/* VfA5r`^
**SiteFileFetch.java g=g.GpFt
*/ <AAZ8#^
package NetFox; r|\'9"@
import java.io.*; eo*u(@
import java.net.*; 6n6VEwYj
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public class SiteFileFetch extends Thread { e(; `9T
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SiteInfoBean siteInfoBean = null; //文件信息Bean kGuk
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long[] nStartPos; //开始位置 R4~zL!7;
long[] nEndPos; //结束位置 Wt)SdF=U/
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ZH$sMh<xg
long nFileLength; //文件长度 8} ?Y;>s\
boolean bFirst = true; //是否第一次取文件 p-'6_\F.Ke
boolean bStop = false; //停止标志 NzeI/f3K5
File tmpFile; //文件下载的临时信息 'f?&EsIV?
DataOutputStream output; //输出到文件的输出流 eFj6p<
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) OBw`!G*w
public SiteFileFetch(SiteInfoBean bean) throws IOException _[{:!?-?
{ !G"9xrr1
siteInfoBean = bean; <`p75B
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); APtselC
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 7tfivIj)e
if(tmpFile.exists ()) ueE?"Hk
{ _D2bGZN
bFirst = false; Y7:Y{7E7
read_nPos(); [6_Du6\h
} -Nlf~X
else 8pq-nuf|K
{ ]Ic?:lKN
nStartPos = new long[bean.getNSplitter()]; V^`?8P8d
nEndPos = new long[bean.getNSplitter()]; 4$?wD <
} zOao&
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} i#]aV]IT
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public void run() o1#:j?sN
{ ^0`<k
//获得文件长度 "Ql}Y1
//分割文件 :<N6i/
//实例FileSplitterFetch RhV:Z3f`6
//启动FileSplitterFetch线程 &G
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//等待子线程返回 (
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try{ M)`HK
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if(bFirst) e:$7^Y,U/
{ /Oggt^S
nFileLength = getFileSize(); W) 33;E/}
if(nFileLength == -1) K{zCp6
{ `dgM|.w5=
System.err.println("File Length is not known!"); 4j=<p@
} V{T{0b"\U
else if(nFileLength == -2) h"PS-]:CD
{ `
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System.err.println("File is not access!"); 0j{F^rph
}
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else XJ:>UNf5;
{ q4Oxs
for(int i=0;i<nStartPos.length;i++) 0~Iu7mPY
{ up3?$hUc.
nStartPos = (long)(i*(nFileLength/nStartPos.length)); Gq0]m
} @@%i(>4Z
for(int i=0;i<nEndPos.length-1;i++) 83
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{ `sk!C7%
nEndPos = nStartPos[i+1]; q6C6PPc
} tIGVB+g{F
nEndPos[nEndPos.length-1] = nFileLength; w\o)bn
} +
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} d`9W
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//启动子线程 /lS+J(I
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; kfqpI
for(int i=0;i<nStartPos.length;i++) RHwaJ;:)#
{ =mHkXHE~:
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), yHWi[7$
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), KMK&[E#r
nStartPos,nEndPos,i); I #M%%5e
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); "K|)<6J
fileSplitterFetch.start(); @,x_i8
} 861i3OXVE>
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Gh]_L+
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); hncS_ZA
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Y8)E]D
nEndPos = " + nFileLength); p~Hvl3SxR
// fileSplitterFetch[nPos.length-1].start(); 4AY
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//等待子线程结束 >H0) ph
//int count = 0; ^w:OS5 %R
//是否结束while循环 0W T#6D
boolean breakWhile = false; 5:Yck<
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while(!bStop) j>0<#SYBu
{ ?w+ QbT
write_nPos(); QP6z?j.
Utility.sleep(500); ?Yq J.F;
breakWhile = true; w`c0a&7
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for(int i=0;i<nStartPos.length;i++) NXzU0
{ tmO;:n<N
if(!fileSplitterFetch.bDownOver) )Qh>0T+(
{ "El^38Ho
breakWhile = false; G1kaF/`O
break; v!NB~"LQ
} .MDYGWKt
} *0%4l_i
if(breakWhile) AIuMX4nb
break; -"W )|oC_
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//count++; 1s#yWQ
//if(count>4) n,t6v5>88
// siteStop(); 9o-!ecx}
} kWB, ;7
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System.err.println("文件下载结束!"); UdT&cG
} / Zo~1q
catch(Exception e){e.printStackTrace ();} P3'2IzNw
} W8f`J2^"M
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//获得文件长度 +$>N]1
public long getFileSize() \,>_c
{ ?VFM]hO
int nFileLength = -1; DdBxqkh
try{ n!GWqle
URL url = new URL(siteInfoBean.getSSiteURL()); 8@E8!w&~
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); TE3*ktB{N
httpConnection.setRequestProperty("User-Agent","NetFox"); (# JMB)
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int responseCode=httpConnection.getResponseCode(); l iw,O 6
if(responseCode>=400) }o-|8P:Y
{ `vudS?
