/* tJybR"NQ
**SiteFileFetch.java %~y>9K
*/ Sg4{IU
package NetFox; |-)8=QDz)r
import java.io.*; #=VYq4B=
import java.net.*; 9?8PMh.
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public class SiteFileFetch extends Thread { dt^h9I2O
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SiteInfoBean siteInfoBean = null; //文件信息Bean 7YR|6{@
long[] nStartPos; //开始位置 y$_@C8?H
long[] nEndPos; //结束位置 R|v'+bv
FileSplitterFetch[] fileSplitterFetch; //子线程对象 H]pI$t3~
long nFileLength; //文件长度 FJ-H
;
boolean bFirst = true; //是否第一次取文件 XbqMWQN*
boolean bStop = false; //停止标志 ]8}51y8
File tmpFile; //文件下载的临时信息 yu)^s!UY;
DataOutputStream output; //输出到文件的输出流 AYgXqmH~+
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) DU0/if9.
public SiteFileFetch(SiteInfoBean bean) throws IOException
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{ ^lAM /
siteInfoBean = bean; 8;V9%h`P>
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); nYFrp)DLK
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); FY ms]bv
if(tmpFile.exists ()) YZj*F-}
{ NC#F:M;b
bFirst = false; <S041KF.{6
read_nPos(); *8WB($T}
} |1RVm?~i
else m1U:&{:^
{ T!8^R|!a6
nStartPos = new long[bean.getNSplitter()]; '*`#xNu[
nEndPos = new long[bean.getNSplitter()]; @p
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public void run() ~/]]H;;^u
{ #3QPcoxa
//获得文件长度 b7Jxv7$e
//分割文件 iN[x
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//实例FileSplitterFetch =9X1 +x
//启动FileSplitterFetch线程 68Gywk3]=u
//等待子线程返回 _ i}W1i
try{ l2qvYNMw
if(bFirst) d51'[?(
{ Aj)Q#Fd[
nFileLength = getFileSize(); xwf-kwF8^
if(nFileLength == -1)
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{ t/\
System.err.println("File Length is not known!"); I70c,4_G
} "FWx;65CR
else if(nFileLength == -2) ,|{`(y/v
{ /{\ /e"5
System.err.println("File is not access!"); I I+y
} l6ym <V(1p
else ;^5k_\
{ yGdX>h
for(int i=0;i<nStartPos.length;i++) =FrB{Eu
{ s*ZE`/SM3
nStartPos = (long)(i*(nFileLength/nStartPos.length)); } #rTUX
} t$18h2yOL
for(int i=0;i<nEndPos.length-1;i++) d )O^(y1r
{ e@Lxduq
nEndPos = nStartPos[i+1]; NOo?
} (Jk&U8y
nEndPos[nEndPos.length-1] = nFileLength; lPZ(c%P
} n^Ca?|}
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} +e-F`k
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//启动子线程 #$I@V4O;#
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; D\AVZ76F1
for(int i=0;i<nStartPos.length;i++) Uj):}xgi'
{ l1)~WqhE}
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), X0VSa{
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), >u?.gJm ~
nStartPos,nEndPos,i); V4n~Z+k
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); .eR1\IAm
fileSplitterFetch.start(); r3l1I}
} P>VoA
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ) *~A|[
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); zuV%`n
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", "bm|p/A
nEndPos = " + nFileLength); m2c'r3 UEu
// fileSplitterFetch[nPos.length-1].start(); )l7XZ_gw'
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//等待子线程结束 >fH0>W+!
//int count = 0; "' JnFM
//是否结束while循环
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boolean breakWhile = false; ]JrD@ Vy
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while(!bStop) &-3e3)
{ eDJnzh83
write_nPos(); X0G,tl
Utility.sleep(500); ;6W ]f([
breakWhile = true; &h-_|N
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for(int i=0;i<nStartPos.length;i++) C !j3@EZ$
{ <]qNjsdb9"
if(!fileSplitterFetch.bDownOver) 3iCe5VF
{ wa"0`a:`;
breakWhile = false; rwRZGd *p
break; {821e&r
} CS7b3p!I
} |U%NPw5
if(breakWhile) 'J,UKK\5
break; LwC?t3n
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//count++; qGk.7wf%
//if(count>4) Q@ VA@N=w
// siteStop(); @dWA1tM
} l<v{8:,e #
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System.err.println("文件下载结束!"); GV0\+A"vD
} |+Y-i4t
catch(Exception e){e.printStackTrace ();} _:r8UVAT.
