/* e~$aJO@B.R
**SiteFileFetch.java kg$w<C@#"
*/ &LhR0A
package NetFox; ,{#L i
import java.io.*; -.UUa
import java.net.*; H$xUOqL
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public class SiteFileFetch extends Thread { -qB{TA-.\
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SiteInfoBean siteInfoBean = null; //文件信息Bean R=L-Ulhk
long[] nStartPos; //开始位置 h{e?Fl
long[] nEndPos; //结束位置 twql)lbx
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ZV~9{E8
long nFileLength; //文件长度 d-#yN:}0
boolean bFirst = true; //是否第一次取文件 &t74T"(d
boolean bStop = false; //停止标志 VCUsvhI
File tmpFile; //文件下载的临时信息 AH#Dk5#G
DataOutputStream output; //输出到文件的输出流 (w/lZt
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) }A7]bd
public SiteFileFetch(SiteInfoBean bean) throws IOException y~rtYI
{ )`<7qT_BM
siteInfoBean = bean; DA/\[w?J
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Bvz&
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tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); =UZm4=T
if(tmpFile.exists ()) \Jr7Hy1;
{ OJ)XJL
bFirst = false; o 0H.DeP
read_nPos(); C.hRL4+;Zm
} ajD/)9S
else !l1jQq_mK
{ - !s=`9o
nStartPos = new long[bean.getNSplitter()]; j$khGR!
nEndPos = new long[bean.getNSplitter()]; f,8PPJ:,
} c.;<+dYsm*
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public void run() :n$?wp
{ $Q56~AP
//获得文件长度 %Yny/O\e%
//分割文件 lAPPng`
//实例FileSplitterFetch =b#,OXQ
//启动FileSplitterFetch线程 8"J6(KS
//等待子线程返回 v cb}Gk
try{ ~> 5
if(bFirst) wZ~eE'zx+
{ nbSu|sX~r5
nFileLength = getFileSize(); `5t
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if(nFileLength == -1) 3aEO9v,n
{ !FbW3p f
System.err.println("File Length is not known!"); l AZBlO
} z6bIv}
else if(nFileLength == -2) #|acRZ9
}
{ -o`|A767
System.err.println("File is not access!"); $R/@%U)-o
} WD?COUEox
else 4Pr@<S"U
{ p`oHF 5
for(int i=0;i<nStartPos.length;i++) &uG@I=}TIY
{ %CG=mTP
nStartPos = (long)(i*(nFileLength/nStartPos.length)); *&rV}vVP^
} 5@{~830
for(int i=0;i<nEndPos.length-1;i++) KvuM{UI5
{ B7nm7[V
nEndPos = nStartPos[i+1]; )zvjsx*e=J
} O}q(2[*i
nEndPos[nEndPos.length-1] = nFileLength; ^%m~V LH
} jo[U6t+pj7
} ?bl9e&/!
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//启动子线程 j9$kaEf
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 8jU6N*p/
for(int i=0;i<nStartPos.length;i++) 5Q@4@b{C
{ Ia*T*qJu
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), -v?)E
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ^uWj#
nStartPos,nEndPos,i); n.xOu`gj
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); t$b{zv9C
fileSplitterFetch.start(); OT}^dPQe
} 0`"DYJ}d
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), RV, cQ K
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); MF.$E?_R
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", c:_dW;MJ0
nEndPos = " + nFileLength); ;F\sMf{
// fileSplitterFetch[nPos.length-1].start(); Pxe7 \e
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//等待子线程结束 XQ$9E?|=
//int count = 0; <5sP%Fs )
//是否结束while循环 A<[X@o}92
boolean breakWhile = false; /3CdP'c
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while(!bStop) F=~LVaF/_
{ TvwkeOS#}7
write_nPos(); qM:*!Aq0g
Utility.sleep(500); A,! YXl[
breakWhile = true; bDM;7fFp$
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for(int i=0;i<nStartPos.length;i++) Z^ }4bR]
{ QF9$SCmv
if(!fileSplitterFetch.bDownOver)
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{ s f<NC>-
breakWhile = false; Cc!LJ
break; ?/^x)Nm
} C+Pw
} ?4MZT5 .
