/* YC&iH>jO3
**SiteFileFetch.java IG`~^-}7lR
*/ pW:h\}%`n
package NetFox; jCW>=1:JGY
import java.io.*; I.R3?+tZ
import java.net.*; [2 2IF
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public class SiteFileFetch extends Thread { P.qD,$-
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SiteInfoBean siteInfoBean = null; //文件信息Bean -/x +M-X#
long[] nStartPos; //开始位置 |GK [I
long[] nEndPos; //结束位置 -J[zJ4z#
FileSplitterFetch[] fileSplitterFetch; //子线程对象 :FG}k Y
long nFileLength; //文件长度 lUUq|Qr
boolean bFirst = true; //是否第一次取文件 hNDhee`%6
boolean bStop = false; //停止标志 P|h<|Gcp
File tmpFile; //文件下载的临时信息
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DataOutputStream output; //输出到文件的输出流 ]|u}P2
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 7;CeQx/W)W
public SiteFileFetch(SiteInfoBean bean) throws IOException [2i+f<
{ cnLC> _hY
siteInfoBean = bean; =#BeAsFfO
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); rO]C`bg
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 1Dt"Rcn"4
if(tmpFile.exists ()) yp@mxI@1
{ $k'f)E
bFirst = false; 3Xd+>'H
read_nPos(); &=H M}h
} #cdLg-v
else d.2b7q09
{ |]GEJUWtCd
nStartPos = new long[bean.getNSplitter()]; '0t j2
nEndPos = new long[bean.getNSplitter()]; ljiq +tT
} OzO_E8Kb\
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} ykM#EyN
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public void run() '')G6-c/
{ 7y[B[$P
//获得文件长度 _Fz)2h,3
//分割文件 l$zNsf.
//实例FileSplitterFetch ,1~Zqprn
//启动FileSplitterFetch线程 //J:p,AF
//等待子线程返回 o8s&n3mY}y
try{ `4k;`a
if(bFirst) s{s0#g
{ V ?_%Y<|L
nFileLength = getFileSize(); LL[+QcH
if(nFileLength == -1) +ixDB0"\
{ 3\4Cg()
System.err.println("File Length is not known!"); c'G\AbUVjE
} ]6:5<NW
else if(nFileLength == -2) >p<(CVX[
{ SN]/~>/
System.err.println("File is not access!"); @W.`'b-
} :+R5"my
else dt5gQ9(B
{ ZzKn,+
for(int i=0;i<nStartPos.length;i++) BbU&e z8P
{ ADR`j;2
nStartPos = (long)(i*(nFileLength/nStartPos.length)); [")0{LSA=
} =pk'a_P8-
for(int i=0;i<nEndPos.length-1;i++) CC)9Ks\
{ y.O? c&!
nEndPos = nStartPos[i+1]; A%GJ|h,i
} IcQ?^9%{
nEndPos[nEndPos.length-1] = nFileLength; Z(<ul<?r
} piId5Gx7
} Q1jyetk~I
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//启动子线程 mdZELRu
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 78.sf{I
for(int i=0;i<nStartPos.length;i++) <5X@r#Lz
{ ;8T<L[ ^U
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), .1pEq~>
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), zu^ AkMc
nStartPos,nEndPos,i); $<aBawLZO
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); "|Pl(HX
fileSplitterFetch.start(); /C(L(X
} xJ"KR:CD>
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), {[s<\<~B*
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); cYp}$
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", N!m%~},s//
nEndPos = " + nFileLength); V`H#|8\i
// fileSplitterFetch[nPos.length-1].start(); {$EXI]f
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//等待子线程结束 r]E$uq
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//int count = 0; !e7vc[N
//是否结束while循环 )a}5\V
boolean breakWhile = false; )R|7> 97
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while(!bStop) NRl"!FSD;"
{ o}%fs
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write_nPos(); r zvX~B6
Utility.sleep(500); 2Z97Tq
breakWhile = true; $?s^HKF~
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for(int i=0;i<nStartPos.length;i++) srSTQ\l4
{ x:bYd\
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if(!fileSplitterFetch.bDownOver) <VBw1|)$@
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breakWhile = false; "/"qg
break; |`okIqp
} 4ku /3/6
} {Q-U=me\
if(breakWhile) %*gO<U4L]
break; roA1=G\Q
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//count++; xC{NIOYn'
//if(count>4) ~3%3{aa
// siteStop(); U\
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} x L BG}C
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System.err.println("文件下载结束!"); j"V$J8)[
} 35>}$1?-6
catch(Exception e){e.printStackTrace ();} |.
