/* 7AFS)_w
**SiteFileFetch.java TF iM[
*/ e7)%=F/)
package NetFox; ? 3E_KGI
import java.io.*; 1p"EE~v
import java.net.*; nluyEK
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public class SiteFileFetch extends Thread { Pk?%PB?Z
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SiteInfoBean siteInfoBean = null; //文件信息Bean meVVRFQ2+
long[] nStartPos; //开始位置 !O -_Dp\#
long[] nEndPos; //结束位置 6+f>XL#w
FileSplitterFetch[] fileSplitterFetch; //子线程对象 <[B[
long nFileLength; //文件长度 SAxa7B/U2
boolean bFirst = true; //是否第一次取文件 8KELN(o$ 7
boolean bStop = false; //停止标志 Wj{Rp{}3
File tmpFile; //文件下载的临时信息 7[.Q.3FL
DataOutputStream output; //输出到文件的输出流 !7a^8
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) o_Kc nVQ\
public SiteFileFetch(SiteInfoBean bean) throws IOException W<hdb!bE
{ dK(%u9v
siteInfoBean = bean; n#L2cv~Aj"
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); $^D(%
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); zam0(^=
if(tmpFile.exists ()) *Wo$$T
{ !m:PBl5
bFirst = false; "M#`y!__
read_nPos(); LsD9hb7
} #vZ]2Ud=2
else ~TK^aM
{ {Ljl4Sp&
nStartPos = new long[bean.getNSplitter()]; OVo
nEndPos = new long[bean.getNSplitter()]; P;o>~Y>x
} I%b:Z
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} >,]e[/p
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public void run() MdboWE5i
{ l
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//获得文件长度 /ZN5WK
//分割文件 F$y FR
//实例FileSplitterFetch c&?H8G)x
//启动FileSplitterFetch线程 ao5yW;^y
//等待子线程返回 :yFCp@&
try{ ./*,Thc
if(bFirst) _,1kcDu
{
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nFileLength = getFileSize(); x<7` 109]
if(nFileLength == -1) 2DqHqq9m
{ %f(.OR)6{
System.err.println("File Length is not known!"); 4qcIoO
} 9@*>$6
else if(nFileLength == -2) }`FC__
{ k*6eZ 7
System.err.println("File is not access!"); b/}0
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} qa`(,iN
else <).qe Z
{ fTtSx_}3H
for(int i=0;i<nStartPos.length;i++) #UeU:RJ1
{ lc(iy:z@
nStartPos = (long)(i*(nFileLength/nStartPos.length)); +~.Jw#HqS
} !e"m*S.(6{
for(int i=0;i<nEndPos.length-1;i++) ]_xGVwem
{ QD VA*6F
nEndPos = nStartPos[i+1]; .Tqvy)'
} &L`p4AZ
nEndPos[nEndPos.length-1] = nFileLength; gCI'YEx
} +Z(VWu6
} M
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//启动子线程 \eN/fTPm
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 1c~#]6[
for(int i=0;i<nStartPos.length;i++) <$6E r
{ I _G;;GF
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), F>R)~;Ja
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), E?o8'r
nStartPos,nEndPos,i); 6x8|v7cMH
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); T )]|o+G
fileSplitterFetch.start(); ,IATJs$E
} o[6"XJ
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ,dMi+c`ax
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); =B%e0M
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ZWEzL$VWi
nEndPos = " + nFileLength); !Shh$iz
// fileSplitterFetch[nPos.length-1].start(); t4f\0`jN
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//等待子线程结束 M)Q+_c2*
//int count = 0; #TF
//是否结束while循环 UbH=W(%
boolean breakWhile = false; UeQ%(f
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while(!bStop) #+nv,?@
{ SJ@_eir\o
write_nPos(); +=$G6uR$
Utility.sleep(500); DO{4n1-U
breakWhile = true; P .( X]+
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for(int i=0;i<nStartPos.length;i++) syvi/6
{ ,r4af<
if(!fileSplitterFetch.bDownOver) xbA2R4|
{ \C|06Bs$
breakWhile = false; mJT
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break; 4{E=wg^p
} mj~CCokF{?
} (#k#0T kE
if(breakWhile) }qPo%T
break; fsu"Lc
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//count++; S0yT%V
//if(count>4) (FHh,y~v
// siteStop(); Q5JeL6t
} krU2S-
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System.err.println("文件下载结束!"); ^\%%9jY
} s#3{c@^3
catch(Exception e){e.printStackTrace ();} o 8U2vMH
} K.~U%v}
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//获得文件长度 Ja1*a,],L
public long getFileSize() B%/Pn
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{ !$HWUxM;p
int nFileLength = -1; ?hYe4tc-#
try{ Z(P#]jI]
URL url = new URL(siteInfoBean.getSSiteURL()); Xqk$[peS
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); G <q@K-
httpConnection.setRequestProperty("User-Agent","NetFox"); =%p{"<
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@@ QU"8q
int responseCode=httpConnection.getResponseCode(); 0a5P@;"a
if(responseCode>=400) ;z#9>99rH
{ [A47OR
processErrorCode(responseCode); x4K5
return -2; //-2 represent access is error &~8}y+z
} F)G#\r
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String sHeader; Z:Wix|,ONS
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for(int i=1;;i++) {)M4h?.2
{ %j,Ny}a
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ~Y(M>u.+!
