/* :+Pl~X"_
**SiteFileFetch.java @.4e^Km
*/ ,O9rL :?
package NetFox; F$Cf\#{3
import java.io.*; X j'7nj
import java.net.*;
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public class SiteFileFetch extends Thread { 12NV
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SiteInfoBean siteInfoBean = null; //文件信息Bean " <GDOL
long[] nStartPos; //开始位置 91Cg
long[] nEndPos; //结束位置 qU'O4TWZ
FileSplitterFetch[] fileSplitterFetch; //子线程对象 |_Y[931<
long nFileLength; //文件长度 &"90pBGK
boolean bFirst = true; //是否第一次取文件 _` %z
boolean bStop = false; //停止标志 hb6UyN
File tmpFile; //文件下载的临时信息 rKP;T"?;
DataOutputStream output; //输出到文件的输出流 WHV]H
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) "hwG"3n1
public SiteFileFetch(SiteInfoBean bean) throws IOException 2iUdTy$
{ BjT0mk"P
siteInfoBean = bean; *mqoyOa
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); >3S^9{d
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); QU&b5!;&
if(tmpFile.exists ()) l_GsQ0
{ zH0{S.3k
bFirst = false; lC/4CPKtV
read_nPos(); :Kc}R)6
} q><E?
else ]FJpe^
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{ ^,Sl^ 9K
nStartPos = new long[bean.getNSplitter()]; Q(
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nEndPos = new long[bean.getNSplitter()]; K%Sy~6iD&
} =Vgj=19X(
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} -L9I;]:KY
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public void run() '`$US;5
{ P|"U
//获得文件长度 t"0Z=`Wi
//分割文件 /Z:\=0`
//实例FileSplitterFetch G/F0)M
//启动FileSplitterFetch线程 }&Eb {'
//等待子线程返回 ))M; .b.D
try{ Pkr0|bs*
if(bFirst) 1|za>N6[yu
{ _T\~AwVc<
nFileLength = getFileSize(); I2@pkVv3z
if(nFileLength == -1) o{EWNkmj
{ MP Ma
System.err.println("File Length is not known!"); e ;4y5i
} *wml
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else if(nFileLength == -2) =[O;/~J%:
{ axTvA(k9
System.err.println("File is not access!"); @:'swO/\<
} p;S<WJv k
else C~4$A/&(
{ 0Ywqv)gg
for(int i=0;i<nStartPos.length;i++) !6t
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{ /f!CX|U
nStartPos = (long)(i*(nFileLength/nStartPos.length)); @"*8nV#
} x(e=@/qp
for(int i=0;i<nEndPos.length-1;i++) D`;Q?fC
{ B!vI^W
nEndPos = nStartPos[i+1]; _)q,:g~fu
} d7xd"
nEndPos[nEndPos.length-1] = nFileLength; 1D
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} O
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//启动子线程 MQR@(>TZy
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; \Rc7$bS2H
for(int i=0;i<nStartPos.length;i++) VP4W~;UV|\
{ hWGCYkuW
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ,UFr??ZKm
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ^L&hwXAO:
nStartPos,nEndPos,i); Y4PB&pZ$O2
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); iJg3`1@j
fileSplitterFetch.start(); :Mss"L820
} Q3SwW
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), q]%c
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 8$fiq}a
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", qMAH~P0u
nEndPos = " + nFileLength); ;c5Q"
// fileSplitterFetch[nPos.length-1].start(); *KP
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//等待子线程结束 O!!Ne'I
//int count = 0; *g$egipfF
//是否结束while循环 X<4h"W6
boolean breakWhile = false; gi;#?gps
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while(!bStop) I!y[7^R
{ }.<%46_Z-
write_nPos(); ]KMOLe6(
Utility.sleep(500); hSmu"a,S
breakWhile = true; _"8\k7S*
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for(int i=0;i<nStartPos.length;i++) JFx=X=C
{ NGHzifaE
if(!fileSplitterFetch.bDownOver) Z:|2PQ4
{ A*ImruV
breakWhile = false; Z6<vLc
break; {0fQ"))"
} gk+$CyjJ
} fDmGgD?
