/* 4e7-0}0
**SiteFileFetch.java
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*/ V)k4:H
package NetFox; G>}255qY
import java.io.*; vn8aFA
import java.net.*; 1R%.p7@5QU
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public class SiteFileFetch extends Thread { t!l&iVWs
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SiteInfoBean siteInfoBean = null; //文件信息Bean a58H9w"u)
long[] nStartPos; //开始位置 &6!)jIWJ
long[] nEndPos; //结束位置 0Mm)`!TLSW
FileSplitterFetch[] fileSplitterFetch; //子线程对象 T?0eVvM
long nFileLength; //文件长度 h(dvZ=
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boolean bFirst = true; //是否第一次取文件 PFjL1=7I
boolean bStop = false; //停止标志 9.-S(ZO
File tmpFile; //文件下载的临时信息 2]*OQb#O6e
DataOutputStream output; //输出到文件的输出流 zC!t;*8a
\gaw6S>n}
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) /{_:{G!Q0
public SiteFileFetch(SiteInfoBean bean) throws IOException IEi^kJflU
{ lUZ+YD4
siteInfoBean = bean; (?c"$|^J
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); T!#GW/?
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); J/$&NWF
if(tmpFile.exists ()) 7JH6A'&
{ DyQy^G'%l
bFirst = false; #c!lS<z
read_nPos(); 4+8@`f>s
} bI1N@=
else Wac&b
{ _B<X`L
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nStartPos = new long[bean.getNSplitter()]; wP@(?z
nEndPos = new long[bean.getNSplitter()]; vk^xT
} r,p%U!S<hV
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} ~$^XP.a.
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public void run() h2R::/2.
{ /U9"wvg
//获得文件长度 :$c
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//分割文件 ;.980+i1
//实例FileSplitterFetch ;e *!S}C,
//启动FileSplitterFetch线程 7!E,V:bt'
//等待子线程返回 } q8ASYNc
try{ 4tBYR9|
if(bFirst) =7eV/3
{ "chDg(jMZ
nFileLength = getFileSize(); Wne@<+mX
if(nFileLength == -1) ^1.By^
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{ S,he6zS
System.err.println("File Length is not known!"); {`@G+JV~Jw
} 4kx
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else if(nFileLength == -2) j\M?~=*w
{ L!xi
System.err.println("File is not access!"); '`Hr}
}
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else <LiPEo.R
{ +M/%+l
for(int i=0;i<nStartPos.length;i++) f@!.mDm]
{ \9T7A&
nStartPos = (long)(i*(nFileLength/nStartPos.length));
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} 3Y$GsN4ln
for(int i=0;i<nEndPos.length-1;i++) #H~64/
{ M\BRcz
nEndPos = nStartPos[i+1]; 0g8NHkM:2a
} y:uE3Apm
nEndPos[nEndPos.length-1] = nFileLength; M_DwUS1?
} +NUG
} abVmkdP_s
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//启动子线程 f!X[c?Xy"
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; !4+<<(B=E
for(int i=0;i<nStartPos.length;i++) CrTw@AW9)
{ p!%pP}I
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), G3T]`Atf
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), -QNh
nStartPos,nEndPos,i); ~k5W@`"W
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); YoFxW5by
fileSplitterFetch.start(); Q7CsJzk~)
} Q"#J6@
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), t]G:L}AOl
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); X:{!n({r=
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", @H8EWTZ
nEndPos = " + nFileLength); seJ^s@H5l
// fileSplitterFetch[nPos.length-1].start(); {'H(g[k
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//等待子线程结束 aN3;`~{9
//int count = 0; HGg@ _9tW
//是否结束while循环 )4 ;`^]F
boolean breakWhile = false; BiBOr}ZQ
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while(!bStop) e*1_ 8I#2
{ R4d=S4i
write_nPos(); Tlr v={
Utility.sleep(500); Xch~
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breakWhile = true; .=;
;
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for(int i=0;i<nStartPos.length;i++) K*d Cc}:`
{ @C aG9]
if(!fileSplitterFetch.bDownOver) G3v5KmT
{ %;!.n{X
breakWhile = false; Y_P!B^z3
break; |y!A&d=xYn
} mX|ojZ
} 7{Wny&[0
if(breakWhile) dAj$1Ke
break; ]]yO1x$Kk
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//count++;
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//if(count>4) TD_Oo-+\
// siteStop(); *Pg2c(Vg
} hE-M$LmN@
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System.err.println("文件下载结束!"); 1h5 Akq
} 5F"jkd+
catch(Exception e){e.printStackTrace ();} 9N3eN
} d'sZxU
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//获得文件长度 kU`r)=1"
public long getFileSize() 2J;g{95z
{ /Ci<xmP
int nFileLength = -1; ;A[Q2(w+
try{ $ME)#(
URL url = new URL(siteInfoBean.getSSiteURL()); !|>"o7
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 0m ? )ROaJ
httpConnection.setRequestProperty("User-Agent","NetFox"); :BTq!>s
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int responseCode=httpConnection.getResponseCode(); ml$o5&sN
if(responseCode>=400) k VQ\1!
