/* 2"`R_q
**SiteFileFetch.java Y<lJj"G
*/ 2y/|/IW=
package NetFox; '8+<^%c
import java.io.*; "F
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import java.net.*; 09jU 0x
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public class SiteFileFetch extends Thread { tz#Fy?pe
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SiteInfoBean siteInfoBean = null; //文件信息Bean y7ng/vqM7
long[] nStartPos; //开始位置 cE3g7(a
long[] nEndPos; //结束位置 dtHB@\1
FileSplitterFetch[] fileSplitterFetch; //子线程对象
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long nFileLength; //文件长度 |X :"AH"S
boolean bFirst = true; //是否第一次取文件 |G^w2"D_Z
boolean bStop = false; //停止标志 I<p- o/TP
File tmpFile; //文件下载的临时信息 )erI3?k
DataOutputStream output; //输出到文件的输出流 XcfvmlBoD-
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 1D3{\v
public SiteFileFetch(SiteInfoBean bean) throws IOException <Co\?h/<
{ n#F:(MSOp
siteInfoBean = bean; g\;&Z
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); mQ# 0c_
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); y7a84)j3
if(tmpFile.exists ()) >)E{Hs
{ ''Lf6S`4X~
bFirst = false; KxZup\\:v
read_nPos(); :Fe}.* t
} b#ih=qE
else TGUlJLT
{ zQpF,N<b
nStartPos = new long[bean.getNSplitter()]; -?T:> *]p
nEndPos = new long[bean.getNSplitter()]; AmSrc.
} yHrYSEM
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} ?]1_ 2\M
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public void run() 'JA<q-Gn
{ =8Bq2.nlR
//获得文件长度 Ft} h&aYP
//分割文件 X,+M?
//实例FileSplitterFetch 9Tju+KcK
//启动FileSplitterFetch线程 >m66j2(H*Z
//等待子线程返回 Gp&o
try{ jv<C#0E^
if(bFirst) ;:2:f1_
{ m]XG7:}V0
nFileLength = getFileSize(); #`kLU:
if(nFileLength == -1) m :M=De
{ 1m c'=S{
System.err.println("File Length is not known!"); ;:)1:Dy5
} D'
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else if(nFileLength == -2) P LHiQ:
{ VB(S]N)F^
System.err.println("File is not access!"); T~&9/%$F
} gGdt&9z
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else ;|a,1#x
{ 'f'zV@)
for(int i=0;i<nStartPos.length;i++) kim qm
{ 1-!q,q
nStartPos = (long)(i*(nFileLength/nStartPos.length)); ?G|*=-8
} cV|u]ce%1
for(int i=0;i<nEndPos.length-1;i++) O4l]Q
{ dE ,NG)MH
nEndPos = nStartPos[i+1]; b ~5Q|3P 9
} =r?#,'a
nEndPos[nEndPos.length-1] = nFileLength; [*{G,=tF`Y
} b@p3iq:
} 4/_@ F>I_
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//启动子线程 n"Gow/-;
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; j$%uip{
for(int i=0;i<nStartPos.length;i++) &I= 27!S
{ 1kDr;.m%
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), udld[f.
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), $>Mqo
nStartPos,nEndPos,i); ~WKcO&
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 9hNHcl.
fileSplitterFetch.start(); ]CL9N
} BS(XEmJn&j
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), )^D:VY92
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); =xf7lN'
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 7?[{/`k~?
nEndPos = " + nFileLength); *
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// fileSplitterFetch[nPos.length-1].start(); "&@v[O)!xu
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//等待子线程结束 KcW]"K>p!
//int count = 0; $@R[$/
//是否结束while循环 'IykIf
boolean breakWhile = false; qad`muAd
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while(!bStop) 83|7#L
{ CSBk
write_nPos(); 4/Wqeq,E8
Utility.sleep(500); s/"l ?d
breakWhile = true; CnvM>]
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for(int i=0;i<nStartPos.length;i++) mv0JD(
{ x9lG$0k:V
if(!fileSplitterFetch.bDownOver) \{Yi7V
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{ 3r]m8Hp
breakWhile = false; QEb
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break; EAE\'9T&g
} 3u tJlD
} Js'#=
if(breakWhile) KK|AXoBf
break; e; #"t
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//count++; W :qQ
//if(count>4) lZI?k=rWv
// siteStop(); O:hCUr
} jH4'jB
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System.err.println("文件下载结束!"); 1X7tN2tQ
} i!U,qV1
catch(Exception e){e.printStackTrace ();} g`690
} Te :4z@?
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//获得文件长度 {~lVe GBp
public long getFileSize() G5R"5d'
{ UF$JVb
int nFileLength = -1; n!Dy-)!`O
try{ ;YYo^9Lh}
URL url = new URL(siteInfoBean.getSSiteURL()); I<["ko,t@?
