/* u=9)A9
**SiteFileFetch.java %9P)Okq
*/ ( R0>0f@
package NetFox; O]N
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import java.io.*; ~Y /55uC
import java.net.*; Vs~!\<?
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public class SiteFileFetch extends Thread { Bq) aA)gF
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SiteInfoBean siteInfoBean = null; //文件信息Bean s0bWg$
long[] nStartPos; //开始位置 yqKERdm
long[] nEndPos; //结束位置 +ZxG<1&
FileSplitterFetch[] fileSplitterFetch; //子线程对象 AB1,G|L
long nFileLength; //文件长度 1} h''p
boolean bFirst = true; //是否第一次取文件 XI*cu\7sy
boolean bStop = false; //停止标志 1L:sck5k
File tmpFile; //文件下载的临时信息 +Xjevg6DU
DataOutputStream output; //输出到文件的输出流 gjnTG:}}}+
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) T($6L7 j9
public SiteFileFetch(SiteInfoBean bean) throws IOException N&'05uWY}
{ M,j3 z#
siteInfoBean = bean; U*7Yi-"/*
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); K
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tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Z UCz-53
if(tmpFile.exists ()) +~L26T\8
{ 69>N xr~k
bFirst = false;
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read_nPos(); 84uHK)h<%
} 7TW</g(
else 3(/J(8
{ gkN
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nStartPos = new long[bean.getNSplitter()]; 5$C]$o}
nEndPos = new long[bean.getNSplitter()]; M7 Z9(3Va
} 07:N)y,
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} 1__Mf.A
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public void run() GDUOUl&
{ KqH_?r`
//获得文件长度 t@1bu$y
//分割文件 !04zWYHo
//实例FileSplitterFetch !<P|:Oo*Dl
//启动FileSplitterFetch线程 E6FT*}Q
//等待子线程返回
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try{ ejuw+@ _
if(bFirst) = g[Cs*
{ bEz1@"~
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nFileLength = getFileSize(); c7fQ{"f 3B
if(nFileLength == -1) <.lT.>'?
{ <#r/4a"V
System.err.println("File Length is not known!"); [V-OYjPAx
} {zf)im[.
else if(nFileLength == -2) |{G GATni
{ YrWC\HR_
System.err.println("File is not access!"); mm,be.
} It
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else `43X? yQ
{ YLEa;MR
for(int i=0;i<nStartPos.length;i++) HI}9"(t}
{ |VPJaiC~
nStartPos = (long)(i*(nFileLength/nStartPos.length)); vS$_H<;P
} Mx<?c
for(int i=0;i<nEndPos.length-1;i++) KS6H`Mm}/
{ UD@u hL
nEndPos = nStartPos[i+1]; c+^#(OB
} _CDl9pP36#
nEndPos[nEndPos.length-1] = nFileLength; @Pt,N
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} =oPc\VYW
} IV5B5Q'D
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//启动子线程 1 ynjDin<
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; T1&^IO-F7$
for(int i=0;i<nStartPos.length;i++) 3Wl,T5}{
{ ]$VYzE2e
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), uuA
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), :172I1|7
nStartPos,nEndPos,i); UJWkG^?
