/* ;:9 x.IkxC
**SiteFileFetch.java EW4XFP4
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package NetFox; hBE}?J>
import java.io.*; l:HO|Mq
import java.net.*; ;lAz@jr+
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public class SiteFileFetch extends Thread { =WEfo;
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SiteInfoBean siteInfoBean = null; //文件信息Bean 3<+l.Wly
long[] nStartPos; //开始位置 4kg9R^0
long[] nEndPos; //结束位置 _n}!1(xYa`
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ]NAPvw#p
long nFileLength; //文件长度 iMp)g%Ng
boolean bFirst = true; //是否第一次取文件 m;
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boolean bStop = false; //停止标志 Gs?W7}<$
File tmpFile; //文件下载的临时信息 _-8,}F}W#s
DataOutputStream output; //输出到文件的输出流 82)d.>
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) )edM@beY_
public SiteFileFetch(SiteInfoBean bean) throws IOException =_yOX=g|
{ //+UQgl6
siteInfoBean = bean; RPiCXpJv&
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); i^IvT
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); c~RIl5j
if(tmpFile.exists ()) 5h>
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{ p[o2F5 T2
bFirst = false; `z=MI66Nl
read_nPos(); VS).!;>z
} ,OasT!Sr
else `a6;*r y
{ 2hu6
nStartPos = new long[bean.getNSplitter()]; mtOrb9`m
nEndPos = new long[bean.getNSplitter()]; ;OKQP~^iH2
} MW$9,[
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} u\E.H5u27
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public void run() 'QV4=h`
{ NFSPw`f
//获得文件长度 +.R-a+y3
//分割文件 (~OwO_|3
//实例FileSplitterFetch ~*[}O)7#
//启动FileSplitterFetch线程 & aLR'*]6
//等待子线程返回 -Qgfo|po
try{ n)=&=Uj`f
if(bFirst) Q.|2/6hD7[
{ JIQzP?+?
nFileLength = getFileSize(); k
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if(nFileLength == -1) YW}/C wB
{ -12v/an]L7
System.err.println("File Length is not known!"); o+t?OG/0
} ?SAi tQ3
else if(nFileLength == -2) dG rA18
{ L9kP8&&KK
System.err.println("File is not access!"); B 3h<K}
} CeJ|z{F\
else M`<D Z<:<
{ j;y|Ys)I
for(int i=0;i<nStartPos.length;i++) /0c&!OP
{ &qU[wn:1
nStartPos = (long)(i*(nFileLength/nStartPos.length)); Rk=B;
} C[pDPx,#:G
for(int i=0;i<nEndPos.length-1;i++) s_[?(Ip{
{ Iu[EUi!"
nEndPos = nStartPos[i+1]; Mm;)O'XDE
} pE<' '`
nEndPos[nEndPos.length-1] = nFileLength; !eq]V9
} Yru[{h8hw`
} xpxm9ySwu
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//启动子线程 OS
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fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; -Gpj^aBU
for(int i=0;i<nStartPos.length;i++) @CmxH(-i-
{ ?MYD}`Cv
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), a#IJ<^[8
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), GEA;9TU|V
nStartPos,nEndPos,i); v(^rq
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); i/~J0qQ
fileSplitterFetch.start(); t>fB@xHBB
} MH?B.2
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), T42g4j/l~
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); _:L*{=N
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", J]0#M:w&
nEndPos = " + nFileLength); =/;_7|ssd
// fileSplitterFetch[nPos.length-1].start(); *LRGfk+h
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//等待子线程结束 IMZKlU3
//int count = 0; 'dzp@-\
//是否结束while循环 L@Z
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boolean breakWhile = false; 4.'EEuRw\}
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while(!bStop) *ls6#j@
{ bwJi[xF
write_nPos(); WGmCQE[/c
Utility.sleep(500); eFQi
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breakWhile = true; 4Le5Ms/
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for(int i=0;i<nStartPos.length;i++) FQFENq''B
{ ej;taKzj
if(!fileSplitterFetch.bDownOver) pJz8e&wyLM
{ {yHfE,
breakWhile = false; o0'av+e7
break; \bOjb\ w$
} fhmr*E'J
} -z$0S%2?
if(breakWhile) .;b>
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break; uKy *N*}
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//count++; fn OkH
//if(count>4) d_uy;-3
// siteStop(); *u/|NU&X
} wIF
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System.err.println("文件下载结束!"); 1Q SIZoK7
} yU"G|Ex
catch(Exception e){e.printStackTrace ();} *fSM' q;
} %j">&U.[
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//获得文件长度 ogqV]36Idh
public long getFileSize() wsrx|n[]
{ V|\A?
