/* zbj V>5
**SiteFileFetch.java ?C']R(fQ\
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package NetFox; sgRWjrc/
import java.io.*; a%5/Oc[[
import java.net.*; <6+T&Ov6
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public class SiteFileFetch extends Thread { !|8"}ZF
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SiteInfoBean siteInfoBean = null; //文件信息Bean D 9UM8Hxi
long[] nStartPos; //开始位置 k 7:Z\RGy
long[] nEndPos; //结束位置 U+zntB
FileSplitterFetch[] fileSplitterFetch; //子线程对象 R2JPLvs
long nFileLength; //文件长度 J$lfI^^
boolean bFirst = true; //是否第一次取文件 "28zLo3
boolean bStop = false; //停止标志 w~yC^`
File tmpFile; //文件下载的临时信息 3,n" d-
DataOutputStream output; //输出到文件的输出流 k n/xt
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) k8r1)B4ab
public SiteFileFetch(SiteInfoBean bean) throws IOException Z\cD98B#
{ ]r'D
siteInfoBean = bean; !(gSXe)*
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); O{0it6
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); $hMD6<e
if(tmpFile.exists ()) Cj$:TWYIh[
{ dsH*9t:z
bFirst = false; <W+9h0c
read_nPos(); 0o:R:*
} "BZ@m:I6hy
else 3O;"{E=
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{ Hg$7[um
nStartPos = new long[bean.getNSplitter()]; ).AMfBQ=;
nEndPos = new long[bean.getNSplitter()]; wD4[UU?
} 2$v8{Y&
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} (4#iLs
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public void run() cL][sI
{ pC #LQ
//获得文件长度 /4@
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//分割文件 z:Z-2WV2o
//实例FileSplitterFetch D c;k)z=
//启动FileSplitterFetch线程 .(3ec/i4CF
//等待子线程返回 jAU&h@
try{ hRMya#%-
if(bFirst) uP(t+}dQ+3
{ IUNr<w<
nFileLength = getFileSize(); t#3_M=L
if(nFileLength == -1) |* ^LsuFb
{ fI1
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System.err.println("File Length is not known!"); H8g%h}6h
} 6P:fM Y
else if(nFileLength == -2) ]"~
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{ BMdZd5!p&
System.err.println("File is not access!"); kW1w;}n$
} ~Z!YB,)bp
else n$v4$_qS
{ n oM=8C&U
for(int i=0;i<nStartPos.length;i++) 1vxQ`) a
{ [YZgQ
nStartPos = (long)(i*(nFileLength/nStartPos.length)); '#=0q
} %V+"i_{m
for(int i=0;i<nEndPos.length-1;i++) - Ry+WS=
{ ;<_a ,5\Q
nEndPos = nStartPos[i+1]; r)OiiD"
} -/V(Z+dj
nEndPos[nEndPos.length-1] = nFileLength; u0A$}r$L
} 2dcvB]T!
} .FC+
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//启动子线程 ,aa
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fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; h(<>s#=E
for(int i=0;i<nStartPos.length;i++) {+nf&5E 6
{ '5LdiSk
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 2ij&Db/
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Dh}(B$~Oz+
nStartPos,nEndPos,i); R PoBF~>
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); j>B* 8*Ss
fileSplitterFetch.start(); 0{vH .b
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} AI Kz]J0;
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), |xg_z&dX
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); =5Nh}o(l?
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", O ;[Mi
nEndPos = " + nFileLength); GM?s8yZ<
// fileSplitterFetch[nPos.length-1].start(); aKWxL e
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k!}(a0h
//等待子线程结束 8A.7q
//int count = 0; EmR82^_:
//是否结束while循环 d~QM@<SV
boolean breakWhile = false; w;j<$<4=7
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while(!bStop) 7 4MxU
{ m#Z&05^
write_nPos(); ;+(VO
Utility.sleep(500); q6w)zTpJGJ
breakWhile = true; ~J&-~<%P}
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for(int i=0;i<nStartPos.length;i++) 4(LLRzzW
{ 6/5,n0
if(!fileSplitterFetch.bDownOver) BgQ/$,
{ J?yasjjgP
breakWhile = false; M<d!j I9)
break; 0<a|=kZ
} 2l+L96
} )#cZ&
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if(breakWhile) nq8XVT.m^\
break; ()bQmNqmO=
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//count++; $
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//if(count>4) Pd\4hy
// siteStop(); Fa[^D~$l*
} <kPNe>-f
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System.err.println("文件下载结束!"); 1n[)({OQ
} Mms|jFoQ
catch(Exception e){e.printStackTrace ();}
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} _:=\h5}8
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//获得文件长度 vt2.
