/* ;Y5"[C9|
**SiteFileFetch.java ER~m
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package NetFox; AmNmhcN
import java.io.*; Adp:O"-H1o
import java.net.*; #80DM
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public class SiteFileFetch extends Thread { h~)oiT2v
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SiteInfoBean siteInfoBean = null; //文件信息Bean 6*u#^">,<
long[] nStartPos; //开始位置 J;,6ydf8!
long[] nEndPos; //结束位置 j38>,9u,
FileSplitterFetch[] fileSplitterFetch; //子线程对象 %wn|H>
long nFileLength; //文件长度 [h SE^
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boolean bFirst = true; //是否第一次取文件 gVjI1{WTK
boolean bStop = false; //停止标志 r\Nf309~
File tmpFile; //文件下载的临时信息 xZZW*d_b
DataOutputStream output; //输出到文件的输出流 rK)aR
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) FZ'|z8Dm
public SiteFileFetch(SiteInfoBean bean) throws IOException R L7OFfMe
{ =Bo (*%
siteInfoBean = bean; m,NUNd#)\
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Jy?s'tc
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); YzJ\< tkp
if(tmpFile.exists ()) n=!]!'h\:
{ NPy{ =#k4
bFirst = false; 1^ZQXUzl%i
read_nPos(); $BKGPGmh
} 3on]#/"1b
else #ak2[UOT
{ jH#Tt;
nStartPos = new long[bean.getNSplitter()]; HTiqErD2_
nEndPos = new long[bean.getNSplitter()]; t<s:ut)Q!
} g BfYm
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} g((glr)6M
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public void run() x
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//获得文件长度 *X- 6]C
//分割文件 pwAawm
//实例FileSplitterFetch jq#gFt*
//启动FileSplitterFetch线程 `_Iy8rv:P
//等待子线程返回 9[K".VeT]
try{ cr Hd$~q,
if(bFirst) A8 V7\
{ )HbsUm#
nFileLength = getFileSize(); 6Yhd [I3
if(nFileLength == -1) Si#I^aF`%
{ )jkX&7x
System.err.println("File Length is not known!"); sUA==k
} A*#.7Np!"
else if(nFileLength == -2) "`]G>,r_
{ H0<(j(JK
System.err.println("File is not access!"); wz^Q,Od
} 6d/;GyG
else hbm%{*d
{ a9S0glbwf
for(int i=0;i<nStartPos.length;i++) \; ! oG
{ xL8r'gV@
nStartPos = (long)(i*(nFileLength/nStartPos.length)); vf6_oX<Os
} }z{2~ 0,
for(int i=0;i<nEndPos.length-1;i++) /Y$UJt
{ qW*JB4`?a
nEndPos = nStartPos[i+1]; y'\BpP
} j\l9|vpp
nEndPos[nEndPos.length-1] = nFileLength; a+A^njk
} 9gP-//L@
} gB/4ro8
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//启动子线程 lbM)U
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; z}I =:
for(int i=0;i<nStartPos.length;i++) m(MPVY<X
{ H",w$$eF
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 2ghTAsUx9
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ~2
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nStartPos,nEndPos,i); ]7<}EG
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ~aKM+KmtPH
fileSplitterFetch.start(); "|P8L|
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} \Tf[% Kt x
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 6*yt^[W
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); v4M1uJ8
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Ay?KE{Qs '
nEndPos = " + nFileLength); hP1}Do
// fileSplitterFetch[nPos.length-1].start(); ;',hwo_LBf
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//等待子线程结束 oU/CXz?H
//int count = 0; }:JE*D|
//是否结束while循环 CjtBQ5
boolean breakWhile = false; -+vA9,pI
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while(!bStop) ;. jnRPo";
{ VI83 3
write_nPos(); zadn`B#2
Utility.sleep(500); dnRS$$9#
breakWhile = true; K)NB{8 _
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for(int i=0;i<nStartPos.length;i++) 8?p40x$m%
{ P-B3<~*i!
