/* rc9 \
**SiteFileFetch.java Hz%#&E
*/ )#IiHBF
package NetFox; xREqcH,vU
import java.io.*; @6}c\z@AxM
import java.net.*; { S4?L8
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public class SiteFileFetch extends Thread { U#d",s
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SiteInfoBean siteInfoBean = null; //文件信息Bean 'zi5ihiT
long[] nStartPos; //开始位置 &tHT6,Xv(
long[] nEndPos; //结束位置 6_`x^[r
FileSplitterFetch[] fileSplitterFetch; //子线程对象 $PHKI B(
long nFileLength; //文件长度 C&Ow*~
boolean bFirst = true; //是否第一次取文件 [1 w
boolean bStop = false; //停止标志 YeYFPi#
File tmpFile; //文件下载的临时信息 h* h+VM
DataOutputStream output; //输出到文件的输出流 byyz\>yAVq
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) iV(B0z
public SiteFileFetch(SiteInfoBean bean) throws IOException Qh%7RGh_
{ +cQ4u4
siteInfoBean = bean; u5$\E]+_
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); q8P| ]
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); =ni&*&
if(tmpFile.exists ()) >umcpkp-h
{ )Xl/|YD
bFirst = false; -Ufd+(
read_nPos(); t 0nGZ%`
} L8/o9N1
else j}#48{
{ 3Ki`W!C
nStartPos = new long[bean.getNSplitter()]; i1\xZ<|0
nEndPos = new long[bean.getNSplitter()]; |Tf}8e
} Yf7n0Etd,
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} W>bhSKV%
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public void run() c^Rz?2x
{ ^md7ezXL
//获得文件长度 @X\Sh>H
//分割文件 ('OPW&fRG
//实例FileSplitterFetch LN" bGe
//启动FileSplitterFetch线程 Bx j6/a7Xd
//等待子线程返回 oT5?*3f
try{ aq0J }4U
if(bFirst) )}]<o
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{ %n=!H
nFileLength = getFileSize(); }i|o":-x+
if(nFileLength == -1) H.v`JNs(
{ 2JUX29rER
System.err.println("File Length is not known!"); qs\
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} #:DDx5%x<b
else if(nFileLength == -2) .G?7t6A
{ fn&gM\<-+(
System.err.println("File is not access!"); 1;080|,s
} xXp\U'Ad~~
else * j:
{
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for(int i=0;i<nStartPos.length;i++) hy3[MOD$G
{ Lk4&&5q
nStartPos = (long)(i*(nFileLength/nStartPos.length)); rcOpOoU|
} eP(%+[g
for(int i=0;i<nEndPos.length-1;i++) 'g|%Ro/
{ gE`G3kgn{
nEndPos = nStartPos[i+1]; Ej F< lw
} lk1c2
nEndPos[nEndPos.length-1] = nFileLength; 05=O5<l
} ~pX&>v\T
} 0$":W
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//启动子线程 R^f~aLl
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 9'Pyo`hJ#U
for(int i=0;i<nStartPos.length;i++) STVJu![
{ %0Ulh6g;Dt
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Yw\}'7
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ?G*XZ0u~
nStartPos,nEndPos,i); I&q:w\\z8|
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); *~lD;{2
fileSplitterFetch.start(); ;]i&AAbj
} RR75ke[Hs
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), [WRs1$5
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ryW1OV6?_0
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", V%<<Udu<
nEndPos = " + nFileLength); fP&F$"o8
// fileSplitterFetch[nPos.length-1].start(); d[kb]lC
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//等待子线程结束 4+$<G /K
//int count = 0; ;=5V)1~i1;
//是否结束while循环 NQ'^z
boolean breakWhile = false; B5 C]4
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while(!bStop) ,B5Ptf#
{ 0{BPT>'
write_nPos(); ^ B=x-G.
Utility.sleep(500); v"F.<Q
breakWhile = true; qaA\.h7
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for(int i=0;i<nStartPos.length;i++) 6pLB`1[v
{ !_?<-f(
if(!fileSplitterFetch.bDownOver) $P866F
{ 7B"J x^
breakWhile = false; /A9M v%zjk
break; nbMH:UY,J
} Jk}L+Xvv
} P qagep d
if(breakWhile) 69dFd!G\
break; [{}9"zB$x0
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//count++; 6!n"E@Bwu
//if(count>4) SR*%-JbA
// siteStop(); vk5pnCM^3
} xv$^%(Ujp
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System.err.println("文件下载结束!"); ^n@iCr9
} YQ,IdWav
catch(Exception e){e.printStackTrace ();} p0qQ(
} L}XEROTR
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//获得文件长度 _a+0LTo".
