/* {\%I;2X
**SiteFileFetch.java m8b,_1
*/ .(.<
package NetFox; !|i #g$
import java.io.*; z F.@rXl
import java.net.*; {GLGDEb
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public class SiteFileFetch extends Thread { m,!SDCq
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SiteInfoBean siteInfoBean = null; //文件信息Bean ?6&8-zt1?
long[] nStartPos; //开始位置 F]UH\1
long[] nEndPos; //结束位置 :S_]!'H
FileSplitterFetch[] fileSplitterFetch; //子线程对象 &JqaIJh
long nFileLength; //文件长度 O>1Cx4s5
boolean bFirst = true; //是否第一次取文件 J-,ocO
boolean bStop = false; //停止标志 3^~J;U!3
File tmpFile; //文件下载的临时信息 \#t)B
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DataOutputStream output; //输出到文件的输出流 X(MS!R V
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ],S {?!'1
public SiteFileFetch(SiteInfoBean bean) throws IOException 9jqsEd-SW
{ @v2ko5
siteInfoBean = bean; A$5M.
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); FA$32*v
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); rf:H$\yw
if(tmpFile.exists ()) HOFxOBV
{ kDWEgnXK,v
bFirst = false; 7#%Pry
read_nPos(); ,&WwADZ-s
} =urGs`\
else 4}v|^_x-i
{ ;-kDJi
nStartPos = new long[bean.getNSplitter()]; BR@m*JGajz
nEndPos = new long[bean.getNSplitter()]; uHSnZ"#
} qx[c0X!
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} 3dj|jw5
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public void run() 9yC22C:
{ tOLcnWt
//获得文件长度 ~vt9?(h
//分割文件 Q]/%Y[%|
//实例FileSplitterFetch n*=#jL
//启动FileSplitterFetch线程 p\ ;|Z+0=
//等待子线程返回 M\5|
try{ qE8aX*A1/
if(bFirst) #xw*;hW<
{ !h7.xl OpN
nFileLength = getFileSize(); iP"sw0V8
if(nFileLength == -1) +|,4g_(j
{ XgHJ Oqt
System.err.println("File Length is not known!"); -"dt3$ju
} e@ZM&iR
else if(nFileLength == -2) ; s/<wx-C
{ 4$pV;xV
System.err.println("File is not access!"); +)"Rv%.
} U\tx{CsSz
else l9&k!kF`
{ {XmCG%%L
for(int i=0;i<nStartPos.length;i++) 4F6aPo2
{ tj[E!
nStartPos = (long)(i*(nFileLength/nStartPos.length)); &~H ed_
} !EhKg)y=
for(int i=0;i<nEndPos.length-1;i++) 3wq<@dRv4
{ -m%`Di!E
nEndPos = nStartPos[i+1]; `z0q:ME
} /GC&@y0yi
nEndPos[nEndPos.length-1] = nFileLength; 8$
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} h7UNmwj
} ~EPVu
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//启动子线程 1d<Uwb>
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; aY>v
for(int i=0;i<nStartPos.length;i++) R;c9)>8L
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), g=56|G7n
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 96(Mu% l
nStartPos,nEndPos,i); \H@1VgmR;
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); c_D(%Vf5
fileSplitterFetch.start(); _b~{/[s
} aLGq<6Ja
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Lr$Mk#'B
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); {4G/HW28
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ",
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nEndPos = " + nFileLength); VIP7j(#t_g
// fileSplitterFetch[nPos.length-1].start(); =\WF +r]V
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//等待子线程结束 !B}9gT
//int count = 0; 3uqhYT;
//是否结束while循环 Ww2@!ng
boolean breakWhile = false; _xp8*2~-
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while(!bStop) rm,`M
{ W8^m-B&
write_nPos(); WR"D7{>tw
Utility.sleep(500); YOD.y!.zq7
breakWhile = true; TQF+aP8[L
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for(int i=0;i<nStartPos.length;i++) x?+w8jSR
{ :x*)o+
if(!fileSplitterFetch.bDownOver) T`ibulp
{ "0P`=n
breakWhile = false; 20|`jxp
break; \xkKgI/
} &Vz$0{d5
} 3S:Lce'f
if(breakWhile) :hX[8u
break; qq| 5[I.?
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//count++; fORkH^Y(&
//if(count>4) K
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// siteStop(); ,_Z(!|
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} /uwi$~Ed
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System.err.println("文件下载结束!"); XVYFyza;
} @Nek;xJ
catch(Exception e){e.printStackTrace ();} W&?Qs=@
} <OMwi9
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//获得文件长度 *9aJZWf>V
public long getFileSize() WEimJrAn
{ ^Co$X+
int nFileLength = -1; z~
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try{ N T`S)P*?
URL url = new URL(siteInfoBean.getSSiteURL()); 1`&`y%c?B
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); h xO}'`:
httpConnection.setRequestProperty("User-Agent","NetFox"); bO=|utpk
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int responseCode=httpConnection.getResponseCode(); `@/)S^jBau
if(responseCode>=400) m+TAaK
{ 'r?ULft1
processErrorCode(responseCode); ~zqb{o^pT
return -2; //-2 represent access is error /,Xl8<~#
} Hc)z:x;Sj
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String sHeader; HC%Hbc~S_Q
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for(int i=1;;i++) 'a['lF
{ 5?kfE
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ?h= n5}Y
//Utility.log(in.readLine()); {>f"&I<xw
sHeader=httpConnection.getHeaderFieldKey(i); 1@F-t94I
if(sHeader!=null) ju"z
{ uzy5rA==
if(sHeader.equals("Content-Length")) 9P?0D
{ pM?;QG;jA
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); JE?rp1.