if(breakWhile) +"Mlj$O
break; HWi: CDgm
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//count++; w.R2' WR
//if(count>4) ETtoY<`#
// siteStop(); &Vmx<w
} $o>6Io|D
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System.err.println("文件下载结束!"); 2, r{zJ8
} vy1N,8a
catch(Exception e){e.printStackTrace ();} lxXIu8
} @[w.!GW%
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//获得文件长度 XT~]pOE;D
public long getFileSize() 3pI)
{ 299uZz}Y
int nFileLength = -1; %n:ymc
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try{ pl5Q2zq%
URL url = new URL(siteInfoBean.getSSiteURL()); @rt}z+JF
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); W,sPg\G 3
httpConnection.setRequestProperty("User-Agent","NetFox"); UWg+7RL
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int responseCode=httpConnection.getResponseCode(); \4roM1&[
if(responseCode>=400) u^]Z{K_B
{ !:9s>0';N
processErrorCode(responseCode); Q[UYNQ0w
return -2; //-2 represent access is error X(fT[A_2C
} _"'0^F$I
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String sHeader; A6%~+9
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for(int i=1;;i++) !DNk!]|
{ V( SRw
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); SH#!Y
//Utility.log(in.readLine()); N2e]S8-
sHeader=httpConnection.getHeaderFieldKey(i); P~ 7p~ke
if(sHeader!=null) (`FY{]Wz!
{ - {|
if(sHeader.equals("Content-Length")) UA}N
{ |t&gyj
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); Kzf^ras4u
break; `beU2N
} W"ldQ
} $>!tpJw
else g"Gj8QLDz
break; |aMeh;X t
} `w/b];e1)
} D./3,z
catch(IOException e){e.printStackTrace ();} 2&d|L|->
catch(Exception e){e.printStackTrace ();} +a}>cAj*
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Utility.log(nFileLength); mUjM5ceAXO
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return nFileLength; ,1|0]:
} =X}s^KbI{
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//保存下载信息(文件指针位置) vDp|9VY?
private void write_nPos() -Gmg&yQ9
{ n>i}O!agg
try{ muKCCWy#
output = new DataOutputStream(new FileOutputStream(tmpFile)); !0!r}#P
output.writeInt(nStartPos.length); TwLQ;Q
for(int i=0;i<nStartPos.length;i++) 7bC)Co#:
{ { K*
// output.writeLong(nPos); XD$;K$_7
output.writeLong(fileSplitterFetch.nStartPos); ?N(opggiD
output.writeLong(fileSplitterFetch.nEndPos); ;J&9l
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} <A@qN95m
output.close(); Ul%D}(,
} '(!U5j
catch(IOException e){e.printStackTrace ();} ;iTZzmB
catch(Exception e){e.printStackTrace ();} 19 <Lgr
} +N:=|u.g
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//读取保存的下载信息(文件指针位置) ^muPjM+D
private void read_nPos() `sPH7^R
{ J!@`tR-
try{ :zLeS-
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); .rs\%M|X
int nCount = input.readInt(); /w2jlu}yt
nStartPos = new long[nCount]; '
nEndPos = new long[nCount]; WDq~mi
for(int i=0;i<nStartPos.length;i++) QTT2P(Pz
{ $61j_;WF`
nStartPos = input.readLong(); A~%h*nZc%I
nEndPos = input.readLong(); +w'He9n
} %Tm8sQ)1
input.close(); B7ty*)i?
} 1_0\_|
catch(IOException e){e.printStackTrace ();} kH }HFl
catch(Exception e){e.printStackTrace ();}
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} FvT;8ik:3
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private void processErrorCode(int nErrorCode) n>aH7
{ 68,(+vkB
System.err.println("Error Code : " + nErrorCode); v JPX`T|
} x>m=n_
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//停止文件下载 B96"|v$
public void siteStop() ] R-<v&O
{ UTph(U#
bStop = true; n06Jg+
for(int i=0;i<nStartPos.length;i++) atmTI`i
fileSplitterFetch.splitterStop(); To@77.'
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} 9G=HG={
} D;QV`Z%I
//负责部分文件的抓取 v!77dj 6I
**FileSplitterFetch.java WpPI6bd
*/ MMS#Ci=Lj
package NetFox; URb
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1J @43>u{
import java.io.*; :elTqw>pn
import java.net.*; kQQhZ8Ch
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public class FileSplitterFetch extends Thread { lJ/{.uK
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String sURL; //File URL @1^:V-=
long nStartPos; //File Snippet Start Position IM$I=5ye
long nEndPos; //File Snippet End Position C3GI?|b
int nThreadID; //Thread's ID }j6<S-s~
boolean bDownOver = false; //Downing is over gi5Ffvs$
boolean bStop = false; //Stop identical d6ABgQi0
FileAccessI fileAccessI = null; //File Access interface gPzp/I
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException G;Thz
{ >C"QV`+
this.sURL = sURL; /{HK0fd
this.nStartPos = nStart; >J>|+W
this.nEndPos = nEnd; V07? sc<
nThreadID = id; 1H]E:Bq
fileAccessI = new FileAccessI(sName,nStartPos);//定位 &RbT&
} 'Bb@K[=s
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public void run() 8jz[;.jP",
{ F}dq~QCzw
while(nStartPos < nEndPos && !bStop) 7UA|G2Zr
{ j3yz"-53e
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try{ hD!9[Gb
URL url = new URL(sURL); >$dkA\&p