/* ' P"g\;Ij
**SiteFileFetch.java \+PIe7f_
*/ h5zVGr
package NetFox; %"$@%"8;3
import java.io.*; `TKD<&oL
import java.net.*; b'@we0V@S
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public class SiteFileFetch extends Thread { 9ptFG]lZ
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SiteInfoBean siteInfoBean = null; //文件信息Bean T3&`<%,f
long[] nStartPos; //开始位置 F
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long[] nEndPos; //结束位置 !>^JSHR4t
FileSplitterFetch[] fileSplitterFetch; //子线程对象 B0UJq./`
long nFileLength; //文件长度 ub?K,
boolean bFirst = true; //是否第一次取文件 Pt< s* (
boolean bStop = false; //停止标志 72db[
File tmpFile; //文件下载的临时信息 -`c:}m
DataOutputStream output; //输出到文件的输出流 'W. Vr4
} /^C|iS7
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) vq'c@yw;
public SiteFileFetch(SiteInfoBean bean) throws IOException ` (4pu6uT
{ QP I+y8N=
siteInfoBean = bean; w=b(X
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//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); }odV_WT
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); TW&DFKK`
if(tmpFile.exists ()) *gsAn<
{ ZFh+x@
bFirst = false; I0= NaZ7
read_nPos(); r8M Zvm2
} q`|CrOzO
else wVK*P
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{ vFmJ;J
nStartPos = new long[bean.getNSplitter()]; Zy"=y+e!E;
nEndPos = new long[bean.getNSplitter()]; {OMgd3%14
} $\Lyi#<
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} }2>"<)
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public void run() v@
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{ FpV`#6i7
//获得文件长度 2h~-
//分割文件 3C>qh{z"
//实例FileSplitterFetch Y#V8(DTyH
//启动FileSplitterFetch线程 EYS>0Y
//等待子线程返回 Do-^S:.
try{ t@zdmy
if(bFirst) VAQ)Hc]
{ | FM
}
nFileLength = getFileSize(); Q%=YM4;
if(nFileLength == -1) KpZ:Nh$
{ <EX7WA
System.err.println("File Length is not known!"); czWw~'."
} Ibr%d2yS=
else if(nFileLength == -2) ReB7vpd
{ RNJFSD.
System.err.println("File is not access!"); GUp;AoQ
} PBqy F
else :>3=gex@^0
{ Ws[D{dS/
for(int i=0;i<nStartPos.length;i++) U..<iNQE5
{ 8^ep/ b&|
nStartPos = (long)(i*(nFileLength/nStartPos.length)); .QWhK|(.!
} `$;+g ,
for(int i=0;i<nEndPos.length-1;i++) x!7yU_ls`
{ m9$:9yRm
nEndPos = nStartPos[i+1]; 3fS}:!sQ
} 9t:]
nEndPos[nEndPos.length-1] = nFileLength; t1]6(@mj5
} Csst[3V
} GuQRn
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//启动子线程 w<wV]F*
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ,{}#8r` +*
for(int i=0;i<nStartPos.length;i++) kEN#u
{ Mhpdaos
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), -E>)j\{PX7
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), t%0?N<9YkU
nStartPos,nEndPos,i); .J.vC1 4gi
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 85Y|CN] vQ
fileSplitterFetch.start(); kT oOIx
} >%%=0!,yX
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), laREjN/\`
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); I}0_nge
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", mf$j03tu
nEndPos = " + nFileLength); 4YA./j%'
// fileSplitterFetch[nPos.length-1].start(); L4'[XcY
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//等待子线程结束 khX|"d360
//int count = 0; Fz"ff4Bx [
//是否结束while循环 ^$?qT60%d|
boolean breakWhile = false; C3 ;[e0.1b
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while(!bStop) "~+.Af
{ %vqT#+x
write_nPos(); hl/itSl$
Utility.sleep(500); __N.#c/l{
breakWhile = true; SG]K
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for(int i=0;i<nStartPos.length;i++)
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{ pdz'!I
if(!fileSplitterFetch.bDownOver) ,@CfVQz
{ Yv\!vW7I
breakWhile = false; Gp2!xKgm
break; x7ATI[b[
} W'/>et
} <0j{ $.
