/* XXPn)kmWR
**SiteFileFetch.java 9kHVWDf
*/ %PM&`c98z7
package NetFox; "ngULpb{R
import java.io.*; JlR$"GU
import java.net.*; ~@ =(#tO.
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public class SiteFileFetch extends Thread { EMQGP<[
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SiteInfoBean siteInfoBean = null; //文件信息Bean G%iTL"6
long[] nStartPos; //开始位置 %e^GfZ
long[] nEndPos; //结束位置 ,4:=n$e 0
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ' Dp;fEU$
long nFileLength; //文件长度 o=J-Ju
boolean bFirst = true; //是否第一次取文件 %
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boolean bStop = false; //停止标志 d^MRu#]
File tmpFile; //文件下载的临时信息 'b)qP|
DataOutputStream output; //输出到文件的输出流 DK)T2{:
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) O,6Wdw3+-3
public SiteFileFetch(SiteInfoBean bean) throws IOException MH=7(15R
{ P q0%oz
siteInfoBean = bean; .V4-
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); (Zg'])
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 50_[n$tqE
if(tmpFile.exists ()) plL|Ubn
{
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bFirst = false; NNt
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read_nPos(); i/j53towe
} CRBj>
else Z<^;Ybw{`Z
{ w=pr?jt1:
nStartPos = new long[bean.getNSplitter()]; 'X<4";$mU
nEndPos = new long[bean.getNSplitter()]; m8@&-,T
} !iO2yp
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} w4(L@1
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public void run() +F-EgF+J
{ b7XB l
//获得文件长度 4
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//分割文件 2n)?)w]!M
//实例FileSplitterFetch p^CTHk_|
//启动FileSplitterFetch线程 85YUqVi9
//等待子线程返回 84vd~Cf9
try{ aaP_^m O
if(bFirst) NV7k@7_{B
{ !_vxbfZO
nFileLength = getFileSize(); SE'!j]6jI
if(nFileLength == -1) Z\?2"4H
{ N_IKH)
System.err.println("File Length is not known!"); Cb1w8l0
} LH)XD[
else if(nFileLength == -2) I)tiXcJw
{ ]?pQu '-(
System.err.println("File is not access!"); (`S^6-^
} ia7<AwV
else m8ts!6C
{ DmpT<SI+!
for(int i=0;i<nStartPos.length;i++) H1I^Vij
{ -8xf}v~u
nStartPos = (long)(i*(nFileLength/nStartPos.length)); Wl |5EY
} As< B8e]
for(int i=0;i<nEndPos.length-1;i++) +x(#e'6p
{ R*:>h8
nEndPos = nStartPos[i+1]; [% C,&h5
} s bj/d~$N
nEndPos[nEndPos.length-1] = nFileLength; H T|DT
} Keozn*fzI
} 'C/yQvJ
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//启动子线程 oQ 2$z8
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; )rq |t9kix
for(int i=0;i<nStartPos.length;i++) >~SS^I0
{ r/2=
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 5?lc%,-&
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ^Jp,&
nStartPos,nEndPos,i); )V\@N*L`ik
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); TWzLJ63*
fileSplitterFetch.start(); 1h&`mqY)L.
} IdQ./@?
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), X/yq<_ g
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); p&h?p\IF
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", z Fo11;*D
nEndPos = " + nFileLength); Zge(UhZ
// fileSplitterFetch[nPos.length-1].start(); H+4j.eVzZU
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//等待子线程结束 3''Sx8p
//int count = 0; q0iJy@?A
//是否结束while循环 maXg(Lu
boolean breakWhile = false; d'RvpoM
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while(!bStop) g1s%x=7/
{ 8NWo)y49H
write_nPos(); pFv u,Q"
Utility.sleep(500); X H-_tvB
breakWhile = true; HeOdCr-PN
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for(int i=0;i<nStartPos.length;i++) r3W3;L
{ 4f([EV[6dK
if(!fileSplitterFetch.bDownOver) lH}KFFbp
{ c-sjYJXKM*
breakWhile = false; {_QdB;VwH
break; FQ]/c#J
} zaqX};b
} xG9Sk
if(breakWhile) 6qWUo3
break; ;]u9o}[
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//count++; DN*5q9.
//if(count>4) =~B"8@B
// siteStop(); CMXF[X)%
} AcC &Q:g
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System.err.println("文件下载结束!"); 8]ZzO(=@{
} .T|
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catch(Exception e){e.printStackTrace ();} 0zaK&]oY0
} =dmr,WE
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//获得文件长度 Vw;Z0_C
public long getFileSize() '<R>cN"
{ ~HZdIPcC
int nFileLength = -1; aD^$v
try{ nHseA
URL url = new URL(siteInfoBean.getSSiteURL()); i[v4[C=WB!
