/* ?&~q^t?u
**SiteFileFetch.java a6e{bAuq
*/ Q-gVg%'7
package NetFox; @&WHX#
import java.io.*; 1d]F$>
import java.net.*; B#SVN Lv
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public class SiteFileFetch extends Thread { ~qGW94
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SiteInfoBean siteInfoBean = null; //文件信息Bean {o)pwM"@(
long[] nStartPos; //开始位置 .\^0RyJE
long[] nEndPos; //结束位置 Hy[: _E
FileSplitterFetch[] fileSplitterFetch; //子线程对象 M%!;5
long nFileLength; //文件长度 D5?8`U
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boolean bFirst = true; //是否第一次取文件 n%J=!z3
boolean bStop = false; //停止标志 BrwC9:
File tmpFile; //文件下载的临时信息 k_0@,b3
DataOutputStream output; //输出到文件的输出流 !#O[RS
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) AO|9H`6U6F
public SiteFileFetch(SiteInfoBean bean) throws IOException p,$N-22a
{ |9c~kTjK
siteInfoBean = bean; VoZ{ I{>|
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ^Q$OzsEk
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); #T^2=7 w
if(tmpFile.exists ()) NEri{qxm
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bFirst = false; ~,HFd`
read_nPos(); !sm/BsmL7T
} J}X{8Ds9
else FHSoj=
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nStartPos = new long[bean.getNSplitter()]; CPP~,E_
nEndPos = new long[bean.getNSplitter()]; ?";SUku
} ,=m.WmXE
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} <GNLDpj
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public void run() -o6rY9\_!
{ :BF ? r
//获得文件长度
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//分割文件 A>yU0\A
//实例FileSplitterFetch UUJQc~=
//启动FileSplitterFetch线程 ilL0=[2
//等待子线程返回 !rM~
try{ 1jl!VU6
if(bFirst) E6A"Xo
{ '3( ^Zv
nFileLength = getFileSize(); G-Tmk7m
if(nFileLength == -1) |HAJDhM,l
{ G:1'}RC :
System.err.println("File Length is not known!"); mUh]`/MK$
} Mn.,?IF`K
else if(nFileLength == -2) (hzN(Dh
{ ump~)?_B
System.err.println("File is not access!"); cqNK`3:.j
} ((k"*f2%
else c~Ka) dF|
{ 7w/IHM L
for(int i=0;i<nStartPos.length;i++) #dA$k+3
{ !.]JiT'o
nStartPos = (long)(i*(nFileLength/nStartPos.length)); 7z{wYCw
} -1g:3'%
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for(int i=0;i<nEndPos.length-1;i++) 8-#%l~dr
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nEndPos = nStartPos[i+1]; g\JJkXjD#
} V0\[|E;F
nEndPos[nEndPos.length-1] = nFileLength; \n)',4mY
} Zh<;r;2
} )|F|\6:ne
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//启动子线程 FRBu8WW0L
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; n{;j
for(int i=0;i<nStartPos.length;i++) )u)=@@k21
{ &7aWVKon
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), e`D}[G#
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), /~[Lr
nStartPos,nEndPos,i); 6Xlzdt
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); nVb@sI{{k
fileSplitterFetch.start(); 0mY Y:?v
} 5</$dcG
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), g7*)|FOb
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); I &t~o
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Eah6"j!B8n
nEndPos = " + nFileLength); I{`7 0
// fileSplitterFetch[nPos.length-1].start(); wHc
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//等待子线程结束 200yN+ ec
//int count = 0; o\IMYT
//是否结束while循环 uepyH
boolean breakWhile = false; qLN^9PdEE
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while(!bStop) g`7XE
{ sHP-@
write_nPos(); eU?hin@X
Utility.sleep(500); RLB3 -=9t
breakWhile = true; *T|B'80
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for(int i=0;i<nStartPos.length;i++) {meX2Z4
{ nM
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if(!fileSplitterFetch.bDownOver) j2Zp#E!
