/* Cz?N[dhh
**SiteFileFetch.java B{/Pv0y
*/ UY{
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package NetFox; $1\<>sJH
import java.io.*; \p@,+ -gX
import java.net.*; ahS*YeS7
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public class SiteFileFetch extends Thread { X'jEI{1w
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SiteInfoBean siteInfoBean = null; //文件信息Bean [CRy>hfV
long[] nStartPos; //开始位置 >}u?{_s *0
long[] nEndPos; //结束位置 ,A
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FileSplitterFetch[] fileSplitterFetch; //子线程对象 b\gl9"X
long nFileLength; //文件长度 '|4/aHU
boolean bFirst = true; //是否第一次取文件 ;b
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boolean bStop = false; //停止标志 XOgX0cRC4
File tmpFile; //文件下载的临时信息 +5?hkQCX1^
DataOutputStream output; //输出到文件的输出流 D}cq_|mmn[
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) m]N4.J
public SiteFileFetch(SiteInfoBean bean) throws IOException 9qQ_#$Vv
{ t wtGkkC
siteInfoBean = bean; f5wOk&G
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 1uMnlimr
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); #B`"B
if(tmpFile.exists ()) ?*,N
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{ q'+XTal
bFirst = false; vxr3|2`
read_nPos(); k%NY,(:(
} -hp,O?PM
else 8,dCx}X
{ M29[\@zL
nStartPos = new long[bean.getNSplitter()]; 1.yw\ZC\
nEndPos = new long[bean.getNSplitter()]; $hn_4$
}
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} N;-+)=M,rf
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public void run() ,O3"r;
{ A_Sl#e
//获得文件长度 9<[RXY
//分割文件 }#EiL
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//实例FileSplitterFetch c4L5"_#`x-
//启动FileSplitterFetch线程 RS<c&{?
//等待子线程返回 y"$|?187x
try{ `x6 i5mp
if(bFirst) a2Q9tt>Q
{ '9<Mk-Aj
nFileLength = getFileSize(); Ez<J+#)t
if(nFileLength == -1) }6C&N8f
{ tPC8/ntP8
System.err.println("File Length is not known!"); .__X[Mzth3
} b*dRNu
else if(nFileLength == -2) 1ZhJ?PI,9{
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System.err.println("File is not access!"); A{5k}
} Ha)w*1&w"
else kX[I|Z=
{ /kx:BoV
for(int i=0;i<nStartPos.length;i++) HEjV7g0E
{ D\j1`
nStartPos = (long)(i*(nFileLength/nStartPos.length)); dHf_&X2A
} rS(693kb
for(int i=0;i<nEndPos.length-1;i++)
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{ `j4ukOnG
nEndPos = nStartPos[i+1]; C&<f YCwG
} i1 SP
nEndPos[nEndPos.length-1] = nFileLength; ?$-OdABXHK
} u4z]6?,"e
} HOykmx6$
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//启动子线程 G-M!I`P
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; {l *ps-fi
for(int i=0;i<nStartPos.length;i++) ^>g+:?x
{ y<)Lr}gP
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), K Qub%`n
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), a5Xr"-
nStartPos,nEndPos,i); &z1r$X.AW
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); !c(B^E
fileSplitterFetch.start(); 7:M%w'oR
} bhe|q`1,E
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), I \vu?$w
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 6G@_!i*2F
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", "-ZuH
nEndPos = " + nFileLength); v`y{l>r,
// fileSplitterFetch[nPos.length-1].start(); l4;/[Q>Z
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//等待子线程结束 'f;+*~*L
//int count = 0; wF@qBDxg
//是否结束while循环 x0Tb7y`
boolean breakWhile = false; iKp4@6an
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while(!bStop) $D9JsUij
{ F P
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write_nPos(); 20% xD e
Utility.sleep(500); Gtg;6&2
breakWhile = true; er l_Gg
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for(int i=0;i<nStartPos.length;i++) \zj8| +
{ TO( =4;U
if(!fileSplitterFetch.bDownOver) qMI%=@=
{ J#:%| F%
breakWhile = false; x:sTE u@
break; z${B|
} .]v8W51Y
} lpSM p
if(breakWhile) <FGNV+?%e
break; +Icg;m{
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//count++; @#8F5G#
//if(count>4) =H!u4
// siteStop(); LAMTf"a
} }p8a'3@Z
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System.err.println("文件下载结束!"); *QAK9mc
} Z[0xqGYLB
catch(Exception e){e.printStackTrace ();} evimnV
} mKxQU0 `
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//获得文件长度 O$#`he/jm
public long getFileSize() ajkRL|^
{ ~5cLI;4h
int nFileLength = -1; =C<_rBY
try{ tgg*6lc
URL url = new URL(siteInfoBean.getSSiteURL()); {:{NK%
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); AO8`ItNZdT
httpConnection.setRequestProperty("User-Agent","NetFox"); JRU)AMMU&
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int responseCode=httpConnection.getResponseCode(); 61!R-
if(responseCode>=400) G.T}^xHmL
{ 0%'&s)#
processErrorCode(responseCode); A5?[j
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return -2; //-2 represent access is error nW{7L
} GW`9SB
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String sHeader; \J9@p
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for(int i=1;;i++) SBeb}LZ
{ 8LR_K]\
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Qy@chN{eP
//Utility.log(in.readLine()); AX]lMe
sHeader=httpConnection.getHeaderFieldKey(i); wm8(Ju
if(sHeader!=null) ~p8-#A)X,)
{ +XFF@h&=t
if(sHeader.equals("Content-Length")) &IOChQ`8P
{ :[\}Hn=
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 7CM<"pV
break; Q> @0'y=s
} Et`z7Q*e
} }@a_x,O/x}
else in#g
break; =3/||b4c
} *PZN Z{|m
} ` [@
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catch(IOException e){e.printStackTrace ();} ur*1I/v
catch(Exception e){e.printStackTrace ();} d;;]+%
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Utility.log(nFileLength); $Wb"X=}tl
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return nFileLength; IY,&/MCh
} KcNEB_i
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//保存下载信息(文件指针位置) s?E7tmaM
private void write_nPos() !cp
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{ -br/
try{ e[w)U{|40
output = new DataOutputStream(new FileOutputStream(tmpFile)); ]#R;%L
output.writeInt(nStartPos.length); 'iUfr@
for(int i=0;i<nStartPos.length;i++) ,Iwri\
{
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// output.writeLong(nPos); VEo>uR
output.writeLong(fileSplitterFetch.nStartPos); jIAl7aoY
output.writeLong(fileSplitterFetch.nEndPos); ZqS'xN:k
} s{`r$:!
