/* `e3$jy@
**SiteFileFetch.java uD{ xs
*/ v7#|%
package NetFox; v&]yzl
import java.io.*; ~>0H
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import java.net.*; i tk/1
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public class SiteFileFetch extends Thread { 4qsxlN>4O
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SiteInfoBean siteInfoBean = null; //文件信息Bean Y2dml!QM
long[] nStartPos; //开始位置 {%y|A{}c
long[] nEndPos; //结束位置 $[7/~I>m
FileSplitterFetch[] fileSplitterFetch; //子线程对象 >mEfd=p
long nFileLength; //文件长度 w?N>3`Jnf
boolean bFirst = true; //是否第一次取文件 ,PJC FQMR
boolean bStop = false; //停止标志 bt.3#aj
File tmpFile; //文件下载的临时信息 <1*\ ~CX
DataOutputStream output; //输出到文件的输出流 <X& fs*x&
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) alNn(0MG
public SiteFileFetch(SiteInfoBean bean) throws IOException VUHf-bKl
{ !V/7q'&t=
siteInfoBean = bean; 4UzXTsjM7
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); f:~$x
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 5e7\tBab
if(tmpFile.exists ()) A9"!=/~
{ Bx$?*y&f!v
bFirst = false; `GCK%evLG
read_nPos(); mDD96y
} bF+j%=
else |68/FJZ,5
{ pm:- E(3#
nStartPos = new long[bean.getNSplitter()]; eU e, P
nEndPos = new long[bean.getNSplitter()]; b+hN\/*]
} ~ kDJ-V
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} &k-NDh3
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public void run() F8Mf,jnPs
{ #qD[dC$[t
//获得文件长度 ]\L+]+u~
//分割文件 ];b+f@
//实例FileSplitterFetch V3d$C&<(
//启动FileSplitterFetch线程 fH:S_7i
//等待子线程返回 X6qgApyE
try{ DUF$-'A
if(bFirst) UA]fKi
{ ~3f|-%Z
nFileLength = getFileSize(); ji.?bKqHE
if(nFileLength == -1) EN}XIa>R
{ tXZMr
System.err.println("File Length is not known!"); )/~o'M3
} ]fU&?z#
else if(nFileLength == -2) H~>8q~o]
{ 9nFWJn
System.err.println("File is not access!"); KH=3HN}
} DxpJP,wY3
else Y3(I;~$!
{ yaWY>sB
for(int i=0;i<nStartPos.length;i++) +*Uv+oC|
{ KU+\fwYpnk
nStartPos = (long)(i*(nFileLength/nStartPos.length)); ;)P=WS:=
} %f1IV(3Qc
for(int i=0;i<nEndPos.length-1;i++) 4*5 e0:O
{ ZW0\_1
nEndPos = nStartPos[i+1];
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} Em5,Zr_
nEndPos[nEndPos.length-1] = nFileLength; ;c DMcKKIA
} (~E-=+R[$&
} oGl<i
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//启动子线程 [/VpvQ'
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ;$gV$KB:xA
for(int i=0;i<nStartPos.length;i++) .9,x_\|G*
{ T{"Ur:p
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 4gNN "
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ;FF+uK
nStartPos,nEndPos,i); a l6y=;\jZ
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); e5n]@mu%
fileSplitterFetch.start(); hiA\~}sl n
} )|k#cT{=M
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 0( A ?&
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); wAX;)PLg
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", k.o8!aCm
nEndPos = " + nFileLength); {x_cgsn
// fileSplitterFetch[nPos.length-1].start(); M6^
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//等待子线程结束 o^*:
//int count = 0; H)"]I3
//是否结束while循环 S4{vS?>j
boolean breakWhile = false; /~f[>#
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while(!bStop) =s]2?m
{ -o`K/f}d
write_nPos(); 7Hgn/b[?b
Utility.sleep(500); 0j6b5<Gpc*
breakWhile = true; c ^.^5@
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for(int i=0;i<nStartPos.length;i++) j%-Ems*H
{ vc p{Gf|^
if(!fileSplitterFetch.bDownOver) fHEIys,{
{ 8#Z)qQWi_t
breakWhile = false; ]BjYUTNm
break; 8]`s&d@GY
} 9lR6:}L7
} p5vQ.Ni*\-
if(breakWhile) g'7\WQ
break; "5
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//count++; F+Qnf'at1
//if(count>4) e7{6<[k3+$
// siteStop(); 3C%|src
} b|DU
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System.err.println("文件下载结束!"); r"h09suZBW
} Z$KyK.FUU