//Utility.log(in.readLine()); x?kZD~|{)
sHeader=httpConnection.getHeaderFieldKey(i); }|d:(*
if(sHeader!=null) ;S7xJ'H
{ )Jc>l;G(M
if(sHeader.equals("Content-Length")) E9i WGSE
{ q%"nk
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); TJ<PT
break; \r2w@F{C
}
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} bu.36\78
else `e bB+gI
break; {:Q2Itsy
} =YBJ7.Y
} 8Xr3q eh+
catch(IOException e){e.printStackTrace ();} d3\8BKp
catch(Exception e){e.printStackTrace ();} I4hr5M3
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Utility.log(nFileLength); ^V:YNUqp#
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return nFileLength; >dM'UpN@
} Pzqgg43Xf
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//保存下载信息(文件指针位置) ;9~z_orNQZ
private void write_nPos() #O~Y[''C5X
{ e#seqx
try{ 5*CwQJC<
output = new DataOutputStream(new FileOutputStream(tmpFile)); l*eA
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output.writeInt(nStartPos.length); ;(sb^O
for(int i=0;i<nStartPos.length;i++) #yqcUbJY0R
{ WM#!X!Vo
// output.writeLong(nPos); 2#R"#Q!
output.writeLong(fileSplitterFetch.nStartPos); bhI8b/
output.writeLong(fileSplitterFetch.nEndPos); I}:/v$btM
} ;#+#W+0
output.close(); g
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} <[q)2 5RL
catch(IOException e){e.printStackTrace ();} aZ'p:9e
catch(Exception e){e.printStackTrace ();} oH;Y} h
} $qvNv[
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//读取保存的下载信息(文件指针位置) * n[6H
private void read_nPos() +X< Z
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{ o
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try{ q<1@ut
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 1^,r S
int nCount = input.readInt(); q"Xls(
nStartPos = new long[nCount]; /; _"A)0
nEndPos = new long[nCount]; BP7_o63/G
for(int i=0;i<nStartPos.length;i++) HG^8&uh]
{ >3ODqRu
nStartPos = input.readLong(); N&n{R8=^"
nEndPos = input.readLong(); ^mGT ZxO
} +,%x&L&I
input.close(); q\~7z1
} ?]})Xf.A
catch(IOException e){e.printStackTrace ();} B!<I[fvK
catch(Exception e){e.printStackTrace ();} Q=dR[t>^
} ;9^B# aTM
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private void processErrorCode(int nErrorCode) * T-XslI
{ UKzmRa,s
System.err.println("Error Code : " + nErrorCode); iCHZ{<k
} l"-D@]"
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//停止文件下载 GY!&H"%
public void siteStop() {S}/LSNB
{ -uh/W=Q1R
bStop = true; LvR=uD
for(int i=0;i<nStartPos.length;i++) -H]svOX
fileSplitterFetch.splitterStop(); rF5<x3
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} Wbc %G8
} %=|I;kI?
//负责部分文件的抓取 !ine|NM
**FileSplitterFetch.java > {:8c-\2}
*/ d BJM?/
package NetFox; A*$vk2VWw
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import java.io.*; TKmC/c
import java.net.*; {!,+C0
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public class FileSplitterFetch extends Thread { >s{[d$
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String sURL; //File URL 20J:_+=]
long nStartPos; //File Snippet Start Position gDA hl
long nEndPos; //File Snippet End Position co;2s-X
int nThreadID; //Thread's ID ch-GmAj
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boolean bDownOver = false; //Downing is over Qdtfi1_Y1
boolean bStop = false; //Stop identical x|Q6[Y
FileAccessI fileAccessI = null; //File Access interface ld3,)ZY
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException f",B;C
{ rVz#;d!`z
this.sURL = sURL; M+ H$Jjcs
this.nStartPos = nStart; NSx DCTw
this.nEndPos = nEnd; Z,!Rj7wZ
nThreadID = id; d+/d)cu
fileAccessI = new FileAccessI(sName,nStartPos);//定位 I5-/KVWb
} q k !Q2W
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public void run() yJr' \(
{ f'}23\>
while(nStartPos < nEndPos && !bStop) s(zG.7*3n
{ )2R:P`U
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try{ +pDuRr
URL url = new URL(sURL); ;KnnAZJ
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); wD*_S}]
httpConnection.setRequestProperty("User-Agent","NetFox"); 7=JiL=
String sProperty = "bytes="+nStartPos+"-"; 1W;+hXx
httpConnection.setRequestProperty("RANGE",sProperty); vuD tEz
Utility.log(sProperty); ;8UNM
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InputStream input = httpConnection.getInputStream(); Vls*fY:W
//logResponseHead(httpConnection); 5~ jGF
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byte[] b = new byte[1024]; =m:0#&t,*
int nRead; '!Q[+@$
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) =_TCtH
{ 2p@S-Lp
nStartPos += fileAccessI.write(b,0,nRead); |JrG?:n
//if(nThreadID == 1) @!K)(B;A0b
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); "4I`.$F%O(
} {X8F4
* \f(E#wa