{ $B+| &]a
breakWhile = false; *eVq(R9?T
break; tli.g
} )ZJvx%@i
} <j'V}|3
if(breakWhile) p\6cpf
break; a V3:{oL
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//count++; IV QH
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//if(count>4) U2oCSo5:3N
// siteStop(); Ykbg5Z
} +]db-
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System.err.println("文件下载结束!"); 'Ts:.
} qS!r<'F3dP
catch(Exception e){e.printStackTrace ();} )?L=o0
} `2~>$Tr
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//获得文件长度 gg;r;3u
public long getFileSize() E h%61/
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int nFileLength = -1; ^[L(kHOGzk
try{ )xGAe#E~j
URL url = new URL(siteInfoBean.getSSiteURL()); [M_{~1xX
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 30Q
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httpConnection.setRequestProperty("User-Agent","NetFox"); :QCL9QZ'
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int responseCode=httpConnection.getResponseCode(); bf3!|Um
if(responseCode>=400) yqK4 "F&
{ qfkHGW?1/j
processErrorCode(responseCode); \u3\ TJ
return -2; //-2 represent access is error Pf?kNJ*Tv)
} *dzZOe>,
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String sHeader; &c`-/8c
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for(int i=1;;i++) Tt[zSlIMx
{ BG{f)2F\
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); TQ
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//Utility.log(in.readLine()); 2EY"[xK|
sHeader=httpConnection.getHeaderFieldKey(i); ?HZp@&
if(sHeader!=null) &v\F ah U
{ cpY{o^
if(sHeader.equals("Content-Length")) Hh<H~s [
{ ~,'{\jDrS
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); =bC
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break; A5?"
} uGKjZi
} e5h*GKF
else H^_,e= j
break; N!A20Bv
} y!e]bvN
} }fpya2Xt
catch(IOException e){e.printStackTrace ();} fGgt[f[
catch(Exception e){e.printStackTrace ();} #%"q0"
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Utility.log(nFileLength); (iIw}f)w
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return nFileLength; 0r]n
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} GnV0~?
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//保存下载信息(文件指针位置) eh#37*-
private void write_nPos() E' 5*w6
{ f49kf**
try{ O9gq <d
output = new DataOutputStream(new FileOutputStream(tmpFile)); ;rh.6D l
output.writeInt(nStartPos.length); A 'qe2]
for(int i=0;i<nStartPos.length;i++) ^-;S&=
{ E(qYCafC
// output.writeLong(nPos); WSThhI
output.writeLong(fileSplitterFetch.nStartPos); +,Dc0VC?
output.writeLong(fileSplitterFetch.nEndPos); G#iQX`
} q:{#kv8
output.close(); )!y>2$20 r
} ;%|im?
catch(IOException e){e.printStackTrace ();} ;D5>iek5
catch(Exception e){e.printStackTrace ();} }E`Y.=
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} T.q2tC[bR
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//读取保存的下载信息(文件指针位置) ` ]|X_!J-
private void read_nPos() UuG%5 ZC
{ ! VwU=5
try{ \j)Evjw
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); -K"'F`;W
int nCount = input.readInt(); 8(3(kZx S
nStartPos = new long[nCount]; iT@`dEZ.
nEndPos = new long[nCount]; D6SUzI1+H
for(int i=0;i<nStartPos.length;i++) |1tKQ0jg
{ FU|brSt
nStartPos = input.readLong(); Z\$HgG
nEndPos = input.readLong(); uL'f8Pqg
} N_t,n^i9>*
input.close(); PSrx!
} &\zYbGU
catch(IOException e){e.printStackTrace ();} F<4rn
catch(Exception e){e.printStackTrace ();} ,"qCz[aDN1
} "EW8ll7r
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private void processErrorCode(int nErrorCode) [hJ1]RW8
{ OY*y<