/* 32s5-.{c/f
**SiteFileFetch.java IvFR <n
*/ NoJUx['6
package NetFox; 9jqO/_7R+
import java.io.*; 6aRGG+H
import java.net.*; P$6W`^DZ
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public class SiteFileFetch extends Thread { \y[Bu^tk
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SiteInfoBean siteInfoBean = null; //文件信息Bean tF<^9stM
long[] nStartPos; //开始位置 fE'-.nA+
long[] nEndPos; //结束位置 LjSLg[ i
FileSplitterFetch[] fileSplitterFetch; //子线程对象 /SbSID_a
long nFileLength; //文件长度 {ms,q_Zr
boolean bFirst = true; //是否第一次取文件 @k_Jl>X
boolean bStop = false; //停止标志 ht2
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File tmpFile; //文件下载的临时信息 Xg,0 /P~
DataOutputStream output; //输出到文件的输出流 U?JiVxE^
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) $Z,i|K;
public SiteFileFetch(SiteInfoBean bean) throws IOException 3fm;r5
{ x(rd$oZO
siteInfoBean = bean; aB=vu=hF
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); iJ,M-GHK
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); YR?3 61FK
if(tmpFile.exists ()) $K+4C0wX`
{ Sjw2 j#Q
bFirst = false; N 9c8c
read_nPos(); :a#F
} *^X#Eb
else d&NCFx
{ P4hZB_.=
nStartPos = new long[bean.getNSplitter()]; fL(':W&n-
nEndPos = new long[bean.getNSplitter()]; Tld1P69(
} P{"WlJ
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} g&{gD^9)4
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public void run() "|(rVj=
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//获得文件长度 9BqQ^`bu
//分割文件 7bA4P*
//实例FileSplitterFetch AF6d#Klog
//启动FileSplitterFetch线程 dNOX&$/=
//等待子线程返回 F5<"ktnI
try{ G/NTe
if(bFirst) "Q3PC!7X:5
{ xN e_qO
nFileLength = getFileSize(); ->#y(}
if(nFileLength == -1) c_@XQ&DC`
{ >Y,/dyT
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System.err.println("File Length is not known!"); t)\D
} hZp=BM"bJ
else if(nFileLength == -2) Aqa6R+c
{ 'q{PtYr
System.err.println("File is not access!"); H(X+.R,Thp
} /1IvLdPIu
else ,:v.L}+Z
{ &?KPu?9
for(int i=0;i<nStartPos.length;i++) L{cK^ ,
{ ^;0~6uBEJr
nStartPos = (long)(i*(nFileLength/nStartPos.length)); H @_eFlT t
} Bv2z4D4f+
for(int i=0;i<nEndPos.length-1;i++) +L^A:}L(
{ (iHf9*i CV
nEndPos = nStartPos[i+1]; AeNyZ[40T
} v(qV\:s}m
nEndPos[nEndPos.length-1] = nFileLength; g,00'z_D
} B`g<Ge~
} Q
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//启动子线程 )p^m}N 6M]
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 4(` 2#
for(int i=0;i<nStartPos.length;i++) 9X
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), >{O[t2&
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), e#l*/G*,
nStartPos,nEndPos,i); g0^~J2sDd
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); @?<N +qdH>
fileSplitterFetch.start(); &/B2)l6a
} aDm-X r
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), *]{9K
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); mr:kn0
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", j#*asGdp#J
nEndPos = " + nFileLength); 9F2P(aS
// fileSplitterFetch[nPos.length-1].start(); z5x,fQw6O
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//等待子线程结束 S/@dkHI'
//int count = 0; B'G*y2UnG
//是否结束while循环 /2g)Z!&+L
boolean breakWhile = false; %k/
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while(!bStop) '_q: vjX
{ Z:\;R{D
write_nPos(); @D.R0uM
Utility.sleep(500); ?RgU6/2
breakWhile = true; s=H/b$v
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for(int i=0;i<nStartPos.length;i++) AIvL#12
{ 7,V!Iv^X
if(!fileSplitterFetch.bDownOver) g5kYyE
{ OmT Z-*N
breakWhile = false; 09}f\/