{ rrv%~giU
processErrorCode(responseCode); vfo~27T{(
return -2; //-2 represent access is error rVsJ`+L
} Af{"pzY
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String sHeader; cN9t{.m
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for(int i=1;;i++) CJI~_3+K
{ ;A!BVq
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 7 xa>
//Utility.log(in.readLine()); Q NVa?'0"Y
sHeader=httpConnection.getHeaderFieldKey(i); 8dyg1F
if(sHeader!=null) >&k-'`Nw
{ {]|J5Dgfe
if(sHeader.equals("Content-Length")) 0SPk|kr
{ dcT80sOC
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); */DO ex"y
break; {1
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} 0qT%!ku&
} Wo,?+I
else 29q _BR *:
break; ~F7gP{r
} ^G-@06 /!
} dC4'{n|7
catch(IOException e){e.printStackTrace ();} 4xJQ!>6
catch(Exception e){e.printStackTrace ();} >yh2Lri
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Utility.log(nFileLength); SK.: Q5:
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return nFileLength; BL58] P84
} xAP+FWyV
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//保存下载信息(文件指针位置) h `.& f
private void write_nPos() y18Y:)DkL
{ &G$Ucc
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try{ KCDE{za
output = new DataOutputStream(new FileOutputStream(tmpFile)); P
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output.writeInt(nStartPos.length); B,fo(kG
for(int i=0;i<nStartPos.length;i++) ^y4Z+Gu[
{ Vs{|xG7WD
// output.writeLong(nPos); FNId;
output.writeLong(fileSplitterFetch.nStartPos); *k>n<p3dd
output.writeLong(fileSplitterFetch.nEndPos); !$>R j
} 9JKEw
output.close(); $,fX:x
} cPc</[x[W
catch(IOException e){e.printStackTrace ();} 5 + MS^H
catch(Exception e){e.printStackTrace ();} ~.lPEA %%
} ;P&OX5~V
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//读取保存的下载信息(文件指针位置) BJo*'US-Q
private void read_nPos() R_S.tT!
{ ib791
try{ xFg>SJ7]
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); u,Kly<0j
int nCount = input.readInt(); S?BG_J6A7
nStartPos = new long[nCount]; 26x[X.C:
nEndPos = new long[nCount]; 1 I",L&S1
for(int i=0;i<nStartPos.length;i++) {P#|zp 4C{
{ U\!X,a*ts{
nStartPos = input.readLong(); CQDkFQq-dq
nEndPos = input.readLong(); -1ub^feJ,
} n>U5R_T
input.close(); 6/dI6C!
} Tkgs]q79
catch(IOException e){e.printStackTrace ();} IRqy%@)
catch(Exception e){e.printStackTrace ();} 42ivT_H
} iM3V=&)
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private void processErrorCode(int nErrorCode) DrK{}uM
{ 8BNi1Qn$
System.err.println("Error Code : " + nErrorCode); I ?.^ho
} LvYB7<zk>
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//停止文件下载 5rZ
public void siteStop() F`]2O:[
{ WQO) =n
bStop = true; G9<X_
for(int i=0;i<nStartPos.length;i++) /fV;^=:8c
fileSplitterFetch.splitterStop(); ?#UO./ "
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} vd4ytC
} PXNh&N
//负责部分文件的抓取 )q3p-)@kQ
**FileSplitterFetch.java 6<(.4a?
*/ fXQNHZ|4
package NetFox; }U5yQ%N
'K,:j 388
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import java.io.*; 8E]F$.6U
import java.net.*; "@,}p\
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public class FileSplitterFetch extends Thread { rguC p}r
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String sURL; //File URL h>OfOx/{q9
long nStartPos; //File Snippet Start Position 85xR2 <:
long nEndPos; //File Snippet End Position f^XOUh
int nThreadID; //Thread's ID {%6`!WW[
boolean bDownOver = false; //Downing is over Ck7uJI<x
boolean bStop = false; //Stop identical pBA7,z"`mP
FileAccessI fileAccessI = null; //File Access interface ~Vjl7G\7i
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException x{/g(r={}
{ 5iydZ
this.sURL = sURL;
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this.nStartPos = nStart; ]+:^W^bs:
this.nEndPos = nEnd; 8StgsM
nThreadID = id; _/5H l`
fileAccessI = new FileAccessI(sName,nStartPos);//定位 Pw!MS5=r
} Otm0(+YB7
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public void run() 9|CN8x-
{ LOV)3{m
while(nStartPos < nEndPos && !bStop) l3F6AlPql
{ Jz
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try{ &m:uO^-D
URL url = new URL(sURL); /{--+
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); =^ 50FI|
httpConnection.setRequestProperty("User-Agent","NetFox"); <1\Nb{5
String sProperty = "bytes="+nStartPos+"-"; *N'p~LJ
httpConnection.setRequestProperty("RANGE",sProperty); "d5n \@[t
Utility.log(sProperty); OMg<V
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InputStream input = httpConnection.getInputStream(); ThbGQ"/
//logResponseHead(httpConnection); zi*R`;_`,
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byte[] b = new byte[1024]; 2Ny"O.0h
int nRead; ,>+p-M8ZL
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) WKa~[j|-K
{ R/>@+
nStartPos += fileAccessI.write(b,0,nRead); PxkOT*
//if(nThreadID == 1) GD_hhDyD
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 2{G:=U
} 2n"V}p>8i#
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Utility.log("Thread " + nThreadID + " is over!"); t"'7m^j
bDownOver = true; LsS
//nPos = fileAccessI.write (b,0,nRead); R2]Z kg
} .O}%
catch(Exception e){e.printStackTrace ();} dP]\Jo=Yh
} `W/>XZl+t
} CDR@
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//打印回应的头信息 $F+ L Ds
public void logResponseHead(HttpURLConnection con) vJOw]cwq
{ XtSkh] #z!
