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**SiteFileFetch.java B&|F9Z6D
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package NetFox; 0[}"b(O{
import java.io.*; l i}4d+
import java.net.*; 7QL>f5Q
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public class SiteFileFetch extends Thread { c:"*MM RC
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SiteInfoBean siteInfoBean = null; //文件信息Bean t6_6Bl:
long[] nStartPos; //开始位置 ?1}1uJMj-
long[] nEndPos; //结束位置 j['Z|Am"l
FileSplitterFetch[] fileSplitterFetch; //子线程对象 LKY4rY!|@d
long nFileLength; //文件长度 &!JX
boolean bFirst = true; //是否第一次取文件 {6'5K
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boolean bStop = false; //停止标志 YcE:KRy
File tmpFile; //文件下载的临时信息 X4*{CM
DataOutputStream output; //输出到文件的输出流 7}(LO^,A
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 4W}8?&T
public SiteFileFetch(SiteInfoBean bean) throws IOException 4%2QF F@
{ (.7_`T6QG
siteInfoBean = bean; rs2~spN;h
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); %stZ'IX
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); a?E]-Zf
if(tmpFile.exists ()) VztalwI
{ 6N\~0d>5m
bFirst = false; 1eI>Yy>}
read_nPos(); *\m
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}
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nStartPos = new long[bean.getNSplitter()]; orf21N+ [
nEndPos = new long[bean.getNSplitter()]; RvV4SlZz
} y!GjC]/
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public void run()
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//获得文件长度 ;Avd$&::
//分割文件 :^lyVQ%@
//实例FileSplitterFetch O:Bfbna
//启动FileSplitterFetch线程 G+AD
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//等待子线程返回 j2deb`GD
try{ @^}
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if(bFirst) //`heFuc]>
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nFileLength = getFileSize(); <M=U @
if(nFileLength == -1) cH'*J/
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System.err.println("File Length is not known!"); 7J./SBhB
} |f'U_nE#R/
else if(nFileLength == -2) neJNMdv@T
{ g}|a-
System.err.println("File is not access!"); Hkg^
} 6G7B&"&
else :2Qm*Y&_$V
{ `23&vGk}
for(int i=0;i<nStartPos.length;i++) :+ @-F>Q
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); Y}'C'PR
} i;*c|ma1>
for(int i=0;i<nEndPos.length-1;i++) zC!]bWsD
{ tc\LK_@$/F
nEndPos = nStartPos[i+1]; )-|A|1Uo
} IV;juFw}G
nEndPos[nEndPos.length-1] = nFileLength; :ZL;wtT
} \`jFy[(Pa'
} !tv3.:eT
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//启动子线程 !V$nU8p|
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; s
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for(int i=0;i<nStartPos.length;i++) [nn/a?Z4S
{ ?c"No|@+
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), G{}E~jDi?
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), NwD*EuPF :
nStartPos,nEndPos,i); N+\#k*n?
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); jpZX5_o
fileSplitterFetch.start(); 9z\q_0&i
} !Qjpj KRy
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 511^f`P<
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); kf_s.Dedw
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", }lML..((1
nEndPos = " + nFileLength); 7'7bIaJk
// fileSplitterFetch[nPos.length-1].start(); NS-u,5Jt
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//等待子线程结束 2W|4
//int count = 0; }fZT$'*;
//是否结束while循环 ,AGK O,w
boolean breakWhile = false; =r3Yt9
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while(!bStop) LpaY Md;
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write_nPos(); k7>* fQ89@
Utility.sleep(500); 6.~HbN
breakWhile = true; .hn{m9|U
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for(int i=0;i<nStartPos.length;i++) muT+H(Z p}
{ `5<
if(!fileSplitterFetch.bDownOver) UY*Hc
{ ktU98Bk]
breakWhile = false; Sq/M
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break; ml.l( 6A
} iBwl(,)?m2
} s#&jE
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if(breakWhile) kR7IZo"q
break; ~e{AgY)
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//count++;
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//if(count>4) aWm0*W"(@
// siteStop(); YNn,{Xi
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System.err.println("文件下载结束!"); eg~$WB;1
} vlw2dY@^
catch(Exception e){e.printStackTrace ();} (-(,~E
} 6|X
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//获得文件长度 z(g4D!
public long getFileSize() j^llO1i/
{ |q^e&M<
int nFileLength = -1; rVzjLkN^
try{ }EE
URL url = new URL(siteInfoBean.getSSiteURL()); #~I%qa"_pa
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); [
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httpConnection.setRequestProperty("User-Agent","NetFox"); "}*P9-%
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int responseCode=httpConnection.getResponseCode();
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if(responseCode>=400) SLSJn))@!