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 8.'[>VzBL
fileSplitterFetch.start(); q|23l1PI
} 1JIo,7
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Z.]=u(=a
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1);
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// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", aj71oki)
nEndPos = " + nFileLength); GWU"zWli]z
// fileSplitterFetch[nPos.length-1].start(); ^^-uq)A
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//等待子线程结束 CfWtCA
//int count = 0; ~baVS-v
//是否结束while循环 mimJ_=]DC
boolean breakWhile = false; BV8-\R@
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while(!bStop) lhk[U!>#
{ 4%3R}-'mh
write_nPos(); S-8wL%r
Utility.sleep(500); 2KUm(B.I
breakWhile = true; RKY~[IQ,
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for(int i=0;i<nStartPos.length;i++) Y}/e"mp
{ mF?GQls`
if(!fileSplitterFetch.bDownOver) Y)-)owx7
{ ?)ROQ1-#@
breakWhile = false; g@<E0
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break; bHi0N@W!vG
} 9<9 c^2
} i"h '^6M1
if(breakWhile) y$]gmg
break; I4%p?'i,C
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//count++; |9;6Cp
//if(count>4) G9/5KW}-
// siteStop(); /-.i=o]b
} PyS~2)=B
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System.err.println("文件下载结束!"); cNX0.7Ls
} 33{(IzL0
catch(Exception e){e.printStackTrace ();} d=TZaVL$$
} x
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//获得文件长度 cPemrNxydN
public long getFileSize() ;}tEU'&
{ *6-f vqCv
int nFileLength = -1; Zewx*Y|
try{ g `)5g5
URL url = new URL(siteInfoBean.getSSiteURL()); lE8M.ho\
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Vu%XoI)<KY
httpConnection.setRequestProperty("User-Agent","NetFox"); vBMuV pzO
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int responseCode=httpConnection.getResponseCode(); *q ?-M"K
if(responseCode>=400) f?ImQYqP
{ nZfU:N
processErrorCode(responseCode); =
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return -2; //-2 represent access is error ]y4(WG;:
} Bc/'LI.%
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String sHeader; w/L^w50pt
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for(int i=1;;i++) p m4g),s
{ v{N4*P.0T
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Y1?"Ut
//Utility.log(in.readLine()); =aWj+ggd@
sHeader=httpConnection.getHeaderFieldKey(i); [|=#~(yYQ
if(sHeader!=null) ,s%1#cbR
{ Y7vTseq
if(sHeader.equals("Content-Length")) Nn"[GB
{ IZ$7'Mo86
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); BVKr 2v
break; pzo9?/-
} >y2;sJ4]D%
} SNV[KdvP*
else uB(16|W>S
break; x2#5"/~4
} arCi$:-z@
} 8sDbvVh1F
catch(IOException e){e.printStackTrace ();} 23lLoyN
catch(Exception e){e.printStackTrace ();} r((2.,\Z
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Utility.log(nFileLength); d 6$,iw@>^
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return nFileLength; }@6/sg
} `A]CdgA
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//保存下载信息(文件指针位置) )yV|vn
private void write_nPos() 19Cs
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try{ }Htnhom0n
output = new DataOutputStream(new FileOutputStream(tmpFile)); ){AtV&{$
output.writeInt(nStartPos.length); pJ` M5pF
for(int i=0;i<nStartPos.length;i++) ]x8_f6;D
{ h,Y!d]2w
// output.writeLong(nPos); L[]*vj
output.writeLong(fileSplitterFetch.nStartPos); F:PaVr3q
output.writeLong(fileSplitterFetch.nEndPos); u|!On
} jRswGMx
output.close(); &C~R*
} CQf<En|1
catch(IOException e){e.printStackTrace ();} 9`"o,wGX3
catch(Exception e){e.printStackTrace ();} tQSj[Yl
} Qy)+YhE
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//读取保存的下载信息(文件指针位置) Zz" b&`K
private void read_nPos() 7}r!&Eb
{ ZP@or2No%
try{ +d[A'&"
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); *]ROUk@K=
int nCount = input.readInt(); z (N3oBW
nStartPos = new long[nCount]; QT1(= wK3
nEndPos = new long[nCount]; }{! #`'s
for(int i=0;i<nStartPos.length;i++) `EV"
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{ a@|/D\C
nStartPos = input.readLong(); R^}}-Dvr
nEndPos = input.readLong(); ]L'FYOfrpx
} U({20
input.close(); hEO#uAR^Z
} ZS&n,<a5L}
catch(IOException e){e.printStackTrace ();}
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catch(Exception e){e.printStackTrace ();} dXkgWLI~
} :$bp4+3>
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private void processErrorCode(int nErrorCode) 2?",2x09
{ "6T: &>
System.err.println("Error Code : " + nErrorCode); 5ryzAB O\2
} ?;{fqeJz
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//停止文件下载 _%HpB=
public void siteStop() 81\$X
{ '~dE0ohWb
bStop = true; K3eYeXV
for(int i=0;i<nStartPos.length;i++) MA:2]l3e
