/* V__|NVoOm
**SiteFileFetch.java AG3iKk??T
*/ m#\I&(l+
package NetFox; [9wuaw"~[Z
import java.io.*; Q"6:W2#v
import java.net.*; S2TyNZbQ
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public class SiteFileFetch extends Thread { DLigpid
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SiteInfoBean siteInfoBean = null; //文件信息Bean eSqKXmH[m
long[] nStartPos; //开始位置 +b =X~>vZ
long[] nEndPos; //结束位置 eucacXiZ
FileSplitterFetch[] fileSplitterFetch; //子线程对象 N(6Q`zs
long nFileLength; //文件长度 >1}RiOd3
boolean bFirst = true; //是否第一次取文件 4"om;+\
boolean bStop = false; //停止标志 88@" +2
File tmpFile; //文件下载的临时信息 w$XqxI/&
DataOutputStream output; //输出到文件的输出流 )p$a1\~m
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) _~l*p"PL<
public SiteFileFetch(SiteInfoBean bean) throws IOException ;p/%)WW
{ `X["Bgk$!T
siteInfoBean = bean; MO_-7,.y
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); W>+/N4
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 0eGz|J*7
if(tmpFile.exists ()) wM-I*<L>
{ 5~,/VV
bFirst = false; DOsQVdH
read_nPos(); ?~%Go
} agbG) t0
else 0^0Q0A
{ U#qs^f7R
nStartPos = new long[bean.getNSplitter()]; !Ojf9 6is
nEndPos = new long[bean.getNSplitter()]; (bX77 Xr
} ]O^C'GzZ
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} G1=/G
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public void run() ^$!H|
{ P^)J^{r
//获得文件长度 dcd9AW=
//分割文件 +Fk]hCL
//实例FileSplitterFetch {o."T/?d'
//启动FileSplitterFetch线程 iI]E%H}
//等待子线程返回 I+!?~]AUuq
try{ 5x2m]u
if(bFirst) N!{waPbPi
{ ^$D2fS
nFileLength = getFileSize(); h1(GzL%i_
if(nFileLength == -1) +o4W8f=Ga
{ ~+~^c|
System.err.println("File Length is not known!"); )B!64'|M
} F?!X<N{
else if(nFileLength == -2) 1.U9EuI
{ 1v?|n8
System.err.println("File is not access!"); @ptE&m
} S^,q{x*T
else &gr)U3w
{ O>M4%p
for(int i=0;i<nStartPos.length;i++) e8Y;~OAj[
{ <hv {,1p-r
nStartPos = (long)(i*(nFileLength/nStartPos.length)); aANzL
} !&f>,?wlP
for(int i=0;i<nEndPos.length-1;i++) (2l?~CaK
{ @hG]Gs[,o
nEndPos = nStartPos[i+1]; TwT@_~IM
} jgyXb5GY
nEndPos[nEndPos.length-1] = nFileLength; 6+iZJgwAy
} gz~)v\5D/
} &~
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//启动子线程 iiWm>yy
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; yQ/E0>Uj!
for(int i=0;i<nStartPos.length;i++) Q2 S!}A
{ ?kBX:(g
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), B=;pwX
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 5ieF8F%
nStartPos,nEndPos,i); OngUZMgdb
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ^rX5C2}G\D
fileSplitterFetch.start(); Yo^9Y@WDW
} fhp+Ep!0Y
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), VmbfwHRWb
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); R/|2s
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", +p\+15
nEndPos = " + nFileLength); DQ{"6-
// fileSplitterFetch[nPos.length-1].start(); @krh <T6|
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//等待子线程结束 xfFsW^w
//int count = 0; "~nUwW|=1
//是否结束while循环 Vgg'5o&.
boolean breakWhile = false; SU$%nK )
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while(!bStop) Frd` u.I
{ f8vWN
write_nPos(); c_Fz?R+f?K
Utility.sleep(500); 'X(Sn3
breakWhile = true; }P(<]UF
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for(int i=0;i<nStartPos.length;i++) DFvj
{ D:DtP6
if(!fileSplitterFetch.bDownOver) FC&841F
{ ` &{
breakWhile = false; /8Xd2-
break; s<b(@L 1
} 9_&N0>OF
} 0\tdxi
if(breakWhile) TMAart;<
break; 3zsjL=ta
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//count++; V=-hqo(
//if(count>4) .cCB,re
// siteStop(); +h?Rb3=S
} 8;+dlWp
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System.err.println("文件下载结束!"); f)9{D[InM^
} d:GAa
catch(Exception e){e.printStackTrace ();} m1{OaHxKh
} y-R:-K XH=
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//获得文件长度 %}ASll0uq
public long getFileSize() NxzRVsNF
{ ,Z aPY
int nFileLength = -1; Fb^f`UI
try{ VcpN
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URL url = new URL(siteInfoBean.getSSiteURL()); LP:U6 Z
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Ew$-,KC[
httpConnection.setRequestProperty("User-Agent","NetFox"); OtD!@GQ6
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int responseCode=httpConnection.getResponseCode(); $?Z-BD1
if(responseCode>=400) > a"4aYj
{ VU ,tCTXz
processErrorCode(responseCode); <cNg_ZZ;8
return -2; //-2 represent access is error gVU&Yl~/^
} rG"QK!R5
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String sHeader; jB -wJNP/
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for(int i=1;;i++) l>{+X )
{ (rB?@:zN
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); g'nN#O
//Utility.log(in.readLine()); wfY]J0l
sHeader=httpConnection.getHeaderFieldKey(i); y_A7CG"^
if(sHeader!=null) NI)q<@ju
{ a,~}G'U
if(sHeader.equals("Content-Length")) rwCjNky!
