/* qKNX^n;
**SiteFileFetch.java ?0
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*/ |U)m'W-(q
package NetFox; G347&F)
import java.io.*; d*Q:[RUf,
import java.net.*; itClCEOA
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public class SiteFileFetch extends Thread { H<T9$7Yr%r
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SiteInfoBean siteInfoBean = null; //文件信息Bean Ja<pvb
long[] nStartPos; //开始位置 tl9=u-D13@
long[] nEndPos; //结束位置 Mwp[?#1j
FileSplitterFetch[] fileSplitterFetch; //子线程对象 y"q7Gx*^j
long nFileLength; //文件长度 \9k$pC+l
boolean bFirst = true; //是否第一次取文件 j}$dYbf$
boolean bStop = false; //停止标志 WwG +Xa
File tmpFile; //文件下载的临时信息 jR-DH]@y
DataOutputStream output; //输出到文件的输出流 &S[tI$
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) pn3f{fQ
public SiteFileFetch(SiteInfoBean bean) throws IOException Hbwjs?Vq?]
{ q ,6 y{RyS
siteInfoBean = bean; 5(e?,B }
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); G%0G$3W"
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); H^_]' ~.
if(tmpFile.exists ()) ?g9mDe;k
{ E)z[@Np
bFirst = false; JA0$Fz
read_nPos(); m| 8%%E}d
} Q -;ltJ
else N5 ITb0Tv
{ }%LwaRT
nStartPos = new long[bean.getNSplitter()]; `~|8eKFq!
nEndPos = new long[bean.getNSplitter()]; pgT XyAP{
} U7O]g'BP
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} +bK[3KG4F5
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public void run() xHEkmL`)4
{ Ch-56
//获得文件长度 ;4.D%
//分割文件 <K4`GT"n
//实例FileSplitterFetch rx`G*k{X
//启动FileSplitterFetch线程 L-ans2?
//等待子线程返回 6ExUNp @U>
try{ a,X=!oJ
if(bFirst) lOp/kGmn+
{ E-h`lDoJ
nFileLength = getFileSize(); R:=C
if(nFileLength == -1) o%#Z
{ T{=.mW^ x
System.err.println("File Length is not known!"); tMGkm8y-A
} s'%KKC
else if(nFileLength == -2) ,Nl]rmI
{ aIaydu+ \
System.err.println("File is not access!"); !R,9Pg*Ey
} ?3
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else A6w/X`([O
{ ~:7AHK2
for(int i=0;i<nStartPos.length;i++)
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{ %-"?
nStartPos = (long)(i*(nFileLength/nStartPos.length)); AMqu}G
} : sIZ+3
for(int i=0;i<nEndPos.length-1;i++) G#V5E)Dx
{ w`XwW#!}@$
nEndPos = nStartPos[i+1]; Yo0%5 noz
} 7Cf%v`B4D
nEndPos[nEndPos.length-1] = nFileLength; FI@2KM
} 6S?a57;&W
} ^Q8m)0DP
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//启动子线程 !fdni}f)
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; {#M=gDhbX
for(int i=0;i<nStartPos.length;i++) qmUq9bV
{ 9_IR%bm
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), }D.?O,ue
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ?#]K54?