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Utility.log("Thread " + nThreadID + " is over!"); (3W<yAM+
bDownOver = true; y|c]r!A
//nPos = fileAccessI.write (b,0,nRead); 3vmZB2QG
} .(3B}}gB>
catch(Exception e){e.printStackTrace ();} tz2`X V{
} '|Cs!Zl
} fU$zG"a_
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//打印回应的头信息 `y
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public void logResponseHead(HttpURLConnection con) :h?Zg(l
{ Nqy',N
for(int i=1;;i++) z[V|W
{ ]#_,?d
String header=con.getHeaderFieldKey(i); C S+6!F]
if(header!=null) :MpIx&
//responseHeaders.put(header,httpConnection.getHeaderField(header)); c7S<ex,
Utility.log(header+" : "+con.getHeaderField(header)); N#Y4nllJ
else 7@MVInV9
break; CShVJ:u+K\
} `[7&tOvSk
} %I[(`nb
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public void splitterStop() )k=8.j4
{ 'V .4Nhd
bStop = true; ,Rz,[KI|
} /6b(w=pk
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} r(0I>|u
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/* p%_r0
**FileAccess.java tk2B\}6
*//文件访问(定位,写) zZGPA j
package NetFox; ^`Vt<DMT
import java.io.*; { SJ=|L6
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public class FileAccessI implements Serializable{ !G Z2|~f9
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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 +.mIC:9
RandomAccessFile oSavedFile; A<QYW,:|
long nPos; ~`u?|+*BO
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public FileAccessI() throws IOException >{$;O
{ m>jX4D7KZ
this("",0); JPS L-j
} [P`Q_L,+
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public FileAccessI(String sName,long nPos) throws IOException lT DF5.aE
{ Y6W3WPs(
oSavedFile = new RandomAccessFile(sName,"rw"); cg}46)^<QH
this.nPos = nPos; `LVXK|m+ $
oSavedFile.seek(nPos); KSc&6UVz^
} *Iyv${
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public synchronized int write(byte[] b,int nStart,int nLen) 6WzE'0Nyr
{ 2<qq[2
int n = -1; gh['T,
try{ [`yiD>
oSavedFile.write(b,nStart,nLen); ,iB)8Km@U
n = nLen; Qf$0^$ "
} kS[k*bN0
catch(IOException e) 6 7~m9pk
{ |Gzd|$%Oq
e.printStackTrace (); )jn|+M
} iEsI
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return n; ~2S`y=*:
} I,l%6oPa
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} ghx8dX}
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/* Cc1sZWvz
**SiteInfoBean.java jcYI"f"~
*/ N?p9h{DG
package NetFox; C;OU2,c,T
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public class SiteInfoBean { (|I0C 'Ki
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private String sSiteURL; //Site's URL lF 8B+
private String sFilePath; //Saved File's Path }V ;PaX
private String sFileName; //Saved File's Name q@8Rlc&
private int nSplitter; //Count of Splited Downloading File [t: =%&B
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public SiteInfoBean() ygd'Nh!@
{//nSplitter的缺省值为5 /?9e{,\s
//default value of nSplitter is 5 Yc"G="XP;
this("","","",5); RIC'JLWQ
} ^r(2
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) (=)+as"u9*
{ ZBJ.dK?Ky|
sSiteURL= sURL; IgLP=mqcWK
sFilePath = sPath; 8Nd +
sFileName = sName; z
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this.nSplitter = nSpiltter; VrQw;-rQ
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} lh(A=hn"n
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public String getSSiteURL() qV/"30,K
{ AZI%KM[
return sSiteURL; '"GdO;}&
} s,]6Lri`\
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public void setSSiteURL(String value) \7$m[h{l
{ e@L+z
sSiteURL = value; @ns2$(wkm@
} v9x $`
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public String getSFilePath() L((z;y>q|
{ f$*M;|c1c/
return sFilePath; `w[0q?}"`
} uQ5NN*C=
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public void setSFilePath(String value) 3P^eD:)
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{ t=xO12Z
sFilePath = value; I@pnZ-5
} C/<fR:`c
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public String getSFileName() &EE6<-B-
{ 0=t_a]+
return sFileName; xDRK^nmC
} uLe+1`Y5Ux
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public void setSFileName(String value) ,y:q]PR
{ nITr5$f
sFileName = value; ]9R?2{"K
} `zZ=#p/
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public int getNSplitter() f>#\'+l'
{ ]A<\d
return nSplitter; UrN$nhH
} j(va#f#
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public void setNSplitter(int nCount) }9 qsPn
{ 'G@Npp)&^
nSplitter = nCount; G5TdAW
} :d)@|SR1
} lJ}G"RTm
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/* NawnC!~ $
**Utility.java zT!JHG
*/ ;,Lq*x2s
package NetFox; P1T LH2)
Gx'mVC"{
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