{ kO'_g1f<[
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); $]I",ef
break; e(~Y!:Q#O
} \h UE,^
} YdiXj |k+
else q+ )csgN
break; UukHz}(E
} !PuW6
} \r^*4P,,
catch(IOException e){e.printStackTrace ();} "u.4@^+i
catch(Exception e){e.printStackTrace ();} q A?j-H
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Utility.log(nFileLength); ptvM>zw'~g
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return nFileLength; +~cW0z
} r5(-c]E7
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//保存下载信息(文件指针位置) 1 6G/'Hb
private void write_nPos() I15g G.)
{ L; f
try{ ]id5jVY
output = new DataOutputStream(new FileOutputStream(tmpFile)); GFmVR2z_+
output.writeInt(nStartPos.length); 8"2X 8C8
for(int i=0;i<nStartPos.length;i++) elw}(l<F
{ eq(Xzh
// output.writeLong(nPos); =h/0k
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output.writeLong(fileSplitterFetch.nStartPos); u>I;Cir4
output.writeLong(fileSplitterFetch.nEndPos); @o6^"
} 53jtwklA
output.close(); L.1pO2zPe
} Bp:i[9w
catch(IOException e){e.printStackTrace ();} a eo/4
catch(Exception e){e.printStackTrace ();} BR[f{)a5
} b*@y/ e\u`
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//读取保存的下载信息(文件指针位置) .f~x*@
private void read_nPos() q9mYhT/Im
{ p/GYfa
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try{ AroXf#.
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 1XvB,DhJ
int nCount = input.readInt(); ]&kzIxh
nStartPos = new long[nCount]; jf'#2-
nEndPos = new long[nCount]; BoMf#l.3B
for(int i=0;i<nStartPos.length;i++) KXy|Si8w
{ U3zwC5}BN
nStartPos = input.readLong(); a|\ZC\(xI
nEndPos = input.readLong(); p"XQJUuD
} .Lc<1s
input.close(); i'}Z>g5D
} (HZzA7eph
catch(IOException e){e.printStackTrace ();} !`-/E']/
catch(Exception e){e.printStackTrace ();} F6xQ`T|
} m+Bt9|d
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private void processErrorCode(int nErrorCode) XCTee
{ I!;LT+b
System.err.println("Error Code : " + nErrorCode); hiN6]jL|O
} RO1xcCp
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//停止文件下载 e2?7>?
public void siteStop() !SFF 79$c
{ <Hq|<^_K
bStop = true; X(;,-7Jw
for(int i=0;i<nStartPos.length;i++) T;u>]"S
fileSplitterFetch.splitterStop(); BEv>?T
0
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} C$1}c[
} k^IC"pUc
//负责部分文件的抓取 Jm+hDZrW
**FileSplitterFetch.java ,&\uuD&.@
*/ 6jRUkI-!
package NetFox; 1x^(vn#=
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import java.io.*; D%0GXUp
import java.net.*; W&U
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public class FileSplitterFetch extends Thread { <R.5Ma
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String sURL; //File URL LI&+5`
long nStartPos; //File Snippet Start Position o!3 -=<^
long nEndPos; //File Snippet End Position ZMHb
int nThreadID; //Thread's ID :(|;J<R%_
boolean bDownOver = false; //Downing is over Ba\l`$%X
boolean bStop = false; //Stop identical
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FileAccessI fileAccessI = null; //File Access interface s9wcZO
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException pOCLyM9c
{ ueiXY|
this.sURL = sURL; )k.[Ve
this.nStartPos = nStart; 'wd-!aZAd
this.nEndPos = nEnd; ~7W?W<
nThreadID = id; IQS:tL/
fileAccessI = new FileAccessI(sName,nStartPos);//定位 N%A[}Y0;MW
} \V|\u= @H
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public void run() Wh:SZa|
{ u(7PtmV[!