if(breakWhile) <|F-Dd
break; ;iX<`re~
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//count++; *@M3p}',M
//if(count>4) X0i3 _RVa
// siteStop(); @EZ>f5IO+
} /tKGwX]y
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System.err.println("文件下载结束!"); zy)i1d
} {BOLPE-
catch(Exception e){e.printStackTrace ();} PdE>@0X?M
} rK=6]j(K
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//获得文件长度 %$n02"@
public long getFileSize() L3c*LL
{ Q1V2pP+=@
int nFileLength = -1; x:-`o_Q*i
try{ w-rOecwFvu
URL url = new URL(siteInfoBean.getSSiteURL()); mK\aI
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); e- 6(F4
httpConnection.setRequestProperty("User-Agent","NetFox"); @PXXt#
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int responseCode=httpConnection.getResponseCode(); <94WZ?{p
if(responseCode>=400) u4"r>e6_B
{ ~ x`7)3
processErrorCode(responseCode); -Bv12ymLG
return -2; //-2 represent access is error oyvtZ/@
} h$&rE@N|
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String sHeader; pt})JMm
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for(int i=1;;i++) n~%}Z[5D
{ :~-i&KNk
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); {3 o%d:
//Utility.log(in.readLine()); z93nYY$`Y
sHeader=httpConnection.getHeaderFieldKey(i); _LLshV3
if(sHeader!=null) yWuIu>VJ
{ "::9aYd!
if(sHeader.equals("Content-Length")) _3&/(B%H
{ ZR
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); gz\j('~-D
break; IUawdB5CB
} R0IF'
} yA}nPXrd
else |_I[1%&`N
break; s01$fFJgO
} pn*d[M|k
} I~k=3,7<
catch(IOException e){e.printStackTrace ();} swt\Ru6,
catch(Exception e){e.printStackTrace ();} .+uVgSN
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Utility.log(nFileLength); JD-Becz
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return nFileLength; )|:8zDuJ
} 5~yQ>h
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*vD/(&pQ1:
//保存下载信息(文件指针位置) pLo;#e8'f
private void write_nPos() ChVY
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{ Xky@[Td*
try{ &m4f1ZO*
output = new DataOutputStream(new FileOutputStream(tmpFile)); ku-cn2M/
output.writeInt(nStartPos.length); D:6N9POB
for(int i=0;i<nStartPos.length;i++) C#T)@UxBZ
{ `|JI\&z
// output.writeLong(nPos); 'Ye]eL,I\
output.writeLong(fileSplitterFetch.nStartPos); <L%HG
output.writeLong(fileSplitterFetch.nEndPos); !,R
} /O_0=MLp
output.close(); %cd]xQpCp
} d(\ 1 }l
catch(IOException e){e.printStackTrace ();} IY~
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catch(Exception e){e.printStackTrace ();} `43vxcMg
} 63SVIc~wT
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//读取保存的下载信息(文件指针位置) wNbTM.@
private void read_nPos() i(z+a6^@|
{ 35}P0+
try{ nHE+p\
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 9M;I$_U`vj
int nCount = input.readInt(); <G&WYk%u*
nStartPos = new long[nCount]; Zr5'TZ`$
nEndPos = new long[nCount]; Lq%[A*`^
for(int i=0;i<nStartPos.length;i++) . ^BWR
{ VDPxue
nStartPos = input.readLong(); d{?)q
nEndPos = input.readLong(); U:J /\-
} -5o?#%
input.close(); #qPVQt
} q~mcjbLz
catch(IOException e){e.printStackTrace ();} e1oFnu2R
catch(Exception e){e.printStackTrace ();} ADTU{6UPS
} gp%tMTI1
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private void processErrorCode(int nErrorCode) IM$'J
{ <.: 5Vx(Aw
System.err.println("Error Code : " + nErrorCode); l
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} W&Y4Dq^
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>Zi|$@7t-
//停止文件下载 }'%$7vL`Ft
public void siteStop() Qh/lT$g
{ DrW/KU,{+(
bStop = true; ><MGZ?-N
for(int i=0;i<nStartPos.length;i++) \%Pma8&d
fileSplitterFetch.splitterStop(); >3v0yh_3
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} ,^Ex}Z
} gGF$M
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//负责部分文件的抓取 *4zoAs lU1
**FileSplitterFetch.java (L]T*03#
*/ 4mki&\lw`
package NetFox; )tJL@Qo
fN~8L}!l
^w.k^U=B
import java.io.*; S^*(ALFPj
import java.net.*; &p