/* 7NQEn Al
**SiteFileFetch.java 9<1dps=c
*/ !,JV<(7k
package NetFox; HV8=b"D"
import java.io.*; AP/#?
import java.net.*; PI$K+}E
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public class SiteFileFetch extends Thread { 8QFg6#"O
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SiteInfoBean siteInfoBean = null; //文件信息Bean %"BJW
long[] nStartPos; //开始位置 QJtO~~-
long[] nEndPos; //结束位置 'Em633
FileSplitterFetch[] fileSplitterFetch; //子线程对象 =r>u'wRQ
long nFileLength; //文件长度 D[p`1$E-1v
boolean bFirst = true; //是否第一次取文件 Isg\ fSK<j
boolean bStop = false; //停止标志 ]YKxJ''u
File tmpFile; //文件下载的临时信息 FZ=xy[q]~
DataOutputStream output; //输出到文件的输出流 `E8D5'tt
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) #9p|aS\
public SiteFileFetch(SiteInfoBean bean) throws IOException `]wk)50BVp
{ b_a6|
siteInfoBean = bean; F%G} >xn
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ^.@F1k
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); kJ.0|l0
if(tmpFile.exists ()) ?dAy_|
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{ EEj.Kch}4
bFirst = false; sc$I,|d2
read_nPos(); )H[Pz.'ah0
} ?CE&F<?#@
else *apkw5B}C
{ CK(`]-q>,
nStartPos = new long[bean.getNSplitter()]; U,7}VdO
nEndPos = new long[bean.getNSplitter()]; jUd)|v+t
} QEc4l[^{.B
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} n|eM}ymF+
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public void run() V3q[$~9
{ tYMPqP,1.
//获得文件长度 1}3tpO;
//分割文件 `{9bf)vP6
//实例FileSplitterFetch gvoYyO#cm
//启动FileSplitterFetch线程 `zsooA
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//等待子线程返回 eR:C?v
try{ sI6coe5n
if(bFirst) y1 a1UiHGP
{ YpEH(tq
nFileLength = getFileSize(); ##a.=gl
if(nFileLength == -1) 1;eWnb(
{ J(w 3A)(
System.err.println("File Length is not known!"); :r9<wbr)k0
} V{n7KhN~Y!
else if(nFileLength == -2) D4$2'h
{ /o9
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System.err.println("File is not access!"); [Z;ei1l
} O9_SVXWVw
else #O^%u,mJj
{ t:*1*;
for(int i=0;i<nStartPos.length;i++) L"}tJM.d
{ H7(D8.y )
nStartPos = (long)(i*(nFileLength/nStartPos.length)); .:~E.b
} z"f+;1
for(int i=0;i<nEndPos.length-1;i++) [I`:%y
{ -9(pOwN
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nEndPos = nStartPos[i+1]; kbZpi`w
} ]Wtg.y6;
nEndPos[nEndPos.length-1] = nFileLength; I %|;M%B
} lESv
} ^o4](l
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//启动子线程 u9N/9
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; }!V-FAL
for(int i=0;i<nStartPos.length;i++) UHR%0ae
{ kO4'|<
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Y-lTPR<Eq
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), G%viWWTY
nStartPos,nEndPos,i); (@V_47o
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); b*1yvkX5
fileSplitterFetch.start(); UT0}Ce>e
} GI6]Ecc
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Ako]34Rl,
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); IYv.~IQO
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", CV)K=Br5&_
nEndPos = " + nFileLength); a9NIK/9
// fileSplitterFetch[nPos.length-1].start(); "EwzuM8f
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//等待子线程结束 D~ n-;T
//int count = 0; d .%2QkL
//是否结束while循环 Yz#E0aTTA
boolean breakWhile = false; _ Y7Um
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while(!bStop) wV-9T*QrM
{ <!F".9c@A
write_nPos(); #n]K$k>
Utility.sleep(500); oxL)Jx\c9A
breakWhile = true; TjHt:%7.