public long getFileSize() q)G*"
{ KjZ^\lq'
int nFileLength = -1; Pl}}!<!<z
try{ mIFS/C
URL url = new URL(siteInfoBean.getSSiteURL()); ,^26.p$
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ,H1J$=X'
httpConnection.setRequestProperty("User-Agent","NetFox"); i>ORCOOU
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int responseCode=httpConnection.getResponseCode(); `DG6ollp{
if(responseCode>=400) )N)ziAy}
{ D8m?`^Zz
processErrorCode(responseCode); smIZ:L%
return -2; //-2 represent access is error "sAR<5b
} thipfS
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String sHeader; xXA$16kd
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for(int i=1;;i++) l]sO[`X
{ 4=o3ZRV
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ());
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//Utility.log(in.readLine()); {)4Vv`n
sHeader=httpConnection.getHeaderFieldKey(i); F#X\}MvEU
if(sHeader!=null) L9Fx
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{ .Z%7+[
if(sHeader.equals("Content-Length")) px//q4U
{ n
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); )tFFa*Z'
break; f910drg7
} %bDd
} "sT`Dhr
else KS*W<_I
break; *n}9_V%
} *XniF~M
} qgI
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catch(IOException e){e.printStackTrace ();} ;jX_e(T3m
catch(Exception e){e.printStackTrace ();} ;4 ?%k )
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Utility.log(nFileLength); oYJ&BPuA'
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return nFileLength; Rn(|
} 5Hr(9)
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//保存下载信息(文件指针位置) }s}9@kl;&
private void write_nPos() &CUkR6
{ MYN1zYT6j
try{ 8^dGI9N
output = new DataOutputStream(new FileOutputStream(tmpFile)); L'aMXNO
output.writeInt(nStartPos.length); $ZcmE<7k
for(int i=0;i<nStartPos.length;i++) ^jf$V#z0/
{ Dcus-,u~
// output.writeLong(nPos); \?3];+c9
output.writeLong(fileSplitterFetch.nStartPos); /3KEX{'@U
output.writeLong(fileSplitterFetch.nEndPos); yA%[u.{
} ~@'|R%jJ
output.close(); JSGUl4N
} De>pIN;B>
catch(IOException e){e.printStackTrace ();} RK rBHqh@
catch(Exception e){e.printStackTrace ();} cLR8U1k'
} NA/+bgyuT>
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//读取保存的下载信息(文件指针位置) +Kf::[wP7
private void read_nPos() }Ecm
{ ARQ1H0_B
try{ 8$G$Rdn
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); i3e|j(Gs4
int nCount = input.readInt(); *,'"\n
nStartPos = new long[nCount]; ]nfS vPb
nEndPos = new long[nCount]; N" E\o,_
for(int i=0;i<nStartPos.length;i++) ioa 1n=j
{ i
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nStartPos = input.readLong(); A%Bz52yg
nEndPos = input.readLong(); 'kx{0J?
} =WO{h48]
input.close(); xHD!8B)
} .zegG=q
catch(IOException e){e.printStackTrace ();} \2NiI]t]
catch(Exception e){e.printStackTrace ();} qZ1fQN1yG
} 0
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private void processErrorCode(int nErrorCode) )$th${pd#v
{ Uj!L:u2b
System.err.println("Error Code : " + nErrorCode); (qPZEZKx
} %+pXzw`B
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//停止文件下载 ImF/RKI~ "
public void siteStop() xUSIck
{ Q| xPm:
bStop = true; u"|.]r
for(int i=0;i<nStartPos.length;i++) koqH~>ZtD
fileSplitterFetch.splitterStop(); E&[ox[g{
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} |=h>3Z=r!
} `q
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//负责部分文件的抓取 As)-a5!
**FileSplitterFetch.java ,%,}[q?]d
*/ bjvi`jyL3k
package NetFox; wkIH<w|jb
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import java.io.*; /5=A#G
import java.net.*; IF1?/D"<
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public class FileSplitterFetch extends Thread { l|uN-{w
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String sURL; //File URL ]I}'
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long nStartPos; //File Snippet Start Position L3kms6ch
long nEndPos; //File Snippet End Position [e*8hbS
int nThreadID; //Thread's ID 5,mb]v0k
boolean bDownOver = false; //Downing is over sF<4uy
boolean bStop = false; //Stop identical ](a<b@p
FileAccessI fileAccessI = null; //File Access interface I`y}Ky<q
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException XDI@mQmzB
{ SgY>$gP9S
this.sURL = sURL; JgxOxZS`@
this.nStartPos = nStart; IGbQ L
this.nEndPos = nEnd; J7l1-
nThreadID = id; HZP`u >.
