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**SiteFileFetch.java <R7{W"QTA)
*/ Zo<)r2|O.
package NetFox; <a"(B*bBd
import java.io.*; U3{<+vSR`
import java.net.*; Z<i}XCE
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public class SiteFileFetch extends Thread { 2R&\qZ<
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SiteInfoBean siteInfoBean = null; //文件信息Bean r'OqG^6JFN
long[] nStartPos; //开始位置 SUc%dpXZa
long[] nEndPos; //结束位置 UH!(`Z\C
FileSplitterFetch[] fileSplitterFetch; //子线程对象 W~
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long nFileLength; //文件长度 W#F9Qw
boolean bFirst = true; //是否第一次取文件 Hh1_zd|
boolean bStop = false; //停止标志 XGB\rfvS
File tmpFile; //文件下载的临时信息 =wh[D$n$~
DataOutputStream output; //输出到文件的输出流 e_=K0fFz
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) kkq1:\pZ]a
public SiteFileFetch(SiteInfoBean bean) throws IOException ab2FK
{ ]bY|>q
siteInfoBean = bean; GOc
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); MT-Tt
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Zk=,`sBC
if(tmpFile.exists ()) iwK.*07+
{ <gF]9%2E
bFirst = false; (bb!VVA
read_nPos(); *]]Zpa6
} 7[1Lh'u
else SboHo({5VA
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nStartPos = new long[bean.getNSplitter()]; sF
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nEndPos = new long[bean.getNSplitter()]; 0SI@`C*1o
} 1B4Qj`:+0
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public void run() 1CB&z@
{ 5s[nE\oaG
//获得文件长度 J# (AX6
//分割文件 ]{1{XIF
//实例FileSplitterFetch `MU~N_
//启动FileSplitterFetch线程 $,}jz.R@
//等待子线程返回 'zI(OnIS
try{ p / ITg
if(bFirst) "#~>q(4^
{ w5%Yi{
nFileLength = getFileSize(); "
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if(nFileLength == -1) TPN+jK
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System.err.println("File Length is not known!"); $%~JG(
} OD8
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else if(nFileLength == -2) uN`/&_$c
{ 8qyEHUN2q
System.err.println("File is not access!"); UMGiJO\yH
} 0fOhCxtL@
else ]*=4>(F[
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for(int i=0;i<nStartPos.length;i++) MKBDWLCB
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); JXc.?{LL
} 3uuIISK
for(int i=0;i<nEndPos.length-1;i++) m{Q
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nEndPos = nStartPos[i+1]; X!]v4ma`
} 9nG^_.}|
nEndPos[nEndPos.length-1] = nFileLength; 2o SM|
} XO
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} h5P_kZJ
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//启动子线程 P6v ANL-B
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; { M**a
for(int i=0;i<nStartPos.length;i++) 1&dtq,|N
{ E=8'!
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), zy,SL
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 83vMj$P
nStartPos,nEndPos,i); `dvg5qQ
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 3}|[<^$
fileSplitterFetch.start(); ,\M77V
} YlrN^rO
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), K0gQr.J53
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ]X6<yzu&+l
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ;%e)t[5
nEndPos = " + nFileLength); 4LTm&+(5
// fileSplitterFetch[nPos.length-1].start(); %,T*[d&i
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//等待子线程结束 ,:t,$A
//int count = 0; vJ&_-CX
//是否结束while循环 k'o[iKlu
boolean breakWhile = false; (ghI$oH
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while(!bStop) A*OqUq/H`;
{ -#ZLu.
write_nPos(); *`H*@2
Utility.sleep(500); ,6>3aD1w~q
breakWhile = true; =z'(FP5!0
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for(int i=0;i<nStartPos.length;i++) TE
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{ F vkyp"W3
if(!fileSplitterFetch.bDownOver) wKM9fs
{ =|?`5!A
breakWhile = false; P73GH
break; qX@e+&4P0
} /PwiZA3sA
} %/A>'p,~
if(breakWhile) 16L YVvmW
break; O(-p
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//count++; -.h)CM@L
//if(count>4) vD#U+
// siteStop();
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} l eC!Yj
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System.err.println("文件下载结束!"); ,j_js8r
} lx|Aw@C3~
catch(Exception e){e.printStackTrace ();} R%jOgZG
} z x-[@G
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//获得文件长度 NW[K/`-CTH
public long getFileSize() 0"R>:f}
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int nFileLength = -1; H7+"BWc
try{ bWo
URL url = new URL(siteInfoBean.getSSiteURL()); M_E,pg=rWI
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 3'z$@;Ev+
httpConnection.setRequestProperty("User-Agent","NetFox"); ogFo/TKM
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int responseCode=httpConnection.getResponseCode(); vqeH<$WHvy
if(responseCode>=400) *p(_="J,
{ $}&a*c>
processErrorCode(responseCode); bLg!LZ|S0s
return -2; //-2 represent access is error U"r*kO%
} _WZx].|A=
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String sHeader; Jinh#iar
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for(int i=1;;i++) in1rDN%Vi
{ D)-LZbPa
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Jt[ug26
//Utility.log(in.readLine()); |?88EG@05
sHeader=httpConnection.getHeaderFieldKey(i); Ge2Klyi
if(sHeader!=null) 0S5xmEzop
{ 1?.CXqK
if(sHeader.equals("Content-Length")) *HD(\;i-$
{ M`&t=0D
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); -PPwX~;!
