/* W>!:K^8]
**SiteFileFetch.java 8zMGpY#
*/ rEp\ld
package NetFox; C"n!mr{srt
import java.io.*; *P\lzM
import java.net.*; Zq33R`
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public class SiteFileFetch extends Thread { &I
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SiteInfoBean siteInfoBean = null; //文件信息Bean XS2/U<sd
long[] nStartPos; //开始位置 J[l7p6xk
long[] nEndPos; //结束位置 F/Js K&&
FileSplitterFetch[] fileSplitterFetch; //子线程对象 rCqwJoC`v
long nFileLength; //文件长度 TX YO{
boolean bFirst = true; //是否第一次取文件 z4D)Xy"/
boolean bStop = false; //停止标志 'J*'{
File tmpFile; //文件下载的临时信息 q<.k:v&
DataOutputStream output; //输出到文件的输出流 U^[AW$WzU
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) sQ\HIU%]
public SiteFileFetch(SiteInfoBean bean) throws IOException 7p'pz8n`X
{ &jEw(P&_
siteInfoBean = bean; /NB|N*}O)
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath()));
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tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); J0k!&d8
if(tmpFile.exists ()) n\Lsm
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bFirst = false; V1Ft3Msq
read_nPos(); hy#nK:B
} MA9E??p3\
else m~=VUhPd
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nStartPos = new long[bean.getNSplitter()]; &b:y#gvJ:
nEndPos = new long[bean.getNSplitter()]; z{BgAI,
} GNHXtu6
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public void run() p) ;[;S
{ eCJtNPd
//获得文件长度 <}&J|()
//分割文件 $[HCetaqV
//实例FileSplitterFetch Y[b08{/
//启动FileSplitterFetch线程 .(p_YjIA
//等待子线程返回 P;XA|`&
try{ ShtV2}s|
if(bFirst) PY4">~6\i
{ OPUrz ?p2C
nFileLength = getFileSize(); "}0QxogYE
if(nFileLength == -1) ci?\W6
{ ,*V%
System.err.println("File Length is not known!"); 4j+M<g
} 7a_u=\,
else if(nFileLength == -2) SsMs#C8u%
{ ,,j> 2Ts
System.err.println("File is not access!"); /w6'tut
} Xeja\5zB
else zGd[sjL
{ !RLXB$@`
for(int i=0;i<nStartPos.length;i++) |jH Yf42Q
{ fi'zk
nStartPos = (long)(i*(nFileLength/nStartPos.length)); 0ZD)(ps|
} sjLm-pn3
for(int i=0;i<nEndPos.length-1;i++) xzx~H>M
{ 6e,IjocsB
nEndPos = nStartPos[i+1]; m bhh
} |w~*p
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nEndPos[nEndPos.length-1] = nFileLength; (:H4
} M?sTz@tqq
} .pxUO3g
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//启动子线程 &-IkM%_A9
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; S_AN.8T
for(int i=0;i<nStartPos.length;i++) ,{ 0&NX
{ o@$pyU8
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), I+Qt5Ox
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), aY,'^S
nStartPos,nEndPos,i); @GweNo`p7
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); hE\gXb
fileSplitterFetch.start(); (3x2^M8
} [ x.]