break; Bq$e|t)'
} -4*'WzWr
} s=^r/Sz902
if(breakWhile) z;fd#N:
break; ~pd1)
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//count++; uPv;y!Lsa@
//if(count>4) 9#Aipu\
// siteStop(); m
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} ,xtKPA
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System.err.println("文件下载结束!"); <?q&PCAn^
} YLA557~
catch(Exception e){e.printStackTrace ();} ]YisZE4s
} RE`J"&
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//获得文件长度 1jUhG2y
public long getFileSize() rZ8Y=) e
{ @\%)'WU
int nFileLength = -1; 3PvZ_!G
try{ h}anTFKP
URL url = new URL(siteInfoBean.getSSiteURL()); w-0O j
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); RvyBg:Aj5
httpConnection.setRequestProperty("User-Agent","NetFox"); l6&v}M
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int responseCode=httpConnection.getResponseCode(); !^>LOH>j
if(responseCode>=400) AhbT/
{ ADLa.{
processErrorCode(responseCode); 1c<CEq:?e%
return -2; //-2 represent access is error 66^1&D"
} c:h.J4mv
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String sHeader; &J6o$i
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for(int i=1;;i++) [x$eF~Kp
{ -CU7u=*b
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); O, ``\(P
//Utility.log(in.readLine()); Kh:#S|
sHeader=httpConnection.getHeaderFieldKey(i); hSx+{4PZ
if(sHeader!=null) $+lz<~R
{ 68'-1}
if(sHeader.equals("Content-Length")) lry&)G=5
{ JGSk4
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); u'$yYzBE
break; m]-v IUpb
} }QWTPRn
} RKoP6LGw
else T}w*K[z
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break; AjL?Qh4
} 6uCk0
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} 7'{Yz
catch(IOException e){e.printStackTrace ();} r'9=kx
catch(Exception e){e.printStackTrace ();} Y6;0khp
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Utility.log(nFileLength); VeN&rjc
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return nFileLength; mf*9^}l+Zn
} {x&jh|f`g
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//保存下载信息(文件指针位置) ~P]HG;$?n
private void write_nPos() qa0JQ_?o]
{ r_g\_y7ua
try{ ^7~SS2t!
output = new DataOutputStream(new FileOutputStream(tmpFile)); 6wpND|cT
output.writeInt(nStartPos.length); 0'\FrG
for(int i=0;i<nStartPos.length;i++) k@t,[
{ PO%yWns30o
// output.writeLong(nPos); g<hv7?"[
output.writeLong(fileSplitterFetch.nStartPos); p+`*~6Jj/
output.writeLong(fileSplitterFetch.nEndPos); '.h/Y/oz
} /SqFP
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output.close();
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} U3_yEvZ
catch(IOException e){e.printStackTrace ();} q*RaX
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catch(Exception e){e.printStackTrace ();} ltr;pc*)
} F"m}mf
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//读取保存的下载信息(文件指针位置) 0IPhVG~#
private void read_nPos() t7!>5e)C}
{ 4M0v1`k
try{ ZB^4 (F')H
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); :E >n)_^
int nCount = input.readInt(); >Rki[SNb-b
nStartPos = new long[nCount]; ,$6MM6W;-F
nEndPos = new long[nCount]; #hE3~+i
for(int i=0;i<nStartPos.length;i++) o$blPTN
{ ,I2reG
nStartPos = input.readLong(); zFdz]z3
nEndPos = input.readLong(); 3U9+l0mBa
} B1d%#
input.close(); }d~FTre
} >Dp6@%
catch(IOException e){e.printStackTrace ();} X^
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catch(Exception e){e.printStackTrace ();} ^zWO[$n}tP
} }%>$}4 ,
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private void processErrorCode(int nErrorCode) q|