nStartPos,nEndPos,i); Yjz'lWg
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); iqf+rBL
fileSplitterFetch.start(); -k\7k2
} )f#@`lf[<
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Y{y #us1
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ^EU&6M2
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 'R6D+Vk/
nEndPos = " + nFileLength); @'[w7HsJ
// fileSplitterFetch[nPos.length-1].start(); QI>yi&t
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//等待子线程结束 j9C=m"O
//int count = 0; 5n;|K]UW
//是否结束while循环 p}uTqI
boolean breakWhile = false; M64zVxsd
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while(!bStop) {y0*cC
{ :K{`0U&l5
write_nPos(); tF)K$!GR[
Utility.sleep(500); Lc^nNUzPo
breakWhile = true; $I_04k#t
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for(int i=0;i<nStartPos.length;i++) >j?5MIm03
{ E*Vx^k$
if(!fileSplitterFetch.bDownOver) YlOYgr^
{ 4@#1G*OO
breakWhile = false; k1>%wR
break; {npKdX
} aA%$<ItH
} >rlQY>5pH
if(breakWhile) "%ag^v9
break; L.(T"`-i
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//count++; R@>R@V>c
//if(count>4) [a;lYsOsJ
// siteStop(); )Y~q6D K
} hXS'*vO"
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System.err.println("文件下载结束!"); G/(oQA
} fT._Os?i
catch(Exception e){e.printStackTrace ();} mquna"}N
} &dvJg
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//获得文件长度 ` 2|~Z
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public long getFileSize() hX)r%v:
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int nFileLength = -1; /0SG
try{ &{&lCBN
URL url = new URL(siteInfoBean.getSSiteURL()); H*|Bukgt/M
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); &.kg8|s{
httpConnection.setRequestProperty("User-Agent","NetFox"); t,N-|
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int responseCode=httpConnection.getResponseCode(); 7x9YA$IE
if(responseCode>=400) &m8B%9w
{ cv:nlq)
processErrorCode(responseCode); !=&]#-;b
return -2; //-2 represent access is error 9YHSL[
} SfJ/(q
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String sHeader; l@1f L%f
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for(int i=1;;i++) /dOQ4VA\
{ =i%2/kdi0b
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); PyYKeo=
//Utility.log(in.readLine()); 0x^$q?
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sHeader=httpConnection.getHeaderFieldKey(i); pY =?r{@
if(sHeader!=null) spO?5#
{ o~P8=1t
if(sHeader.equals("Content-Length")) b{sE#m%r
{ 1:YDN.*
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); s>~&:GUwR
break; 9[T#uh!DC
} JPQ02&e
} Xki/5roCQ|
else 8SAz,m!W)
break; q*{"6"4(
} UMhM8m!=o
} &[*<>
catch(IOException e){e.printStackTrace ();} 08k1 w,6W
catch(Exception e){e.printStackTrace ();} *B:{g>0
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Utility.log(nFileLength); ^fK8~g;rB
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return nFileLength; 5tq$SF42X
} MiRH i<g0
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//保存下载信息(文件指针位置) w5n>hz_5
private void write_nPos() nj7Ri=lyS
{ w5|@vB/pj
try{ '2[ _U&e
output = new DataOutputStream(new FileOutputStream(tmpFile)); ^"buF\3L
output.writeInt(nStartPos.length); Bl`e+&b
for(int i=0;i<nStartPos.length;i++) 6w1:3~a
{ Kyl(
// output.writeLong(nPos); dje3&a
output.writeLong(fileSplitterFetch.nStartPos); ) 0}o bPp
output.writeLong(fileSplitterFetch.nEndPos); LiV]!*9$KG
} >^InNJd
output.close(); u]dpA
} y
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catch(IOException e){e.printStackTrace ();} Ds}6{']K
catch(Exception e){e.printStackTrace ();} Wnf`Rf)1z
} |=%$7b\C
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//读取保存的下载信息(文件指针位置) |um)vlN;9
private void read_nPos()
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{ 7gQt
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try{ r1?LKoJOn
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); A{+ZXu}
int nCount = input.readInt(); -;~_]t^a
nStartPos = new long[nCount]; wkm
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nEndPos = new long[nCount]; pu>LC6m3a
for(int i=0;i<nStartPos.length;i++) ~Q%QA._R?
{ R*&3i$S
nStartPos = input.readLong(); ;QEGr|(
nEndPos = input.readLong(); -5>g 0o2
} T@vVff
input.close(); uo%O\}#u9
} Q o=
catch(IOException e){e.printStackTrace ();} t]&n_]`{.
catch(Exception e){e.printStackTrace ();} ^9{ 2
} KPO((G0&
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private void processErrorCode(int nErrorCode) H+ M~|Ju7
{ Ppp&3h[dW)
System.err.println("Error Code : " + nErrorCode); &Y#9~$V=
} HE,wEKp
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//停止文件下载 9n%W-R.
public void siteStop() ljf9L:L
{ ]g)%yuox9F
bStop = true; ovfw _
for(int i=0;i<nStartPos.length;i++) 1Gqtd^*;
fileSplitterFetch.splitterStop(); dl;A'/(t
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} ?t%5 /
} <