/* _}T )\o
**SiteFileFetch.java =^_a2_BBl
*/ Kltqe5
package NetFox; 9\=SG"e(
import java.io.*; N.ZuSkRM
import java.net.*; (hIo0.
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public class SiteFileFetch extends Thread { iun_z$I<+Z
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SiteInfoBean siteInfoBean = null; //文件信息Bean '#.D`9YI<
long[] nStartPos; //开始位置 >J_P[v
long[] nEndPos; //结束位置 V?p`rrj@
FileSplitterFetch[] fileSplitterFetch; //子线程对象 _={mKKoHs
long nFileLength; //文件长度 OPogH=vf
boolean bFirst = true; //是否第一次取文件 B?y[ %i
boolean bStop = false; //停止标志 ugTnz$
File tmpFile; //文件下载的临时信息 EQ|Wke
DataOutputStream output; //输出到文件的输出流 h(4\k?C5
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) Mm9*$g!R
public SiteFileFetch(SiteInfoBean bean) throws IOException @L0)k^:
{ |L:X$oM
siteInfoBean = bean; `0!%jz=
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); =A$d)&
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); h'_$I4e)
if(tmpFile.exists ()) )ZFc5m^+u
{ jc#gn&4C
bFirst = false; `~41>mM%
read_nPos(); ,Tk53 "
} |B64%w>Y
else .f>7a;V?}
{ raU_Z[
nStartPos = new long[bean.getNSplitter()]; }1lZW"{e[
nEndPos = new long[bean.getNSplitter()]; Z5EII[=$o
} kf9]nIo
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} TgJ6O,0
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public void run() F}1._I`-
{ 1\)lD(J\C
//获得文件长度 6BEDk!
//分割文件 KDA2
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//实例FileSplitterFetch s|TO9N)pO
//启动FileSplitterFetch线程 D*sL&Rt][Y
//等待子线程返回 \%V !&
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try{ soX^$l
if(bFirst) "I{Lcn~!@
{ *Gj`1#Z$
nFileLength = getFileSize(); yF+mJ >kj
if(nFileLength == -1) jJ,y+o
{ =e9<.{]S/
System.err.println("File Length is not known!"); X;#Ni}af
} NdXC8
else if(nFileLength == -2) G{Uqp'=G
{ UDnCHGq
System.err.println("File is not access!"); s;]"LD@
} c+8 Y|GB
else 7| j
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{ P:1eWP
for(int i=0;i<nStartPos.length;i++) &4l!2
{ (|3?wX'2U
nStartPos = (long)(i*(nFileLength/nStartPos.length)); ^BW8zu@=O
} L6ypn)l
for(int i=0;i<nEndPos.length-1;i++) K5??WB63B
{ ?`6Mfpvj96
nEndPos = nStartPos[i+1]; Y/pK
} ,Z7Ky*<j
nEndPos[nEndPos.length-1] = nFileLength; mmCGIX
} b!nA.`T
} 3x
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//启动子线程 XIl#0-E0X
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; -Hy>
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for(int i=0;i<nStartPos.length;i++) .f!:@fX>=
{ k
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), s5MG#M 9
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), %?8.UW\m
nStartPos,nEndPos,i); 6{fo.M?
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Qkw_9
fileSplitterFetch.start(); &W&A88FfZU
} NL!xkcXO
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), s=z$;1C
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); [?g}<fa
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", AU9:Gu@M/
nEndPos = " + nFileLength); 2+R]q35-
// fileSplitterFetch[nPos.length-1].start(); pF}E`U=Z
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//等待子线程结束 Lg2PP#r
//int count = 0; c^5fhmlt
//是否结束while循环 th0>u.hJ
boolean breakWhile = false; 6k+tO%{~
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while(!bStop) uD ;T
{ >Tn[CgH]7
write_nPos(); Dr}elR>~G=
Utility.sleep(500); K;TTGK
breakWhile = true; xq%BR[1
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for(int i=0;i<nStartPos.length;i++) i9peQ61{
{ eV0eMDY5
if(!fileSplitterFetch.bDownOver) V{}TG]
{ v)*eLX$
breakWhile = false; 7CX5pRNL
break; DnF|wS
} _~*ba+{
} CdtwR0
if(breakWhile) R F;u1vEQ8
break; \z.p [;'ir
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//count++; Y`xAJ#=
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//if(count>4) Xxm7s S
// siteStop(); /5\{(=0
} o+S?j*mv@
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System.err.println("文件下载结束!"); oV~S4|9:
} 8yuTT^
catch(Exception e){e.printStackTrace ();} owO&[D/
} pT;xoe
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//获得文件长度 dmMrZ1u2
public long getFileSize() QCfR2Nn}
{ 9a'}j#mJo
int nFileLength = -1;
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try{ g_"B:DR
URL url = new URL(siteInfoBean.getSSiteURL()); @ZcI]G%
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 8%b-.O:_$
httpConnection.setRequestProperty("User-Agent","NetFox"); xQqZi b5I
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int responseCode=httpConnection.getResponseCode(); &Hl
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if(responseCode>=400) ip*UujmNyR
{ tYUo;V
processErrorCode(responseCode); q6P5:@
return -2; //-2 represent access is error qp/nWGj
} X>MDX.Z
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String sHeader; o~VZ%B
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for(int i=1;;i++)
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{ >i2WYT
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); D#X&gE
//Utility.log(in.readLine()); : Z3]Dk;y
