8vGvI>
System.err.println("File Length is not known!"); 'T(Q
} |onLJY7)
else if(nFileLength == -2) s
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{ VbTX;?
System.err.println("File is not access!"); |`pBI0Sjo
} <WnIJum
else #DARZh U)
{ um%s9
for(int i=0;i<nStartPos.length;i++) '+ mI
{ 66sgs16k
nStartPos = (long)(i*(nFileLength/nStartPos.length)); t~)4f.F:
} nE?:nJ|%E
for(int i=0;i<nEndPos.length-1;i++) WncHgz
{ /D yig
nEndPos = nStartPos[i+1]; \Ui8gDJ8y5
} SL`; `//
nEndPos[nEndPos.length-1] = nFileLength; _\8E/4zh
} >5?c93?
} }2\Hg
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//启动子线程 ^hr# 1
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; Ui-Y`
for(int i=0;i<nStartPos.length;i++) 4=`1C-v?q
{ X$G:3uoN
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), V|F/ynJfA
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), \){_\{&
nStartPos,nEndPos,i); Pa#Jwo
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); X}5"ZLa7l
fileSplitterFetch.start(); Yakrsi/jV}
} Ut C<TBr
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), \So)g)K
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); P[$idRS&
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", P.g./8N`z
nEndPos = " + nFileLength); Nq^o8q_
// fileSplitterFetch[nPos.length-1].start(); v~W;&{
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//等待子线程结束 wAgVevE
//int count = 0; tk:nth
//是否结束while循环 j^v<rCzc(
boolean breakWhile = false; L_|iQwU%
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while(!bStop) >|gXE>
{ O2yD{i#l*#
write_nPos(); wDSwcNS
Utility.sleep(500); NPFI^Uj#A
breakWhile = true; N H:Bdl3
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for(int i=0;i<nStartPos.length;i++) TKbfZw
{ n5efHJU
if(!fileSplitterFetch.bDownOver) {5HQ=&
{ g;OR{
breakWhile = false; 44t;#6p@%>
break; |}:q@]dC#
} !6sR|c"~j
} PR AP~P&^
if(breakWhile) [3ggJcUgW>
break; K6)IBV;
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//count++; 9eE
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//if(count>4) :;hm^m]Y
// siteStop(); a;kiAJ'
} jsF5q~F
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System.err.println("文件下载结束!"); Im};wJ&
} \}<J>R@
catch(Exception e){e.printStackTrace ();} bE=[P}E
}
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//获得文件长度 %F$]v
public long getFileSize() h/y0Q~|/d
{ Fo5UG2E&
int nFileLength = -1; ACFEM9 [=
try{ F9(jx#J~t
URL url = new URL(siteInfoBean.getSSiteURL()); !}c\u
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); a*_&[
httpConnection.setRequestProperty("User-Agent","NetFox"); O-pH~E
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int responseCode=httpConnection.getResponseCode(); iCGHcN^3
if(responseCode>=400) !Htl e %
{ @Jlsx0i}}
processErrorCode(responseCode); P1]F0fR
return -2; //-2 represent access is error $]W*;MTI}
} &uV|Ie8@q
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String sHeader; ^vzXT>t-M
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for(int i=1;;i++) P]2 /}\f
{ Q84XmXm|
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); (y\.uPu!
//Utility.log(in.readLine()); _`laP5~
sHeader=httpConnection.getHeaderFieldKey(i); hv#LKyp%
if(sHeader!=null) ^)$T`
{ vfVF^
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if(sHeader.equals("Content-Length")) )7AjRtb!/
{ e(OKE7
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); .lI.I
break;
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} xk,1D
} RUut7[r
else p_fsEY
break; B4c;/W-
} 5nmE*(
} ;2MdvHhz1
catch(IOException e){e.printStackTrace ();} 8{7'w|/;.{
catch(Exception e){e.printStackTrace ();} ]/%CTD(O
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Utility.log(nFileLength); dDA&\BuS
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return nFileLength; j.V7`x
} +K2HMf'
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//保存下载信息(文件指针位置) o?3C -A|
private void write_nPos() :Fh _Ya0
{ DIhV;[\
try{ e;"%h%'
output = new DataOutputStream(new FileOutputStream(tmpFile)); )IIWXN2A
output.writeInt(nStartPos.length); gy#G; 9p
for(int i=0;i<nStartPos.length;i++) xyXVWd[
{ $z5C+K@
// output.writeLong(nPos); KEq48+j
output.writeLong(fileSplitterFetch.nStartPos); qV``' _=<
output.writeLong(fileSplitterFetch.nEndPos); Tv%
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} /"R{1
output.close();
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} \TYH7wXDP
catch(IOException e){e.printStackTrace ();} 9/R=_y-
catch(Exception e){e.printStackTrace ();} bZ+Hu~
} ws,VO*4
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//读取保存的下载信息(文件指针位置) \@^`
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private void read_nPos() ^~bAixH^k
{ <){J|O
try{ 92*"3)
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); "9y0]~
int nCount = input.readInt(); 7Fb!;W#X
nStartPos = new long[nCount]; E-?JHJloU
nEndPos = new long[nCount]; BG]|iHi
for(int i=0;i<nStartPos.length;i++)
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{ Xupwh5G2
nStartPos = input.readLong(); %kQ[zd^
nEndPos = input.readLong(); Dkg-y9
} 3Z%jx#
input.close(); WxtB:7J
} RTL@WI
catch(IOException e){e.printStackTrace ();} WtMDHfwqu\
catch(Exception e){e.printStackTrace ();} d#I; e
} 0F&(}`V
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private void processErrorCode(int nErrorCode) id1gK(F8H
{ UGA``;f
System.err.println("Error Code : " + nErrorCode); i/,IG+4vI
} 2 rS`ViicD
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//停止文件下载 88DMD"$B
public void siteStop() uC 2{
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{ 0qN+W&H
bStop = true; rp!{QG
for(int i=0;i<nStartPos.length;i++) |W|RX3D
fileSplitterFetch.splitterStop(); D}nRH@<`
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} ;W@
} !q^2| %
//负责部分文件的抓取 A$::|2~
**FileSplitterFetch.java h$ $i@IO0
*/ >WY\P4)k
package NetFox; z3yAb"1Hg
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import java.io.*; v)v`896S`
import java.net.*; j[:Iu#VR
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public class FileSplitterFetch extends Thread { }#` -mRaU
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String sURL; //File URL |'Ksy{lA
long nStartPos; //File Snippet Start Position nh/%0=S
long nEndPos; //File Snippet End Position _%PEv{H0.
int nThreadID; //Thread's ID 7qhX`$
boolean bDownOver = false; //Downing is over H\=S_b1wo
boolean bStop = false; //Stop identical -JXCO<~k
FileAccessI fileAccessI = null; //File Access interface 9Pdol!
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException " VSma
{ QbEb}
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this.sURL = sURL; e/<'HM T
this.nStartPos = nStart; KhNOxMZ
this.nEndPos = nEnd; JcW<