processErrorCode(responseCode); +'-rTi\
return -2; //-2 represent access is error "Dyym<J
} @ru<4`h
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String sHeader; xN6>2e
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for(int i=1;;i++) CE)*qFs
{ :`D'jF^S
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); QQ@9_[N
//Utility.log(in.readLine()); 5v"Y\k+1
sHeader=httpConnection.getHeaderFieldKey(i); _-n Y2)
if(sHeader!=null) Z;hyi'rPJ
{ A:/}`
if(sHeader.equals("Content-Length")) hQXxG/yFm
{ P3G:th@j=
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); aSUsyOe
break; l1&5uwuF
} =M/qV
} +Y7Pg'35
else M~-h-tG
break; V|TA:&:7
} L#n}e7Y9
} H ZPcd_(
catch(IOException e){e.printStackTrace ();} hHpx?9O+!
catch(Exception e){e.printStackTrace ();} GE@uOJ6H
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Utility.log(nFileLength); @8|Gh]\P
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return nFileLength; i<mevL
} 3c b[RQf
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//保存下载信息(文件指针位置) V"O9n[ |
private void write_nPos() H"_v+N5=
{ HL@TcfOe~
try{ ~x'zX-@rC
output = new DataOutputStream(new FileOutputStream(tmpFile)); VUp. j
output.writeInt(nStartPos.length); +$PFHXB
for(int i=0;i<nStartPos.length;i++) wS V@=)H\:
{ l8^y]M
// output.writeLong(nPos); r&SO:#rOSM
output.writeLong(fileSplitterFetch.nStartPos); I:F
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output.writeLong(fileSplitterFetch.nEndPos); SZ/(\kQ6
} \*uugw,\y
output.close(); bhYU5I 9
} ha5e(Hj?
catch(IOException e){e.printStackTrace ();} glx2I_y
catch(Exception e){e.printStackTrace ();} ]oEQ4
} AuAT]`
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//读取保存的下载信息(文件指针位置) /l^y}o %?
private void read_nPos() `NQ{)N0!
{ ijFV<P
try{ 'j }g
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ehE-SrkU'
int nCount = input.readInt(); -,^WaB7u\
nStartPos = new long[nCount]; :W~f;k
nEndPos = new long[nCount]; U+} y
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for(int i=0;i<nStartPos.length;i++) ;|!MI'Af
{ >b>gr OX
nStartPos = input.readLong(); UT4f (Xo
nEndPos = input.readLong(); P{cos&X|
} bEd?^h
input.close(); zks#EzQ
} J?IC~5*2
catch(IOException e){e.printStackTrace ();} N!L'W\H,
catch(Exception e){e.printStackTrace ();} F$h'p4$T
} ds]?;l"
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private void processErrorCode(int nErrorCode) dQ<(lzS~
{ g5}lLKT
System.err.println("Error Code : " + nErrorCode); ]YsR E>
} T`?n,'!(
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//停止文件下载 _IxamWpX$
public void siteStop() 4[1k\
{ '00J~j~
bStop = true; #/+I*B*y
for(int i=0;i<nStartPos.length;i++) IcFK,y%1
fileSplitterFetch.splitterStop(); f>niFPW"
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} p![&8i@ym
} vU}: U)S
//负责部分文件的抓取 s`c?:
**FileSplitterFetch.java j=W@P-
*/ Vv7PCaq
package NetFox; Xhse~=qA
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import java.io.*; 2:'lZQ
import java.net.*; (@q3^)I4
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public class FileSplitterFetch extends Thread { +9zA^0
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String sURL; //File URL E0YU[([G
long nStartPos; //File Snippet Start Position u s`}
long nEndPos; //File Snippet End Position @6b[GekZ<
int nThreadID; //Thread's ID HN68!v}C|
boolean bDownOver = false; //Downing is over cy3M^_5B<
boolean bStop = false; //Stop identical fK_~lGY(
FileAccessI fileAccessI = null; //File Access interface hgO?+x
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException lR@& Z6lw
{ W2 <3C
this.sURL = sURL; !