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ]~3a ~
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ;&w_.j*Is
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", n[a%*i6x
nEndPos = " + nFileLength); hE,-CIRg
// fileSplitterFetch[nPos.length-1].start(); ^8ilUu
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//等待子线程结束 T-s[na(/L
//int count = 0; `P|V&;}K
//是否结束while循环 *g'%5i1ed
boolean breakWhile = false; (L1O;~$
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while(!bStop) S}/ZHo
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write_nPos(); ?$\sMkn
Utility.sleep(500); PEtr8J$uB
breakWhile = true; 5}9rpN{y
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for(int i=0;i<nStartPos.length;i++) dqt}:^L*0g
{ .zW.IM}Z
if(!fileSplitterFetch.bDownOver) >6(e6/C-9
{ \Z/0i|
breakWhile = false; {oo(HD;5
break; }&Xf<6
} 2mthUq9b*
} Hb$wawy<
if(breakWhile) J
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break; cKwmtmwB
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//count++; d\ 7OtM
//if(count>4) 8fWIZ
// siteStop(); uF*tlaV6
} :G<~x8]k0
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System.err.println("文件下载结束!"); XPi5E"
} NQbgk+&wD
catch(Exception e){e.printStackTrace ();}
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} EF6"PH+J@
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//获得文件长度 Oh1a'&
public long getFileSize() i@YM{FycX
{ &xFs0Ri(
int nFileLength = -1;
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try{ 8;,(D#p
URL url = new URL(siteInfoBean.getSSiteURL()); `C*psS
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ARB^]
httpConnection.setRequestProperty("User-Agent","NetFox"); <5c^DA
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int responseCode=httpConnection.getResponseCode(); u&Xn#fh
if(responseCode>=400) ^12}#I
{ LtDGu})1
processErrorCode(responseCode); +227SPLd
return -2; //-2 represent access is error !?{%9
} C #@5:$
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String sHeader; Bp=BRl
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for(int i=1;;i++) Ot!*,%sjQ
{ <;E>1*K}8
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Z#_VxA>]v
//Utility.log(in.readLine()); $olITe"$g
sHeader=httpConnection.getHeaderFieldKey(i); XV<{tqa
if(sHeader!=null) YksJ$yH^
{ >56;M7b(K
if(sHeader.equals("Content-Length")) ==W] 1@s
{ [iG4qI
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); URxy*)
break; {F$MZ2 E
} G c:oSvm
} }z wHUf9q1
else MB(l*ju0
break; l$!g#?w
} oIY@xuj
} ulY<4MN
catch(IOException e){e.printStackTrace ();} JsQmn<Yt
catch(Exception e){e.printStackTrace ();} v0~*?m4
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Utility.log(nFileLength); :e TzjW=
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return nFileLength; k3B]u.Lo
} ~_yz\;#
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//保存下载信息(文件指针位置) mwqe@7
private void write_nPos() GH6ozWA
{ }?z_sNrDk
try{ 0%hOB:
output = new DataOutputStream(new FileOutputStream(tmpFile)); !PY.FnZ
output.writeInt(nStartPos.length); bp(X\:zAy
for(int i=0;i<nStartPos.length;i++) "+ 8Y{T
{ ?Kf?Z`9 *Y
// output.writeLong(nPos); ^U@Erc#d
output.writeLong(fileSplitterFetch.nStartPos); ;1woTAuD
output.writeLong(fileSplitterFetch.nEndPos); wWUt44:0O
} P}C;%KzA
output.close(); `Ot;KDz
} YumHECej
catch(IOException e){e.printStackTrace ();} hj-#pL-t
catch(Exception e){e.printStackTrace ();} x[H9<&)D
} %'i`Chc^!;
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//读取保存的下载信息(文件指针位置) g6 T /k7a
private void read_nPos() 1W2hd!J7C
{ SAw. 6<Wy-
try{ _0]{kB.$_
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); B[6y2+6$0
int nCount = input.readInt(); M%Dv-D{
nStartPos = new long[nCount]; qHQ#^jH
nEndPos = new long[nCount]; )o@-h85";
for(int i=0;i<nStartPos.length;i++) }CXL\,;
{ _^pg!j[Fy}
nStartPos = input.readLong(); =M+enSu
nEndPos = input.readLong(); hA_Y@&=W
} YF<;s^&@u
input.close(); QO%#.s
} ~Uw<E:?v
catch(IOException e){e.printStackTrace ();} ~$3X>?Q
catch(Exception e){e.printStackTrace ();} V$XCe
} X$4 5<oz
