/* )zAATBb4.
**SiteFileFetch.java 9r=yfc!cS
*/ 34:Y_*
package NetFox; !t!'
import java.io.*; mTBSntZx
import java.net.*; #7Jvk_r9Y
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public class SiteFileFetch extends Thread { pF<KhE*V
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SiteInfoBean siteInfoBean = null; //文件信息Bean {xu~Dx
long[] nStartPos; //开始位置 o7kQ&w
long[] nEndPos; //结束位置 #ja6nt8GC
FileSplitterFetch[] fileSplitterFetch; //子线程对象 J*D3=5&
long nFileLength; //文件长度 s)~Wcp'+M:
boolean bFirst = true; //是否第一次取文件 $J9/AFzO"
boolean bStop = false; //停止标志 4Hq6nT/
File tmpFile; //文件下载的临时信息 bPA1>p7
DataOutputStream output; //输出到文件的输出流 BT|n+Y[
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) &xE+PfX
public SiteFileFetch(SiteInfoBean bean) throws IOException s8+{##"1
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{ EYR%u'&7'
siteInfoBean = bean; bltZQI|
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 9S/X ,|i
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); x\b+B
if(tmpFile.exists ()) siz:YRur
{ (sp{.bU
bFirst = false; ;7U"wI_~c
read_nPos(); 4vyJ<b
} )^7- qy
else _#y=T20'3
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nStartPos = new long[bean.getNSplitter()]; 0)Q*u
nEndPos = new long[bean.getNSplitter()]; &I7T?
} H,Yrk(O-
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} iJb-F*_y
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public void run() (".WJXB\
{ 8V@\$4@b!#
//获得文件长度 C]M{
//分割文件 [[uZCKi
//实例FileSplitterFetch UUEbtZH;
//启动FileSplitterFetch线程 j"9Zaq_
//等待子线程返回 1O+$"5H
try{ l
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if(bFirst) PBb'`PV
{ \OVw
nFileLength = getFileSize(); :~\ y<
if(nFileLength == -1) p!7(ayu
{ S4D~`"4$/
System.err.println("File Length is not known!"); 8X)1bNGqhe
} ,lQfsntk'
else if(nFileLength == -2) cB_3~=fV
{ 9
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System.err.println("File is not access!"); 9d8U@=
}
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else N >k,"=N/
{ MrhJk
for(int i=0;i<nStartPos.length;i++) Hh'o:j(^
{ vPM2cc/o
nStartPos = (long)(i*(nFileLength/nStartPos.length)); -5Aqf\
} +t}<e(
for(int i=0;i<nEndPos.length-1;i++) <5npVm
{ T#ehJq 5
nEndPos = nStartPos[i+1]; [='<K
} F32U;fp3
nEndPos[nEndPos.length-1] = nFileLength; 0pA>w8 mh
} B+lnxr0t
} gsVm)mkd
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//启动子线程 $o^N_`l
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; v2 }>/b)
for(int i=0;i<nStartPos.length;i++) <zp|i#~
{ H;Gd
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), bix}#M
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), SOeRQb'
nStartPos,nEndPos,i); ZqfoO!Ta
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ~"22X`;h[G
fileSplitterFetch.start(); Eg0qY\'
} e89IT*
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 6&L8{P
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 7vEZb.~4z
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 79}Qj7
nEndPos = " + nFileLength); .`+N+B(4
// fileSplitterFetch[nPos.length-1].start(); {oRR]>
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//等待子线程结束 yD(v_J*
//int count = 0; _Sult;y"u
//是否结束while循环 J"
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boolean breakWhile = false; o_?A^u
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while(!bStop) V?4G~~F
{ V#\ iO
write_nPos(); g42f*~l
Utility.sleep(500); uEdeA'*^
breakWhile = true; /^b=| +Do
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for(int i=0;i<nStartPos.length;i++) R![1\Yv&
{ MXynv";<H
if(!fileSplitterFetch.bDownOver) z5 :53,`D'
{ xB,(!0{`
breakWhile = false; $<d3g:
break; WGI4DzKa
} )Q c>NF0
} v Yw$m#@
if(breakWhile) #&&
break; Kr74|W=
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//count++; ])mYE
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//if(count>4) 5j#XNc)"
// siteStop(); dPyZzMes=
} G$CI~0Se:
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System.err.println("文件下载结束!"); }+BbwBm&
} )X5en=[)O
catch(Exception e){e.printStackTrace ();} (kZ2D
} fC!+"g55
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//获得文件长度 _A=Pr_kN
public long getFileSize() !KmSLr7xU
{ g:fzf>oQ>p
int nFileLength = -1; H(ds
try{ ~19&s~
URL url = new URL(siteInfoBean.getSSiteURL()); 9Xeg&Z|!
