/* tU0jFBB
**SiteFileFetch.java m "96%sB
*/ 89x;~D1
package NetFox; ?$#P
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import java.io.*; UM<!bNz`
import java.net.*; 8j)*T9
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public class SiteFileFetch extends Thread { R PdFLC/
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SiteInfoBean siteInfoBean = null; //文件信息Bean E[cH/Rm
long[] nStartPos; //开始位置 u|cP&^S
long[] nEndPos; //结束位置 F:og :[
FileSplitterFetch[] fileSplitterFetch; //子线程对象 01~
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long nFileLength; //文件长度 SuXeUiK.[
boolean bFirst = true; //是否第一次取文件 '+\t,>nRkl
boolean bStop = false; //停止标志 x~Dj2F ]
File tmpFile; //文件下载的临时信息 JwQ/A[b
DataOutputStream output; //输出到文件的输出流 =~>g--^U
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) sYbmL`{
public SiteFileFetch(SiteInfoBean bean) throws IOException SBI*[
{ nS](d2
siteInfoBean = bean; i5aY{3!
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); G@txX
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tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ~@DdN5
if(tmpFile.exists ()) x4K A8
{ @N]]Cf>x
bFirst = false; Lg~ll$
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read_nPos(); O-huC:zZh
} m}7Nu
else cn Ohj
{ A*g-pJh
nStartPos = new long[bean.getNSplitter()]; msY6zJc`
nEndPos = new long[bean.getNSplitter()]; Y?$
} 'Y.6sB
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} RO@=&3s
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public void run() p| ?FA@ 3
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//获得文件长度 w+wtr[;wwL
//分割文件 d<6m_!L
//实例FileSplitterFetch CXi[$nF3
//启动FileSplitterFetch线程 md,KRE
//等待子线程返回 A $i^/hJs
try{ q[GDK^-g
if(bFirst) LmytO$?2(
{ fm L8n<1
nFileLength = getFileSize(); d8iq9AP\o
if(nFileLength == -1) 6bPl(.(3
{ 0U~*uDU
System.err.println("File Length is not known!"); jtUqrJFlQ
} &isKU8n
else if(nFileLength == -2) AvPPsN0
{ rzs-c ?
System.err.println("File is not access!"); )xiu
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} }V[ORGzox
else l6L?jiTl_
{ Z&79: 9=#>
for(int i=0;i<nStartPos.length;i++) h-kmZ<p|^
{ QYi4A"$`
nStartPos = (long)(i*(nFileLength/nStartPos.length)); Tw7]
} lF_"{dS_6(
for(int i=0;i<nEndPos.length-1;i++) -QwH|
{ px*1 3"
nEndPos = nStartPos[i+1]; XDHi4i47`o
} 050,S`%<g8
nEndPos[nEndPos.length-1] = nFileLength; tHAe
} gJCZ9{Nl
} }8POm#
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//启动子线程 ~d].<Be
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; i(_A;TT6
for(int i=0;i<nStartPos.length;i++) 8NiR3*1
{ tJybR"NQ
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), h[&"KA
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), `<7!Rh,tS^
nStartPos,nEndPos,i); Ij$C@hH
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); T@Y, 7ccpd
fileSplitterFetch.start(); yYaoA/0
} G[`1Yw$
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), o+B)
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); @Ns[qn;9
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", kY @(-
nEndPos = " + nFileLength); L7d1)mV
// fileSplitterFetch[nPos.length-1].start(); 0{g*\W*+~
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//等待子线程结束 Z %Ozzp/
//int count = 0; DzQ
//是否结束while循环 </WeB3#6
boolean breakWhile = false; xDGS`o_w_
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while(!bStop) N0.|Mb"?t
{ 4l+!Z, b
write_nPos(); R(`:~@3\6
Utility.sleep(500); 15,JD
breakWhile = true; '3Lu_]I-
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for(int i=0;i<nStartPos.length;i++) I O:*F0
{ h%krA<G9
if(!fileSplitterFetch.bDownOver) w4vV#C4X
{ Rd&DH_<+^
breakWhile = false; BBRL_6
break; xC,x_:R`
} bh<;px-
} Vv45w#w;
if(breakWhile) !t^DN\\#
break; e=WjFnK[x7
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//count++; 3f] ;y<Km
//if(count>4) pK@=]K~l0
// siteStop(); USEb} M`
} 0z8?6~M;<
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System.err.println("文件下载结束!"); w?8SQI,~X
} ;~EQS.Qp
catch(Exception e){e.printStackTrace ();} mAtqF
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} EU %,tp
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//获得文件长度 %'yrIR
public long getFileSize() <;6{R#Tuh
{ {]< G=]'
int nFileLength = -1; 8o$rF7.-
try{ eHuJFM
URL url = new URL(siteInfoBean.getSSiteURL()); Bchv1KF
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); I I+y
httpConnection.setRequestProperty("User-Agent","NetFox"); l6ym <V(1p
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int responseCode=httpConnection.getResponseCode(); Zgo~"G
if(responseCode>=400) IHni1
{ A~2)ZdAN
processErrorCode(responseCode); wQSye*ec
return -2; //-2 represent access is error #GE]]7:Na
} Q$c6l[(g
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String sHeader; FfdB%
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for(int i=1;;i++) Do/R.Mgy*
{ YV<y-,Io
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); |oi+|r