int nFileLength = -1; dV{Hn {(
try{ DA$Q-
URL url = new URL(siteInfoBean.getSSiteURL()); ^Nw]'e3
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Jche79B
httpConnection.setRequestProperty("User-Agent","NetFox"); o%%x'uC
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int responseCode=httpConnection.getResponseCode(); 0:'jU
if(responseCode>=400) >iH).:j
{ zm+4Rl(
processErrorCode(responseCode); ]B3FTqR{i
return -2; //-2 represent access is error Qz+d[%Q}x
} 9*;isMkq<
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String sHeader; m5w9l"U]H
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for(int i=1;;i++) s2?,' es
{ `B\KS*Gya#
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); R+K&<Rz
//Utility.log(in.readLine()); x}<G!*3
sHeader=httpConnection.getHeaderFieldKey(i); o:8S$F`O@
if(sHeader!=null) n>:c}QAJH
{ 8EG8!,\I
if(sHeader.equals("Content-Length")) d Zz^9:C+
{ 9/daRq$
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); qM>OE8c#/
break; {O kik}Oh
} o+-Ge
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} >|/? Up
else udD*E~1q
break; 7 G[ GHc>
} 7e4tUAiuU
} SKSAriS~
catch(IOException e){e.printStackTrace ();} ~5 pC$SC6>
catch(Exception e){e.printStackTrace ();} #/t>}lc
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Utility.log(nFileLength); 1gShV ]2
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return nFileLength; +%}5{lu_e
} CDW(qq-zD
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//保存下载信息(文件指针位置) 3TiXYH
private void write_nPos() 7
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{ K;y\[2;}e,
try{ J4Z<Yt/
output = new DataOutputStream(new FileOutputStream(tmpFile)); k[ffs}
output.writeInt(nStartPos.length); :qCm71*
for(int i=0;i<nStartPos.length;i++) M,\|V3s
{ )/WA)fWkT
// output.writeLong(nPos); _UBJPb@=U
output.writeLong(fileSplitterFetch.nStartPos); $qlqWy-s
output.writeLong(fileSplitterFetch.nEndPos); p=-B~:
} F*4Qa
output.close(); bpF@}#fT
} |T$a+lHMD
catch(IOException e){e.printStackTrace ();} /[|}rqX(
catch(Exception e){e.printStackTrace ();} GATP
} )|Vg/S
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//读取保存的下载信息(文件指针位置) oj^5G
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private void read_nPos() KSgQ:_u4}
{ X[~f:E[1J
try{ [2QY
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); N}+B:l]Qy
int nCount = input.readInt(); K*Nb_|~
nStartPos = new long[nCount]; `z$uw
nEndPos = new long[nCount]; v;bM.OL
for(int i=0;i<nStartPos.length;i++) -Ty<9(~S
{ qN1e{T8u
nStartPos = input.readLong(); \9>g;qPg}
nEndPos = input.readLong(); #>E3' 5b
} J"D&q
input.close(); nXM9Px!
} lNh=>DPu
catch(IOException e){e.printStackTrace ();} ]*g ss'N
catch(Exception e){e.printStackTrace ();} (iCZz{l@~
} Nn,vdu{^2
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private void processErrorCode(int nErrorCode) '#McY'.D T
{ iO?gF
System.err.println("Error Code : " + nErrorCode); c+E//X|
} 0i`v:Lq%
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//停止文件下载 F;?TR[4!k
public void siteStop() (EOec5qXU
{ Lt;.Nw
bStop = true; ~4=]%XYz
for(int i=0;i<nStartPos.length;i++) ,<;l"v(
fileSplitterFetch.splitterStop(); M 5T=Fj86
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} (:&&;]sI
} X|-v0 f
//负责部分文件的抓取 |i}+t
**FileSplitterFetch.java >tmnj/=&
*/ S<y>Y
package NetFox; I5TQ>WJbf
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import java.io.*; 45r]wT(C
import java.net.*; vu_>U({.
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public class FileSplitterFetch extends Thread { uS:
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String sURL; //File URL .*RB~c
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long nStartPos; //File Snippet Start Position
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long nEndPos; //File Snippet End Position Ks49$w<
int nThreadID; //Thread's ID d$"G1u~%
boolean bDownOver = false; //Downing is over .KiPNTh'
boolean bStop = false; //Stop identical B%%.@[o,
FileAccessI fileAccessI = null; //File Access interface <?>I\
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException dDv{9D,
{ B&%L`v2[
this.sURL = sURL; RQj`9F
this.nStartPos = nStart; " ;-{~
this.nEndPos = nEnd; */%$6s~
nThreadID = id; YiIddQ
fileAccessI = new FileAccessI(sName,nStartPos);//定位 sW]yuu!/
} %Lh-aP{[e
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public void run() 2cs?("8e%
{ aJK-O"0/
while(nStartPos < nEndPos && !bStop) c{'$=lR "
{ ys&"r":I
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try{ /32Ta
URL url = new URL(sURL); '|YtNhWZ?
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); lF;ziF
httpConnection.setRequestProperty("User-Agent","NetFox"); 4)z3X\u|Z2
String sProperty = "bytes="+nStartPos+"-"; T8,k77
httpConnection.setRequestProperty("RANGE",sProperty); ALE808;|
Utility.log(sProperty); D:YN_J"kV
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InputStream input = httpConnection.getInputStream(); \b_-mnN"
//logResponseHead(httpConnection); otWo^CE$
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byte[] b = new byte[1024]; 92P,:2`a
int nRead; VRtbHam
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) &%|xc{i
{ i;[h
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nStartPos += fileAccessI.write(b,0,nRead); x\Nhix}1D
//if(nThreadID == 1) D 7Gd%
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); c^ixdk
} &_Cxv8
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Utility.log("Thread " + nThreadID + " is over!"); _N>wzkJ
bDownOver = true; kN'|,eKH4
//nPos = fileAccessI.write (b,0,nRead); w;N{>)hv
} LFEp
catch(Exception e){e.printStackTrace ();} /`7 I K
} E0sbU<11
} &GXtdO>;Zv
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//打印回应的头信息 ]h #WkcXQ
public void logResponseHead(HttpURLConnection con) GIl:3iB49
{ |RHO+J
for(int i=1;;i++) H/cs_i
{ |x1$b7
String header=con.getHeaderFieldKey(i); QDIsC
if(header!=null) xT{TVHdU
//responseHeaders.put(header,httpConnection.getHeaderField(header)); y,'FTP9?
Utility.log(header+" : "+con.getHeaderField(header)); <