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ?V(h@T
httpConnection.setRequestProperty("User-Agent","NetFox"); $s!2D"wl n
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int responseCode=httpConnection.getResponseCode(); #H&`wMZZ:
if(responseCode>=400) j4!oBSp
{ k{.`=j
processErrorCode(responseCode); >kG: MJj
return -2; //-2 represent access is error zM++Z*
} Ap9 %5:]
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String sHeader; p|VgtQ/)%
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for(int i=1;;i++) m7NrS?7
{ p^?]xD(
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); jt4c*0z
//Utility.log(in.readLine()); <hmRr
sHeader=httpConnection.getHeaderFieldKey(i); KcF#c_f
if(sHeader!=null) =Vi>?fWpn=
{ AJR`ohh
if(sHeader.equals("Content-Length"))
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{ FdMxw*}
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); )L%[(iI,x
break; 1bpjj'2%x
} wsyAq'%L
} b%D}mxbS
else ky|Py
break; h-=lZ~W~
} t.= 1<Ed
} [5$Y>Tr!
catch(IOException e){e.printStackTrace ();} 'I1^70bB
catch(Exception e){e.printStackTrace ();} fv?vfI+m
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Utility.log(nFileLength); SKrkB~%z
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return nFileLength; /GMT
} Mh*^@_h?
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//保存下载信息(文件指针位置) rT{+ h}vO
private void write_nPos() Z{spo=
{ [{cMEV&
try{ =#sr4T
output = new DataOutputStream(new FileOutputStream(tmpFile)); Uh8c!CA8:\
output.writeInt(nStartPos.length); "[p-Iy1
for(int i=0;i<nStartPos.length;i++) \1cJ?/$_Of
{ ?(P3ZTk?.
// output.writeLong(nPos); :igURr
output.writeLong(fileSplitterFetch.nStartPos); V
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output.writeLong(fileSplitterFetch.nEndPos); j SX VLyz
} y%=t((.Z
output.close(); Cz]NSG 5
} )%=oJ!)
catch(IOException e){e.printStackTrace ();} 8sGaq [
catch(Exception e){e.printStackTrace ();} *:hHlH* t1
} .Pi8c[
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//读取保存的下载信息(文件指针位置) TE t+At`]
private void read_nPos() %W:]OPURK
{ 8^ezqd`
try{ \oc*
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); l8Ks{(wh
int nCount = input.readInt(); QeZK&^W
nStartPos = new long[nCount]; v35=4>Y
nEndPos = new long[nCount]; Ht!]%
for(int i=0;i<nStartPos.length;i++) S1oP_A[|
{ Qfd4")zhG
nStartPos = input.readLong(); 13KfI
nEndPos = input.readLong(); Jx_BjkF
} s6| S#
input.close(); y?*4SLy
} MH=;[ | N
catch(IOException e){e.printStackTrace ();} ^i!6q9<{e
catch(Exception e){e.printStackTrace ();} o2#_CdU
} 1Xj>kE:
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private void processErrorCode(int nErrorCode) vS_Ji<W~E
{ v"N%w1`.e
System.err.println("Error Code : " + nErrorCode); qL?`l;+
} |H7f@b]Sk
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//停止文件下载 sAec*Q(R
public void siteStop() }Uc)iNU
{ >p|tIST
bStop = true; eod-N}o
for(int i=0;i<nStartPos.length;i++) %
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fileSplitterFetch.splitterStop(); xgV(0H}Mf
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} QKt[Kte
} EvQMt0[?EW
//负责部分文件的抓取 zUCtH*
**FileSplitterFetch.java c^s%t:)K
*/ Wz]ny3K[.
package NetFox; 896oz>
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#`(-Oj2hH
import java.io.*; MX\v2["FoV
import java.net.*; zv}3Sl@
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public class FileSplitterFetch extends Thread { (h3f$
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String sURL; //File URL EmO{lCENk
long nStartPos; //File Snippet Start Position @0{vA\
long nEndPos; //File Snippet End Position =2rkaBFC
int nThreadID; //Thread's ID 1?}5.*j<
boolean bDownOver = false; //Downing is over |}Wm,J
boolean bStop = false; //Stop identical _cw~N
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FileAccessI fileAccessI = null; //File Access interface /3mt=1/~{B
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ZN `D!e6
{ 9C_Vb39::$
this.sURL = sURL; ;#jE??E/:
this.nStartPos = nStart; {i09e1
this.nEndPos = nEnd; R%\K<#^\
nThreadID = id; ^<