/* yN`hW&K
**SiteFileFetch.java Hm>cKPZ)
*/ ]3,9."^
package NetFox; |k}L=oWE
import java.io.*; e{87n>+,
import java.net.*; n;:.UGl9.
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public class SiteFileFetch extends Thread { deYv&=SPl
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SiteInfoBean siteInfoBean = null; //文件信息Bean rAHP5dx:
long[] nStartPos; //开始位置 (Ox&B+\v+v
long[] nEndPos; //结束位置 @:CM<+
FileSplitterFetch[] fileSplitterFetch; //子线程对象 WynTU?
long nFileLength; //文件长度 .^=I&X/P
boolean bFirst = true; //是否第一次取文件 u(1m#xr8$
boolean bStop = false; //停止标志 dDl+
File tmpFile; //文件下载的临时信息 :35h0;8+
DataOutputStream output; //输出到文件的输出流 @a]cI
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 9Cd/SlNV2
public SiteFileFetch(SiteInfoBean bean) throws IOException BQWgL
{ n6Uh%rO7S|
siteInfoBean = bean; c3l(,5DtH
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); fgL"\d}
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ,sc#l<v
if(tmpFile.exists ()) xV+\R/)x
{ WG A&Lr
bFirst = false; 46)[F0,$r
read_nPos(); ?,riwDI 2
} ;0kAm
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else /f?;,CyI
{ #FAW@6QG
nStartPos = new long[bean.getNSplitter()]; E<-W & a }
nEndPos = new long[bean.getNSplitter()]; zP0<4E$M`
} 4$vUD1('
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} dL4VcUS.
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public void run() Xlug{ Uh
{ 'qiAmaX
//获得文件长度 mz1m^p)~{
//分割文件 AaB1H7r-
//实例FileSplitterFetch ulN1z
//启动FileSplitterFetch线程 1t/c@YUTy
//等待子线程返回 xzY/$?
try{ y_[VhZ%
if(bFirst) p@Os
{ mB0`>?#i
nFileLength = getFileSize(); R&t2
if(nFileLength == -1) "dv\
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{
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System.err.println("File Length is not known!"); 7^rT-f07
} @eBo7#Zr
else if(nFileLength == -2) \M.?*p
{ 9HN&M*}
System.err.println("File is not access!"); :tFcPc'
} k~<Ozx^AyY
else e^\(bp+83
{ +|S)Mm8-
for(int i=0;i<nStartPos.length;i++) BR@gJ(2
{ |wb_im
nStartPos = (long)(i*(nFileLength/nStartPos.length)); H&*&n}vh5y
} I&15[:b=-
for(int i=0;i<nEndPos.length-1;i++) ,ynN801\m
{ lgVT~v{U`n
nEndPos = nStartPos[i+1]; T7ShE-X
} ;9)nG,P3
nEndPos[nEndPos.length-1] = nFileLength; fuHNsrNlm
} S`mB1(h
} C<:wSS^@1
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//启动子线程 $Nvox<d0
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; )2W7>PY
for(int i=0;i<nStartPos.length;i++) -u~:Gd*l0
{ ?S=y>b9R
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), :+9. v
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), k
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nStartPos,nEndPos,i); d/oD]aAEr
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); h8.(Q`tli
fileSplitterFetch.start(); 0nI*9
} `3[W~Cq
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), py~[M'p(H
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); f9_Pn'"I
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", !T)_(}|6}
nEndPos = " + nFileLength); A;ZluQ
// fileSplitterFetch[nPos.length-1].start(); OBlQ
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//等待子线程结束 23=wz%tF
//int count = 0; \[]BB5)8
//是否结束while循环 E<B/5g!
boolean breakWhile = false; m#Z9wf] F
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while(!bStop) 'dQGb-<_<
{ $i8oLSRV
write_nPos(); It 3@
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Utility.sleep(500); mDwuJf8}
breakWhile = true; 8EiS\$O-
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for(int i=0;i<nStartPos.length;i++) 2^5RQl/
{ s&WE'
if(!fileSplitterFetch.bDownOver) Qd3ppJn
{ 3M[d6@a
breakWhile = false; SJ8
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break; lnMU5[g{
} ="@f~~
} HCktgL:E=
if(breakWhile) c0jTQMe4yl
break; [ot+EA
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//count++; XI ><;#
//if(count>4) u[wDOw
// siteStop(); ZZxt90YR'5
} QRdtr
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System.err.println("文件下载结束!"); = =KDr0|G
} ;L],i<F
catch(Exception e){e.printStackTrace ();} Y?oeP^V'u
} 2I=4l
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//获得文件长度 LsMq&a-j2
public long getFileSize() WT 5 2
{ n%vmo
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int nFileLength = -1; "0>AefFd#
try{ |U~\;m@
URL url = new URL(siteInfoBean.getSSiteURL()); &u2m6 r>W
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); GIkVU6Q}
httpConnection.setRequestProperty("User-Agent","NetFox"); '|%\QWuZ
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int responseCode=httpConnection.getResponseCode(); FV OPC:}bj
if(responseCode>=400) aNICSxDN
{
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processErrorCode(responseCode); 70R_O&f-k
return -2; //-2 represent access is error UY\E uA9
} +OInf_O
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String sHeader; }&l%>P
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for(int i=1;;i++) [].euDrX
{ K9RRY,JB
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); )DQcf]I
//Utility.log(in.readLine()); A(C0/|#V
sHeader=httpConnection.getHeaderFieldKey(i); +I.{y
if(sHeader!=null) ,}^;q58
{ _4lKd`
if(sHeader.equals("Content-Length")) ? a*yK8S
{ @C~gU@F
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 9~r8$,e
break; ``h*A
} w/ID yQ
} Jd|E
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else <5|:QLqy
break; '_n$xfH
} 0e'@Xo2e
} k <LFH(
catch(IOException e){e.printStackTrace ();} 7X/B9Hee
catch(Exception e){e.printStackTrace ();} x)kp*^/
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Utility.log(nFileLength); +'g~3A-G
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return nFileLength; ^7`gf
} p"Di;3!y!