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processErrorCode(responseCode); ?#ndMv!$
return -2; //-2 represent access is error ZL #4X*zT
} L;Nz\sJ
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String sHeader; ~ d/Doi
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for(int i=1;;i++) RSG4A>%!mI
{ bnWIB+%_
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ^>.?kh9z
//Utility.log(in.readLine()); MM|&B`v@;
sHeader=httpConnection.getHeaderFieldKey(i); o(]kI?`
if(sHeader!=null) NAZxM9
{ f6PXcV
if(sHeader.equals("Content-Length")) W~.1f1)
{ *1ekw#'
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); /_xwHiA
break; mdypZ 1f_
} Y{1IRP?S
} 0+P_z(93?
else {K*l,U
break; Za jQ B
} sw' 20I
} |bi"J;y
catch(IOException e){e.printStackTrace ();} 09_3`K.*
catch(Exception e){e.printStackTrace ();} !R//"{k0?
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Utility.log(nFileLength); j()_
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return nFileLength; _;yp^^S
} m qPWCFP
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//保存下载信息(文件指针位置) ym2\o_^(
private void write_nPos() -qs.'o
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try{ FxKH?Rl
output = new DataOutputStream(new FileOutputStream(tmpFile)); 7xVI,\qV
output.writeInt(nStartPos.length); bo$xonV @y
for(int i=0;i<nStartPos.length;i++) b}9K"GT
{ M86v
// output.writeLong(nPos); @_FL,AC&m
output.writeLong(fileSplitterFetch.nStartPos); |5F]y"Nb
output.writeLong(fileSplitterFetch.nEndPos); []1VD#
} RA+Y ./*h
output.close(); CP7Zin1S/w
} AXH4jQw
catch(IOException e){e.printStackTrace ();} *;m5^i<,;S
catch(Exception e){e.printStackTrace ();} xHJ+!
} /6gqpzum4
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//读取保存的下载信息(文件指针位置) 'hVOK(o0
private void read_nPos() :?RooJ~#
{ 3.Ni%FF`
try{ ORv[Gkq_N)
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); er+m:XuV
int nCount = input.readInt(); XsQ<yeun
nStartPos = new long[nCount]; Y%^&aac Z
nEndPos = new long[nCount]; =5oFutg`
for(int i=0;i<nStartPos.length;i++) }dAb}0XK.
{ 1#(,Bq4
nStartPos = input.readLong(); 2OAh7 '8<
nEndPos = input.readLong(); "%A/bv\u
} [LL"86D
input.close(); zO9$fU
} 9C-F%te7
catch(IOException e){e.printStackTrace ();} "2'nLQ""q
catch(Exception e){e.printStackTrace ();} d7It}7@9
} W2%(a0p
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private void processErrorCode(int nErrorCode) [9z<*@$-
{ bNevHKS
System.err.println("Error Code : " + nErrorCode); ^+mSf`5
} Nq9Qsia&
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//停止文件下载 h[C!cX
public void siteStop() yf3%g\k
{ yIXM}i:
bStop = true; ^(N+s?
for(int i=0;i<nStartPos.length;i++) .2.$Rq
fileSplitterFetch.splitterStop(); feIAgd},
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} f|Z3VS0x
} >f'nl
//负责部分文件的抓取 ^-~.L: }q
**FileSplitterFetch.java q_OIzZ@
*/ /w_Sc{
package NetFox; R@=ve
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import java.io.*; #ZCgpg$wM
import java.net.*; }C2I9Cl
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public class FileSplitterFetch extends Thread { H#m)`=nZSZ
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String sURL; //File URL .Z8 x!!Q*
long nStartPos; //File Snippet Start Position udp&