/* 'YbE%i}
**SiteFileFetch.java gzW{h0iRr
*/ ^liW*F"UY
package NetFox; |tLD^`bt
import java.io.*; 3q@JhB
import java.net.*; (ToD
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public class SiteFileFetch extends Thread { :1bDkoK
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SiteInfoBean siteInfoBean = null; //文件信息Bean (w(k*b/
long[] nStartPos; //开始位置 fsnZHL}=n
long[] nEndPos; //结束位置 J
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FileSplitterFetch[] fileSplitterFetch; //子线程对象 [Ne'2z
long nFileLength; //文件长度 9Nv?j=*$
boolean bFirst = true; //是否第一次取文件 X$P(8'[9A
boolean bStop = false; //停止标志 [[N${ C
File tmpFile; //文件下载的临时信息 ~mK+Q%G5
DataOutputStream output; //输出到文件的输出流 Gp)J[8j
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) Nx*1m
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public SiteFileFetch(SiteInfoBean bean) throws IOException q*a~9.i@
{ }ksp(.}G
siteInfoBean = bean; ;g2UIb?{6
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); +7_U(|gO
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 0fUsERr1*
if(tmpFile.exists ()) B~&}Mv
{ *|CvK&7
bFirst = false; D8Mq '$-
read_nPos(); ,PJC FQMR
} ~MYE8xrId
else o"A)t=
{ P-8QXDdr
nStartPos = new long[bean.getNSplitter()]; LH`2Y,E
nEndPos = new long[bean.getNSplitter()]; nf&5oE^
} OpIeo+^X*
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} vfm Y>nr
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public void run() w5/6+@}
{ [>3dhj[;
//获得文件长度 b9-3
//分割文件 Y}Y~?kE>M|
//实例FileSplitterFetch lHTr7uF(
//启动FileSplitterFetch线程 zh\"sxL
//等待子线程返回 9v3n4=gc
try{ 7kT X
if(bFirst) tuuwoiQ*`
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nFileLength = getFileSize(); D~M R)z_p~
if(nFileLength == -1) Vw`Q:qo0:b
{ E m +&I
System.err.println("File Length is not known!"); aX|(%1r
} "sY}@Q7
else if(nFileLength == -2) @qx$b~%
{ ~.0'v [N
System.err.println("File is not access!"); &o1k_!25
} V*Xr}FE
else )"6"g9A
{ 1cRF0MI
for(int i=0;i<nStartPos.length;i++) e+VE FWz
{ h9iQn<lp4.
nStartPos = (long)(i*(nFileLength/nStartPos.length));
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} R?- zJ ;
for(int i=0;i<nEndPos.length-1;i++) =#<bB)59
{ X{ 6a
nEndPos = nStartPos[i+1]; BB(v,W
} $4)L~g|
nEndPos[nEndPos.length-1] = nFileLength; r=AA
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} hk
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//启动子线程 C=cn.CX
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ]?oJxW.
