/* >.Q0Tx!P
**SiteFileFetch.java v7@H\x*
*/ b~!om
package NetFox; ug6r]0]
import java.io.*; WzG07 2w
import java.net.*; *4#on>
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public class SiteFileFetch extends Thread {
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SiteInfoBean siteInfoBean = null; //文件信息Bean d5, FM
long[] nStartPos; //开始位置 7l}~4dm2J
long[] nEndPos; //结束位置 #v qz{R~nM
FileSplitterFetch[] fileSplitterFetch; //子线程对象 uAb 03Q
long nFileLength; //文件长度 k
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boolean bFirst = true; //是否第一次取文件 ry,}F@P&
boolean bStop = false; //停止标志 70<K.T<b
File tmpFile; //文件下载的临时信息 /s-d?
DataOutputStream output; //输出到文件的输出流 luF#OP C
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) G4yUC<TqBP
public SiteFileFetch(SiteInfoBean bean) throws IOException 5TET<f6R
{ s1@@o#r
siteInfoBean = bean; ew"m!F#
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Ao!=um5D J
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); -eYL*Pa
if(tmpFile.exists ()) nE<J`Wo$f
{ pU[K%@sC
bFirst = false; c+;S<g0
read_nPos(); jmPp-}tS7
} 4H7Oh*P\j
else IuWX*b`v
{ LO>8 j:
nStartPos = new long[bean.getNSplitter()]; !>|`ly$6
nEndPos = new long[bean.getNSplitter()]; cX"G7Bh
} iJ*%dio
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public void run() #]5)]LF1q
{ SW-0h4
//获得文件长度 ;Yu>82o.:
//分割文件 QZYM9a>
//实例FileSplitterFetch DD6 'M
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//启动FileSplitterFetch线程 A xR\ned
//等待子线程返回 &u4Ve8#
try{ i\Q":4
if(bFirst) PE7t_iSV
{
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nFileLength = getFileSize(); j~$)c)h"
if(nFileLength == -1) c8tP+O9
{ j5A\y^Kv
System.err.println("File Length is not known!"); "D!Dr1
} *hl<Y,W(
else if(nFileLength == -2) =KW|#]RB^
{ o7QK8#
System.err.println("File is not access!"); -sD:+Te
} rX)o3>q^?
else =~;zVP
{ *U2Ck<"]
for(int i=0;i<nStartPos.length;i++) 8\u;Wf
{ W-!dMa
nStartPos = (long)(i*(nFileLength/nStartPos.length)); 6z`8cI+LRw
} ]d~MEa9Y|
for(int i=0;i<nEndPos.length-1;i++) X
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{ aEZJNWv
nEndPos = nStartPos[i+1]; p?KCVvx$
} ~vkud+r
nEndPos[nEndPos.length-1] = nFileLength; 2"_ 18l.
} ` C ?a
} Cb<~i
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//启动子线程 q2D`1nT
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ;?#i]Bh>S
for(int i=0;i<nStartPos.length;i++) 6.vNe
{ r6<ArX$Yl
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), DvU~%%(0^
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), dfXV1B5
nStartPos,nEndPos,i); 2voNgY
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Z^C!RSQ
fileSplitterFetch.start(); @D2`*C9
} )8\Z=uC
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Vc{/o=1u
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Wa@6VY
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", $t%" Tr
nEndPos = " + nFileLength); *E$H;wKs8
// fileSplitterFetch[nPos.length-1].start(); @$_rEdwi
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//等待子线程结束 WJP`0f3
//int count = 0; r]xdhR5
//是否结束while循环 HL|0 d
}
boolean breakWhile = false; >hh"IfIZ4
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while(!bStop) X6n|Xq3k
{ `z5v}T
write_nPos(); #=>kw^5
Utility.sleep(500); vs*_;vx
breakWhile = true; A/r;;S)%2
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for(int i=0;i<nStartPos.length;i++) `,<>){c|
{ !<JG&9ODP
if(!fileSplitterFetch.bDownOver) ^$3w&$K*
{ HP1X\h!Ke
breakWhile = false; h%4~0
break; =r=^bNO
} hnlU,p&y3
} #IcT
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if(breakWhile) s#4))yUR6Z
break; 'Sm/t/g"|
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//count++; k B$lkl\C
//if(count>4) WllCcD1
// siteStop(); Zm?G'06
} .f [\G*
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System.err.println("文件下载结束!"); !!\4'Q[
} e/ppZ>
catch(Exception e){e.printStackTrace ();} 5k_Mj*{6
} *m2d#f
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//获得文件长度 #0#V$AA>
public long getFileSize() .oB'ttF1
{ y$"~^8"z