for(int i=1;;i++) uurh??R
{ !6>~?gNd
String header=con.getHeaderFieldKey(i); Hm'=aff6A
if(header!=null) \WB<86+z
//responseHeaders.put(header,httpConnection.getHeaderField(header)); !AfHk|
Utility.log(header+" : "+con.getHeaderField(header)); @;?p&.W`D
else oij}'|/Jc
break; (uZ&V7l
} wLJ:\_Jaf
} "J8vjr1/
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public void splitterStop() 7f!YoW;1
{ ^mO~W!"
bStop = true; V"G*N<q
} WQL\y3f5
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} %
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/* [dIXR
**FileAccess.java WE.{p>
*//文件访问(定位,写) aa#Y=%^
package NetFox; Jx7C'~,J
import java.io.*; EZ$>.iy{
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public class FileAccessI implements Serializable{ A5R<p+t6
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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 8hJ%JEzga
RandomAccessFile oSavedFile; RA'M8:$
long nPos; $jI3VB
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public FileAccessI() throws IOException m\r@@!
{ ![_*(8v}S
this("",0); \T :i{.i
} 6BbGA*%{
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public FileAccessI(String sName,long nPos) throws IOException wFsyD3
{ ';jYOVe
oSavedFile = new RandomAccessFile(sName,"rw"); >TnTnF WX
this.nPos = nPos; Be=u&T:~
oSavedFile.seek(nPos); X"e5Y!:M-
} dP<=BcH>f
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public synchronized int write(byte[] b,int nStart,int nLen) T;y>>_,
{ >dG;w6y'
int n = -1; =Og)q$AL
try{ B43HNs
oSavedFile.write(b,nStart,nLen); _%!c+f7
n = nLen; *@v)d[z_
} S^>,~R.TX
catch(IOException e) MLje4
{ ke]Lw
e.printStackTrace (); rrqR}}l
} 4Thn])%I
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return n; n%C>E.Tq
} NS%xTLow-
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} F6OpN"UM'
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/* Ba*,-i3ZK
**SiteInfoBean.java m4&h>9. 8
*/ gL[yA?GoM
package NetFox; !GLz)#SBl
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public class SiteInfoBean { o-{[|/)Tk
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private String sSiteURL; //Site's URL =/Mq 5.
private String sFilePath; //Saved File's Path -pa )K"z
private String sFileName; //Saved File's Name ?_$=l1vf
private int nSplitter; //Count of Splited Downloading File y?m/*hh`
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public SiteInfoBean() 8U>B~9:JO
{//nSplitter的缺省值为5 L[H5NUG!
//default value of nSplitter is 5 KJ=6 n%6
this("","","",5); ^xHTW g%9
} v'qG26
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) GCX G/k?w:
{ E4W -hq~
sSiteURL= sURL; 2FF4W54I
sFilePath = sPath; 8:>1F,
sFileName = sName; 8x8uo
this.nSplitter = nSpiltter; YN2sdG
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} `m>*d!h=
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public String getSSiteURL() oA7;.:3
{ V7[zAq
return sSiteURL; LbG_ z =A
} J'fQW<T4wU
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public void setSSiteURL(String value) #u"k~La
{ j>x-"9N
sSiteURL = value; T[uiPs/xD
} !z<%GQ CT
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public String getSFilePath() 2?,EzBeal
{ "D'B3; uWK
return sFilePath; I8/DR z$A
} n;U`m$vL%
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public void setSFilePath(String value) /D^"X
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{ :GW&O /Yo
sFilePath = value; 1_
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} %1O[i4s:-
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public String getSFileName() J-)
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{ \XM^oE#G
return sFileName; ZAUQJS 91E
} 92d6U2T4&
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public void setSFileName(String value) wUQw!%?>
{ AUNQA
sFileName = value; $m+sNEAa
} UIAj]
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public int getNSplitter() [],1lRYI9_
{ 13%t"-@bh
return nSplitter; ^;maotHn
} MpqZH{:?G
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public void setNSplitter(int nCount) ;VNMD 6H
{ OhmQ,
nSplitter = nCount; 199]W Hc
} <