for(int i=0;i<nStartPos.length;i++) e-\/1N84
{ s| Q1;%Tj
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), *n[B Bz
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), c813NHW
nStartPos,nEndPos,i); Z'}%Mkm`i}
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Qc PU{#6
fileSplitterFetch.start(); NPM2qL9&J
} ,\aLv
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), SB .=x
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); }Ya! [tX
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 0)
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nEndPos = " + nFileLength); imAOYEH7}
// fileSplitterFetch[nPos.length-1].start(); &}pF6eIar
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//等待子线程结束 M_2>b:#A*
//int count = 0; "Ehh9 m1&
//是否结束while循环 DBLM0*B
boolean breakWhile = false; zpeCT3Q5O
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while(!bStop) gG}H5uN
{ E'(nJ
write_nPos(); ZU+_nWnl
Utility.sleep(500); /;1O9HJa
breakWhile = true; Hz==,NR-W
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for(int i=0;i<nStartPos.length;i++) _G'A]O/BZD
{ 6KXW]a `
if(!fileSplitterFetch.bDownOver) c14d0x{
{ B
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breakWhile = false; <hTHY E=
break; r3-<~k-
} PB5h5eX
} "Jg.)1Jw
if(breakWhile) H270)Cwn+
break; k_zn>aR$F
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//count++; :M f8q!Q'
//if(count>4) v2p0EOS
// siteStop(); n"D` =
} [m6+I9
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System.err.println("文件下载结束!"); Di4GaKa/
} 5;XYF0
catch(Exception e){e.printStackTrace ();} ED" fi$
} XuHR
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//获得文件长度 !cM<&3/
public long getFileSize() "19#{yX4
{ Y Q.Xl_
int nFileLength = -1; lz36;Fp
try{ 7DoU7I\u
URL url = new URL(siteInfoBean.getSSiteURL()); |0}7/^
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ?_A[E]/H
httpConnection.setRequestProperty("User-Agent","NetFox"); d!Gy#<H
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int responseCode=httpConnection.getResponseCode(); ;Oqf{em];
if(responseCode>=400) ']+!i a
{ CmBgay
processErrorCode(responseCode); >P\eHR,{-
return -2; //-2 represent access is error 1TR+p? "
} |B*B>P#
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String sHeader; YZSQOLN{
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for(int i=1;;i++) e.%I#rNI
{ ~9yKMUf
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ^,AE;ZT7
//Utility.log(in.readLine()); Q@>1z*'I
sHeader=httpConnection.getHeaderFieldKey(i); C<I?4WM
if(sHeader!=null) Qzo -Yw`=
{ d^!k{Qx'
if(sHeader.equals("Content-Length")) I}0? d
{ !k*B-@F
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); _5~|z$GW
break; _X;,,VEV!
} ZeU){CB
} wCR! bZ w
else ecoI-@CAI
break; 8 sc2r
} YGLq~A
} v~T)g"_|
catch(IOException e){e.printStackTrace ();} i$@xb_
catch(Exception e){e.printStackTrace ();} D6&P9e_5
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Utility.log(nFileLength); fDplYn#
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return nFileLength; HR8YPU5
} I
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//保存下载信息(文件指针位置) "5
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private void write_nPos() sCzpNJ"8
{ Zy;jp*Q
try{ ?QJx!'Y,p
output = new DataOutputStream(new FileOutputStream(tmpFile)); )j~{P
output.writeInt(nStartPos.length); K{/i2^4
for(int i=0;i<nStartPos.length;i++) 8~R.iqLoX
{ p#]9^oA
// output.writeLong(nPos); knG:6tQ
output.writeLong(fileSplitterFetch.nStartPos); O TlqJ
output.writeLong(fileSplitterFetch.nEndPos); oST)E5X;7
} i7r)9^y
output.close(); 8Nyz{T[
} 'iZwM>l\
catch(IOException e){e.printStackTrace ();} R3lZ|rxv:
catch(Exception e){e.printStackTrace ();} JQ0Z%;"
} [7gz?9VyLF
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//读取保存的下载信息(文件指针位置) JmK
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private void read_nPos() %M'`K
{ { >izfG,\
try{ g_P98_2f.k
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); y'odn ;
int nCount = input.readInt(); mhhc}dS(H
nStartPos = new long[nCount]; N~CQh=<
nEndPos = new long[nCount]; |^UQVNJ
for(int i=0;i<nStartPos.length;i++) JWg.0d$hM
{ fg#e*7Odn
nStartPos = input.readLong(); uKM` umE
nEndPos = input.readLong(); {S9gOg
} 3?"gfw W
input.close(); iBbaHU*V
} $3>Rw/,
catch(IOException e){e.printStackTrace ();} %po;ih$jr*
catch(Exception e){e.printStackTrace ();} S}U_uZ$b
} Y 'X!T8
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private void processErrorCode(int nErrorCode) <@ ts[p.