break; Z,)H f
} }eLApFHEDg
} GKoYT{6
else |XB<vj07G
break; *F( qg%1+
} 'UX^]
} ~<_#%R!
catch(IOException e){e.printStackTrace ();} S>dHBR#AD
catch(Exception e){e.printStackTrace ();} V48_aL
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Utility.log(nFileLength); pb97S^K[
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return nFileLength; lR %#R
} A$wC!P|;
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//保存下载信息(文件指针位置) 3P0z$jh"H
private void write_nPos() \aJ>?
{ Pn9".
try{ Vo"G@W)lZ
output = new DataOutputStream(new FileOutputStream(tmpFile)); r-T1^u
output.writeInt(nStartPos.length); `<tRfl}qs
for(int i=0;i<nStartPos.length;i++) kqeEm{I
{ c^w^'<
// output.writeLong(nPos); 4pL'c@'
output.writeLong(fileSplitterFetch.nStartPos); vl/!w2
output.writeLong(fileSplitterFetch.nEndPos); }[eUAGhDU
} Zz} o t
output.close(); PY.HZ/#d
} Kl. *Q
catch(IOException e){e.printStackTrace ();} G
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catch(Exception e){e.printStackTrace ();} t`6]eRR
} $ #!oejLD
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//读取保存的下载信息(文件指针位置) Q9cSrU[$
private void read_nPos() ,[
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{ cpk\;1&t
try{ =Z.0-C>W
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Sd6O?&(
int nCount = input.readInt(); 7Q!ksp
nStartPos = new long[nCount]; %i?
nEndPos = new long[nCount]; Py*WHHO
for(int i=0;i<nStartPos.length;i++) bg|$1ue
{ j*QdD\)
nStartPos = input.readLong(); S5JMt;O
nEndPos = input.readLong(); )L&y@dy)
} H{=]94
input.close(); q&:7R
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} fExFpR,`
catch(IOException e){e.printStackTrace ();} &~eCDlX/
catch(Exception e){e.printStackTrace ();} [lIX&!T"
} d>Tv?'o`q
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private void processErrorCode(int nErrorCode) V~PGmn[V
{ E#P#{_BR^
System.err.println("Error Code : " + nErrorCode); ;C-ds
} }h1BAKg
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//停止文件下载 ,xU#uyB
public void siteStop() S(3h{Y"#
{ E0qJ.v
bStop = true; 3sV$#l P
for(int i=0;i<nStartPos.length;i++) &7'=t6
fileSplitterFetch.splitterStop(); F+Kju2
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} uyEk1)HC
} QV."ZhL5 =
//负责部分文件的抓取 7y^)n<'co
**FileSplitterFetch.java npeL1zO-$
*/ O$z"`'&j#
package NetFox; d %}?%VH
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import java.io.*; C+\z$/q
import java.net.*; MY{Kq;FvRP
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public class FileSplitterFetch extends Thread { +_ehzo97
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String sURL; //File URL y:\<FLR}j
long nStartPos; //File Snippet Start Position T}\>8EEG
long nEndPos; //File Snippet End Position !=30s;-
int nThreadID; //Thread's ID ~98q1HgS]D
boolean bDownOver = false; //Downing is over #U0| j?!D
boolean bStop = false; //Stop identical BUZ74
FileAccessI fileAccessI = null; //File Access interface [e,xC!2
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 7VfXE/
{ H`<u2fo|p
this.sURL = sURL; 1<h@^s ;
this.nStartPos = nStart; /7B3z}rd
this.nEndPos = nEnd; +Q"s!\5
nThreadID = id; &K!0yR
fileAccessI = new FileAccessI(sName,nStartPos);//定位 _&(Wz0
} 7/&t