while(nStartPos < nEndPos && !bStop) 5_@8g+~
{ McgTTM;E
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try{ !po8[fz~x
URL url = new URL(sURL); HXTBxh
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 8"4&IX
httpConnection.setRequestProperty("User-Agent","NetFox"); ey@]B5
String sProperty = "bytes="+nStartPos+"-"; 3%]%c6
httpConnection.setRequestProperty("RANGE",sProperty); 9=j"kXFf
Utility.log(sProperty); 2NLD7A
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InputStream input = httpConnection.getInputStream(); [<Wo7G1s
//logResponseHead(httpConnection); lCDu,r;\
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byte[] b = new byte[1024]; +s:!\(BM
int nRead; -v4kW0G
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) a
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{ ngprTMO$&
nStartPos += fileAccessI.write(b,0,nRead); ,%#FK|
//if(nThreadID == 1) Ji_3*(
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Bf$YwoZov
} O+Fu zCWj
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){|Bh3XV
Utility.log("Thread " + nThreadID + " is over!"); *.0}3
bDownOver = true; 1MH[-=[Q
//nPos = fileAccessI.write (b,0,nRead); {H+~4XG
} >;eWgQ6V
catch(Exception e){e.printStackTrace ();} aU,Zjm7fp
} (c ?OcwTH
} (PjC]`FK
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//打印回应的头信息 c
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public void logResponseHead(HttpURLConnection con) gnW`|-:\
{ <=A1d\
for(int i=1;;i++) 0Zp)
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{ t@[&8j2B>
String header=con.getHeaderFieldKey(i); P#(BdKjM
if(header!=null) ~ztsR;iL
//responseHeaders.put(header,httpConnection.getHeaderField(header)); =B g
Utility.log(header+" : "+con.getHeaderField(header)); a9C8Q
l
else Ah,X?0+
break; GsG.9nd
} !rzbm&@
} 9kmkF,
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public void splitterStop() XBE+O7
{ A*jU&3#
bStop = true; j:# wt70
} `9BZ))Pg
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} nFU'DZ
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@:\Iw"P
/* U|QLc
**FileAccess.java 4.:2!Q
*//文件访问(定位,写) &<}vs`W
package NetFox; F+mn d,3
import java.io.*; hI.@!$~=
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public class FileAccessI implements Serializable{ FES_:?.0
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//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 h+)XLs
RandomAccessFile oSavedFile; ' NyIy:
long nPos; (_h<<`@B
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public FileAccessI() throws IOException [IT*>;b+?
{ u;f${Wn'3
this("",0); 22aS
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} 6-8,qk
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public FileAccessI(String sName,long nPos) throws IOException \c1u$'| v
{ bBwQ1,c$
oSavedFile = new RandomAccessFile(sName,"rw"); iV#sMJN9
this.nPos = nPos; dU`kJ,=Z
oSavedFile.seek(nPos); Ws%@SK
} Y+vG]?D
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public synchronized int write(byte[] b,int nStart,int nLen) 0c6b_%Rd
{ KE>|,Ur
int n = -1; v_M-:e3`
try{ 1iNq|~
oSavedFile.write(b,nStart,nLen); Vwxb6,}Z
n = nLen; P2la/jN
} {m%]`0
catch(IOException e) f793yCiG
{ zh8\
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e.printStackTrace (); 9e5XS\
} je_:hDr
= BcKWC
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return n; jSi\/(E
} =.T50~+M
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} ?'>pfU
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/* +H"[WZ5
**SiteInfoBean.java jQ>~
*/ $K& #R-
package NetFox; '" MT$MrT
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public class SiteInfoBean { {`RCh]W
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private String sSiteURL; //Site's URL m9~cQ!m
private String sFilePath; //Saved File's Path 6:\0=k5
private String sFileName; //Saved File's Name PB[Y^q
private int nSplitter; //Count of Splited Downloading File *vFXe_.
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public SiteInfoBean() 3m;*gOLk6
{//nSplitter的缺省值为5 'xK ,|U
//default value of nSplitter is 5 {&u`d.Lk2p
this("","","",5); E^ub8
} 0c{-$K}
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) AFM Ip^F
{ dd?ZQ:n
sSiteURL= sURL; _P].Z8
sFilePath = sPath; IA6,P>}N
sFileName = sName; qoZUX3{
this.nSplitter = nSpiltter; 6h5DvSO
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} G~.bi<(v
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public String getSSiteURL() 6gy;Xg
{ ta;q{3fe
return sSiteURL; GkU]>8E'"
} :o37 V!
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public void setSSiteURL(String value) QV%,s!_b
{ 1r:i'cWh
sSiteURL = value; P<E!ix
} =|j~*6Hd
ta
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public String getSFilePath() tNbL)
{ 506AvD
return sFilePath; B5R/GV
} <>l!
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public void setSFilePath(String value) AQ<2 "s
{ 'uBagd>*
sFilePath = value; W{!Slf
} gH
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public String getSFileName() EJByYk
{ M[:},?ah0
return sFileName; [&MhAzF
} e$Npo<u
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public void setSFileName(String value) b^dBX
{ 9zKbzT]
sFileName = value; =5kTzH.
} IpYw<2'
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public int getNSplitter() #Zq[.9!q{
{
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return nSplitter; yv+DM`0
} o|njgmF;\
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public void setNSplitter(int nCount) m&I5~kD
{ q% pjY
nSplitter = nCount; 0(h'ZV
} egHvI&w"o
} n[c/L8j
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/* ~=Q|EhF5
**Utility.java m2r%m
y
*/ 41s [p56+@
package NetFox; *nYb9.T]i
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public class Utility { N1l&$#Fr!s
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public Utility() wf&1,t3Bgn
{ <