fileAccessI = new FileAccessI(sName,nStartPos);//定位 0#yo\McZ
} Y)a 7osML
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public void run() Y)!5Z.K
{ "C0oFRk
while(nStartPos < nEndPos && !bStop) -bs~{
{ h\20
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try{ (^6SF>'
URL url = new URL(sURL); E8V,".!+E
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); g!K(xhEO
httpConnection.setRequestProperty("User-Agent","NetFox"); Y]Xal
String sProperty = "bytes="+nStartPos+"-"; )9PQj
httpConnection.setRequestProperty("RANGE",sProperty); VvPTL8Z
Utility.log(sProperty); 2} T"|56
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InputStream input = httpConnection.getInputStream(); IRcZyry
//logResponseHead(httpConnection); :Tjo+vw7$H
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byte[] b = new byte[1024]; N2x\O~7
int nRead; |#MA?oz3T
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) ^c-1wV`/
{ v4 c_UFEh<
nStartPos += fileAccessI.write(b,0,nRead); TYB^CVSZ
//if(nThreadID == 1) P [gqv3V
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); D+k5e=
} o,X ?
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Utility.log("Thread " + nThreadID + " is over!"); PR.?"$!D{
bDownOver = true; v'DL >Y
//nPos = fileAccessI.write (b,0,nRead); 8Y&(o-R0
} %*Y:Rm'>
catch(Exception e){e.printStackTrace ();} NB>fr#pb
} )TP7gLv=b
} +=:CW'B5
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//打印回应的头信息 n32BHOVE
public void logResponseHead(HttpURLConnection con) L.erP*
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{ 'GNT'y_
for(int i=1;;i++) [S*bN!t
{ d7l0;yR&+
String header=con.getHeaderFieldKey(i); jMZ{>l.v
if(header!=null) 4Kx;F
9!%~
//responseHeaders.put(header,httpConnection.getHeaderField(header)); wLNO\JP'
Utility.log(header+" : "+con.getHeaderField(header)); !v94FkS>
else b^FB[tZ\x
break; :~g=n&x
} 0h$23.
} mNs&*h}
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public void splitterStop() jYuH
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{ ` 8.d
bStop = true; mO]>(^c
} h*&-[nSo
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} q(_pk&/
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/* / 1g_Uv;
**FileAccess.java ,LU/xI0O
*//文件访问(定位,写) RXLD5$s^
package NetFox; CYs:P8^
import java.io.*; MSsboSxA
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public class FileAccessI implements Serializable{ t&0pE(MO/
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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 Qnph?t>
RandomAccessFile oSavedFile; [,$] %|6wt
long nPos; 2et7Vw
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public FileAccessI() throws IOException tecCU[O
{ (|"KsGl
this("",0); b`fPP{mG
} X>=`{JS1
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public FileAccessI(String sName,long nPos) throws IOException KK}^E_v
{
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oSavedFile = new RandomAccessFile(sName,"rw"); z4{H=
this.nPos = nPos; M-"%4^8_
oSavedFile.seek(nPos); jBarY g
} Hj$JXo[U
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public synchronized int write(byte[] b,int nStart,int nLen) s9@/(_
{ t|%wVj?_
int n = -1; f9F@G&&Ugg
try{ [C9 ->`(`
oSavedFile.write(b,nStart,nLen); ON\_9\kv
n = nLen; 'eZUNX
} AWc7TW
catch(IOException e) YrL:!\p.
{ ,QdUfM
e.printStackTrace (); {-09,Q4[&
} IXe[JL:
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return n; u4, p.mZtb
} kW3V"twx
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} V^As@P8,'(
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/* v&;q4b4
**SiteInfoBean.java C%9;~S
*/ yL7D;<!S&
package NetFox; 4U*J{''L
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public class SiteInfoBean { hjtkq.@
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private String sSiteURL; //Site's URL ]<V[H
private String sFilePath; //Saved File's Path ~DPjTR
private String sFileName; //Saved File's Name D .oX>L#:
private int nSplitter; //Count of Splited Downloading File ^y]CHr
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public SiteInfoBean() ^OnU;8IC
{//nSplitter的缺省值为5 \!Cix}}1
//default value of nSplitter is 5 Gt3V}"B3\
this("","","",5); DpI)qg#>V
} n*D-01vYP
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 6sJN@dFA
{ :
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sSiteURL= sURL; oi^2Pvauh
sFilePath = sPath; 33z)F
sFileName = sName; ^1sX22k
this.nSplitter = nSpiltter; lTBPq?4{
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} $!)Sgb
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public String getSSiteURL() hy3j8?66
{ ;}"_hLX
return sSiteURL; [p^N].K$
} X`JWYb4
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public void setSSiteURL(String value) GVP"~I~/:
{ ]r8t^bqe
sSiteURL = value; pC2ZN
} [DpGL/Y.
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public String getSFilePath() A[`c2v-hF
{ QV,X> !Nz
return sFilePath; 'Alt+O_
} J6r"_>)z
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public void setSFilePath(String value) h
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{ {>PN}fk2QP
sFilePath = value; 6A&e2K> A
} /`McKYIP
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public String getSFileName() Y /$`vgqs
{ =@q 9,H
return sFileName; q<