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//保存下载信息(文件指针位置) Ez^wK~
private void write_nPos() Q"GZh.m
{ ML1/1GK*i+
try{ R8,
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output = new DataOutputStream(new FileOutputStream(tmpFile)); m8 *)@e
output.writeInt(nStartPos.length); N<HJ}geC"
for(int i=0;i<nStartPos.length;i++) Pfg.'Bl
{ [:{HX U7y
// output.writeLong(nPos); @PKY>58)
output.writeLong(fileSplitterFetch.nStartPos); bqZ5GKUo
output.writeLong(fileSplitterFetch.nEndPos); [_tBv" z
} a7fn{VU8
output.close(); w"h3e
} KD..X~Me
catch(IOException e){e.printStackTrace ();} =|3*Y0
catch(Exception e){e.printStackTrace ();} T$Rf
} c38ENf
}}d,xI
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//读取保存的下载信息(文件指针位置) $?|$uMIafp
private void read_nPos() tNDv[IF
{ srIt_Wq
try{ >yt8gw0J
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); vq5o?$:-
int nCount = input.readInt(); ";w"dfC^
nStartPos = new long[nCount]; (5=B^9{R
nEndPos = new long[nCount]; _Qf310oONS
for(int i=0;i<nStartPos.length;i++) Y$eO:67;
{ lMb&F[KJ7
nStartPos = input.readLong(); SOJkeN
nEndPos = input.readLong(); mA\}zLw+r9
} WQltUaF
input.close(); ggzcANCD<
} @VKN6yHH
catch(IOException e){e.printStackTrace ();} B d?{ldg
catch(Exception e){e.printStackTrace ();} lD1m<AC
} <L<d_
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private void processErrorCode(int nErrorCode) FWQNO(
{ `z6I][Uf
System.err.println("Error Code : " + nErrorCode); bb`8YF+?'
} a~Y`N73/c
,\ zx4*
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//停止文件下载 YyD0g9{
public void siteStop() t|}}#Z!I[f
{ pn
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bStop = true; !s[[X5
for(int i=0;i<nStartPos.length;i++) iiTt{ab\Y
fileSplitterFetch.splitterStop(); JR4fJG
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} <2fgao&-n
} 7NQEn Al
//负责部分文件的抓取 yo!Y%9
**FileSplitterFetch.java kuo!}QFL
*/ rc7^~S]5
package NetFox; *L#\#nh7
AP/#?
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import java.io.*; ->a|
import java.net.*; Ox&]{
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public class FileSplitterFetch extends Thread { :#Nrypsu
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String sURL; //File URL g,}_&+q:.M
long nStartPos; //File Snippet Start Position +Z=DvKsTJ
long nEndPos; //File Snippet End Position 'Em633
int nThreadID; //Thread's ID )PjU=@$lI
boolean bDownOver = false; //Downing is over nm]m!.$d
boolean bStop = false; //Stop identical s73' h
FileAccessI fileAccessI = null; //File Access interface em?Q4t
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException trMwFpfu
{ `-w;/A"MJ
this.sURL = sURL; CsiRM8
this.nStartPos = nStart; H[U"eS."