{ >W-xDzJry
System.err.println("Error Code : " + nErrorCode); mkyYs[
} ^$O(oE(D
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//停止文件下载 Bl6I@w
public void siteStop() s-Yu(X2
{ uchQv]VB
bStop = true; T3
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for(int i=0;i<nStartPos.length;i++) !w%c=V]tV
fileSplitterFetch.splitterStop(); 8gE p5
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} K\xM%O?
} gsM$VaF(
//负责部分文件的抓取 T$2A2gb`
**FileSplitterFetch.java K3
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*/ x
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package NetFox; >\pF5a`
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import java.io.*; x+6z9{O
import java.net.*; 'h6G"=+
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public class FileSplitterFetch extends Thread { :'ZR!w
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String sURL; //File URL 3T]cDVQ_
long nStartPos; //File Snippet Start Position y4p"LD5%^
long nEndPos; //File Snippet End Position 44P [P{y
int nThreadID; //Thread's ID n5A|Zjk;
boolean bDownOver = false; //Downing is over oowofi(E
boolean bStop = false; //Stop identical {%>~
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FileAccessI fileAccessI = null; //File Access interface gE@Pb
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException (9aOET>GG
{ 3Q62H+MC
this.sURL = sURL; B\rY\
this.nStartPos = nStart; jJ<&!=
this.nEndPos = nEnd; '\8YH+%It
nThreadID = id; [Ca''JqrA
fileAccessI = new FileAccessI(sName,nStartPos);//定位 l6WEx
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} DIQ30(MS
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public void run() L7rr/D
{ dba_(I~y
while(nStartPos < nEndPos && !bStop) ['\R4H!x
{ 6q>iPK Jt
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try{ iC iKr aW
URL url = new URL(sURL); Y_y!$jd(N
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); iY@}Q "
httpConnection.setRequestProperty("User-Agent","NetFox"); CXoiA"P
String sProperty = "bytes="+nStartPos+"-"; WQVU 82b*
httpConnection.setRequestProperty("RANGE",sProperty); l
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Utility.log(sProperty); 3
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InputStream input = httpConnection.getInputStream(); Q!IqvmO
//logResponseHead(httpConnection); @(6i 1Iwu9
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byte[] b = new byte[1024]; xu-bn
int nRead; RE4#a2
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) MhE".ZRd
{ 7oIHp_Zq
nStartPos += fileAccessI.write(b,0,nRead); "u~` ZV(
//if(nThreadID == 1) k^K76m B
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); [>p!*%m
} #| gh
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Utility.log("Thread " + nThreadID + " is over!"); PuZzl%i
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bDownOver = true; mpwh=
//nPos = fileAccessI.write (b,0,nRead); ;t9_*)[
} b}Im>n!
catch(Exception e){e.printStackTrace ();} R1Rk00Ow:
} +[n#{;]<
} R'B_YKHBY
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//打印回应的头信息 X~o;jJC
public void logResponseHead(HttpURLConnection con) 'NjeF6
{ &DYC3*)Jih
for(int i=1;;i++) ~0-)S@
{ pl,XS6mB
String header=con.getHeaderFieldKey(i); j&S.k
if(header!=null) 16I[z+RG
//responseHeaders.put(header,httpConnection.getHeaderField(header)); 9&^5!R8
Utility.log(header+" : "+con.getHeaderField(header)); yCkc3s|DA;
else -9+$z|K
break; e&ZTRgYdi
} a[zVC)N0
} 525^/d6v
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public void splitterStop() Z)(#D($-
{ jYAm}_?No
bStop = true; ZWuNl!l>
} 9CwtBil<#g
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} G1zP^ogk
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/* bY,dWNS:
**FileAccess.java UHfE.mTjM
*//文件访问(定位,写) G;/>
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package NetFox; +[i r7?Y.
import java.io.*; l>i:M#z&
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public class FileAccessI implements Serializable{ 9$[MM*r
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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 {s6#h #U
RandomAccessFile oSavedFile; rW O#h{
long nPos; gV:0&g\v
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public FileAccessI() throws IOException $'!n4}$}
{ ;&?ITV
this("",0); (<OmYnm
} T51oNO%^
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public FileAccessI(String sName,long nPos) throws IOException M,{; xf
{ 0$yHO2 f
oSavedFile = new RandomAccessFile(sName,"rw"); Ae^4
this.nPos = nPos; >U4bK^/Bp
oSavedFile.seek(nPos); n@C#,v#^0
} L4u.cHJ}0
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public synchronized int write(byte[] b,int nStart,int nLen) $'#}f?