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); OT9]{|7
httpConnection.setRequestProperty("User-Agent","NetFox"); rtV`Q[E
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int responseCode=httpConnection.getResponseCode(); p+VU:%.t
if(responseCode>=400) .ZpOYhk
{ i%hCV o
processErrorCode(responseCode); ?sf<cFF
return -2; //-2 represent access is error 1E+12{~m"i
} g!'R}y
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String sHeader; ~r1pO#r-
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for(int i=1;;i++) M/zO|-j&
{ U2q6^z4l
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Xz$4cI#n:
//Utility.log(in.readLine()); g.lTNQm$u
sHeader=httpConnection.getHeaderFieldKey(i); *'%V}R[>
if(sHeader!=null) ;<[X\;|'
{ =]Wi aF
if(sHeader.equals("Content-Length")) d*gAL<M7E
{ TNX9Z)=>g
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); H iyg1
break; XLNbV?
} 3S^0%"fY
} #z\ub5um
else ;_o]$hV|
break; ekM?
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} qt/K$'
} "-J5!y*,Y
catch(IOException e){e.printStackTrace ();} MdHm%Vx
catch(Exception e){e.printStackTrace ();} E+f)Zg
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Utility.log(nFileLength); uDf<D.+5Ze
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return nFileLength; ,,H "?VO
} d9N[f>
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//保存下载信息(文件指针位置) GG}%
private void write_nPos() wPA^nZ^}9c
{ __=H"UhWv
try{ 64s;EC
output = new DataOutputStream(new FileOutputStream(tmpFile)); AK:cDKBO
output.writeInt(nStartPos.length); o[|[xuTm
for(int i=0;i<nStartPos.length;i++) Y'v[2s
{ ]lB zp D
// output.writeLong(nPos); 5xQ-f
output.writeLong(fileSplitterFetch.nStartPos); Cf{F"o
output.writeLong(fileSplitterFetch.nEndPos); $ghZ<Y2}9
} }3pM,.
output.close(); dmFn0J-\
} NYm"I`5w
catch(IOException e){e.printStackTrace ();} !`DRJ)h
catch(Exception e){e.printStackTrace ();} T]#V
} <`H0i*|Ued
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//读取保存的下载信息(文件指针位置) Shn,JmR
private void read_nPos() s|[>@~gXk
{ / f%mYL
try{ yI0bSu<j-
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 55[ 4)*
int nCount = input.readInt(); Dg&84,bv^
nStartPos = new long[nCount]; jLVJ+mu
nEndPos = new long[nCount]; 1W^hPY
for(int i=0;i<nStartPos.length;i++) y<)TYr
{ f:c'j`
nStartPos = input.readLong(); 8|u4xf<
nEndPos = input.readLong(); Z;BS@e
} rIyH/=;
input.close(); ;b~ S/
} PwY/VGT
catch(IOException e){e.printStackTrace ();} tFN >]`Z
catch(Exception e){e.printStackTrace ();} dzVi ~wt_&
} U|^xr~q!f-
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private void processErrorCode(int nErrorCode) P 7x;G5'.
{ 3h:j.8Z
System.err.println("Error Code : " + nErrorCode); =ily=j"hK
} .3!Wr*o
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//停止文件下载 u9lZHh#V-
public void siteStop() la!]Y-s)'4
{ 8@3K, [Mo
bStop = true; sI ,!+
for(int i=0;i<nStartPos.length;i++) $Y/9SD
fileSplitterFetch.splitterStop(); 0;Z|:\P\=
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} .@1+}0
}
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//负责部分文件的抓取 uuzV,q
**FileSplitterFetch.java .*O*@)}Ud
*/ Z6!Up1
package NetFox; B#sCB&(
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import java.io.*; N&9o 1_}
import java.net.*; T j$'B[cv
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public class FileSplitterFetch extends Thread { o%d
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String sURL; //File URL SzULy
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long nStartPos; //File Snippet Start Position ou,[0B3n0
long nEndPos; //File Snippet End Position kZ]H[\Fs
int nThreadID; //Thread's ID GP:<h@:798
boolean bDownOver = false; //Downing is over xtV+Le%
boolean bStop = false; //Stop identical %sa?/pjK
FileAccessI fileAccessI = null; //File Access interface j"W>fC/u
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+}
public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 6FS%9.Ws
{ kY0HP a
this.sURL = sURL; XS<>0YM
this.nStartPos = nStart; $vn6%M[
this.nEndPos = nEnd; 3JazQU
nThreadID = id; 2e48L677-
fileAccessI = new FileAccessI(sName,nStartPos);//定位 d;i|s[6ds`
} A5l Cc
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public void run() | /.J{=E0K
{ 5Qgu:)}
while(nStartPos < nEndPos && !bStop) AFLtgoXn:
{ ?K1B^M=8
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try{ h~dQ5%
URL url = new URL(sURL); #w$Y1bjn
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); {Jr1K,
httpConnection.setRequestProperty("User-Agent","NetFox"); &L|oqXE0L
String sProperty = "bytes="+nStartPos+"-"; 8|&,JdT
httpConnection.setRequestProperty("RANGE",sProperty); -4Qub{Uym
Utility.log(sProperty); #2Rz=QI
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InputStream input = httpConnection.getInputStream(); 2.qPMqH
//logResponseHead(httpConnection); H MOIUd
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byte[] b = new byte[1024]; Q*M# e
int nRead; _3IT3mb2n
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) +qi&