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public long getFileSize() G<D8a2q
{ hTzj{}w
int nFileLength = -1; \<*F#3U1
try{ (${ #l
URL url = new URL(siteInfoBean.getSSiteURL()); &K[sb%
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); *$BUow/>
httpConnection.setRequestProperty("User-Agent","NetFox"); [n)ak)_/
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int responseCode=httpConnection.getResponseCode(); GEF's#YWK
if(responseCode>=400) j?m(l,YD|*
{ yRyXlZC
processErrorCode(responseCode); vj%"x/TP
return -2; //-2 represent access is error #e-K It
} QK[^G6TI
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String sHeader; 2HmK['(
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for(int i=1;;i++) j8p<HE51
{ k>mXh{(
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); (ct1i>g
//Utility.log(in.readLine()); os"R'GYmf
sHeader=httpConnection.getHeaderFieldKey(i); Qe>_\-f
if(sHeader!=null) Ye&/O<G'V
{ \-pwA j?
if(sHeader.equals("Content-Length")) L?+N:G
{ g;'S5w9S
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); H=C~h\me?
break; x-k-Pd
} h~\k;ca
} hdx_Tduue
else 9 da=q
break; (WC
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} [mu8V+8@d4
} tj~r>SRb+
catch(IOException e){e.printStackTrace ();} pNOE
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catch(Exception e){e.printStackTrace ();} ~6n|GxR.[
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Utility.log(nFileLength); 2|lR@L sr
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return nFileLength; bWp:!w#K
} W,6q1
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//保存下载信息(文件指针位置) f&4+-w.:V|
private void write_nPos() y EfAa6
{ s(3u\#P
try{ m_oUl(pk
output = new DataOutputStream(new FileOutputStream(tmpFile)); _Sfu8k>):
output.writeInt(nStartPos.length); ~6kF`}5
for(int i=0;i<nStartPos.length;i++) n'^`;-
{ |.$B,cEd
// output.writeLong(nPos); F$tzsz,9n
output.writeLong(fileSplitterFetch.nStartPos); Nuot[1kS
output.writeLong(fileSplitterFetch.nEndPos); ;&=CZ6vH
} 8|)!E`TKSV
output.close(); g$Y]{VM.J
} z0/+P
catch(IOException e){e.printStackTrace ();} Z40k>t
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catch(Exception e){e.printStackTrace ();} _lk VT']
} 0SYJ*7lPX
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//读取保存的下载信息(文件指针位置) /kG?I_z
private void read_nPos() -c?x5/@3
{ onSt%5{P%X
try{ ?wG
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); i
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int nCount = input.readInt(); ,Ohhl`q(
nStartPos = new long[nCount]; `)y
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nEndPos = new long[nCount]; V[kJ;YLPN
for(int i=0;i<nStartPos.length;i++) @NA+Ma{N
{ vc|tp_M67
nStartPos = input.readLong(); W vB]Rs
nEndPos = input.readLong(); g]L8Jli
} }C_g;7*
input.close(); f\cTd/?Ju
} 1$03:ve1
catch(IOException e){e.printStackTrace ();} J' P:SC1
catch(Exception e){e.printStackTrace ();} ^2$b8]q
} YU-wE';H6
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private void processErrorCode(int nErrorCode) oCOv
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{ J&~I4ko]
System.err.println("Error Code : " + nErrorCode); 4'#=_J
} ^2Cqy%x-
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//停止文件下载 @JhkUGG]p
public void siteStop() )J @[8 x`
{ uo]\L^j
bStop = true; IrCl\HQN
for(int i=0;i<nStartPos.length;i++) =@4,szLO
fileSplitterFetch.splitterStop(); _@XueNU1hS
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} PU.j(0
} &2 Yo
//负责部分文件的抓取 H4
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**FileSplitterFetch.java jbS@6 *_
*/ h/\Zq
package NetFox; q[qX O5
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import java.io.*; 6/wC StZ
import java.net.*; Kn$E{ F\
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public class FileSplitterFetch extends Thread { Vbp@n
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String sURL; //File URL <(Ar[Rp
long nStartPos; //File Snippet Start Position U~yPQ8jD
long nEndPos; //File Snippet End Position 5g-1pzP9
int nThreadID; //Thread's ID ],!}|
boolean bDownOver = false; //Downing is over h&