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); T/b%,!N)
httpConnection.setRequestProperty("User-Agent","NetFox"); 4J"S?HsW|
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int responseCode=httpConnection.getResponseCode(); ;#goC N.
if(responseCode>=400) y7?n;3U]CS
{ v_7?Zik8E
processErrorCode(responseCode); x bsk
return -2; //-2 represent access is error Hfw*\=p
} { !;I4W%!
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String sHeader; B]""%&! O
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for(int i=1;;i++) )e1&[0
{ ev$\Ns^g$3
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); " G&S`8
//Utility.log(in.readLine()); 5Wyo!pRi
sHeader=httpConnection.getHeaderFieldKey(i); hS?pc<~`#
if(sHeader!=null) WlJ$p$I`
{ 6BnP"R.
if(sHeader.equals("Content-Length")) Tf|?j=f
{ FM80F_G^z
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); R[%ZyQ_
break; 9;L5#/E
} "k0b j>
} ,/XeG`vk
else a&?SRC'x
break; mw[T[
} !sJ*0
} Rfk8trD B
catch(IOException e){e.printStackTrace ();} L355uaj
catch(Exception e){e.printStackTrace ();} yqY nd<K4
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Utility.log(nFileLength); \$iU#Z
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return nFileLength; 8n[6BF);
} gq'}LcV
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//保存下载信息(文件指针位置) swfcA\7R
private void write_nPos() rmzM}T\20
{ us_o{
try{ m,u5S=3A{!
output = new DataOutputStream(new FileOutputStream(tmpFile)); Zs(I]^w;d
output.writeInt(nStartPos.length); (D?%(f
for(int i=0;i<nStartPos.length;i++) QXQ'QEG
{ O]XdPH20
// output.writeLong(nPos); D.i(Irqw!
output.writeLong(fileSplitterFetch.nStartPos); }Sxuc/%:
output.writeLong(fileSplitterFetch.nEndPos);
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} B5nzkJV<X
output.close(); w`N|e0G@
} wa#$9p~Q
catch(IOException e){e.printStackTrace ();} "M GX(SQ
catch(Exception e){e.printStackTrace ();} &8##)tS(y
} \e=Iw"yd
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//读取保存的下载信息(文件指针位置) 'T
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private void read_nPos() DR d|m<Z
{ $s*nh>@7
try{ -=tf)
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); pBd_BaN
int nCount = input.readInt(); rzR=% >
nStartPos = new long[nCount]; (.CEEWj%{
nEndPos = new long[nCount]; ]ZkR~?
for(int i=0;i<nStartPos.length;i++) @y|ZXPC#
{ sULCYiT|Hn
nStartPos = input.readLong(); f>*D@TrU
nEndPos = input.readLong(); eaG _)y
} (9"w{pnlLc
input.close(); &gP/<!#
} Xscm>.di
catch(IOException e){e.printStackTrace ();} <wIz8V
catch(Exception e){e.printStackTrace ();} 4*)a3jI?
} '=M4(h
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private void processErrorCode(int nErrorCode) n^a&@?(+
{ ~36)3W[4
System.err.println("Error Code : " + nErrorCode); L.E6~Rv
} y7x&/2
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//停止文件下载 &B3[:nS2
public void siteStop() )jS9p~FS
{ _$Wj1h
bStop = true; b3zxiq
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for(int i=0;i<nStartPos.length;i++) >dr34=(
fileSplitterFetch.splitterStop(); ']x`d
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} #835$vOe
} @`IMR$'
//负责部分文件的抓取 dr54D
**FileSplitterFetch.java VbwB<nQl
*/ ! U6 x_
package NetFox; RTLA*
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M<%g )jn_
import java.io.*; 0m,3''Q5lO
import java.net.*; )zKZ<;#y
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public class FileSplitterFetch extends Thread { 4U;Zs3
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String sURL; //File URL %mO.ur>21
long nStartPos; //File Snippet Start Position .!B>pp(9
long nEndPos; //File Snippet End Position Y*KP1=Md
int nThreadID; //Thread's ID ~vL`[JiK
boolean bDownOver = false; //Downing is over
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boolean bStop = false; //Stop identical TTfU(w%&P
FileAccessI fileAccessI = null; //File Access interface W/\M9
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException /_?y]Ly[r
{ `1hM3N.nO
this.sURL = sURL; 88}=VS
this.nStartPos = nStart; Cb1fTl%
this.nEndPos = nEnd; mj!P
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nThreadID = id; Wifr%&t{J
fileAccessI = new FileAccessI(sName,nStartPos);//定位 \nKpJ9!