break; 3e_tT8
} /Nf{;G!kg
} ;w7 mr1
else y6XOq>
break; 8>&@"j
} #S}orWj
} va6Fp2n<1*
catch(IOException e){e.printStackTrace ();} .uuhoqG0
catch(Exception e){e.printStackTrace ();} >t+U`6xK
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Utility.log(nFileLength); S
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return nFileLength; aSzI5J]/=
} `q^#u
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//保存下载信息(文件指针位置) l4bytI{63
private void write_nPos() ig,.>'+l
{ :<QknU}dwy
try{ d*@T30
output = new DataOutputStream(new FileOutputStream(tmpFile)); e97G]XLR
output.writeInt(nStartPos.length); <xI<^r'C9e
for(int i=0;i<nStartPos.length;i++) X?5{2ulrI
{ Hn|W3U
// output.writeLong(nPos); )4yP(6|lx
output.writeLong(fileSplitterFetch.nStartPos); 8dGsV5" *
output.writeLong(fileSplitterFetch.nEndPos); BI1M(d#1L"
} ,>;21\D
output.close(); aZFpt/.d
} $DbnPZ2$
catch(IOException e){e.printStackTrace ();} 17LhgZs&
catch(Exception e){e.printStackTrace ();} W0qR?jc
} rq+_[!
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//读取保存的下载信息(文件指针位置) nBh+UT}
private void read_nPos() 2Ez<Iw
{ E9:@H;Gc
try{ #[+# bw_6
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ]I?.1X5d0
int nCount = input.readInt(); uO%0rKW
nStartPos = new long[nCount]; 2|nm> 4
nEndPos = new long[nCount]; @N=vmtLP
for(int i=0;i<nStartPos.length;i++) hFrMOc&
{ OM86C
nStartPos = input.readLong();
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nEndPos = input.readLong(); 9]4Q@%
} sPH2KwEv
input.close(); XkaREE
} J<$@X JLS
catch(IOException e){e.printStackTrace ();} ARH~dN* C
catch(Exception e){e.printStackTrace ();} akj<*,
} a=z] tTs4
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private void processErrorCode(int nErrorCode) TZn
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{ %w`d
System.err.println("Error Code : " + nErrorCode); m'o dVZ7
} ^_2c\mw_I
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//停止文件下载 /9`4f "
public void siteStop() u47<J?!Q
{ HIg2y
bStop = true; '7iz5wC#
for(int i=0;i<nStartPos.length;i++) ~Amq1KU*Z
fileSplitterFetch.splitterStop(); BoD{fg
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} j*{0<hZb}
} !~ox;I}S
//负责部分文件的抓取 >3 o4 U2
**FileSplitterFetch.java 6(n0{A
*/ djd/QAfSC
package NetFox; )U/jD
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import java.io.*; o! a,r3
import java.net.*; =sJ?]U
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public class FileSplitterFetch extends Thread { &g`IRz
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String sURL; //File URL 0vY_
long nStartPos; //File Snippet Start Position (3Db}Hnn
long nEndPos; //File Snippet End Position I2[U #4n
int nThreadID; //Thread's ID '&IGdB I
boolean bDownOver = false; //Downing is over I"Oq< _
boolean bStop = false; //Stop identical oPe|Gfv\G
FileAccessI fileAccessI = null; //File Access interface x#1Fi$.
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException X9x`i
{ W06aj ~7Z
this.sURL = sURL; ?cU,%<r
this.nStartPos = nStart; |]\zlH"w
this.nEndPos = nEnd; 9&+]YYCS-
nThreadID = id; K<S3gb?0
fileAccessI = new FileAccessI(sName,nStartPos);//定位 n`Q@<op
} K;F1'5+=D
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public void run() SUS=sR/N
{ fG0 ?"x@>
while(nStartPos < nEndPos && !bStop) gZ @+62
{ RGW@@
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try{ c(Q@5@1y:
URL url = new URL(sURL); dC C*|b8h
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); I}C2;[a B
httpConnection.setRequestProperty("User-Agent","NetFox"); v$ ti=uk$
String sProperty = "bytes="+nStartPos+"-"; m2]N%Y
httpConnection.setRequestProperty("RANGE",sProperty); o[Iu9.zJpy
Utility.log(sProperty); f{BF%;
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InputStream input = httpConnection.getInputStream(); \xYVnjG,
//logResponseHead(httpConnection); 4Aj~mA
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byte[] b = new byte[1024]; k^5Lv#Z
int nRead; J1w;m/oV
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) /\mtCa.O
{ zv]ZEWVzc
nStartPos += fileAccessI.write(b,0,nRead); A3]A5s6
//if(nThreadID == 1) <PLAAh8
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Xu$>$D#a
} wZvv5:jKpu
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Utility.log("Thread " + nThreadID + " is over!"); PK|-2R"M
bDownOver = true; 35\ |#2qw6
//nPos = fileAccessI.write (b,0,nRead); W+h2 rv
} <-VBb[M#
catch(Exception e){e.printStackTrace ();} s.J4&2Q
} c^}y9% 4c
} 80lei
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//打印回应的头信息 "O34 E?ql.
public void logResponseHead(HttpURLConnection con) \|=6<ZY:
{ oe<i\uX8z
for(int i=1;;i++) u\\t~<8
{ Hw \of
String header=con.getHeaderFieldKey(i); $/wm k7T
if(header!=null) e]4$H.dP
//responseHeaders.put(header,httpConnection.getHeaderField(header)); 2<D| {
Utility.log(header+" : "+con.getHeaderField(header)); ! M^O\C)
else Tmzbh 9
break; IuwE&#
} !"^Zr]Qt+\
} vJWBr:`L
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