catch(Exception e){e.printStackTrace ();} FZ+2{wIV^
} W,Q>3y*
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//获得文件长度 rA B=H*|6
public long getFileSize() wbKJ:eWgt
{ [7gz?9VyLF
int nFileLength = -1; xW5 `.^5
try{ [m
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URL url = new URL(siteInfoBean.getSSiteURL()); `^hA &/1
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Oy=0Hsh@x
httpConnection.setRequestProperty("User-Agent","NetFox"); iJOG"gI&
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int responseCode=httpConnection.getResponseCode(); 50-7L,
if(responseCode>=400) tugIOA
{ -bOtF%
processErrorCode(responseCode); CkNR{?S
return -2; //-2 represent access is error yx-"&K=`
} :LNZC,-f}5
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String sHeader;
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for(int i=1;;i++) qg`ae
{ Zn
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 6:B,ir
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//Utility.log(in.readLine()); ]J!#"m-]
sHeader=httpConnection.getHeaderFieldKey(i); {Hl(t$3V`
if(sHeader!=null) U=
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{ h~Z &L2V
if(sHeader.equals("Content-Length")) @Q2E1Uu%
{ 1)
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); V
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break; f['lY1#V1
} 6c-'CW
} =lk'[P/p`
else $A{$$8P
break; s-Yu(X2
} <|Lz#iV37
} [u K,.G
catch(IOException e){e.printStackTrace ();} UV}:3c6 ZX
catch(Exception e){e.printStackTrace ();} :M{
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Utility.log(nFileLength); cRr3!<EZ
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return nFileLength; W?4:sLC#3
} ,z#D[5
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//保存下载信息(文件指针位置) Ar/P%$Zfq
private void write_nPos() 7ixG{yu
{ 0Q7<;'m
try{ p7`9
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output = new DataOutputStream(new FileOutputStream(tmpFile)); )hO%W|
output.writeInt(nStartPos.length); Eb9h9sjv
for(int i=0;i<nStartPos.length;i++) ?_AX;z
{ '\8YH+%It
// output.writeLong(nPos); CckfoJ 9
output.writeLong(fileSplitterFetch.nStartPos); "OI$PLK
output.writeLong(fileSplitterFetch.nEndPos); LXby(|<j
} wn_
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output.close(); a9NuYYr,h
} x<!]#**;
catch(IOException e){e.printStackTrace ();} }15&<s
catch(Exception e){e.printStackTrace ();} jA:'P~`Hj
} p.(+L^-=
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//读取保存的下载信息(文件指针位置) [|*7"Q(
private void read_nPos() 6%6dzZ
{ o!+'<IQ'
try{ BRu}"29
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); m2(}$z3e
int nCount = input.readInt(); H*<E5^#dw
nStartPos = new long[nCount];
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nEndPos = new long[nCount]; _ti^i\8~
for(int i=0;i<nStartPos.length;i++) 7#UJ444b~
{ RZpjr !R
nStartPos = input.readLong(); hC<E4+5.,
nEndPos = input.readLong(); mpwh=
} {_\dwe9
input.close(); z@19gD#8
} 4|\M`T
catch(IOException e){e.printStackTrace ();} u|$HA>F[
catch(Exception e){e.printStackTrace ();} ShV_8F z
} Lhg
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private void processErrorCode(int nErrorCode) *<
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{ 5WfZd
System.err.println("Error Code : " + nErrorCode); CL5^>.}
} "-Nyf
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//停止文件下载 q*4@d)_&
public void siteStop() 'Tqusr>lPY
{ p%bMfi*T
bStop = true; `]GL3cIh:
for(int i=0;i<nStartPos.length;i++) %|JL=E}%|
fileSplitterFetch.splitterStop(); V :5aq.o!
};9/J3]m
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} A9ld9R
} 9{SzE /[
//负责部分文件的抓取 1l^[%0
**FileSplitterFetch.java v?3xWXX,
*/ o\Fv~^
package NetFox; W4nn)qBrh
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import java.io.*; IR2Qc6+{
import java.net.*; CcV@YST?
