/* @CS%=tE}U
**SiteFileFetch.java ?(Xy 2%v
*/ HHL7z,%f
package NetFox; eyy%2>b
import java.io.*; Jo\karpb
import java.net.*; 8(]q/g"O
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public class SiteFileFetch extends Thread { p2hPLq
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SiteInfoBean siteInfoBean = null; //文件信息Bean Lb~'
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long[] nStartPos; //开始位置 /H$:Q|T}
long[] nEndPos; //结束位置 A&V'WahC@I
FileSplitterFetch[] fileSplitterFetch; //子线程对象 GHQm$|3I
long nFileLength; //文件长度 |<JBoE]3B
boolean bFirst = true; //是否第一次取文件 H#3Ma1z
boolean bStop = false; //停止标志 De\Ocxx
File tmpFile; //文件下载的临时信息 I:M15
DataOutputStream output; //输出到文件的输出流 IeAi '
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) l4YTR4D
public SiteFileFetch(SiteInfoBean bean) throws IOException y>c Yw!
{ y
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siteInfoBean = bean; drJUfsxV
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); usw(]CnH
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); !O4)YM
if(tmpFile.exists ()) ,WE2MAjhT
{ x,c\q$8yH
bFirst = false; bUe6f,8,
read_nPos(); 7
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} _sQhD i
else v7<r-<I[
{ Y?%=6S
nStartPos = new long[bean.getNSplitter()]; *t`=1Ioj
nEndPos = new long[bean.getNSplitter()]; VuuF _y;
} .SDE6nvbW
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} a!HbH
public void run() ITZ}$=
{ 0y%s\,PsT
//获得文件长度 EJ(z]M`f
//分割文件 d!y_N&z|(
//实例FileSplitterFetch {( Ba
//启动FileSplitterFetch线程 e!w#{</8Q
//等待子线程返回 i<!1s%i}
try{ T/tC X[}
if(bFirst) C#.27ah
{ G4%dah 5
nFileLength = getFileSize(); A`V:r2hnb
if(nFileLength == -1) ~n%]u! 6
{ Q
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System.err.println("File Length is not known!"); h5lngw
} #KDN
else if(nFileLength == -2) !Hj
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{ Vg7BK%
System.err.println("File is not access!");
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} |5*:ThC[
else 2
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{ jWK>=|)=c
for(int i=0;i<nStartPos.length;i++) [ub)`-6 u
{ n66b(6"mO2
nStartPos = (long)(i*(nFileLength/nStartPos.length)); UW&K\P
} ~I@ %ysR
for(int i=0;i<nEndPos.length-1;i++) +<)H2
{ gyobq'o-
nEndPos = nStartPos[i+1]; Dk}txw}#
} 5KW
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nEndPos[nEndPos.length-1] = nFileLength; c@$W]o"A
} L"}2Y3
} S^r[%l<'n
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//启动子线程 nbBox,zW
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; y27MG
for(int i=0;i<nStartPos.length;i++) `&J=3x
{ 70Ei<
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), @1V?94T1
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), F
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nStartPos,nEndPos,i); 9Yji34eDZ
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); k"+/DK,:
fileSplitterFetch.start(); ?$=Ml$
} h4c4!S
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 8< z
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); \j0016;
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", nr%P11U\c
nEndPos = " + nFileLength); c22L]Sxo
// fileSplitterFetch[nPos.length-1].start(); FB
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//等待子线程结束 |^O3~!JP(>
//int count = 0; hn e}G._b
//是否结束while循环 JR|P]}
boolean breakWhile = false; l>pnY%(A
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while(!bStop) p%5(Qqmlk
{ .19_EQ>+
write_nPos(); rrl{3
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Utility.sleep(500); D;Y2yc[v
breakWhile = true; sbV_h;<
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for(int i=0;i<nStartPos.length;i++) N._^\FRyn
{ J:\O .F#Fi
if(!fileSplitterFetch.bDownOver) la{o<||Aq
{ lht :%Ts$
breakWhile = false; Gk)6ljL
break; g?>
} Olr'n% }
} KXcE@q9
if(breakWhile) SKVQ !^o
break; Cil1wFBb
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//count++; ;eP.B/N
//if(count>4) nW ]T-!