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for(int i=0;i<nStartPos.length;i++) 6q^\pJY%&7
{ -kHJH><j
if(!fileSplitterFetch.bDownOver) _=}.Sg5Q
{ xjD."q
breakWhile = false; Q]e]\J
break; \>||
} 2_}oOt?qiM
} 3)I]bui
if(breakWhile) @saK:z
break; 29cx(
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//count++; 'x5p ?m
//if(count>4) *W;;L_V"
// siteStop(); sf/m@425
} TbLU[(m-n
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System.err.println("文件下载结束!"); <KfR)7I$0a
} L/In~'*-
catch(Exception e){e.printStackTrace ();} W]XM<# ^^
} 2_ 1RJ
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//获得文件长度 q" EW*k+
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public long getFileSize() e N v\ZR1
{ n.t5:SW
int nFileLength = -1; ;M~9Yr=1
try{ Y>atJ
URL url = new URL(siteInfoBean.getSSiteURL());
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 6lT< l zT
httpConnection.setRequestProperty("User-Agent","NetFox"); maeQ'Sv_&
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int responseCode=httpConnection.getResponseCode(); c91^7@Xv
if(responseCode>=400) :,fT^izew
{ Zu2`IzrG#
processErrorCode(responseCode); JY@bD:
return -2; //-2 represent access is error MV2$0
} \Zh&[D!2
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String sHeader; R !yh0y}Z
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for(int i=1;;i++) Pm%5c\ef
{ P(DEf(
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ![$`Ivro`
//Utility.log(in.readLine()); [+QyKyhTO
sHeader=httpConnection.getHeaderFieldKey(i); QO0@Ax\b
if(sHeader!=null) <-fvYer
{ BMI`YGjY1
if(sHeader.equals("Content-Length")) Ghc
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{ %?, 7!|Ls
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ZjY,k
break; ^$}O?y7O
} -2!S>P Zs
} :J_UXtx
else Vr Lp5?Bh
break; zA}JVB
} Z6rZAwy
} 1zCu1'Wv
catch(IOException e){e.printStackTrace ();} Wp+lI1t
catch(Exception e){e.printStackTrace ();} I?E+
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Utility.log(nFileLength); x2a
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return nFileLength; $_;rqTk]g
} qA\&%n^j]
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//保存下载信息(文件指针位置) ah
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private void write_nPos() kZo#Ny
{ xQU//kNL
try{ H }]Zp
output = new DataOutputStream(new FileOutputStream(tmpFile)); H C,5j)1
output.writeInt(nStartPos.length); d}tmZ*q
for(int i=0;i<nStartPos.length;i++) 4n@>gW
{ bCr
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// output.writeLong(nPos); )P? F ni}
output.writeLong(fileSplitterFetch.nStartPos); QV.>Cy
output.writeLong(fileSplitterFetch.nEndPos); %rJDpB{
} <bo^u w
output.close(); n#Dy
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} J[r_ag
catch(IOException e){e.printStackTrace ();} l)o!&]2
catch(Exception e){e.printStackTrace ();} (gPB@hAv
} B~k{f}
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//读取保存的下载信息(文件指针位置) $GU s\
private void read_nPos() ("PZ!z1m1
{ 9M'"q7Kh
try{ 1Az&BZU[
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); qTRP2rH,L&
int nCount = input.readInt(); h.]^ o*DJ
nStartPos = new long[nCount]; SmD#hE[
nEndPos = new long[nCount]; u{&=$[;
for(int i=0;i<nStartPos.length;i++) 7P}l^WX
{ }~=<7|N.
nStartPos = input.readLong(); @%2crJnkS
nEndPos = input.readLong();
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} @BjB
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input.close(); WRkuPj2
} W( sit;O
catch(IOException e){e.printStackTrace ();} BeQ'\#q,
catch(Exception e){e.printStackTrace ();} Ix,b -C~
} N0}[&rE 8
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private void processErrorCode(int nErrorCode) f/Y7@y
{ tDah@_
System.err.println("Error Code : " + nErrorCode); `>g\gaQ
} 3BGcDyYE
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//停止文件下载 M,p0wsj;
public void siteStop() E#Ue9J
{ 1|-C(UW>
bStop = true; fKFD>u0%
for(int i=0;i<nStartPos.length;i++) 17c`c.yP
fileSplitterFetch.splitterStop(); 0YL*)=pD,
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} .@+M6K*
} z1,#ma}.
