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**SiteFileFetch.java >,32~C
*/ I^\YD9~=x
package NetFox; ]hL 1qS
import java.io.*; F!'b_gmz
import java.net.*; KQQR"[z&V
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public class SiteFileFetch extends Thread { [<f\+g2ct
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SiteInfoBean siteInfoBean = null; //文件信息Bean 2x3&o|J
long[] nStartPos; //开始位置 p# O%<S@?
long[] nEndPos; //结束位置 H4^-M Sw
FileSplitterFetch[] fileSplitterFetch; //子线程对象 X^fMt]
long nFileLength; //文件长度 LuR.; TiW
boolean bFirst = true; //是否第一次取文件 9$UjZ$ v
boolean bStop = false; //停止标志 .T4"+FTzP
File tmpFile; //文件下载的临时信息 NaB8cLURp
DataOutputStream output; //输出到文件的输出流 n1.]5c3p
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) M/R#f9W
public SiteFileFetch(SiteInfoBean bean) throws IOException C x$|7J=O
{ nmS3
siteInfoBean = bean;
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//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ykX}T6T
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); &[qLl
if(tmpFile.exists ()) bWUo(B#*I
{ ]W-:-.prh
bFirst = false; & UL(r
read_nPos(); [
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} KuE
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else 'UW7zL5
{ waO*CjxE:
nStartPos = new long[bean.getNSplitter()]; $>8+t>|
nEndPos = new long[bean.getNSplitter()]; dl(cYP8L
} f=g/_R2$xN
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} )k <ON~x
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public void run() "%-HZw%X
{ |giK]Z
//获得文件长度 C03ehjT<
//分割文件 IWuR=I$t
//实例FileSplitterFetch VU}UK$JN
//启动FileSplitterFetch线程 Y
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//等待子线程返回 m:II<tv
try{ "2N3L8?k
if(bFirst) VO#]IXaP
{ H@,jNIh~h
nFileLength = getFileSize(); Gvl-q1PVC
if(nFileLength == -1) ^\{%(i9
{ /|`;|0/2
System.err.println("File Length is not known!"); {$oZR"MP
} (9fq UbG
else if(nFileLength == -2) u+z$+[lm!G
{ +%$!sp?
System.err.println("File is not access!"); m"X0Owx
} P0k|33;7L
else uTBls8
{ rsOon2|
for(int i=0;i<nStartPos.length;i++) i2)rDek3]T
{ b3<<4Vf
nStartPos = (long)(i*(nFileLength/nStartPos.length)); g9'50<|J
} K?(ls$
for(int i=0;i<nEndPos.length-1;i++) E;| q
{ [$OD+@~A2
nEndPos = nStartPos[i+1]; 2,E&}a|;b
} nPR_:_^
nEndPos[nEndPos.length-1] = nFileLength; <P(d%XEl
} cC&R~h]|
} DZR kK3
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//启动子线程 +:mj]`=
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; bX=ht^e[
for(int i=0;i<nStartPos.length;i++) J$j&j`
{ %7/XZQ
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 3yZtyXRPn
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), (ZT*EFhb(
nStartPos,nEndPos,i); ol:,02E&
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos);
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fileSplitterFetch.start(); ?dC[VYC\^
} oT5?*3f
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), aq0J }4U
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); )}]<o
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// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", AL&}WbUC
nEndPos = " + nFileLength); r/Qq-1E
// fileSplitterFetch[nPos.length-1].start(); \02j~r`o
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//等待子线程结束 f|w+}z
//int count = 0; .A&Ey5
//是否结束while循环 +2|X 7wA
boolean breakWhile = false; >"5^]o2?~l
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while(!bStop) J &u&G7#S
{ Bl3G_Ep
write_nPos(); =_D82`p
Utility.sleep(500); !|}J{
breakWhile = true; A5F< <
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for(int i=0;i<nStartPos.length;i++) Rr|VGtg
{ T,`'qZ>
if(!fileSplitterFetch.bDownOver) MDGcK/$')f
{ J55K+
breakWhile = false; A
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break; Haaungb"
} <@A/`3_O)
} E)09M%fe
if(breakWhile) cx1U6A+
break; {ylc2 1
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//count++; pvDr&n9
//if(count>4) NA]7qb%%<
// siteStop(); [qIi_(%o
} wU2y<?$\8
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System.err.println("文件下载结束!"); [j
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} V%<<Udu<
catch(Exception e){e.printStackTrace ();} fP&F$"o8
} d[kb]lC
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//获得文件长度 c<y.Y0
public long getFileSize() ~Rs|W;
{ >XSe[K
int nFileLength = -1; \-#~)LB]M
try{ ]BO{Q+?d2
URL url = new URL(siteInfoBean.getSSiteURL()); L<1"u.3Z`}
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 9bMM-~
httpConnection.setRequestProperty("User-Agent","NetFox"); wI1[I
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int responseCode=httpConnection.getResponseCode(); U#Wc!QN-t
if(responseCode>=400) uQ vW@Tt
{ x
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processErrorCode(responseCode); ~V`D@-VND
return -2; //-2 represent access is error 8v*>~E/0
} >#$(M5&}-
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String sHeader; ^t*+hFEI
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for(int i=1;;i++) wf=#w}f
{ uZ]B ?Z%y#
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); bhOyx
//Utility.log(in.readLine()); 5y(irbk7
sHeader=httpConnection.getHeaderFieldKey(i); YRG+I GX
if(sHeader!=null) L`R,4mI.W
{ CbQ@l@d]
if(sHeader.equals("Content-Length")) xv$^%(Ujp
{ >QE^KtZ
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); >m:.5][yu
break; ^n@iCr9
} 8!VjXj"
} r[TS#hQ
else Jj fNH
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break; T9t9])
} { )'D<:T
} d#ya"e>
catch(IOException e){e.printStackTrace ();} 1.p?P]
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catch(Exception e){e.printStackTrace ();} umcbIi('
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Utility.log(nFileLength); O .TFV.