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private void processErrorCode(int nErrorCode) ~%o?J"y
{ jI9Kn41
System.err.println("Error Code : " + nErrorCode); B^u qu
} 9&uWj'%ia
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}28,fb
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//停止文件下载 ROB/#Td
public void siteStop() 92HxZ*t7km
{ d;10[8:5=
bStop = true; g` QbJ61a
for(int i=0;i<nStartPos.length;i++) ]ZOzqh_0C
fileSplitterFetch.splitterStop(); `CXAE0Fx
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} zS##YR
} +WP
//负责部分文件的抓取 =9ISsI\Y6
**FileSplitterFetch.java D.\s mk
*/ K 6Gri>Um
package NetFox; fhZD[m#D
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import java.io.*; On{p(|l
import java.net.*; V=,VOw4
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public class FileSplitterFetch extends Thread { $|yO
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String sURL; //File URL \y
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long nStartPos; //File Snippet Start Position HFL(t]
long nEndPos; //File Snippet End Position ,!RbFME&H
int nThreadID; //Thread's ID Iq-+X3i
boolean bDownOver = false; //Downing is over ,^UNQO*{GI
boolean bStop = false; //Stop identical mzl %h[9iI
FileAccessI fileAccessI = null; //File Access interface SH/KC
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException _bO4s#yI
{ IW.~I,!x
this.sURL = sURL; 0V&6"pF_Y'
this.nStartPos = nStart; ]`2=<n;=
this.nEndPos = nEnd; 62 biOea
nThreadID = id; q{W@J0U
fileAccessI = new FileAccessI(sName,nStartPos);//定位 ;(0E#hGN
} +h$)l/>:
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public void run() j<LDJi>O
{ |\OG9{q
while(nStartPos < nEndPos && !bStop) OBY
{ Q( C\X
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try{ 'o#ve72z1
URL url = new URL(sURL); D#T1~r4
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); d +Vx:`tT
httpConnection.setRequestProperty("User-Agent","NetFox"); :{d?B$
String sProperty = "bytes="+nStartPos+"-"; nSL
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httpConnection.setRequestProperty("RANGE",sProperty); _[,oP s:+
Utility.log(sProperty); 'Zdjd]
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InputStream input = httpConnection.getInputStream(); zd+_
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//logResponseHead(httpConnection); ;MqH)M
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byte[] b = new byte[1024]; *jps}uk<
int nRead; (P-Bmu!s
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) mE"?{~XVL
{ (YbRYu
nStartPos += fileAccessI.write(b,0,nRead); S[bFS7[
//if(nThreadID == 1) j#TtY|Po
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); +K3SAGm
} /=zzym~<>
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Utility.log("Thread " + nThreadID + " is over!"); EPQ~V
bDownOver = true; R(c:#KF#8
//nPos = fileAccessI.write (b,0,nRead); d85\GEF9i
} r?s,
catch(Exception e){e.printStackTrace ();} 8\BCC1K
} >4A~?=
} ,1"w2, =
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//打印回应的头信息 l@8UL</W
public void logResponseHead(HttpURLConnection con) X`d d"8%
{ |=7ouFl
for(int i=1;;i++) 2l)J,z
{ K +oFu%
String header=con.getHeaderFieldKey(i); S+Aq0B<
if(header!=null) 5YlY=J
//responseHeaders.put(header,httpConnection.getHeaderField(header)); DlkHE8r\
Utility.log(header+" : "+con.getHeaderField(header)); m]yt6b4
else Y~qv 0O6K
break; KKR@u(+"a
} _R!KHi
} x<'(b7{U0
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public void splitterStop() "#4p#dM0e
{ D{&0r.2F
bStop = true; 8#OcrJzC
} ~:Jw2 P2z
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} sE4=2p`x
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/* I*/?*p/I
**FileAccess.java ?j^[7
*//文件访问(定位,写) IR (6
package NetFox; o0Z(BTO
import java.io.*; +?[,y
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public class FileAccessI implements Serializable{ 289@O-
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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 03ol!|X"9
RandomAccessFile oSavedFile; as1ZLfN.
long nPos; (nk)'ur.
