/* ^n*)7K[
**SiteFileFetch.java RuLi,'u
*/ [<Mx2<8f
package NetFox; 2%DSUv:H%
import java.io.*; vv72x]
import java.net.*; x,=&JtKVc
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public class SiteFileFetch extends Thread { |kyX3~
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SiteInfoBean siteInfoBean = null; //文件信息Bean >6ni")Q9
long[] nStartPos; //开始位置 dPW#C5dm
long[] nEndPos; //结束位置 tqz3zIQ
FileSplitterFetch[] fileSplitterFetch; //子线程对象 3+)J
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long nFileLength; //文件长度 ? ^0:3$La
boolean bFirst = true; //是否第一次取文件 Z)I+@2
boolean bStop = false; //停止标志 29;?I3<
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File tmpFile; //文件下载的临时信息 g;H=6JeG/
DataOutputStream output; //输出到文件的输出流 Lu?C-$a C
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) @x*c1%wg
public SiteFileFetch(SiteInfoBean bean) throws IOException L O}@dL
{ f}o\*|k_|
siteInfoBean = bean; ?h$NAL?
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ef8s<5"4
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); AHD=<7Rs
if(tmpFile.exists ()) ]0Y4U7W
{ y_*
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bFirst = false; P{8iJ`rBG
read_nPos(); w#ZoZZ wh
} 5dx$HE&b)
else -RE^tW*Yy
{ I,E?h?6Y
nStartPos = new long[bean.getNSplitter()]; &fDIQISC
nEndPos = new long[bean.getNSplitter()]; Tr_w]'
} !{ y@od@T
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} JB%',J
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public void run() S ^!n45l
{ DBo%fYst
//获得文件长度 J9\Cm!H
//分割文件 dH;8mb|#'
//实例FileSplitterFetch >@U*~Nz
//启动FileSplitterFetch线程 ] ]u
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//等待子线程返回 1auIR/=-
try{ KI.q@zO6|
if(bFirst) 6/f7<
{ k9<;woOBO
nFileLength = getFileSize(); 35h8O,Y
if(nFileLength == -1) 'F/~o1\.
{ fW{(lPx
System.err.println("File Length is not known!"); {0L1X6eg
} `xKp%9
else if(nFileLength == -2) ^%d\qd`
{ YX!{P=Ua
System.err.println("File is not access!"); n7zm>&
} hwPw]Ln/
else %41m~Wh2
{ 3(="YbZ
for(int i=0;i<nStartPos.length;i++) "H=6j)Cb
{ 0CWvYC%e
nStartPos = (long)(i*(nFileLength/nStartPos.length)); '*Z1tDFS
} `XJG(Oas\
for(int i=0;i<nEndPos.length-1;i++) R
{ ?fQ'^agq
nEndPos = nStartPos[i+1]; @bi}W`
} RF`.xQ26=
nEndPos[nEndPos.length-1] = nFileLength; S4Pxc
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} (9tX5$e6N
} EGGWrl}1
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//启动子线程 XD!W: uvb
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ]tim,7s
for(int i=0;i<nStartPos.length;i++) `}D,5^9]
{ Q{O+
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Giid~e33
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), S){)Z
nStartPos,nEndPos,i); M-$%Rzl_
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); lXx=But
fileSplitterFetch.start(); ^6jV_QM#
} ^4y,W]JUDt
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 6,^>mNm
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); g1;:KzVv
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", zv|2:4H
nEndPos = " + nFileLength); l^!
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// fileSplitterFetch[nPos.length-1].start(); 5us:adm[pD
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//等待子线程结束 eln)BW#
//int count = 0; HSw;^E)1
//是否结束while循环 2% MC Yn
boolean breakWhile = false; FVMD>=k
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while(!bStop) P:hBt\5B
{ U2ohHJ``
write_nPos(); 6gkV*|U,e
Utility.sleep(500); /?wtF4
breakWhile = true; nyX2|m&
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for(int i=0;i<nStartPos.length;i++) '<gI8W</
{ g!|=%(G=
if(!fileSplitterFetch.bDownOver) <3oWEm
{ I~[F|d>
breakWhile = false; ;/bewivNJ
break; H/"-Z;0{
} vRznw&^E
} q?H|o(
if(breakWhile) }V'}E\\
break; 2pZXZ
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//count++; n#cC+>*>+
//if(count>4) %7QV&[4!