fileSplitterFetch.splitterStop(); Hpo/CY/
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} }uI(D&?+h
} A),nkw0X
//负责部分文件的抓取 so* lV
**FileSplitterFetch.java GZ L{~7n
*/ NDG3mCl
package NetFox; r]XXN2[jO
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import java.io.*; <Tq&Va_w
import java.net.*; Sm(QgZO[4
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public class FileSplitterFetch extends Thread { ~[@Gj{6p0
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String sURL; //File URL sGNVZx
long nStartPos; //File Snippet Start Position dg%Orvuz
long nEndPos; //File Snippet End Position 9NH"Ik*
int nThreadID; //Thread's ID 6E9y[ %+
boolean bDownOver = false; //Downing is over <Sxsmf0"
boolean bStop = false; //Stop identical >".,=u'
FileAccessI fileAccessI = null; //File Access interface ]J^9iDTTA
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException P]bq9!{1
{ %-~W|Y
this.sURL = sURL; +39Vxe:Oy
this.nStartPos = nStart; uV]4C^k;`[
this.nEndPos = nEnd; ,hj5.;M
nThreadID = id; zVLv-U/=d
fileAccessI = new FileAccessI(sName,nStartPos);//定位 ?[4!2T,Ca
} Ua.7_Em
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public void run() 7wt2|$Qz
{ #1MEmt
while(nStartPos < nEndPos && !bStop) ,2F4S5F~rC
{ s*R\!L
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try{ xl%!7?G|$>
URL url = new URL(sURL); s5 2c`+
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); stnyJ9
httpConnection.setRequestProperty("User-Agent","NetFox"); lO/<xSjNd
String sProperty = "bytes="+nStartPos+"-"; Ol>"'
httpConnection.setRequestProperty("RANGE",sProperty); ?^z!yD\
Utility.log(sProperty); ;H#'9p ,2
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InputStream input = httpConnection.getInputStream(); q% Eze
//logResponseHead(httpConnection); ^}XKhn.S'
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byte[] b = new byte[1024]; C;DNL^
int nRead; Ep%5wR
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) NIeKS_ +
{ !HA[:-JCz
nStartPos += fileAccessI.write(b,0,nRead); ;!<WL@C~
//if(nThreadID == 1) Wt +,6Cq
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); RUTlwTdv
} h+mM
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Utility.log("Thread " + nThreadID + " is over!"); 15Vb`Vf`N
bDownOver = true; #C?T
//nPos = fileAccessI.write (b,0,nRead); ^7`"wj14
} 0_HdjK
catch(Exception e){e.printStackTrace ();} 2e}${NZN
} 9I>+Q&
} Q]_3 #_'
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//打印回应的头信息 'hl>pso.
public void logResponseHead(HttpURLConnection con) .BsZ.!MPL(
{ eTI<WFRc_
for(int i=1;;i++) b _fI1f|
{ _A*5BAB:h(
String header=con.getHeaderFieldKey(i); jB]tq2i
if(header!=null) :sRV]!Iw
//responseHeaders.put(header,httpConnection.getHeaderField(header)); W1X\!Y
Utility.log(header+" : "+con.getHeaderField(header)); Wjt1NfS&
else `nccRy<l
break; a^qLyF&F
} \Q"o\:IoIT
} DG8LoWZ
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public void splitterStop() ?2VY^7N[
{ i^ 9PiP|U
bStop = true; v}hmI']yf
} Dm/# \y3
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} C+-GE9=
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/* "J]_B
**FileAccess.java nAn/V u
*//文件访问(定位,写) .5I!h !
package NetFox; 16MRLDhnD
import java.io.*; f[3DKA
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public class FileAccessI implements Serializable{ *>!O2c
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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 d%?+q0j
RandomAccessFile oSavedFile; '1A S66k
long nPos; g(t"+
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public FileAccessI() throws IOException _[-+%RP
{ IM&2SSmYNH
this("",0); 3vPb}
} $: "r$7
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public FileAccessI(String sName,long nPos) throws IOException #%k!`?^fbK
{ *6~ODiB
oSavedFile = new RandomAccessFile(sName,"rw"); $X_JUzb
this.nPos = nPos; @-bX[}.
oSavedFile.seek(nPos); _^Lv8a3(O
} ][-N<
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public synchronized int write(byte[] b,int nStart,int nLen) }}XYV eI
{ e Ll+F%@
int n = -1; !=@Lyt)_b
try{ S!qJqZ<Bv
oSavedFile.write(b,nStart,nLen); `k65&]&d
n = nLen; *@fR36
} e{8z1t20:
catch(IOException e) T9]|*~ ,T
{ a&~_ba+
e.printStackTrace (); 3DnlXH(h1
} 9^h\vR|]S
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return n; Pk[:+. f(
} vJDK]p<}
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} !)RND 6.
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/* X-9>;Mb~y
**SiteInfoBean.java N-|E^XIV
*/ Etty{r}
package NetFox; *@=in7*c
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public class SiteInfoBean { cVJ"^wgBt
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