/* b,YTw
**SiteFileFetch.java HK>!%t0S
*/ f.0~HnNg1
package NetFox; mM"!=' z
import java.io.*; `,ZsKxI
import java.net.*; M xUj7ae
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public class SiteFileFetch extends Thread { I9Af\ k|^
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SiteInfoBean siteInfoBean = null; //文件信息Bean I&|%Fn
long[] nStartPos; //开始位置 K2<Q9 ,vt
long[] nEndPos; //结束位置 >6 [{\uPK
FileSplitterFetch[] fileSplitterFetch; //子线程对象 l)`bm/k]V
long nFileLength; //文件长度 y4s]*?Wz
boolean bFirst = true; //是否第一次取文件 1]#qxjZ~
boolean bStop = false; //停止标志 >=c<6#:s<9
File tmpFile; //文件下载的临时信息 g7@G&Ro9J\
DataOutputStream output; //输出到文件的输出流 Cul^b_UmP#
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) hdtb.u~
public SiteFileFetch(SiteInfoBean bean) throws IOException n=
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{ xuQ$67F`;z
siteInfoBean = bean; A7DEAT))4L
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); u|ia
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); xlF$PpRNM
if(tmpFile.exists ()) t_c;4iE
{ Qjh5m5e
bFirst = false; Da5Zz(
read_nPos(); &;5QB
} iZGc'y
else }R*[7V9"
{ @#Jc!p7)
nStartPos = new long[bean.getNSplitter()]; r-'(_t~FT
nEndPos = new long[bean.getNSplitter()]; Iq.*2aff+
} D1t@Y.vl
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} lN*O</L,"
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public void run() Z8+{ -
{ ^Fgmwa'
//获得文件长度 m5r65=E
//分割文件 D
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//实例FileSplitterFetch B25@6
//启动FileSplitterFetch线程 vtG_A{l
//等待子线程返回
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try{ IZBU<1M
if(bFirst) p't>'?UH|
{ |,L_d2lb
nFileLength = getFileSize(); !VU[=~
if(nFileLength == -1) +CtsD9PA
{ .%;UP7g
System.err.println("File Length is not known!"); K5No6dsD
} /10 I}3D
else if(nFileLength == -2) \Fj$^I>C
{ L,V\g^4$K
System.err.println("File is not access!"); <Hl.MS
} v.H00}[.
else Wfgs[
{ 4ihv|%@
for(int i=0;i<nStartPos.length;i++) LL@VR#n"V
{ XZhuV<
nStartPos = (long)(i*(nFileLength/nStartPos.length)); iZ2|/hnw
} &S9Sl
for(int i=0;i<nEndPos.length-1;i++) 9cud CF
{ zz3Rld!b[
nEndPos = nStartPos[i+1]; _3- nw
} V6Ie\+@.\
nEndPos[nEndPos.length-1] = nFileLength; U`sybtuBP'
} hK*:pf
} z8FeL5.(
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//启动子线程 FI{9k(
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ,5Jq
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for(int i=0;i<nStartPos.length;i++) &PWz4hZ
{ k/hE68<6i
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), A$.woE@
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), [xq"[*Evv
nStartPos,nEndPos,i); &(3kwdI
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); }6b =2Z}
fileSplitterFetch.start(); 1wSJ w
} /M(FuV
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ORk8^0\
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); p>7!"RF:U
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", *#{[9d
nEndPos = " + nFileLength); kb{h`
// fileSplitterFetch[nPos.length-1].start(); 67Rsd2
% FW__SN$c
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//等待子线程结束 X'4e)E3*O
//int count = 0; ,":_=Tf.