//Utility.log(in.readLine()); #wI}93E
sHeader=httpConnection.getHeaderFieldKey(i); ?T/]w-q>
if(sHeader!=null) _x!idf
{ a%T`c/C
if(sHeader.equals("Content-Length")) #;]#NqFX
{ STp9Gh-
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); RpQeQM=
break; vR!+ 8sy$
} P>VoA
} Aqmpo3P[+
else hMa; \ k
break; Y~WdN<g
} %_ibe
} jYHn J}<
catch(IOException e){e.printStackTrace ();} *nCA6i
catch(Exception e){e.printStackTrace ();} QB*,+u4
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Utility.log(nFileLength); 2.D2
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return nFileLength; ;xZ+1zmL0
} _MBhwNBxZ
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//保存下载信息(文件指针位置) xB
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private void write_nPos() `tk oS
{ gQy%T]
try{ C !j3@EZ$
output = new DataOutputStream(new FileOutputStream(tmpFile)); "do5@$p|
output.writeInt(nStartPos.length); 3iCe5VF
for(int i=0;i<nStartPos.length;i++) S,c{LTL
{ 42NfD/"g+s
// output.writeLong(nPos); U.e!:f4{
output.writeLong(fileSplitterFetch.nStartPos); --K)7
output.writeLong(fileSplitterFetch.nEndPos); !l (Vk
} T$5wH )<
output.close(); L4>14D\
} 9>)b6)J D
catch(IOException e){e.printStackTrace ();} ^kKLi
catch(Exception e){e.printStackTrace ();} )9YDNVo*-
} ZnEgU}g<2
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//读取保存的下载信息(文件指针位置) OS(`H5D
private void read_nPos() .z>/A/&+
{ B\J[O5},
try{ j&8YE7
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 6}^x#9\
int nCount = input.readInt(); y2A\7&7
nStartPos = new long[nCount]; ]9oj,k
nEndPos = new long[nCount]; >C0B!MT?3%
for(int i=0;i<nStartPos.length;i++) 16iTE-J_
{ UPhO=G
nStartPos = input.readLong(); *k{Llq
nEndPos = input.readLong(); h`&TDB2
} Kxsd@^E
input.close(); zg2d}"dV
} aTvyzr1
catch(IOException e){e.printStackTrace ();} oGcgd$%ZB
catch(Exception e){e.printStackTrace ();} _Xf1FzF+a
} Y&6jFT_
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private void processErrorCode(int nErrorCode) b~gq8,Fatb
{ ynsYU(
System.err.println("Error Code : " + nErrorCode); TGJz[Ny
} ,}t%7I
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//停止文件下载 K*@?BE
public void siteStop() Q9bnOvKe|
{ xA3_W
bStop = true; n!4}Hwz!
for(int i=0;i<nStartPos.length;i++) n{?Du
fileSplitterFetch.splitterStop(); V%R]jbHZ#
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} ,RPb<3
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} 7P$*qj~Vh
//负责部分文件的抓取 ?NoNg^ Of
**FileSplitterFetch.java Otq3nBZ
*/ IVxJN(N^
package NetFox; -M{szH
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import java.io.*; $O |Xq7dp
import java.net.*; #un'?]tZF
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public class FileSplitterFetch extends Thread { B&MDn']fV/
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String sURL; //File URL !XTzsN
long nStartPos; //File Snippet Start Position
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long nEndPos; //File Snippet End Position 3~sV-
int nThreadID; //Thread's ID [Q T ;~5
boolean bDownOver = false; //Downing is over \n}%RD-Ce
boolean bStop = false; //Stop identical \#[DZOI~
FileAccessI fileAccessI = null; //File Access interface [vr"FLM|9
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException
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{ (6fD5XtS
this.sURL = sURL; -c>3|bo
this.nStartPos = nStart; ndQw>
this.nEndPos = nEnd; PcsYy]Q/
nThreadID = id; Bl>m`/\1i
fileAccessI = new FileAccessI(sName,nStartPos);//定位 ;1~ n|IY
} nKE^km
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public void run() s(X\7Hz_nC
{ `C4(C4u
while(nStartPos < nEndPos && !bStop) >:.c?{%g*
{ ^2dQVV.
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try{ /R|?v{S1
URL url = new URL(sURL); Da<`|
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); @Mya|zb
httpConnection.setRequestProperty("User-Agent","NetFox"); B}7j20:Z
String sProperty = "bytes="+nStartPos+"-"; Ifp8oL? S;
httpConnection.setRequestProperty("RANGE",sProperty); %0&,_jM/9
Utility.log(sProperty); 5]G%MB/|$
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InputStream input = httpConnection.getInputStream(); U9BhtmY
//logResponseHead(httpConnection); %]F/!n
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byte[] b = new byte[1024]; /\,3AInLb
int nRead; 7jw+o*;
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) uBG!R#T
{ mBL?2~M
nStartPos += fileAccessI.write(b,0,nRead); g8/ ,E-u
//if(nThreadID == 1) }>iNT.Lvd
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 8A0a/
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} }#<Rs
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Utility.log("Thread " + nThreadID + " is over!"); y=Eb->a){
bDownOver = true; 3B]E2
//nPos = fileAccessI.write (b,0,nRead); #+<YFm\i
} x'-gvbj!
catch(Exception e){e.printStackTrace ();} ;~1xhpTk
} w.rcYywI
} B|o@|zF
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