if(!fileSplitterFetch.bDownOver) y b 7
{ pPI'0x
breakWhile = false; 3&H#LGoV$
break; S"t6 *fWr
} TVaD',5_V%
} rHS;wT
if(breakWhile) y2"PKBK\_
break; $raxf80A
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//count++; H{XbKLU
//if(count>4) z^@.b
// siteStop(); =m<; Jx5
} h8R3N?S3#
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System.err.println("文件下载结束!"); }b$?t7Q)
} q?R)9E$h
catch(Exception e){e.printStackTrace ();} #Az#dt]H
} kzMul<>sl
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//获得文件长度 oJ
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public long getFileSize() ;3 N0)
{ ,'FH[2
int nFileLength = -1; +I>u${sVx*
try{ $P=B66t
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URL url = new URL(siteInfoBean.getSSiteURL()); ;m/h?Y~
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); X@ zw;Se
httpConnection.setRequestProperty("User-Agent","NetFox"); hDO\Q7
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int responseCode=httpConnection.getResponseCode(); 2kP0//
if(responseCode>=400) DC&3=Nd
{ h=:*cqp4
processErrorCode(responseCode); {ylY"FA
return -2; //-2 represent access is error +"sjkdum1
} K-_XdJ\
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String sHeader; ^M:Y$9r_s
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for(int i=1;;i++) UN
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{ i6S5 4&^!
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); w^AY= Fc
//Utility.log(in.readLine()); iMT[sb
sHeader=httpConnection.getHeaderFieldKey(i); >MTrq%.
if(sHeader!=null) =:w]EpH"
{ 3/aK#TjK
if(sHeader.equals("Content-Length")) _1c0pQ ^}3
{ eD(;Wn
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); &oz^dlw
break; :V9%R~h/
} Q)/V>QW
} _/Sqw
else >/]`
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break; #Nv^F
} H%nA"-
} N$!aP/b
catch(IOException e){e.printStackTrace ();} y;\m1o2
catch(Exception e){e.printStackTrace ();} "jUM}@q5
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Utility.log(nFileLength); R&-Vm3mc3
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return nFileLength; \&6^c=2=
} iBM;$0Y
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//保存下载信息(文件指针位置) h7P<3m}
private void write_nPos() <dD)>Y.
{ +55+%oGl
try{ ee}HQ.}Ja
output = new DataOutputStream(new FileOutputStream(tmpFile)); )bgaqca_{
output.writeInt(nStartPos.length); fi,h`mdT?
for(int i=0;i<nStartPos.length;i++) {vhP'!a6W
{ t@;r~Sb
// output.writeLong(nPos); NT0im%
output.writeLong(fileSplitterFetch.nStartPos); 6CV9ewr
output.writeLong(fileSplitterFetch.nEndPos); joRrsxFU
} :~{Nf-y0`1
output.close(); m-HL7&iG$
} rRQKW_9mB
catch(IOException e){e.printStackTrace ();} (a9>gLI0
catch(Exception e){e.printStackTrace ();} xU!eT'Y
} FK+`K<
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//读取保存的下载信息(文件指针位置) ls@j8bVv^
private void read_nPos() >Y6iLQ$X
{ Ncr*F^J4
try{ 1!=^mu8
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ;{Nc9d
int nCount = input.readInt(); v,d
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nStartPos = new long[nCount]; :Ldx^UO
nEndPos = new long[nCount]; t)l
for(int i=0;i<nStartPos.length;i++) (3Dz'X
{ m#,AD,s
nStartPos = input.readLong(); V sQ~Y,7
nEndPos = input.readLong(); p9-s' F|@i
} KK';ho,W
input.close(); 63fgl+
} .Y5o&at6s
catch(IOException e){e.printStackTrace ();} fc<~R
catch(Exception e){e.printStackTrace ();} skP'- ^F~
} i@L_[d^|j`
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private void processErrorCode(int nErrorCode) ?J ,K[.z
{ Pk{%2\%&2
System.err.println("Error Code : " + nErrorCode); REGk2t.L
} %PlA9@:IZ
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//停止文件下载 Ih<.2
public void siteStop() yi;pn Z
{ 7V2xg h!W
bStop = true; jdX*
for(int i=0;i<nStartPos.length;i++) IAi|4,y_L
fileSplitterFetch.splitterStop(); )m$MC25
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} tF:AqR:(~
} lSG]{
//负责部分文件的抓取 6E{(_i
**FileSplitterFetch.java rcz9\@M
*/ X$*]$Ge>
package NetFox; _>E=.$
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import java.io.*; oTg
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import java.net.*; 8 .t3`FGH
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