//负责部分文件的抓取 m(:R (K(je
**FileSplitterFetch.java S1)g\Lv
*/ ~N| aCi-X
package NetFox; bA Yp }
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import java.io.*; |x1Ttr,
import java.net.*; R+He6c!?9
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public class FileSplitterFetch extends Thread { >
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String sURL; //File URL
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long nStartPos; //File Snippet Start Position z;@<J8I
long nEndPos; //File Snippet End Position s0vcGh#w
int nThreadID; //Thread's ID ]
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boolean bDownOver = false; //Downing is over QD^= ;!
boolean bStop = false; //Stop identical pX3E l$p
FileAccessI fileAccessI = null; //File Access interface g0a!auWM
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException NcwUK\
{ "30=!k
this.sURL = sURL; [:e>FXV
this.nStartPos = nStart; !@Vj&>mH$
this.nEndPos = nEnd; `WC4:8
nThreadID = id; S\sy^Kt~4:
fileAccessI = new FileAccessI(sName,nStartPos);//定位 y|*4XF<b
} H3d|eO4+W
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public void run() <?8cVLW}O
{ d/3&3>/
while(nStartPos < nEndPos && !bStop) wod{C !
{ ~
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try{ #3?"#),q
URL url = new URL(sURL); cw~GH
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); l,A\]QDvl
httpConnection.setRequestProperty("User-Agent","NetFox"); e*(
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String sProperty = "bytes="+nStartPos+"-"; =8p[ (<F=
httpConnection.setRequestProperty("RANGE",sProperty); "Ya;&F.'
Utility.log(sProperty); rc%*g3ryLG
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InputStream input = httpConnection.getInputStream(); uF|[MWcy0#
//logResponseHead(httpConnection); +U<Ae^V
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byte[] b = new byte[1024]; sZqi)lo-s
int nRead; >2mY%
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) aOoWB^;6
{ 6w{""K.{
nStartPos += fileAccessI.write(b,0,nRead); cY~lDLyB
//if(nThreadID == 1) uSCI
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); r[j@@[)"
} Cd p_niF
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Utility.log("Thread " + nThreadID + " is over!"); GWj !n
bDownOver = true; p<@+0Uw2
//nPos = fileAccessI.write (b,0,nRead); GBd
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} &w%%^ +n
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catch(Exception e){e.printStackTrace ();} a,M/i&.e`
} )In;nc
} G
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//打印回应的头信息 e<Oz%
public void logResponseHead(HttpURLConnection con) kwt;pxp i
{ ?0s&Kz4B
for(int i=1;;i++) SnO,-Rg
{ Qej<(:J5
String header=con.getHeaderFieldKey(i); uA%F0oM
if(header!=null) Gn10)Uf8X
//responseHeaders.put(header,httpConnection.getHeaderField(header)); A#79$[>w
Utility.log(header+" : "+con.getHeaderField(header)); SS,'mv
else aMJ9U)wnK
break; @(tuE
} <("P5@cExU
} 3URrK[%x`
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public void splitterStop() ,}Ic($To
{ AlgVsE%Va
bStop = true; VD=F{|^
} Y:'c<k
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} P(zquKm
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/* _Nbh Wv
**FileAccess.java V3\}]5
*//文件访问(定位,写) FC8=
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package NetFox; A)^A2xZQ
import java.io.*; ?[O Sy.6
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public class FileAccessI implements Serializable{ Yg`z4U'6~
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