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public class FileSplitterFetch extends Thread { MoiRAO
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String sURL; //File URL ia
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long nStartPos; //File Snippet Start Position QjpJIw
long nEndPos; //File Snippet End Position _RzoXn{1e
int nThreadID; //Thread's ID Imzh`SI,
boolean bDownOver = false; //Downing is over a ge8I$*`@
boolean bStop = false; //Stop identical I=[0 9o
FileAccessI fileAccessI = null; //File Access interface JCZ&TK
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException dKDCJt]t
{ W>{&"
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this.sURL = sURL; >N`,
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this.nStartPos = nStart; c-.F{~
this.nEndPos = nEnd; "[z/\l8O
nThreadID = id; 3ErV" R4"$
fileAccessI = new FileAccessI(sName,nStartPos);//定位 N@'l:N'f4
} (A}c22qe
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public void run() {~g7&+9x*
{ Ae^4
while(nStartPos < nEndPos && !bStop) =7: }/&
{ P$ b5o
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try{ i8EKzW
URL url = new URL(sURL); 0@u{(m
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ~_ovQ4@
httpConnection.setRequestProperty("User-Agent","NetFox"); }p)a7xn}
String sProperty = "bytes="+nStartPos+"-"; :m'(8s8
httpConnection.setRequestProperty("RANGE",sProperty); Bv*VNfUm
Utility.log(sProperty); %%wngiz\
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InputStream input = httpConnection.getInputStream(); 9/&1lFKJ
//logResponseHead(httpConnection); RJT55Rv{
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byte[] b = new byte[1024]; *z~J ]
int nRead; 4 #lLC-k
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) &
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{ [5b[ztN%
nStartPos += fileAccessI.write(b,0,nRead); 3XbFg%8YG
//if(nThreadID == 1) Fghan.F
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); !HXsxNe
} >A6PH*x
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Utility.log("Thread " + nThreadID + " is over!"); )J[Ady^5
bDownOver = true; .'-t>(}v
//nPos = fileAccessI.write (b,0,nRead); vKkvB;F41
} [c=![*}/
catch(Exception e){e.printStackTrace ();} &XhxkN$8
} 0q1+5
} 5rA>2<\pQ
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//打印回应的头信息 `I|Y7GoUO
public void logResponseHead(HttpURLConnection con) fv>Jn`
{ * _,yK-et
for(int i=1;;i++) dftX$TS
{ `\BBdQ#bH
String header=con.getHeaderFieldKey(i); 6p,}?6^
if(header!=null) Fk`6
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//responseHeaders.put(header,httpConnection.getHeaderField(header)); :}v:=c k
Utility.log(header+" : "+con.getHeaderField(header)); c Ct5m
else hGUQdTNP
break; un,W{*s8*
} 8h|~>v
} ]HG>Og
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public void splitterStop() ZU9Rvtb KB
{ 8Tc:TaL
bStop = true; f+c{<fX
} L#_QrR6Sny
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} `-rtU
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/* 6HVGqx
**FileAccess.java z-S8s2.Fd
*//文件访问(定位,写) `3UvKqe
package NetFox; ]RW*3X
import java.io.*; <|a9r: [
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public class FileAccessI implements Serializable{ -r{]9v2j
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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 &G+:t)|S
RandomAccessFile oSavedFile; \FyHIs
long nPos; kr]_?B(r
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public FileAccessI() throws IOException C2
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{ `[f IK,
this("",0); bgmOX&`G
} |Gb~[6u
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public FileAccessI(String sName,long nPos) throws IOException As#/ln$nE
{ )|S!k\^A
oSavedFile = new RandomAccessFile(sName,"rw"); ~eGtoEY
this.nPos = nPos; Jz_`dLL^w
oSavedFile.seek(nPos); qI\B;&hr(
} V ;M'd@
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public synchronized int write(byte[] b,int nStart,int nLen) T:udw
{ N8]d0
int n = -1; SjU0Xb)[
try{ u O~MT7~[X
oSavedFile.write(b,nStart,nLen); N5fMMi(O
n = nLen; E`3[62C
} Z9PG7h
catch(IOException e) [i N}W5
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{ _5768G`P
e.printStackTrace (); `"E<%$|ZQy
} xTdh/}
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return n; Y<`uq'V
} Yg")/*!H
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} 2ISnWzq;
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/* qznd'^[
**SiteInfoBean.java ?$X1X`@
*/ 6imQjtI
package NetFox; e_CgZ
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public class SiteInfoBean { .AHww7
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private String sSiteURL; //Site's URL Y-:{a1/RKo
private String sFilePath; //Saved File's Path QW}N,j$
private String sFileName; //Saved File's Name 'd=B{7k@
private int nSplitter; //Count of Splited Downloading File &r!*Y&
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public SiteInfoBean() ^T/d34A;SP
{//nSplitter的缺省值为5 w#`E;fN'
//default value of nSplitter is 5 1C\[n(9
this("","","",5); <al/>7z'
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} 9mH/xP:y
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) PaYsn *{})
{ 5J8U] :Y)
sSiteURL= sURL; Qa=v }d-O
sFilePath = sPath; *H,vqs\}y
sFileName = sName; veh?oJi@
this.nSplitter = nSpiltter; *4F6U
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} '}NQ`\k
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public String getSSiteURL() F2RU7o'f.
{ |cCrLa2*-
return sSiteURL; Aaq!i*y
} x0_$,Tz@
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public void setSSiteURL(String value) o72G oUfs
{ \"@BZ.y
sSiteURL = value; DkGC+Dw
} &]Q\@;]Aq
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public String getSFilePath() V8.o}BWY
{ 8(c,b
return sFilePath; Mm+kG'Z!S
} 8 P=z"y
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public void setSFilePath(String value) t1)Qa(#]
{ D|p`~(
sFilePath = value; 2-*zevPiG=
} Jx8?x#}
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