} fl4z'8P"(
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public void run() pAm
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{ "h84D&V
while(nStartPos < nEndPos && !bStop) vz*'1ugaA
{ HXg#iP^tv
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try{ d$;1%rRj8
URL url = new URL(sURL); +YNN$i
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); #% 1|$V*:
httpConnection.setRequestProperty("User-Agent","NetFox"); ,iy;L_N
String sProperty = "bytes="+nStartPos+"-"; RoY"Haa
httpConnection.setRequestProperty("RANGE",sProperty); / Ml d.
Utility.log(sProperty); )d^b\On
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InputStream input = httpConnection.getInputStream(); ]CnqPLqL
//logResponseHead(httpConnection); -IP 3I
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byte[] b = new byte[1024]; G^6\ OOSy
int nRead; +'!4kwT R
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) XVRtfo
{ o<f#Zi
nStartPos += fileAccessI.write(b,0,nRead); W4ygJL7 6
//if(nThreadID == 1) A:JWUx
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); flr&+=1?D
} n?EL\B
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Utility.log("Thread " + nThreadID + " is over!"); Rc.8j,]
bDownOver = true; a+_F^
//nPos = fileAccessI.write (b,0,nRead); }2;{}J
} a=%QckR*
catch(Exception e){e.printStackTrace ();} km[PbC
} ;A3aUN;"I
} $At,D.mGkb
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//打印回应的头信息 LqOjVQxz
public void logResponseHead(HttpURLConnection con) >RL|W}tI4
{
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for(int i=1;;i++) h=`1sfz
{ I8]q~Q<-P
String header=con.getHeaderFieldKey(i); ;^cc-bLvF
if(header!=null) HbUadPr
//responseHeaders.put(header,httpConnection.getHeaderField(header)); ,VTX7vaH
Utility.log(header+" : "+con.getHeaderField(header)); (!iGQj(m
else aDreN*n
break; ZR|cZH1}C
} jh*aD=y
} =>Md>VM
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public void splitterStop() -?K?P=B;X
{ -Z/'kYj?U
bStop = true; nOE 1bf^l
} *?Pbk+}%
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} a!?&8$^<
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/* 5csqu^/y
**FileAccess.java i H^Gv *
*//文件访问(定位,写) dAZh# i[
package NetFox; IUJRP
import java.io.*; B2uLfi$q
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public class FileAccessI implements Serializable{ o3oAk10
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//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 ]mW)T0_
RandomAccessFile oSavedFile; 9j6
long nPos; V L&5TZtz
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public FileAccessI() throws IOException /h!Y/\ kI
{ f4k\hUA
this("",0); xg>AW Q
} 0qV"R7TW
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public FileAccessI(String sName,long nPos) throws IOException KP[H&4eoC
{ R4R SXV
oSavedFile = new RandomAccessFile(sName,"rw"); nO d'$q
this.nPos = nPos; O+o4E?}
oSavedFile.seek(nPos); @YMQbjbr
} k$hNibpkt
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public synchronized int write(byte[] b,int nStart,int nLen) r:&"#F
{ MZ8jL,a^
int n = -1; <Rl:=(]i~
try{ P0En&g+~
oSavedFile.write(b,nStart,nLen); nn"Wn2ciS
n = nLen; jmAQ!y|W.
} &y}nd
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catch(IOException e) nA\9UD<G.
{ ~[CtsCiQ
e.printStackTrace (); BE;J/
} iE|qU_2Y
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return n; H8ws6}C
} G$5N8k[2
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} }^Unx W
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/* Rv)!p~V8
**SiteInfoBean.java |vZ\tQ
*/ 7H-,:8
package NetFox; hm%'k~
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public class SiteInfoBean { K8`M~P.
;
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private String sSiteURL; //Site's URL xb!h?F&
private String sFilePath; //Saved File's Path n.{+\M6k
private String sFileName; //Saved File's Name yn0OPjH
private int nSplitter; //Count of Splited Downloading File 'JBf*p".
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public SiteInfoBean() ({ 7tp!@
{//nSplitter的缺省值为5 _jw A_
//default value of nSplitter is 5 )
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this("","","",5); |5wuYG
} 74 c1i
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) E6SGK,f0D
{ p_$03q>oQ
sSiteURL= sURL; !af35WF
sFilePath = sPath; e&C(IEZ/N;
sFileName = sName; ,`/J1(\nd
this.nSplitter = nSpiltter; APT'2-I_
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} GNXQD}L?b?
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public String getSSiteURL() krTH<- P
{ IKM=Q.
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return sSiteURL; "HW~|M7>(
} DT # 1*&-
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public void setSSiteURL(String value) ,Cg uY/y
{ W'\{8&:!
sSiteURL = value; ZpPm>|w
} YMG{xGPtM
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public String getSFilePath()
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{ [{_JO+)+n
return sFilePath; >9D=PnHnD
} JBdZ]
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public void setSFilePath(String value) H~+D2A
{ |b'fp1<