/* <W51 oO
**SiteFileFetch.java _'hCUXeY'
*/ id tQXwa
package NetFox; te*Y]-&I|/
import java.io.*; <,pLW~2-"
import java.net.*; C6'*/wq
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public class SiteFileFetch extends Thread { kE_@5t7O{
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SiteInfoBean siteInfoBean = null; //文件信息Bean ZC5Yve8
long[] nStartPos; //开始位置 /GuSIZg"_
long[] nEndPos; //结束位置 ;2Ad])
FileSplitterFetch[] fileSplitterFetch; //子线程对象 JNFT6T)T15
long nFileLength; //文件长度 TFC!u0Y"$
boolean bFirst = true; //是否第一次取文件 rZ.a>'T4
boolean bStop = false; //停止标志 2b4pOM7W
File tmpFile; //文件下载的临时信息 J7?)$,ij%
DataOutputStream output; //输出到文件的输出流 C*s0r;
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) LbV]JP
public SiteFileFetch(SiteInfoBean bean) throws IOException %V %#y $l
{ c,+(FQ9
siteInfoBean = bean; F%.9fUo
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); *2Vp4
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); &Ev]x2YC
if(tmpFile.exists ()) Kcw1uLb
{ ;V"yMWjc
bFirst = false; T]nR=uK6LL
read_nPos(); CS;W)F
} K_&c5(-(_
else ]\a\6&R
{ \buZ?
nStartPos = new long[bean.getNSplitter()]; }&(E#*>x
nEndPos = new long[bean.getNSplitter()]; h#@4@x{
} QBfhyo_
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} *K}z@a_
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public void run() V8nz-DL{
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//获得文件长度 :n+y/6*
//分割文件 $
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//实例FileSplitterFetch T^'*_*m
//启动FileSplitterFetch线程 I[g?Ju >
//等待子线程返回 AY&9JSu6
try{ Zc4(tf9
if(bFirst) 8L7Y
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{ V/(`Ek-
nFileLength = getFileSize(); Uin k
if(nFileLength == -1) W>?f^C!+m
{ F8uRT&m B0
System.err.println("File Length is not known!"); [>$\s=` h
} . QQ?w
else if(nFileLength == -2) zL)1^[%O9
{ lTV@b&
System.err.println("File is not access!"); o5=)~D{/G3
} 4T==A#Z
else uG=t?C6
{ PG^j}
for(int i=0;i<nStartPos.length;i++) &?/N}g@K
{ +QIGR'3u
nStartPos = (long)(i*(nFileLength/nStartPos.length)); ,#E3,bu6_4
} :$M9XZ~\
for(int i=0;i<nEndPos.length-1;i++) V6@*\+:3)
{ L9{mYA]q
nEndPos = nStartPos[i+1]; `qf\3JT\
} p|h.@do4
nEndPos[nEndPos.length-1] = nFileLength; GhG%>U#&a
} Sl. KLc@@
} BaWQ<T8p8
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//启动子线程 ?qf:_G
fileSplitterFetch = new FileSplitterFetch[nStartPos.length];
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for(int i=0;i<nStartPos.length;i++) :(bdI]
{ 3 {NaZIk
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), DA+A >5/
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Q$xa
nStartPos,nEndPos,i); Em~7D]Y
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); V17>j0Ev$W
fileSplitterFetch.start(); HF&h
} KjFZ
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ig{A[7qN
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); iUeV5cB
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", qs6Nb'JvQR
nEndPos = " + nFileLength); C2+{U
// fileSplitterFetch[nPos.length-1].start(); ?(5o@Xq
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//等待子线程结束 pau*kMu^}
//int count = 0; vF9*tK'
//是否结束while循环 n9]IBIthe
boolean breakWhile = false; OLk9A
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while(!bStop) F5FNhuC
{ 0hrCG3k.91
write_nPos(); 0V<Aub[${
Utility.sleep(500); x r-;,W
breakWhile = true; Np.no$_
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for(int i=0;i<nStartPos.length;i++) =dgo!k
{ ~A8qeaP