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this.nStartPos = nStart; H)5QqZ8
this.nEndPos = nEnd; ,QvYTJ{
nThreadID = id; F7T E|LZ
fileAccessI = new FileAccessI(sName,nStartPos);//定位 TatMf;?h&
} KO&:06V{
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public void run() 6m[9b*s7
{ P}@*Z>j:#
while(nStartPos < nEndPos && !bStop) d}-'<Z#G
{ -:SIS`0s
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try{ "w&/m}E,[
URL url = new URL(sURL); M&yqfb[
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); S}cF0B1E*
httpConnection.setRequestProperty("User-Agent","NetFox"); GNU;jSh5
String sProperty = "bytes="+nStartPos+"-"; s;1e0n
httpConnection.setRequestProperty("RANGE",sProperty); z0Xa_w=
Utility.log(sProperty); |>2:eH
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_~A~+S}
InputStream input = httpConnection.getInputStream(); DYRE1!
//logResponseHead(httpConnection); A1-qtAO]
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byte[] b = new byte[1024]; %v4ZGtKC@
int nRead; Tpzw=bC^
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) Rd%0\ B
{ 31}W6l88c
nStartPos += fileAccessI.write(b,0,nRead); 9j#@p
//if(nThreadID == 1) &{W^W8,%
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); WZ?!!
} bulboyA
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Utility.log("Thread " + nThreadID + " is over!"); 2xTT)9Tq*
bDownOver = true; ?@UAL.y
//nPos = fileAccessI.write (b,0,nRead); GMm'of#
} A5XR3$5P
catch(Exception e){e.printStackTrace ();} r1Z<:}ZwK
} r)b<{u=]
} 54q3R`y
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//打印回应的头信息 wiE]z
public void logResponseHead(HttpURLConnection con) yd>}wHt
{ ?/d!R]3
for(int i=1;;i++) wL2XNdo}<
{ &Rp"rMeW
String header=con.getHeaderFieldKey(i); -t4
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if(header!=null) 1TRN~#ix
//responseHeaders.put(header,httpConnection.getHeaderField(header)); [/ohk&
Utility.log(header+" : "+con.getHeaderField(header)); *48IF33&s
else SRCOs1(EK9
break; %&<W(|U1<
} a)9rs\Is{
} 16$y`~c-z
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public void splitterStop() l h/&__
{ 0 {R/<N
bStop = true; I/B1qw;MN
} xK;e\^v
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} h\y-L~2E
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/* s;{K!L@
**FileAccess.java U CY2]E
*//文件访问(定位,写) )#`H."Z
package NetFox; AyTx' u
import java.io.*; m;/i<:`
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public class FileAccessI implements Serializable{ tt4+ m>/T
}.{}A(^YR
//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 Nl*i5 io
RandomAccessFile oSavedFile; &U&%ka<*
long nPos; _/ Os^ >R
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public FileAccessI() throws IOException \9/1L?@
{ /cY^]VLe
this("",0); ($WE=biZ&
} qY# d+F,t
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public FileAccessI(String sName,long nPos) throws IOException P(h5=0`*PR
{ 2p:r`THvS5
oSavedFile = new RandomAccessFile(sName,"rw"); ;V.vfar
this.nPos = nPos; r4;Bu<PQN1
oSavedFile.seek(nPos); 6^YJ] w
} &
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public synchronized int write(byte[] b,int nStart,int nLen) BUC,M:J+H
{ Q$=*aUU%G
int n = -1; }<[Db}?9
try{ +LzovC@^
oSavedFile.write(b,nStart,nLen); HDS"F.l5
n = nLen; \*"`L3
} km\%BD~
catch(IOException e) nNn56&N]
{ -(;LQDG |
e.printStackTrace (); /EFq#+6
} @@}`hii
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return n; 77We;a
} UR3 $B%i
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} |E|6=%^
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/* Lk.h.ST
**SiteInfoBean.java F?4Sz#
*/ *fhX*e8y
package NetFox; B\_[R'Pf&
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public class SiteInfoBean { JTUNb'#RZ
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private String sSiteURL; //Site's URL nj2gs,k
private String sFilePath; //Saved File's Path h>3H7n.
private String sFileName; //Saved File's Name R6@uM<