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return nFileLength; Kp~k!6x
} JEdtj1v{O
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//保存下载信息(文件指针位置) fOE:~3Q
private void write_nPos() pcur6:8W!
{ c*RZbE9k
try{ '8*gJ7]
output = new DataOutputStream(new FileOutputStream(tmpFile)); $#]?\psf
output.writeInt(nStartPos.length); /nv1.c)k
for(int i=0;i<nStartPos.length;i++) reu[}k ~
{ [O"i!AQ
// output.writeLong(nPos); 2O<Sig=
output.writeLong(fileSplitterFetch.nStartPos); z9w@-])
output.writeLong(fileSplitterFetch.nEndPos); yC+N18y?
} K ANE"M
output.close(); .Z%7+[
} px//q4U
catch(IOException e){e.printStackTrace ();} Pk8L-[&v
catch(Exception e){e.printStackTrace ();} 2*K0~ b`
} @]3(l
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//读取保存的下载信息(文件指针位置) AU87cqq
private void read_nPos() II>X6
{ Y0s^9?*
try{ y^;qT_)#
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); A'[A!NL%
int nCount = input.readInt(); M? [lpH3
nStartPos = new long[nCount]; JO :m:
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nEndPos = new long[nCount]; lmH!I)5
for(int i=0;i<nStartPos.length;i++) rt^z#2$
{ &sS k~:
nStartPos = input.readLong(); _j%Rm:m;<
nEndPos = input.readLong(); ,J}lyvkd
} M#<x2ojW
input.close(); Z"Et]xSU%$
} 2<ef&?ljk
catch(IOException e){e.printStackTrace ();} /R|"/B0
catch(Exception e){e.printStackTrace ();} )z/j5tnvm
} +S;8=lzuV
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private void processErrorCode(int nErrorCode) cb'8Li8,j
{ wTIf#y1=9
System.err.println("Error Code : " + nErrorCode); JYv&I t
} zE<vFP-1v
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//停止文件下载 &cpRB&bf
public void siteStop() sv0kksj
{ `Z%XA>
bStop = true; e% 5!
for(int i=0;i<nStartPos.length;i++) l'
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fileSplitterFetch.splitterStop(); Nz!AR$
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} h(G&X9*
} ;A-Ef
//负责部分文件的抓取 _^P>@
^
**FileSplitterFetch.java 5+ fS$Q
*/ }}_WZ},h
package NetFox; B5I(ai7<M
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import java.io.*; i
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import java.net.*; A%Bz52yg
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public class FileSplitterFetch extends Thread { \s~W;m
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String sURL; //File URL OVj,qL)
long nStartPos; //File Snippet Start Position 8De
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long nEndPos; //File Snippet End Position o,aI<5"
int nThreadID; //Thread's ID e;!<3b
boolean bDownOver = false; //Downing is over :"QRB#EC%
boolean bStop = false; //Stop identical @kqy!5)K
FileAccessI fileAccessI = null; //File Access interface X='4N<
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException OcSLRN?t
{ )3G?5
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this.sURL = sURL; Qz$.t>@V=
this.nStartPos = nStart; UI8M<
this.nEndPos = nEnd; niA{L:4
nThreadID = id; ~4 \bR
fileAccessI = new FileAccessI(sName,nStartPos);//定位 X;6X
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} _')KDy7
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public void run() O]~p)E
{ ~&yaIuW<
while(nStartPos < nEndPos && !bStop) x1Si&0T0P<
{ 4p1{Ady
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try{ E3gQ`+wNg?
URL url = new URL(sURL); `mWg$e,
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 9]7^/g*!
httpConnection.setRequestProperty("User-Agent","NetFox"); vkt)!hl `
String sProperty = "bytes="+nStartPos+"-"; -7pZRnv
httpConnection.setRequestProperty("RANGE",sProperty); l[.pI];T
Utility.log(sProperty); !MGQ+bD6
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InputStream input = httpConnection.getInputStream(); gqC:r,a
//logResponseHead(httpConnection); Gm6^BYCk
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byte[] b = new byte[1024]; ,>~92
int nRead; a{-}8f6
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) ,YiBu^E9
{ U#Z}a
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nStartPos += fileAccessI.write(b,0,nRead); leyX:
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//if(nThreadID == 1) &