// siteStop(); }cM}Oavh
} V~UN
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System.err.println("文件下载结束!"); 3(``#7
} `b?R#:G
catch(Exception e){e.printStackTrace ();} M5i%jZk
} [ieI;OG;
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//获得文件长度 +*\u :n
public long getFileSize() Cw~q4A6'
{ Vo4,@scG
int nFileLength = -1; j SHk{T!J
try{ .L+6 $8m
URL url = new URL(siteInfoBean.getSSiteURL()); ?#Ge.D~u
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Ah1]Y}sy
httpConnection.setRequestProperty("User-Agent","NetFox"); M
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int responseCode=httpConnection.getResponseCode(); .7O*pJ2(H
if(responseCode>=400) 0q^>ZF-@
{ x!hh"x
processErrorCode(responseCode); # ' =a=8-$
return -2; //-2 represent access is error jY&k
} uY0lR:|
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String sHeader; !zBhbmlKt
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for(int i=1;;i++) &g#@3e1>
{ }?lrU.@zg
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); sm9k/(-
//Utility.log(in.readLine()); t1]K<>g
sHeader=httpConnection.getHeaderFieldKey(i); C=-=_>Q,L<
if(sHeader!=null) 3W V"U
{ 3\AU 72-
if(sHeader.equals("Content-Length")) '-wj9OU
{ ( B!uy`
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); <xup'n^7C
break; "WlZ)wyF%
} 6d:zb;Iz
} <<UB ^v m
else 6o^,@~:R
break; `34zkPB??
} j
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} ?}qttj
catch(IOException e){e.printStackTrace ();} '|ad_M
catch(Exception e){e.printStackTrace ();} Ig$(3p
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Utility.log(nFileLength); U1Q:= yD
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return nFileLength; \1d( 9jR
} ~W*FCG#E
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//保存下载信息(文件指针位置) }I2wjO
private void write_nPos() T
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{ oVnvO iAc
try{ y>:N{|
output = new DataOutputStream(new FileOutputStream(tmpFile)); 1}S S+>`
output.writeInt(nStartPos.length); rUwZMli
for(int i=0;i<nStartPos.length;i++) bw(a6qKK
{ #:jHp44J
// output.writeLong(nPos); V4hiGO[
output.writeLong(fileSplitterFetch.nStartPos); Fiv3 {.
output.writeLong(fileSplitterFetch.nEndPos); ,ZaRy$?
} {SOr#{1z*
output.close(); <5d~P/,
} FO+Zue.RS
catch(IOException e){e.printStackTrace ();} svsq g{9z
catch(Exception e){e.printStackTrace ();} B|Du@^$
} ]Gzm^6v
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//读取保存的下载信息(文件指针位置) '>NCMB{*
private void read_nPos() 7X`l&7IXP
{
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try{ )}g(b=
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); XYjV.j\
int nCount = input.readInt(); H
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nStartPos = new long[nCount]; +j#+8Ze
nEndPos = new long[nCount]; c7<wZ
for(int i=0;i<nStartPos.length;i++) u$h
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{ i% w3 /m
nStartPos = input.readLong(); 8k2?}/+
nEndPos = input.readLong(); F7
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} ?e`^P
input.close(); rT M}})81
} *7:>EP
catch(IOException e){e.printStackTrace ();} Nc1"g1JR
catch(Exception e){e.printStackTrace ();} &@G:G(
} PZ2;v<
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private void processErrorCode(int nErrorCode) [\'%?BH(^
{ t;\kR4P
System.err.println("Error Code : " + nErrorCode); 81](T<
} !4]TXH0f
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//停止文件下载 6,o~\8ia
public void siteStop() |_LU~ 7./
{ H0:E(}@
bStop = true; gGvz(R:y
for(int i=0;i<nStartPos.length;i++) c*(bO3 b
fileSplitterFetch.splitterStop(); |^0XYBxQ
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} _7<FOOM%8y
} J{'>uD.@
//负责部分文件的抓取 .nB0 h
**FileSplitterFetch.java 83E7k]7]
*/ uya.sF0]9B
package NetFox; ;l4[%xld
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import java.io.*; wi;Br[d
import java.net.*; }]e-{C}
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public class FileSplitterFetch extends Thread { F{Z~ R
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String sURL; //File URL ! _f9NK
long nStartPos; //File Snippet Start Position YT8vP~
long nEndPos; //File Snippet End Position 5}:-h>
int nThreadID; //Thread's ID ?u-|>N>
boolean bDownOver = false; //Downing is over ZNJ@F<