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public FileAccessI() throws IOException $]4>;gTL'
{ }QszOi\fV1
this("",0); Yx21~:9}
} :"+/M{qz
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public FileAccessI(String sName,long nPos) throws IOException D ];%Ey
{ ,6,sz]3-
oSavedFile = new RandomAccessFile(sName,"rw"); 3/P#2&jt
this.nPos = nPos; |wASeZMO2
oSavedFile.seek(nPos); {*VCR
} )J?Nfi%
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public synchronized int write(byte[] b,int nStart,int nLen) 2IgTB|2
{ mE3^5}[>
int n = -1; B+G,v:)R6z
try{ {EKzPr/
oSavedFile.write(b,nStart,nLen); cd36f26`"w
n = nLen; 0h~Iua5
} 9$&+0
catch(IOException e) cPh
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{ H6ff b)&
e.printStackTrace (); U$[C>~ r
} v:*t5M
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return n; .\kcWeC\
}
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} 5BvCP
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/* 0MK|spc
**SiteInfoBean.java G1 ?."
*/ +8e~jf3E1
package NetFox; | ,bCYK
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public class SiteInfoBean { Qe=,EXf
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private String sSiteURL; //Site's URL >}#h
private String sFilePath; //Saved File's Path &61;v@
private String sFileName; //Saved File's Name 7Y$#*
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private int nSplitter; //Count of Splited Downloading File "4c
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public SiteInfoBean() F|K=].
{//nSplitter的缺省值为5
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//default value of nSplitter is 5 e0O2>w
this("","","",5); Z%3]
} Ekx3GM_]
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) K ~"J<798{
{ ncg5%(2
sSiteURL= sURL; (Dr g
sFilePath = sPath; IUco
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sFileName = sName; Nx~9Ug
this.nSplitter = nSpiltter; xaO9?{O
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} H`/QhE
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public String getSSiteURL()
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{ NG-Wn+W@b
return sSiteURL; fY@Y$S`Fh
} yjZ]_.
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public void setSSiteURL(String value) J&4QI( b.
{ S pxkB!
sSiteURL = value; c$),/0td|
} {6%vmMbJ
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public String getSFilePath() Bq~!_6fB
{ -<kl d+
return sFilePath; 2Y_ `&
} @xKLRw
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public void setSFilePath(String value) &V7@ TZ
{ }} cz95
sFilePath = value; E~?0Yrm F
} f}q4~NPn-
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public String getSFileName() &6fNPD(|
{ *Dr -{\9
return sFileName; 12 HBq8o
} `]^0lD=eI
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public void setSFileName(String value) ~ZeF5
{ 85;
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sFileName = value; ' uvTOgP,
} Rd6? ,
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public int getNSplitter() DQ7+
{ USz|Rh
return nSplitter; ;xFx%^M}br
} {~.~ b+v
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public void setNSplitter(int nCount) *yJCnoF
{ oTOr,Mn0\6
nSplitter = nCount; ?>b>LDpx?
} L><# I
} WP, Ll\K)7
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/* q{v:T}Q|A
**Utility.java D=}UKd
*/ %H=d_Nm{
package NetFox; YXE?b@W"
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public class Utility { ^VsX9
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public Utility() ?E1<>4S8
{ P" +!mSe^~
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} hE>ux"_2/
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//线程睡眠 \l^L?69
public static void sleep(int nSecond) :^7P. lhK
{ e?W-vi%
try{ U ObI&*2
Thread.sleep(nSecond); `"CIy_m
} )eFXjnHN
catch(Exception e) #clOpyT*
{ ~B!O
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e.printStackTrace (); 9kmEg$WM
} 0zrgK;9
} DG&
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//日志 z%xWP&3%"
public static void log(String sMsg) IS *-MLi
{ v ~|~&Dwq
System.err.println(sMsg); |l\&4/SJ
} &R