this.nEndPos = nEnd; NWII?X#T}
nThreadID = id; L_R(K89w
fileAccessI = new FileAccessI(sName,nStartPos);//定位 o'|B|oZ
} DN;3VT.-
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public void run() i&\cDQ 3
{ ..UA*#%1
while(nStartPos < nEndPos && !bStop) b-HELS`nX
{ C,VvbB
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try{ U*7x81v?j
URL url = new URL(sURL); |?4NlB6
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); "WzD+<oL
httpConnection.setRequestProperty("User-Agent","NetFox"); -nDY3$U/
String sProperty = "bytes="+nStartPos+"-"; b>L?0p$ej
httpConnection.setRequestProperty("RANGE",sProperty); r&Qq,koE
Utility.log(sProperty); V3q[$~9
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InputStream input = httpConnection.getInputStream(); N%!{n7`N:
//logResponseHead(httpConnection); FPukV^
F $1f8U8
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byte[] b = new byte[1024]; l9f%?<2D
int nRead; |H>;a@2d
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 5Tq*]ZE
{ {_~vf
nStartPos += fileAccessI.write(b,0,nRead); ayQ2#9X}
//if(nThreadID == 1) 'C)
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// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); *g[MGyF"
} %{&,5|8
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Utility.log("Thread " + nThreadID + " is over!"); hd@jm^k
bDownOver = true; 3>mAZZL5[
//nPos = fileAccessI.write (b,0,nRead); CI^s~M >
} >Et~h65d5
catch(Exception e){e.printStackTrace ();} f-Zi!AGh>
} h}4yz96WD
} K>G.HN@
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//打印回应的头信息 y'(a:.%I
public void logResponseHead(HttpURLConnection con) VE?Aa
{ $0|`h)&
for(int i=1;;i++) ]EqwDw4
{ ji.T7wn1u
String header=con.getHeaderFieldKey(i); 5:(/k\9+yv
if(header!=null) "<&) G{
//responseHeaders.put(header,httpConnection.getHeaderField(header)); 6o4Y]C2W{1
Utility.log(header+" : "+con.getHeaderField(header)); BJKv9x1jK
else DGNn#DP
break; P=R-1V
} zJov*^T-C
} yX/{eX5dr
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public void splitterStop() lN*beOj
{ 5}Z>N,4
bStop = true; fGoJP[ae
} wU|jw(
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} p4D.nB8
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/* 6B+?X5-6DH
**FileAccess.java D~ n-;T
*//文件访问(定位,写) d .%2QkL
package NetFox; /QT>"
import java.io.*; _ Y7Um
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public class FileAccessI implements Serializable{ T"1=/r$Ft
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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 [,(+r7aB
RandomAccessFile oSavedFile; n;wViw
long nPos; Q" r y@
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public FileAccessI() throws IOException 6Ta+f3V
{ xxA^A
this("",0); w |abaMam
} 7^tYtMm|U
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public FileAccessI(String sName,long nPos) throws IOException ~RLWr.pK
{ @0(%ayi2Y
oSavedFile = new RandomAccessFile(sName,"rw"); y?U@F/^}N
this.nPos = nPos; FC
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oSavedFile.seek(nPos); dh9@3. t
} #}l$<7ZU
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public synchronized int write(byte[] b,int nStart,int nLen) Xk\IO0GF
{ uh`5:V
int n = -1; Swh\^/B8
try{ E\TWPV'/
oSavedFile.write(b,nStart,nLen); q3C
n = nLen; 4U~'Oa@p
} <KfR)7I$0a
catch(IOException e) ?d+ri
{ [5tvdW6Z&
e.printStackTrace (); A1r%cs
} %J Jp/I
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return n; bg|dV
} Ve${g`7&
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} maeQ'Sv_&
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/* c91^7@Xv
**SiteInfoBean.java %|D)U>o{
*/ Zu2`IzrG#
package NetFox; JY@bD:
vG7Mk8mIr
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public class SiteInfoBean { :!hO9ho
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private String sSiteURL; //Site's URL -<9Qez)y
private String sFilePath; //Saved File's Path {~w( pAx
private String sFileName; //Saved File's Name h(R7y@mp\0
private int nSplitter; //Count of Splited Downloading File fDqDU
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public SiteInfoBean() $-u c#57
{//nSplitter的缺省值为5 %|ClYr
//default value of nSplitter is 5 'HJ+)[0X*
this("","","",5); v 2p
} p(nO~I2E
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) bI|{TKKN&P
{ *JfGGI_E
sSiteURL= sURL; L>mM6$l
sFilePath = sPath; v9FR
sFileName = sName; ,]nRnI^
this.nSplitter = nSpiltter; :y`LF<
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} DaJ,(DJY
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public String getSSiteURL() 8EMBqhl
{ lJN#_V0qW
return sSiteURL; dNY'uv&Y
} Thu_`QP^
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public void setSSiteURL(String value) ,X1M!'
{ (X-(
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sSiteURL = value; rk4KAX_[
} ;Z`a[\i':
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public String getSFilePath() 6rj iZ%
{ xf/K+
return sFilePath; .AOc$Nt
} mtkZF{3Jx
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public void setSFilePath(String value) ']fyD3N
{ S.Kcb=;"L
sFilePath = value; 'jMs&
} )/JVp>
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}!k?.(hpE
public String getSFileName() 9H;Os:"\|
{ *3E3,c8{A
return sFileName; [W{|94q
} X Db% -
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public void setSFileName(String value) -?:8sv*X
{ 1Az&BZU[
sFileName = value; 5+!yXkE^e
} Pv,PS.,-
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public int getNSplitter() lK7:qo
{ }~=<7|N.
return nSplitter; @%2crJnkS
}
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public void setNSplitter(int nCount) W( sit;O
{ BeQ'\#q,
nSplitter = nCount; Ix,b -C~
} N0}[&rE 8
} "%+||IyW
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":
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/* Sin)]zG~0
**Utility.java r}e(MT:R'
*/ -6uLww=w4
package NetFox; 9<y{:{i
l l*g *zt3
[tSv{
public class Utility { eN|zD?ba&
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public Utility() I4w``""c
{ %%n&z6w