int nFileLength = -1; 4c9-[KKCV
try{ l93Q"*_
URL url = new URL(siteInfoBean.getSSiteURL()); c'm-XL_La
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); cJ1{2R
httpConnection.setRequestProperty("User-Agent","NetFox"); ,(5dQ` hA0
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int responseCode=httpConnection.getResponseCode(); X,Q6
if(responseCode>=400) `RL(N4H
{ `-E.n'+
processErrorCode(responseCode); gDjd{+LUo
return -2; //-2 represent access is error @vDgpb@TM
} UwzE'#Q-
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String sHeader; gs)%.k[BqG
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for(int i=1;;i++) d60Fi#3d
{ \^^hG5f
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 4%Z\G@0<'
//Utility.log(in.readLine()); P,+0
sHeader=httpConnection.getHeaderFieldKey(i); 3L\s8O
if(sHeader!=null) O=9V X
{ (&a3v
if(sHeader.equals("Content-Length")) \5v=pDd4g
{ ({}O
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); p3'mJ3MA
break; &'oacV=
} XJV3oj
} 2Q;Y@%G
else HtS1N}@
break; '44nk(hM69
} tS*^}e*
} bsmoLT
catch(IOException e){e.printStackTrace ();} [ a65VR~J
catch(Exception e){e.printStackTrace ();} /ltP@*bo
}rb ]d'|
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Utility.log(nFileLength); n=Z[w5
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return nFileLength; zMHf?HQ-Z
} 8u~\]1(
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//保存下载信息(文件指针位置) PK|`}z9
private void write_nPos() Z-;uzx
{ PSrt/y!
try{ %V" +}Dr
output = new DataOutputStream(new FileOutputStream(tmpFile)); E.G h@i
output.writeInt(nStartPos.length); k%4A::=
for(int i=0;i<nStartPos.length;i++) l%)=s~6z
{ yvH#1F`{q
// output.writeLong(nPos); %<#$:Qb.
output.writeLong(fileSplitterFetch.nStartPos); sD8xH
output.writeLong(fileSplitterFetch.nEndPos); sou$qKoG01
} \?`d=n=
output.close(); ,BN}H-W\2
} 9"u@<]
catch(IOException e){e.printStackTrace ();} C`K9WJOD
catch(Exception e){e.printStackTrace ();} qjRiTIp9q
} :4L5@>b-
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//读取保存的下载信息(文件指针位置) ![MDmt5Ub^
private void read_nPos() L)//-
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{ Y=wP3q
try{ @_weMz8}
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); yK2*~T,6@
int nCount = input.readInt(); 7{/:,
nStartPos = new long[nCount]; rF
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nEndPos = new long[nCount]; '<E8<bi
for(int i=0;i<nStartPos.length;i++) Xrzh*sp
{ RAkFgC~
nStartPos = input.readLong(); k:uuJ|
nEndPos = input.readLong(); TB3T:A>2
} ?jM7C}
input.close(); <t|9`l_XW
} 1V9X(uP
catch(IOException e){e.printStackTrace ();} 2b&;Y /z
catch(Exception e){e.printStackTrace ();} F~- S3p
} e4_aKuA
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private void processErrorCode(int nErrorCode) XU })3]/
{ :DF4g=
System.err.println("Error Code : " + nErrorCode); YKS'#F2
} $Q7E#
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//停止文件下载 UDi3dH=
public void siteStop() zSM7x
{ m$UT4,Ol
bStop = true; _"t.1+-K
for(int i=0;i<nStartPos.length;i++) %TggNU,
fileSplitterFetch.splitterStop(); R*5;J`TW
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} KUqS(u
} )p_LkX(
//负责部分文件的抓取 Z*Hxrw\!0
**FileSplitterFetch.java S2GBX1
*/ ?g*T3S"
package NetFox; HyYQQ
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import java.io.*; jN[6JY1
import java.net.*; 21EUP6}8j
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public class FileSplitterFetch extends Thread { z00:59M4
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String sURL; //File URL >-o:>
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long nStartPos; //File Snippet Start Position cz~FWk
long nEndPos; //File Snippet End Position %v)'`|i
int nThreadID; //Thread's ID M&T/vByTn_
boolean bDownOver = false; //Downing is over vo<#sa^,j
boolean bStop = false; //Stop identical 8BH)jna`Qo
FileAccessI fileAccessI = null; //File Access interface 1? hd
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException /lok3J:
{ Gqc6).tn
this.sURL = sURL; H+&w