//是否结束while循环 HV ab14}E
boolean breakWhile = false; ' p,QI>
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while(!bStop) s,>1n0a
{ Z'p7I}-qr
write_nPos(); }
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Utility.sleep(500); *kE2d{h^=C
breakWhile = true; S*~v9+
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for(int i=0;i<nStartPos.length;i++) SFAh(+t
{ @bU(z$eB
if(!fileSplitterFetch.bDownOver) [Dd?c,5AD
{ 95jJ"4 a+
breakWhile = false; ku q3QW<
break; o!EPF-:
} }
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} {tn%HK">
if(breakWhile) .6S]\dp7~
break; NY(c4fzl
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//count++; H~x,\|l#
//if(count>4) qYZ\<h^
// siteStop(); j;@7V4'
} l<0BMw S8
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System.err.println("文件下载结束!"); UqRm\h
} +*-u_L\'
catch(Exception e){e.printStackTrace ();} Q?rb(u(
} (:W=8G,p
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//获得文件长度 HT7V} UiaO
public long getFileSize() C(7uvQ
{ xb$eFiQ
int nFileLength = -1; +V*FFv
try{ Q)x`'[3"7W
URL url = new URL(siteInfoBean.getSSiteURL()); ^pA|ubZ
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); TUzpln
httpConnection.setRequestProperty("User-Agent","NetFox"); vy\;#X!
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int responseCode=httpConnection.getResponseCode(); ~yz7/?A)TS
if(responseCode>=400) -#T?C]}
{ I;kKY
processErrorCode(responseCode); is_`UDaB
return -2; //-2 represent access is error f.rc~UI?
} qYLOq`<f
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String sHeader; zOkU R9
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for(int i=1;;i++) X?5M)MP+I
{ 1MV\Jm
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ilL] pU-
//Utility.log(in.readLine()); A`2l ;MW
sHeader=httpConnection.getHeaderFieldKey(i); ~9#[\/;"
if(sHeader!=null) 9Cbf[\J!bq
{ aLapb5VV
if(sHeader.equals("Content-Length")) l%]S7|PKx
{ %Z?2.)
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); zM?JLNs]<{
break; Vh1{8'GQ
} Dn;6O
} 8;>vgD
else Fa78yY+6
break; #MYhKySku
} !7XAc,y
} Z!o&};_j
catch(IOException e){e.printStackTrace ();} \9*wo9cV
catch(Exception e){e.printStackTrace ();} \A'MEd-
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Utility.log(nFileLength); M; *f(JY$
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return nFileLength; 7N0V`&}T
} .} <$2.
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//保存下载信息(文件指针位置) NFpR jC?
private void write_nPos() ~*R"WiDtI
{ iW\cLp "
try{ <}x_F)E[t
output = new DataOutputStream(new FileOutputStream(tmpFile)); eglcf z%
output.writeInt(nStartPos.length); A+i|zo5p=k
for(int i=0;i<nStartPos.length;i++) :/'2@M
{ 3n-~+2l
// output.writeLong(nPos); 9fR`un)f}
output.writeLong(fileSplitterFetch.nStartPos); y\7 -!
output.writeLong(fileSplitterFetch.nEndPos); vL~nJv
} - `^594
output.close(); ]H8,}
} j8kax/*[
catch(IOException e){e.printStackTrace ();} MzLnD D^
catch(Exception e){e.printStackTrace ();} W]cJP
} lrg3n[y-l
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//读取保存的下载信息(文件指针位置) Zhb)n
private void read_nPos() F8{"Rk}
{ :[f2iZ"
try{ wRu+:<o^.
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); R5=2EwrGP
int nCount = input.readInt(); A?I/[zkc
nStartPos = new long[nCount]; ,YzrqVY
nEndPos = new long[nCount]; )`5kfj
for(int i=0;i<nStartPos.length;i++) YSi[s*.G
{ YB{hQ<W
nStartPos = input.readLong(); a~>.
nEndPos = input.readLong(); rMkoE7n
} !#P|2>>u
input.close(); t,|`#6 Ft
} _kR);\V.8
catch(IOException e){e.printStackTrace ();} yxq+<A4,a
catch(Exception e){e.printStackTrace ();} .9X, )^D
} &c<0g`x
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