/* h jWRU#
**SiteFileFetch.java '}LH,H:%G
*/ (w4#?_
package NetFox; m[]pIXc(
import java.io.*; P?\rRB
import java.net.*;
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public class SiteFileFetch extends Thread { 7ug mZO}lL
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SiteInfoBean siteInfoBean = null; //文件信息Bean G74<sD
long[] nStartPos; //开始位置 fM
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long[] nEndPos; //结束位置 WY0u9M4
FileSplitterFetch[] fileSplitterFetch; //子线程对象 3p$ZHH.UP
long nFileLength; //文件长度 Qa(u+
boolean bFirst = true; //是否第一次取文件 ~r&Q\G
boolean bStop = false; //停止标志 "fS9Nx3
File tmpFile; //文件下载的临时信息 _U/etlDTO
DataOutputStream output; //输出到文件的输出流 Oj~k 1+*
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) {n
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public SiteFileFetch(SiteInfoBean bean) throws IOException $F;$-2
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siteInfoBean = bean; sRt|G
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); P4Wd=Xoz6
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); (47jop0RDQ
if(tmpFile.exists ()) CK'Cf{S
{ Ff%m.A8d,4
bFirst = false; )Q FT$rmX
read_nPos(); ;k(|ynXv
} >/
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else (f
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{ E8#y9q
nStartPos = new long[bean.getNSplitter()]; j3sUZg|d
nEndPos = new long[bean.getNSplitter()]; q>!T*BQ
} UyTq(7uo
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public void run() #d(6q$IE
{ XlDVJx<&J
//获得文件长度 # |w,^tV
//分割文件
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//实例FileSplitterFetch H*; J9{
//启动FileSplitterFetch线程 - stSl*
//等待子线程返回 ur9 -F^$
try{ !Z<Z"R/
if(bFirst) w[:5uo(
{ ~O|j*T
nFileLength = getFileSize(); tJ2l_M^
if(nFileLength == -1) qt/"$6]%
{ <$,iYx
System.err.println("File Length is not known!"); 8t9sdqM/C
} E5-8tHV
else if(nFileLength == -2) r(%#@?&
{ :mL\KQ
System.err.println("File is not access!"); :t^=~xO9
} !OC?3W:^_
else |)
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{ qd!$ nr
for(int i=0;i<nStartPos.length;i++) |;9OvR> A
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); ^=.|\
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} PN+,M50;1
for(int i=0;i<nEndPos.length-1;i++) nLdI>c9R
{ };29'_.."x
nEndPos = nStartPos[i+1]; k&yy_r
} JFR,QUT
nEndPos[nEndPos.length-1] = nFileLength; TS-m^Y'R
} b>Vs5nY!
} BU]9eF!>h
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//启动子线程 )k0bP1oGS
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; >:KPvq!0
for(int i=0;i<nStartPos.length;i++) dRas9g
{ Lr40rLx;u
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), |Z#)1K
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ;y4
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nStartPos,nEndPos,i); oA_AnD?G+
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); |F9/7 z\5+
fileSplitterFetch.start(); B@.U\.
} w}oH]jVKL6
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), l&;#`\s!V
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); z}u
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", c>=[|F{{e
nEndPos = " + nFileLength); wyvs#T
// fileSplitterFetch[nPos.length-1].start(); 6i=m1Yk
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//等待子线程结束 f0MHh5
//int count = 0; R"=G?d)
//是否结束while循环 @qg=lt|(F
boolean breakWhile = false; \HTXl]
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while(!bStop) Ms^,]Q1{
{ 3u+~!yz
write_nPos(); E83{4A4
Utility.sleep(500); 1=W>zC
breakWhile = true; RHVMlMX
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for(int i=0;i<nStartPos.length;i++)
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{ &ATjDbW*(
if(!fileSplitterFetch.bDownOver) }g>&l.2X
{ ]>*Z 1g;
breakWhile = false; _g$6vx&
break; {9_CH<$W%U
} <=^YIp
} QJ>+!p*
if(breakWhile) g0_8:Gs}^
break; z4_>6sf{
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//count++; o`h F1*yp
//if(count>4) %UgyGQeo
// siteStop(); LxsB.jb-
} T9N /;3
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System.err.println("文件下载结束!"); PlTY^N6Hn
} OW1[Y-o[
catch(Exception e){e.printStackTrace ();} el- %#0
} XZIj' a0d
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//获得文件长度 GZ*cV3Y`&
public long getFileSize() viY _Y.Yjy
{ F9-xp7T
int nFileLength = -1; b _cD
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try{ <:>a51HBX
URL url = new URL(siteInfoBean.getSSiteURL()); :2K0/@<x
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Z`q?p E>R
httpConnection.setRequestProperty("User-Agent","NetFox"); gbQrSJs!Zh
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int responseCode=httpConnection.getResponseCode(); CXvL`d"
if(responseCode>=400) lE$X9yIt
{ 60^dzi!vs
processErrorCode(responseCode); Dgp"RUP
return -2; //-2 represent access is error QTtcGU
} ewY+a ,t
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String sHeader; N\<M4fn
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for(int i=1;;i++) Fag%#jxI
{ `?91Cw=`
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); { p1#H`
//Utility.log(in.readLine()); ^5j9WV
sHeader=httpConnection.getHeaderFieldKey(i); !W .ooy5(
if(sHeader!=null) m~#98ZJ^
{ F.^1|+96
if(sHeader.equals("Content-Length")) >$?$&+e}
{ ([tbFI}A
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); }\P9$D+
break; `NyvJt^<
} _z{:Q
} +hV7o!WxC
else b":cj:mxL
break; YM/GSSq
} Rb|\!