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} f@{C3E dd
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//获得文件长度 p3S c4
public long getFileSize() kmoJ`W} N
{ Z])_E6.
int nFileLength = -1; n,F00YR
try{ % n{W
URL url = new URL(siteInfoBean.getSSiteURL()); $ {+.1"/[
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); zfZDtKq
httpConnection.setRequestProperty("User-Agent","NetFox"); m=9N^_
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int responseCode=httpConnection.getResponseCode(); !BX62j\?
if(responseCode>=400) f+920/>!Z
{ R\}YD*
processErrorCode(responseCode); M BT-L
return -2; //-2 represent access is error ^55?VQB
} |FFC8R%@]u
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String sHeader; >S!DIL
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for(int i=1;;i++) [FL I+;gY
{ ,
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 2UF94
//Utility.log(in.readLine()); =#tQIhX`
sHeader=httpConnection.getHeaderFieldKey(i); DS C4
if(sHeader!=null) b8>9mKs
{ ddP,_.0
if(sHeader.equals("Content-Length")) @QG1\W'
{ `k&K"jA7$
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); l:eN u}{&
break; C6w{"[Wv=X
} f
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} <<6w9wNon
else G!8pF
break; ?nW#qy!R
} As|/
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} sQZ8<DpB
catch(IOException e){e.printStackTrace ();} f>dkT'4
catch(Exception e){e.printStackTrace ();} ,7P^]V1
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Utility.log(nFileLength);
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return nFileLength; MuGg
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} 3.X0!M;x
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//保存下载信息(文件指针位置) # &83;uys
private void write_nPos() .,Qnn}:l
{ F5+_p@!i
try{ g i'agB^
output = new DataOutputStream(new FileOutputStream(tmpFile)); A#S:_d
output.writeInt(nStartPos.length); <UJJ],)^1A
for(int i=0;i<nStartPos.length;i++) 7[BL 1HI*
{ |nN/x<v
// output.writeLong(nPos); io7U[ #
output.writeLong(fileSplitterFetch.nStartPos); C-u/{CP
output.writeLong(fileSplitterFetch.nEndPos); ATM:As:<@
} ^~qs-.?
output.close(); %uVJLz
} -5 /v`
catch(IOException e){e.printStackTrace ();} ~[TKVjyO
catch(Exception e){e.printStackTrace ();} *"FLkC4
} 2?iOB6
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//读取保存的下载信息(文件指针位置) %D(prA_w
private void read_nPos() ;&6PL]/d
{ ;-pvc<_c<
try{ 1lyOp
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); @O}j:b
int nCount = input.readInt(); +esNwz_
nStartPos = new long[nCount]; 6^O?p2xpo
nEndPos = new long[nCount]; Ln2C#Uf
for(int i=0;i<nStartPos.length;i++) t *
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{ %K'*P56
nStartPos = input.readLong(); _SC
nEndPos = input.readLong(); ?vn 0%e868
} 1 {x~iZa
input.close(); ZT"|o\G^Q
} 7.
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catch(IOException e){e.printStackTrace ();} 6'Yn|A
catch(Exception e){e.printStackTrace ();} b+].Uc
} Mp"ci+Iu
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private void processErrorCode(int nErrorCode) Pgw%SMEp
{ LQ\
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System.err.println("Error Code : " + nErrorCode); VnSj:LUD
} B9IXa;
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//停止文件下载 )^f9[5ee
public void siteStop() {L4>2rF
{ t 9n
bStop = true; ]9&q'7*L
for(int i=0;i<nStartPos.length;i++) YD46Z~$
fileSplitterFetch.splitterStop(); _8b]o~[Z+
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} b^,Mw8KsO
} _SIs19"lR
//负责部分文件的抓取 fE%[j?[
**FileSplitterFetch.java 0uIV6LI
*/ R g0
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package NetFox; 4nII/cPG
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import java.io.*; qN1 -plY
import java.net.*; #EmffVtY
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public class FileSplitterFetch extends Thread { J4[x,(iq(
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String sURL; //File URL _Hd1sx
long nStartPos; //File Snippet Start Position <a+eF}*2
long nEndPos; //File Snippet End Position $}^\=p}X
int nThreadID; //Thread's ID I*W9VhIOV
boolean bDownOver = false; //Downing is over @ojg`!,
boolean bStop = false; //Stop identical h76NR
FileAccessI fileAccessI = null; //File Access interface \'??
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException zh^jWu
{ #'4<> G]
this.sURL = sURL; WE 5"A|
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this.nStartPos = nStart; k?["F%)I
this.nEndPos = nEnd; fmnRUN=
nThreadID = id; LZQFj/,Jg
fileAccessI = new FileAccessI(sName,nStartPos);//定位 20/P M9
} i|c`M/) h:
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public void run() mI7rx`4H
{ =nvAOvP{?
while(nStartPos < nEndPos && !bStop) b#p~F}qT
{ rKzv8d
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//X e*0
try{ E+m]aYu"
URL url = new URL(sURL); ?)?IZ Qj
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); V#zhGAMy.
httpConnection.setRequestProperty("User-Agent","NetFox"); Nxbd~^j
String sProperty = "bytes="+nStartPos+"-"; n b0 Py>4
httpConnection.setRequestProperty("RANGE",sProperty); ?GUz?'d
Utility.log(sProperty); Ez/\bE
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InputStream input = httpConnection.getInputStream(); z;bH<cQ
//logResponseHead(httpConnection); B:3+',i1
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byte[] b = new byte[1024]; /$FXg;h9$
int nRead; 4-]Do?
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) -7-Fd_F8
{ *xX(!t'
nStartPos += fileAccessI.write(b,0,nRead);
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//if(nThreadID == 1) [GR]!\!%~
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); bmj8WZ
} aCU7w5
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Utility.log("Thread " + nThreadID + " is over!"); cg(QjH"
bDownOver = true; (
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//nPos = fileAccessI.write (b,0,nRead); W{fULl
} +A8=R%&b)[
catch(Exception e){e.printStackTrace ();} Kk!6B
} >a&