{ R*ex!u60M
int n = -1; wc}x
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try{ RJT55Rv{
oSavedFile.write(b,nStart,nLen); V0#E7u`4
n = nLen; 0}kvuuR
} JiA1yt
catch(IOException e) j~;y~Cx?
{ EjEXev<]
e.printStackTrace (); xAn|OSe
} Ia^/^>
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return n; 5':j=KQE_
} geqx":gpx9
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} [R~@#I P!
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/* /cZcfCW
**SiteInfoBean.java aJ]t1
*/ oJ=u
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package NetFox; ydzvjp=
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public class SiteInfoBean {
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private String sSiteURL; //Site's URL U[@B63];0
private String sFilePath; //Saved File's Path ;q<:iaY9
private String sFileName; //Saved File's Name CTX%~1_`O
private int nSplitter; //Count of Splited Downloading File ].gC9@C:$i
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public SiteInfoBean() @c,=c+-
{//nSplitter的缺省值为5 xz/G$7q7
//default value of nSplitter is 5 5pE@Ww
this("","","",5); Nn5sD3z#
} Oo%%f+
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) <,nd]a
{ 7^h*rL9
sSiteURL= sURL; V}G;oz&>)
sFilePath = sPath; .ityudT<
sFileName = sName; vRO`hGH
this.nSplitter = nSpiltter; V4%7Xj
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} r*ry8QA
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public String getSSiteURL() /9C>{29x!
{ LS1}j WU!
return sSiteURL; gHU0Pr9'
} qI\B;&hr(
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public void setSSiteURL(String value) YccD^w[`B
{ T:udw
sSiteURL = value; }/.b@`Dh;
} Y{m1\s/ o
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public String getSFilePath() oVnHbvP1X
{ `q1K%id
return sFilePath; ezk:XDi4
} |F>'7JJJ
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public void setSFilePath(String value) hKp-"
{ W#<ZaGsq
sFilePath = value; :B4X/
} |Iq\ZX%q
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public String getSFileName() ljj}XJQ
{ <F5x}i~(C
return sFileName; N%QVkuCbM
} [6a&9#[A
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public void setSFileName(String value) V8J!8=2
{ ,O"zz7
sFileName = value; ;z^C\=om
} Ha/-v?E
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public int getNSplitter() ;(9q, )
{ kA<58,!
return nSplitter; Y-c_ 2 )
} C+c;UzbD
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public void setNSplitter(int nCount) "zBYhZr
{ FDO$(&
nSplitter = nCount; D7b]
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} Ja#ti y
} :+\B|*T2.L
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/* q%GlS=o"
**Utility.java o%=OBTh_
*/ TW?A/GoXI
package NetFox; Ny)!uqul*
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public class Utility { 2q.J1:lW
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public Utility() '\.fG\xD
{ (
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} 8!{F6DG
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//线程睡眠 J(\f(jh/
public static void sleep(int nSecond) elf2!
{ F&x9.
try{ %B'*eBj~fw
Thread.sleep(nSecond); 8yV?l7
} =E''$b?Em
catch(Exception e) juQQ
{ }_L,Xg:I
e.printStackTrace (); Fm3B8Int
} Ks@
} *XZlnO
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//日志 ]%VR Nm
public static void log(String sMsg) 1zUo.Tg0
{ oO8V0VE\
System.err.println(sMsg); *^q%b/ f
} m.A_u7D@
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public static void log(int sMsg) (\<