// siteStop(); ?d)FYB
} ]u%Y8kBe
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System.err.println("文件下载结束!"); 8%;]]{(B
} h[gKyxZ/t
catch(Exception e){e.printStackTrace ();} LP}j0)n
} VB~Do?]*k%
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//获得文件长度 =@.5J'!
public long getFileSize() 2~@Cj@P]
{ df9$k0Fx
int nFileLength = -1; =Ct$!uun
try{ 2XV3f$, H
URL url = new URL(siteInfoBean.getSSiteURL()); |L6 +e*
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); VpB+|%@p
httpConnection.setRequestProperty("User-Agent","NetFox"); *4g:V;L
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int responseCode=httpConnection.getResponseCode(); }Q_ }c9?
if(responseCode>=400) W<H<~wf#
{ #a!qJeWm0
processErrorCode(responseCode); K}Lu1:~
return -2; //-2 represent access is error (E \lLlN
} S~{}jvc
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String sHeader; dhi9=Co;
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for(int i=1;;i++) -aIB_
{ hFDo{yI
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); <2fvEW/#v
//Utility.log(in.readLine()); i$z*~SuM#
sHeader=httpConnection.getHeaderFieldKey(i); O_&Km[
if(sHeader!=null)
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{ S[RVk=A1
if(sHeader.equals("Content-Length")) I>@Qfc
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{ 9S{0vc/2@
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); <is%lx(GDX
break; z5t"o !
} - s0QEQ
} zG~nRt{4
else $ !:xjb
break; Wq*W+7=.
} FMAt6HfU
} qZX\riR
catch(IOException e){e.printStackTrace ();} +qmV|$rmM
catch(Exception e){e.printStackTrace ();} j.UO>1{7
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Utility.log(nFileLength); incUa;
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return nFileLength; $%5!CD1)
} DZV U!J
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//保存下载信息(文件指针位置) >~\CiV4^
private void write_nPos() 7R>Pk9J
{ <_-8)abK
try{ IHj9n>c)[
output = new DataOutputStream(new FileOutputStream(tmpFile)); _E
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output.writeInt(nStartPos.length); 41\V;yib
for(int i=0;i<nStartPos.length;i++) W.
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{ \rmge4`4
// output.writeLong(nPos); >w|2 ~oK
output.writeLong(fileSplitterFetch.nStartPos); r<-@.$lf
output.writeLong(fileSplitterFetch.nEndPos); #l_hiD`;r
} F6-U{+KU$!
output.close(); be~'}`>
} Bc51
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catch(IOException e){e.printStackTrace ();} q%k _C0
catch(Exception e){e.printStackTrace ();} M}`G}*
} t`vIcCXqyl
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//读取保存的下载信息(文件指针位置) LArfX,x3i
private void read_nPos() TS;?>J-
{ [^A>hs*
try{ p`3$NCJN
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); fnudu0k
int nCount = input.readInt(); |%5nV=&\
nStartPos = new long[nCount]; %1e{"_$O9
nEndPos = new long[nCount]; hOIk6}r4X
for(int i=0;i<nStartPos.length;i++) )n1 7}Qm`V
{ "6o5x&H
nStartPos = input.readLong(); C/A~r
nEndPos = input.readLong(); #nJ&`woZt
} "QCVi R
input.close(); w}``2djR'W
} S$Fq1
catch(IOException e){e.printStackTrace ();} ^ot9Q
catch(Exception e){e.printStackTrace ();} Zcxj.F(,
} KZ/2#`
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private void processErrorCode(int nErrorCode) B;xGTl@8
{ XLsOn(U\&
System.err.println("Error Code : " + nErrorCode); doV+u(J~
} Z1M{5E
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//停止文件下载 f2RIOL,
public void siteStop() o:Q.XWa@MG
{ jd?NN:7
bStop = true; Af7&;8pM
for(int i=0;i<nStartPos.length;i++) HU+zzTgI
fileSplitterFetch.splitterStop(); =CjN=FM
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} J9yB'yE8
} ?u_O(eg
//负责部分文件的抓取 Rz!! ;<ye8
**FileSplitterFetch.java ELQc:
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*/ TeWpdUCO
package NetFox; $(eqZ<y
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import java.io.*; UqZ#mK i
import java.net.*; 2x dN0S
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public class FileSplitterFetch extends Thread { ad[oor/7|
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String sURL; //File URL "4e{Cq
long nStartPos; //File Snippet Start Position OFcqouGE
long nEndPos; //File Snippet End Position 6$6Qk !%
int nThreadID; //Thread's ID (w{C*iB
boolean bDownOver = false; //Downing is over +2S#3m?1
boolean bStop = false; //Stop identical TkSeDP
FileAccessI fileAccessI = null; //File Access interface (k&r^V/=
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException A J"/T+g_
{ mY !LGN
this.sURL = sURL; <<.%Gk
this.nStartPos = nStart; 7__?1n~{
this.nEndPos = nEnd; (GI]Uyn
nThreadID = id;
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fileAccessI = new FileAccessI(sName,nStartPos);//定位 g?d*cwtU
} zCdzxb_h"
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public void run() *oU-V#
{ Y]>Qu f.!
