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**SiteFileFetch.java 'ySWf,Q^
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package NetFox; k3Y>QN|q8
import java.io.*; 79Iz,_
import java.net.*; 4):\,>%pK
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public class SiteFileFetch extends Thread { vUW !
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SiteInfoBean siteInfoBean = null; //文件信息Bean 9i"3R0HN
long[] nStartPos; //开始位置 V!oyC$eV
long[] nEndPos; //结束位置 DQ,Q yV
FileSplitterFetch[] fileSplitterFetch; //子线程对象 Z/64E^
long nFileLength; //文件长度 4m~\S)ad
boolean bFirst = true; //是否第一次取文件 ,[A} 86
boolean bStop = false; //停止标志 ' _N >
File tmpFile; //文件下载的临时信息 `/"z. ~8
DataOutputStream output; //输出到文件的输出流 {#7t(:x
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) NY_Oo!)3
public SiteFileFetch(SiteInfoBean bean) throws IOException @wpm;]
{ ioZ2J"s
siteInfoBean = bean; mCg 5-E~;
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); HGPbx$!
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); qoEOM%dAqV
if(tmpFile.exists ()) e Q0bx&
{ ieObo foD
bFirst = false; &4]%&mX)-
read_nPos(); pt<84CP
} ~ejHA~QC
else 2(UT;PSI
{ 9!o:)99U
nStartPos = new long[bean.getNSplitter()]; %!WQ;(
nEndPos = new long[bean.getNSplitter()]; :kgwKuhL
} a-hF/~84S:
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} WWD\EDnS
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public void run() pS51fF9
{ 8^+Qn/b_%
//获得文件长度 R\6#J0&Y-
//分割文件 |rsu+0Mtz
//实例FileSplitterFetch O75ioO0
//启动FileSplitterFetch线程 D_'Zucq
//等待子线程返回 0^zu T
try{ C}wmoYikV
if(bFirst) [S'ngQ"f`
{ W)o-aX!P
nFileLength = getFileSize(); P oC*>R8
if(nFileLength == -1) i |cSO2O+
{ ln9U>*<
System.err.println("File Length is not known!"); )J5(M`
} n&k1'KL&
else if(nFileLength == -2) Ws'3*HAce
{ ."cC^og
System.err.println("File is not access!"); pl'n
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} ?2QssfB
else DL<r2h
{ (7&[!PS
for(int i=0;i<nStartPos.length;i++) WY #pzBA
{ kC6J@t)
nStartPos = (long)(i*(nFileLength/nStartPos.length)); a'W-& j
} Y[@$1{YS
for(int i=0;i<nEndPos.length-1;i++) nTp?
{ Tj@s \@hv
nEndPos = nStartPos[i+1]; XoL9:s(m~
} n*hHqZl
nEndPos[nEndPos.length-1] = nFileLength; (hs[B4nV
} ' !ZFK}
} 89?AcZ.D
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//启动子线程 !Zlvz%X
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; t@.M;b8
for(int i=0;i<nStartPos.length;i++) ]t(;bD hT
{
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Ks7DoXCvE
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), CZuV{Oh}?
nStartPos,nEndPos,i); =T|Z[/fto
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); grp1nWAs
fileSplitterFetch.start(); T\NvN&h-
} 2a3i]e5Kt
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), now\-XrS
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); |Rf4^vN
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", %D:Mt|
nEndPos = " + nFileLength); &>XIK8*
// fileSplitterFetch[nPos.length-1].start(); ~kj1L@gy
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//等待子线程结束 YQ:FBj
//int count = 0; c!d>6:\
//是否结束while循环 Hw-,sze j"
boolean breakWhile = false; E%FCOKw_
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while(!bStop) TO ^}z
{ A(S =
write_nPos(); 0O5(\8jM
Utility.sleep(500); }\!&3^I
breakWhile = true; \#?n'qyj
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for(int i=0;i<nStartPos.length;i++) iaPrkMhd
{ eo.y,U h
if(!fileSplitterFetch.bDownOver) T:p,!?kc7
{ =87.6Ai
breakWhile = false; (,z0V+!
break; Hpo7diBE
} 65X$k]x
} X458%)G!(K
if(breakWhile) yqi=9NB
break; +nU"P
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//count++; mF7T=pl
//if(count>4) $Hh3*reSg-
// siteStop(); zX*+J"x
} MLf,5f;e
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System.err.println("文件下载结束!"); DlIy'@ .