output.close(); 2-]gHAw%
} 8cR4@Hqx
catch(IOException e){e.printStackTrace ();} 0=L:8&m
catch(Exception e){e.printStackTrace ();} l"b78n
} IqcPml{\
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//读取保存的下载信息(文件指针位置) a|TP 2m
private void read_nPos() A&F@+X6@
{ +anNpy
try{ I)Lg=n$
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 9[6xo!
int nCount = input.readInt(); i&{8a3B
nStartPos = new long[nCount]; *sZOws<
nEndPos = new long[nCount]; Ok2k;
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for(int i=0;i<nStartPos.length;i++) mcp}F|ws
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nStartPos = input.readLong(); <iJ->$
nEndPos = input.readLong(); 6-QTqb?U;N
} 1th|n
input.close(); >Y)jt*vQ
} FU5vo
catch(IOException e){e.printStackTrace ();} mi%d([)%<
catch(Exception e){e.printStackTrace ();} YNHn# 98\
} &Q(Q/]U~
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private void processErrorCode(int nErrorCode) )uZ<?bkQ
{ T3%yV*F,
System.err.println("Error Code : " + nErrorCode); ?Z*LTsPr
} 2syKYHV
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//停止文件下载 o&fAnpia=
public void siteStop() 76mQ$ze
{ ^e<0-uM"s
bStop = true; WLv( K_3Y
for(int i=0;i<nStartPos.length;i++) byyz\>yAVq
fileSplitterFetch.splitterStop(); FyQ
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} +cQ4u4
} "xdXHuX
//负责部分文件的抓取 >77
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**FileSplitterFetch.java [[oX$0Fp\!
*/ WTSY:kvcCY
package NetFox; G@
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import java.io.*; tJ bOn$]2"
import java.net.*; .kBi" p&
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public class FileSplitterFetch extends Thread { l4|bpR Cp
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String sURL; //File URL dkLc"$(O
long nStartPos; //File Snippet Start Position *N[.']#n
long nEndPos; //File Snippet End Position \,ir]e,1
int nThreadID; //Thread's ID Y>wpla[kUq
boolean bDownOver = false; //Downing is over o5i?|HJ
boolean bStop = false; //Stop identical ShF
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FileAccessI fileAccessI = null; //File Access interface vA;ml$
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 8/ZJkI
{ LN" bGe
this.sURL = sURL; Bx j6/a7Xd
this.nStartPos = nStart; oT5?*3f
this.nEndPos = nEnd; aq0J }4U
nThreadID = id; )}]<o
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fileAccessI = new FileAccessI(sName,nStartPos);//定位 no)Spo'
} c{V0]A9VF
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public void run() ()}O|JL:K
{ xJJlV P
while(nStartPos < nEndPos && !bStop) y? )v-YGu
{ mQ('X~l
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try{ )PB&w%J
URL url = new URL(sURL); {KdC51"Nv
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); QE=Cum
httpConnection.setRequestProperty("User-Agent","NetFox"); *{)[:;
String sProperty = "bytes="+nStartPos+"-"; !|}J{
httpConnection.setRequestProperty("RANGE",sProperty); A5F< <
Utility.log(sProperty); lWd)(9Kj
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InputStream input = httpConnection.getInputStream(); L7wl3zG
//logResponseHead(httpConnection); =LZj6'
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byte[] b = new byte[1024]; 0A9x9l9Wd
int nRead; "n7rbh3VW
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) xAjLn*d|N
{ vObP(@0AM
nStartPos += fileAccessI.write(b,0,nRead); ^qIp+[/'
//if(nThreadID == 1) Op~sR ^ez
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); x,5$VLs\+
} o3]B/
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