sHeader=httpConnection.getHeaderFieldKey(i); {=P}c:iW
if(sHeader!=null) k_ijVfI9
{ B)&z% +
if(sHeader.equals("Content-Length")) 2K{)8;^
{ tSunO-\y
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); er>@- F7w
break; Mbtk:GuY
} |<LW(,|A
} 5^36nEoA(
else &3YXDNm
break; .[vYT.LE
} @P<Mc)o^
} M` |E)Y
catch(IOException e){e.printStackTrace ();} q>VvXUyK,
catch(Exception e){e.printStackTrace ();} ,)t/1oQ}>^
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Utility.log(nFileLength); ?L>}(
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return nFileLength; g|x*sZR~Y
} X@@7Qk
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//保存下载信息(文件指针位置) +Pb@@C&
private void write_nPos() ~P+;_
{ S~.%G)R
try{ WL1$LLzN
output = new DataOutputStream(new FileOutputStream(tmpFile)); -KiI&Q
output.writeInt(nStartPos.length); Ny 7vId
for(int i=0;i<nStartPos.length;i++) 7^Y`'~Y^
{ s^-o_K\*c
// output.writeLong(nPos); e1 P(-V
output.writeLong(fileSplitterFetch.nStartPos); >W=^>8u
output.writeLong(fileSplitterFetch.nEndPos); biAa&
} wRQMuFGY
output.close(); 3aEO9v,n
} _S6SCSFc
catch(IOException e){e.printStackTrace ();} $WZHkV
catch(Exception e){e.printStackTrace ();} -|/*S]6kK
} )F%zT[Auph
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//读取保存的下载信息(文件指针位置) wXU gxa
private void read_nPos() lgh+\pj
{ RJA#cv~f
try{ pL{:8Ed
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); k\lU
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int nCount = input.readInt(); 8POLp9>X
nStartPos = new long[nCount]; '8UhYwyr
nEndPos = new long[nCount]; qJEtB;J'
for(int i=0;i<nStartPos.length;i++) #^bn~
{ Ia*T*qJu
nStartPos = input.readLong(); K7]IAV
nEndPos = input.readLong(); (Ei} :6,}
} jI,?*n<
input.close(); y_f^ dIK*=
} &W-1W99auE
catch(IOException e){e.printStackTrace ();} <=PYu:]h
catch(Exception e){e.printStackTrace ();} >&uR=Yd
} 1_G5uHO
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private void processErrorCode(int nErrorCode) kDK0L3}nr]
{ Zi ;7.P qL
System.err.println("Error Code : " + nErrorCode); 5:X^Q.f;
} 1F94e)M)"
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//停止文件下载 @!2vS@f
public void siteStop() (c1Kg
{ mA0|W#NB
bStop = true; ='\E+*[$I
for(int i=0;i<nStartPos.length;i++) 4W36VtQ@E
fileSplitterFetch.splitterStop();
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} %2EHYBQjN
} .vhEm6wJUM
//负责部分文件的抓取 Kma-W{vGD
**FileSplitterFetch.java t
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*/ 2N}h<Yd9
package NetFox; H(F9&6}
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import java.io.*; O*+,KKPt
import java.net.*; yu@u0vlc
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public class FileSplitterFetch extends Thread { 95hdQ<W
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String sURL; //File URL QKtVwsz
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long nStartPos; //File Snippet Start Position :ej`]yK |
long nEndPos; //File Snippet End Position pQ9~^
int nThreadID; //Thread's ID g%T` 6dvT
boolean bDownOver = false; //Downing is over DYaOlT(rE
boolean bStop = false; //Stop identical 'w~e>$WI
FileAccessI fileAccessI = null; //File Access interface 'v'=t<wgl
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException gaxxB]8
{ `*HM5 1U
this.sURL = sURL; <-Q0s%mNj,
this.nStartPos = nStart; OIdoe0JR:O
this.nEndPos = nEnd; wQw
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nThreadID = id;
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fileAccessI = new FileAccessI(sName,nStartPos);//定位 $>!tpJw
} 1i:Q
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public void run() K1[(%<Gp
{ +n&9ZCH
while(nStartPos < nEndPos && !bStop) %6HJM| {H
{ `} :~,E
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try{ &VfMv'%x
URL url = new URL(sURL); pQ yH`
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); njg\y
httpConnection.setRequestProperty("User-Agent","NetFox"); TwLQ;Q
String sProperty = "bytes="+nStartPos+"-";
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httpConnection.setRequestProperty("RANGE",sProperty); d+158qQOh]
Utility.log(sProperty); l
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InputStream input = httpConnection.getInputStream(); 8$C?j\J|*
//logResponseHead(httpConnection); l~*D
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byte[] b = new byte[1024]; $|pD}
int nRead; gzeTBlXg
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) !<W^Fh
{ 2<33BBlWA
nStartPos += fileAccessI.write(b,0,nRead); hz*H,E!>
//if(nThreadID == 1) VAet!H +]
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ^F4h:
} )2mvW1M=7;
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Utility.log("Thread " + nThreadID + " is over!"); ^b@&O-&s
bDownOver = true; wwVg'V;
//nPos = fileAccessI.write (b,0,nRead); j2%?-(U
} 6UnWtLE
catch(Exception e){e.printStackTrace ();} 6h3TU,$r
} L+J)
} ePxwN?
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//打印回应的头信息 do&0m[x%
public void logResponseHead(HttpURLConnection con) =%ZR0cWPoI
{ &