} Pp.qDkT
catch(Exception e){e.printStackTrace ();} YaI8hj@}
} Ry2rQM`
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//获得文件长度 aMI\gCB/
public long getFileSize() WB~
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{ S,A\%:Va
int nFileLength = -1; :j2G0vHIl(
try{ zOO:`^ m
URL url = new URL(siteInfoBean.getSSiteURL()); ]"? +R+
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 2@ 4^ 81
httpConnection.setRequestProperty("User-Agent","NetFox"); lrQ +G@#
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int responseCode=httpConnection.getResponseCode(); ^,F8 ha
if(responseCode>=400) AWSe!\b
{ E{_$C!.
processErrorCode(responseCode); wa/
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return -2; //-2 represent access is error 3%c{eZxG=
} 9nIBs{`/Ac
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String sHeader; DSiI%_[Ud
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for(int i=1;;i++) ,#;%ILF4%
{ s+m,ASj
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); G;r-f63N
//Utility.log(in.readLine()); uEp
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sHeader=httpConnection.getHeaderFieldKey(i); DxX333vC
if(sHeader!=null) NKae~ 1b
{ eLC}h %
if(sHeader.equals("Content-Length")) Sg$14B
{ |/LCwq%
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); @H'pvFLK?
break; Ga
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} X[pk9mha
} sR%,l
else K.CwtUt`54
break; T/8*c0mU
} "b6ZAgxv
} NUiNn 7C
catch(IOException e){e.printStackTrace ();} _Se~bkw?v
catch(Exception e){e.printStackTrace ();} TMsEHd
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Utility.log(nFileLength); bY6y)l
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return nFileLength; G(piq4D
} ((BuBu>
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//保存下载信息(文件指针位置)
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private void write_nPos() (+g!~MP
{ S9Kay'.aJ(
try{ qG S]2KY
output = new DataOutputStream(new FileOutputStream(tmpFile)); <{\UE~
output.writeInt(nStartPos.length); @C),-TM
for(int i=0;i<nStartPos.length;i++) =\IcUY,4
{ E%L]ifA9!
// output.writeLong(nPos); =d_@k[8<0
output.writeLong(fileSplitterFetch.nStartPos); BS }uv3
output.writeLong(fileSplitterFetch.nEndPos); ?&Y3Fr)%
} sePOW#|
output.close(); @Bfwb?&
} maANxSzi
catch(IOException e){e.printStackTrace ();} h%kB>E~
catch(Exception e){e.printStackTrace ();} _"`wUMee
} % ~%>3
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//读取保存的下载信息(文件指针位置) GiBq1U-Q
private void read_nPos() GXaCH))TO
{ "HR
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try{ ["N>Po
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); _\ n'uW$
int nCount = input.readInt(); p\e*eV1dxx
nStartPos = new long[nCount]; Rs;,_
nEndPos = new long[nCount]; h+$1+Es
for(int i=0;i<nStartPos.length;i++) _:om(gL
{ Py 8o8* H
nStartPos = input.readLong(); {pU Ou8`Z
nEndPos = input.readLong(); cXcn}gKV
} [_j.pMH/P
input.close(); n15c1=gs
} WPyd ^Y<
catch(IOException e){e.printStackTrace ();} /B!"\0G/,
catch(Exception e){e.printStackTrace ();} "z^Ysvw&~
} ^sH1YE}0
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private void processErrorCode(int nErrorCode) iZ[o2Tre
{ ?AY596
System.err.println("Error Code : " + nErrorCode); w`1qx;/!
} > ^3xBI:Q
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//停止文件下载 ' 7>}I{Lq
public void siteStop() ]@ETQ8QN
{ ^f!d8
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bStop = true; wSIt"g,%
for(int i=0;i<nStartPos.length;i++) #:Cr'U
fileSplitterFetch.splitterStop(); C bG"8F|4
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} *GuCv3|
} bz H5Lc {%
//负责部分文件的抓取 +cy(}Vp
**FileSplitterFetch.java !l6B_[!@
*/ \ox:/-[c\<
package NetFox; lW&glU(
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import java.io.*; +}4vdi"
import java.net.*; :CHCVoh@95
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public class FileSplitterFetch extends Thread { [4xN:i
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String sURL; //File URL J+DuQ;k;
long nStartPos; //File Snippet Start Position L1)?5D
long nEndPos; //File Snippet End Position 'zT/x`V
int nThreadID; //Thread's ID |7%$+g
boolean bDownOver = false; //Downing is over S2jo@bp!
boolean bStop = false; //Stop identical Hg(\EEe
FileAccessI fileAccessI = null; //File Access interface E? F @
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException z
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this.sURL = sURL; )J#@L*
this.nStartPos = nStart; B u4N~0
this.nEndPos = nEnd; 8-8=
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nThreadID = id; f "Iv
fileAccessI = new FileAccessI(sName,nStartPos);//定位 }
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} }3[ [ONA
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public void run() TS3 00F
{ 2?
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while(nStartPos < nEndPos && !bStop) Pi*,&D>{7
{ 1YnDho;~
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