while(nStartPos < nEndPos && !bStop) <tp#KZE
{ u.Z,HsEO b
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try{ dw]wQ\4B
URL url = new URL(sURL); l9X\\uG&
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); T&PLvyBL
httpConnection.setRequestProperty("User-Agent","NetFox"); FkJX)
String sProperty = "bytes="+nStartPos+"-"; 1xE*quhrh
httpConnection.setRequestProperty("RANGE",sProperty); =FtJa3mHK
Utility.log(sProperty); K]Onb{QY
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InputStream input = httpConnection.getInputStream(); OGqsQ
//logResponseHead(httpConnection); OlF5~VAbfb
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byte[] b = new byte[1024]; 0[T>UEI?
int nRead; {-?8r>
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) @"E{gM@B
{ >hbT'Or@
nStartPos += fileAccessI.write(b,0,nRead); {#'M3z=
//if(nThreadID == 1) V9Gk``F<RZ
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); a4L0Itrp
} lSk<euCYs
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Utility.log("Thread " + nThreadID + " is over!"); ^#A[cY2eM
bDownOver = true; *b
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//nPos = fileAccessI.write (b,0,nRead); r9d dVD
} t@O4!mFH
catch(Exception e){e.printStackTrace ();} 9M$N>[og
} ko%B`
} $ZOKB9QccC
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//打印回应的头信息 c&JYbq
public void logResponseHead(HttpURLConnection con) U
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{ mC}!;`$8p
for(int i=1;;i++) >7^+ag~&
{ r!7e:p JLO
String header=con.getHeaderFieldKey(i); )QvuoaJQ
if(header!=null) G]- wN7G
//responseHeaders.put(header,httpConnection.getHeaderField(header)); MlM2(/ok
Utility.log(header+" : "+con.getHeaderField(header)); f;"6I
else 4:
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break; :<$IGzw}.
} X&qa3C})
} a|v}L,
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public void splitterStop() fx783
{ k-LT'>CWl
bStop = true; M"t=0[0DM:
} i!=28|_
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} <.h\%&'U
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/* *!gj$GK@%
**FileAccess.java QFfKEMN
*//文件访问(定位,写) 6^DsI
package NetFox; f @cs<x
import java.io.*; _>moza
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public class FileAccessI implements Serializable{ `=0J:
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//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 ;|hEXd?b
RandomAccessFile oSavedFile; B!(t<W8cu
long nPos; PZdYkbj
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public FileAccessI() throws IOException ^!*?vHx:
{ Z-{!Z;T)z
this("",0); (&6C,O~n^.
} /I'n]
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public FileAccessI(String sName,long nPos) throws IOException #f'(8JjY
{ Y"uFlHN&i
oSavedFile = new RandomAccessFile(sName,"rw"); Jb~ -)n2
this.nPos = nPos; E00zf3Jgv'
oSavedFile.seek(nPos); UEq;}4Bo
} Ohm>^N;
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public synchronized int write(byte[] b,int nStart,int nLen) !k&~|_$0@
{ Te8BFcJG
int n = -1; id-VoHdK
try{ Hr$oT=x[
oSavedFile.write(b,nStart,nLen); MGO.dRy_
n = nLen; c#G]3vTdE
} s'^zudx
catch(IOException e) ;!@\|E
{ t#y
e.printStackTrace (); xX'Uq_Jv
} ndm19M8Y|
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return n; {/BEO=8q2
} dv0TJ 0%
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} wS2iyrIB
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/* j8os6I
**SiteInfoBean.java tji,by#E/%
*/ !dLz ?0
package NetFox; mm=Y(G[_%y
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public class SiteInfoBean { O#7ldF(
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private String sSiteURL; //Site's URL e>t9\vN#bx
private String sFilePath; //Saved File's Path N,ik&NIWy
private String sFileName; //Saved File's Name FZ>*<&
private int nSplitter; //Count of Splited Downloading File vc2xAAQ
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