} Th'6z#h:U
catch(IOException e){e.printStackTrace ();} :hCp@{
catch(Exception e){e.printStackTrace ();} g' H!%<
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Utility.log(nFileLength); UR:cBr
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return nFileLength; ;r"YZs&Xd
} ^szCf|SM
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//保存下载信息(文件指针位置) )TBBYCL3
private void write_nPos() O: :X$O7
{ ixE72bX
try{ d%u|)
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output = new DataOutputStream(new FileOutputStream(tmpFile)); Ef:.)!;jy
output.writeInt(nStartPos.length); H'&x4[J:
for(int i=0;i<nStartPos.length;i++) >N{K)a
{ rRly0H
// output.writeLong(nPos); wh[XJ_xY
output.writeLong(fileSplitterFetch.nStartPos); 31Y+bxQ
output.writeLong(fileSplitterFetch.nEndPos); ]'EtLFv)
} bL ] *K$
output.close(); qOqQt=ObU
} RU>T?2
catch(IOException e){e.printStackTrace ();} WENPS*0oS]
catch(Exception e){e.printStackTrace ();} ZGH2
} A +e
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//读取保存的下载信息(文件指针位置) {ajaM'x
private void read_nPos() 0!eZ&.h?4
{ oV&AJ=|\
try{ q1.w8$
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); y4w{8;Mh
int nCount = input.readInt(); t+|c)"\5h
nStartPos = new long[nCount]; (kK6=Mrf
nEndPos = new long[nCount]; ^8ZVB.Fv
for(int i=0;i<nStartPos.length;i++) a=.A/;|0*
{ "z1\I\
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nStartPos = input.readLong(); $*\[I{Zau}
nEndPos = input.readLong(); jyb/aov
} )F8G q,
input.close(); WIa4!\Ky!
} \|L ~#{a
catch(IOException e){e.printStackTrace ();} !X
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catch(Exception e){e.printStackTrace ();} pGc_Klq
} OjCTTz
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private void processErrorCode(int nErrorCode) z
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{ 2$V]XSe
System.err.println("Error Code : " + nErrorCode); ^dJ/>?1
} yCwBZ/C
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//停止文件下载 Q"h/o"-h
public void siteStop() 2,{m>fF
{ E=_M=5]
bStop = true; Mm;kB/1
for(int i=0;i<nStartPos.length;i++) b*+Od8r
fileSplitterFetch.splitterStop(); /U4F\pZl
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} /59jkcA+
} 7hlgm7^
//负责部分文件的抓取 7q&Ru|T33
**FileSplitterFetch.java !_3Rd S
*/ zYvf}L&]h
package NetFox; 8$xd;+`y'
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import java.io.*; N,0l5fD~T
import java.net.*; C!6?.\U/:c
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public class FileSplitterFetch extends Thread { D(yU:^L
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String sURL; //File URL =;#+8w=^
long nStartPos; //File Snippet Start Position 3xj
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long nEndPos; //File Snippet End Position JL5
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int nThreadID; //Thread's ID C_mPw
boolean bDownOver = false; //Downing is over j"{|* _6E_
boolean bStop = false; //Stop identical A.8{LY;
FileAccessI fileAccessI = null; //File Access interface -r )Q| U
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 4E/Q+^?
{ uH!uSB2
this.sURL = sURL; JKN0:/t7Q
this.nStartPos = nStart; klmRU@D
this.nEndPos = nEnd; vPz$jeA
nThreadID = id; xdGmiHN
fileAccessI = new FileAccessI(sName,nStartPos);//定位 l*V]54|ON3
} t}n:!v"|+O
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public void run()
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{ 9y "R,
while(nStartPos < nEndPos && !bStop) 6c>cq\~E
{ 96x$Xl;
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try{ 1AiqB Rs
URL url = new URL(sURL); 8@pY:AY
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Y7g^ ?6
httpConnection.setRequestProperty("User-Agent","NetFox"); lf3QMr+
String sProperty = "bytes="+nStartPos+"-"; Jn!-Wa,
httpConnection.setRequestProperty("RANGE",sProperty); f86h"#4
Utility.log(sProperty); \Jq$!foYx
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InputStream input = httpConnection.getInputStream(); ;;#28nV
//logResponseHead(httpConnection); Y%eFXYk.
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byte[] b = new byte[1024]; wq+% O,
int nRead; b{q-o <