} ,:?ibE=
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//获得文件长度 /Q1 b%C
public long getFileSize() _3`GZeGV
{ UPhO=G
int nFileLength = -1; *k{Llq
try{ y%TqH\RKv
URL url = new URL(siteInfoBean.getSSiteURL()); kR<sSLEb
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); f2WVg;Z
httpConnection.setRequestProperty("User-Agent","NetFox"); aTvyzr1
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int responseCode=httpConnection.getResponseCode(); yKML{N1D
if(responseCode>=400) o?baiOkH
{ .>"xp6
processErrorCode(responseCode); '12m4quO
return -2; //-2 represent access is error qs]W2{-4~
} y\FQt];z)
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#{6VdWZ
String sHeader; xWxHi6U(
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for(int i=1;;i++) A;co1,]gR
{ f(Xin3#'
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); $H<_P'h-B
//Utility.log(in.readLine()); C*YQ{Mz(f
sHeader=httpConnection.getHeaderFieldKey(i); -'&l!23a~
if(sHeader!=null) XJ7B?Zg
{ .\b.l@O<Z
if(sHeader.equals("Content-Length")) b `P6Ox3
{ jJ2rfdfj
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); gq('8*S
break; ?p{-Yp*h
} OLG)D#m(4/
} rmjuNy=(
else i+`8$uz
break; ,a5q62)q
} 4Wl`hF
} K_MEd1l
catch(IOException e){e.printStackTrace ();} g2f"tu_/%
catch(Exception e){e.printStackTrace ();} {QEvc
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Utility.log(nFileLength); ui?@:=
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return nFileLength; (Aw@}!
} \; XJ$~>
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//保存下载信息(文件指针位置) o "r
private void write_nPos() YIN* '!N
{ `Am|9LOT
try{ y>C
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output = new DataOutputStream(new FileOutputStream(tmpFile)); "smU5 s,P
output.writeInt(nStartPos.length); /
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for(int i=0;i<nStartPos.length;i++) \4 b^*`d
{ ?8753{wk
// output.writeLong(nPos); %g?M?D8Ud3
output.writeLong(fileSplitterFetch.nStartPos); v}!lx)#
output.writeLong(fileSplitterFetch.nEndPos); 61_PSScSY
} Ja1 `S+
output.close(); `@y~ JNf!
} CV[ 9i
catch(IOException e){e.printStackTrace ();} J{4=:feIC?
catch(Exception e){e.printStackTrace ();} $}4ao2
} D?BegF
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//读取保存的下载信息(文件指针位置) 2 4od74\
private void read_nPos() Af\@J6viF7
{ ",~ZO<P
try{ $bhI2%_`M
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); z^wod
int nCount = input.readInt(); oyiG04H&
nStartPos = new long[nCount]; n{W(8K6d@[
nEndPos = new long[nCount]; /K2[`+-
for(int i=0;i<nStartPos.length;i++) =o~mZ/ 7=M
{ %]F/!n
nStartPos = input.readLong();
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nEndPos = input.readLong(); Wt%Wpb8
} /\,3AInLb
input.close(); I?1BGaAA
} blomB2vQ
catch(IOException e){e.printStackTrace ();} o5]-Kuw`
catch(Exception e){e.printStackTrace ();} ea{zL
} ]R~hzo
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private void processErrorCode(int nErrorCode) iklZ[G%A0
{ }se3y
System.err.println("Error Code : " + nErrorCode); |7K>`
} "uplk8iCJ
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//停止文件下载 xsU%?"r
public void siteStop() (e;/Smol
{ _k}Qe;
bStop = true; #bcZ:D@FC
for(int i=0;i<nStartPos.length;i++) J<0sT=/2$
fileSplitterFetch.splitterStop(); QUkP&