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{ |Z7bd^
System.err.println("Error Code : " + nErrorCode); Sj{rvW
} @'<j!CqQ
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//停止文件下载 .f92^lu9
public void siteStop() }_kI>
{ 5k%N<e``
bStop = true; y8~)/)l&
for(int i=0;i<nStartPos.length;i++) 6rN5Xf cS
fileSplitterFetch.splitterStop(); dT,m{[+
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} K_lL\
} Wse*gO
//负责部分文件的抓取 ZnhuIAAG
**FileSplitterFetch.java KEVy%AP=*h
*/ <C.$Db&9
package NetFox; RkH oT^
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import java.io.*; ^`>Ysc(@&
import java.net.*; zWmo
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public class FileSplitterFetch extends Thread { kJ<Xq
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String sURL; //File URL /DG`Hg
long nStartPos; //File Snippet Start Position U9p.Dh~)vG
long nEndPos; //File Snippet End Position KGE-RK
int nThreadID; //Thread's ID -TU{r_!Z(
boolean bDownOver = false; //Downing is over mKFHT
boolean bStop = false; //Stop identical fddbXs0Sn
FileAccessI fileAccessI = null; //File Access interface QWW7I.9r
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException dG~B3xg;5i
{ vkd<l&zD
this.sURL = sURL; RAuAIiQ
this.nStartPos = nStart; K9N0kBJ0<
this.nEndPos = nEnd; >->xhlL*
nThreadID = id; >*i8RqU
fileAccessI = new FileAccessI(sName,nStartPos);//定位 D)~nAkVq
} HAUTCX
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public void run() WWs[]zr
{ 6!Ji>h.Ak
while(nStartPos < nEndPos && !bStop) pS@VLXZP
{ gK#fuQ$hH
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try{ O7'^*"S
URL url = new URL(sURL); H"RF[bX(
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); #z^1)7
httpConnection.setRequestProperty("User-Agent","NetFox"); xE-`Bb
String sProperty = "bytes="+nStartPos+"-"; 6k=Wt7C
httpConnection.setRequestProperty("RANGE",sProperty); ;YXr G
Utility.log(sProperty); ,N|R/Vk$+E
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InputStream input = httpConnection.getInputStream(); Rb}&c)4
//logResponseHead(httpConnection); ^`r|3c0
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byte[] b = new byte[1024]; `"=L
int nRead; u-M$45vct
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) )E~\H+FP6
{ ?O>JtEz~lQ
nStartPos += fileAccessI.write(b,0,nRead); L\?g/l+k
//if(nThreadID == 1) W;g+R-
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); . N} }cJq
} @NwM+^
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Utility.log("Thread " + nThreadID + " is over!"); AXv;r<
bDownOver = true; iGeT^!N
//nPos = fileAccessI.write (b,0,nRead); W!0
} bOIM0<(h
catch(Exception e){e.printStackTrace ();} ,Yprk%JT
} pW^ ?g|_}
} Y*`A$
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//打印回应的头信息 n6UU6t{
public void logResponseHead(HttpURLConnection con) uZ?CVluP
{ 70*iJ^|
for(int i=1;;i++) U
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{ nV xMo_
String header=con.getHeaderFieldKey(i); |afK"N
if(header!=null) J8?6G&0H
//responseHeaders.put(header,httpConnection.getHeaderField(header)); o-<_X&"a|5
Utility.log(header+" : "+con.getHeaderField(header)); M "P
else Y+`-~ 88
break; BRzWZq%r3
} ggsi`Z{j?
} rxI&;F#
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public void splitterStop() '\E{qlI
{ HYnq x>L ~
bStop = true; {1U*:@j
} *k]S{]Y
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} [QN7+#K,
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/* pV|?dQ
**FileAccess.java $M<