if(breakWhile) %(`4wo},
break; pb~&gliW
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//count++; _DChNX
//if(count>4) iP1u u
// siteStop(); Ws[[Me,=
} ]p(jL7
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System.err.println("文件下载结束!"); \*#9Ry^f
} UOrfwK
catch(Exception e){e.printStackTrace ();} jP6;~[rl
} .^^YS$%%7
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//获得文件长度 rIz"_r
public long getFileSize() zmI?p4,
{ XfFZ;ul
int nFileLength = -1; `,
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try{ !*wK4UcX"
URL url = new URL(siteInfoBean.getSSiteURL()); b'Gn)1NE
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 6KmF 9
httpConnection.setRequestProperty("User-Agent","NetFox"); kW&{0xkGR
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int responseCode=httpConnection.getResponseCode(); Lxm1.TOJ
if(responseCode>=400) K#g)t/SZ
{ Z3=DM=V;v
processErrorCode(responseCode); EJYfk?(B
return -2; //-2 represent access is error xq',pzN
} -`6O(he
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String sHeader; 4
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for(int i=1;;i++) STp}?Cb
{ VIL #q
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Ml8 '=KN_
//Utility.log(in.readLine()); ANh5-8y
sHeader=httpConnection.getHeaderFieldKey(i); >\b=bT@iM
if(sHeader!=null) 2s,wC!',
{ >S5:zz\
if(sHeader.equals("Content-Length")) ,L&Ka|N0
{ 8Pklw^k
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); RRy3N
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break; Fs7/3
} >G<AyS&z*
} zH8l-0I+$
else JZ&]"12]fR
break; V ^=o@I
} fL4F
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catch(IOException e){e.printStackTrace ();} ):C4"2l3
catch(Exception e){e.printStackTrace ();} {{M?+]p,^
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Utility.log(nFileLength); 6/9 A' !4C
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return nFileLength; &;7\/m*W1
} C(C4R+U
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//保存下载信息(文件指针位置)
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private void write_nPos() kEWC
{ xmZ]mu,,$
try{ D!TL~3d
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output = new DataOutputStream(new FileOutputStream(tmpFile)); Gk2\B]{
output.writeInt(nStartPos.length); 0Ph,E
for(int i=0;i<nStartPos.length;i++) 4O[T:9mn0
{ &O(z|-&| x
// output.writeLong(nPos); b#|M-DmT
output.writeLong(fileSplitterFetch.nStartPos); 0o[p<<c*
output.writeLong(fileSplitterFetch.nEndPos); z7F~;IB*u
} {U4BPKof
output.close(); |{]\n/M
} o9~ Z! &p
catch(IOException e){e.printStackTrace ();} KcP86H52I
catch(Exception e){e.printStackTrace ();} S'vi +_
} DGdSu6s$
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//读取保存的下载信息(文件指针位置) vWI9ocl`W
private void read_nPos() 9}t2OJS*h"
{ LOi5 ^Um|
try{ z=vfP%
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); "y/GK1C
int nCount = input.readInt(); f;#hcRSH
nStartPos = new long[nCount]; UO8#8
nEndPos = new long[nCount]; Z2`(UbG}
for(int i=0;i<nStartPos.length;i++) e4Ol:V
{ u*Eb4
nStartPos = input.readLong(); /r Zj=
nEndPos = input.readLong(); "YHqls} c
} 31k.{dnm
input.close(); C/ow{MxA
} 9f;\fe
catch(IOException e){e.printStackTrace ();} |"DQ^)3Pi
catch(Exception e){e.printStackTrace ();} Q u2W
} QNzI
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private void processErrorCode(int nErrorCode) i;`rzsRb
{ e m<(wJ-Y
System.err.println("Error Code : " + nErrorCode); D_D<N(O
} X'e@(I!0
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//停止文件下载 5YMjvhr?W
public void siteStop() ` :Am#"j]}
{ Dms6"x2
bStop = true; W1M<6T.{7
for(int i=0;i<nStartPos.length;i++) =:mD)oX*
fileSplitterFetch.splitterStop(); &%L1n?>Q}
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} cF3V{b|bU
} $`x4|a8-
//负责部分文件的抓取 &V$_u#<
**FileSplitterFetch.java (}vi"mCeW
*/ )U e9:e
package NetFox; >y"V%
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import java.io.*; K+TRt"W8&s
import java.net.*; dGMBgj
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public class FileSplitterFetch extends Thread { ,95Nj h
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String sURL; //File URL 4]u53`
long nStartPos; //File Snippet Start Position X0+$pJ60
long nEndPos; //File Snippet End Position w0x,~
int nThreadID; //Thread's ID ?V"X=B2
boolean bDownOver = false; //Downing is over DzYi>
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boolean bStop = false; //Stop identical 5X4; (Qj
FileAccessI fileAccessI = null; //File Access interface ".onev^(
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException _dVzvk`_R
{ ?d0I*bs)7
this.sURL = sURL; :% )va
this.nStartPos = nStart; xrxORtJ<