if(!fileSplitterFetch.bDownOver) D ?Nd; [
{ 4t&gW
breakWhile = false; >EBZ$ X
break; 0n4g$JK7
} x`]Ofr'
} +<pVf%u5
if(breakWhile) nGq]$h
break; Ef2Yl
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//count++; wVx,JL5Jr
//if(count>4) =LlLE<X"%x
// siteStop(); ;M}itM
} H"#)&a7
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System.err.println("文件下载结束!"); pTcbq
} *-?Wcz
catch(Exception e){e.printStackTrace ();} EfFz7j&X
} Yuwc$Qp)
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//获得文件长度 cwk+#ur
public long getFileSize() uzHT.iBn
{ YSqv86
int nFileLength = -1; w?kGi>7E
try{ [dl+:P:zc
URL url = new URL(siteInfoBean.getSSiteURL()); x|.v{tQa
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); mfZ)^X
httpConnection.setRequestProperty("User-Agent","NetFox"); HwB {8S?sm
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int responseCode=httpConnection.getResponseCode(); k) "ao2iXL
if(responseCode>=400) 9z #P
{ RG&I\DTyt
processErrorCode(responseCode); `-4'/~G
return -2; //-2 represent access is error [-4KY4R
} K'x4l,rq
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String sHeader; 8s<^]sFP
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for(int i=1;;i++) \,2gTi,=
{ w "{bp
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); &B}Lo
//Utility.log(in.readLine()); >L^xlm%7o
sHeader=httpConnection.getHeaderFieldKey(i); |z:Q(d06
if(sHeader!=null) q7|:^#{av
{ #;`Oj
if(sHeader.equals("Content-Length")) 27m@|M] R
{ C`)_i3
^
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); @c Z\*,T
break; fb23J|"
} t\zbEN
} u+m4!`
else md?b*
break; 0x\2#i
} 7!pLK&_
} (qUK7$
catch(IOException e){e.printStackTrace ();} cQX:%Ix=
catch(Exception e){e.printStackTrace ();}
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Utility.log(nFileLength); qYK4)JP
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return nFileLength; (VyA6a8
} T'.[F
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//保存下载信息(文件指针位置) 3E,DipHg
private void write_nPos() FqwIJ|ct
{ \ZMP_UU(
try{ Z ] '>
output = new DataOutputStream(new FileOutputStream(tmpFile)); r?pZ72q
output.writeInt(nStartPos.length); 1SUzzlRx
for(int i=0;i<nStartPos.length;i++) ll%G!VR
{ sm
// output.writeLong(nPos); P[FV2R~
output.writeLong(fileSplitterFetch.nStartPos); jJia.#.Ze
output.writeLong(fileSplitterFetch.nEndPos); qz`rL#W]
} ZYa\"zp-
output.close(); G=|70pxU
} :k~dj C
catch(IOException e){e.printStackTrace ();}
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catch(Exception e){e.printStackTrace ();} tw<P)V\h
} /g@^H/DO
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//读取保存的下载信息(文件指针位置) V.8%|-d
private void read_nPos() vM(Xip7
{ 3rNc1\a;
try{ T`\]!>eb
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); L+.H z&*@
int nCount = input.readInt(); M\9F:.t=
nStartPos = new long[nCount]; I^G^J M!
nEndPos = new long[nCount]; h=6xZuA\
for(int i=0;i<nStartPos.length;i++) F+ukAT
{ Q_]~0PoH
nStartPos = input.readLong(); Ux}W&K/?'
nEndPos = input.readLong(); |gv{z"
} Efx=T$%^&
input.close(); FaY_0G;y
} \0?$wIH?
catch(IOException e){e.printStackTrace ();} 3+>OGwfQ
catch(Exception e){e.printStackTrace ();} a8Uk[^5
} J4>;[\%m
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private void processErrorCode(int nErrorCode) u1^\MVO8
{ ?YBaO,G9o
System.err.println("Error Code : " + nErrorCode); ]g,lRG
} J\=a gQ
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j;\[pg MR/
//停止文件下载 Ie@Jb{x
public void siteStop() !n<o)DsZR
{ E(4w5=8TI
bStop = true; uv]{1S{tb
for(int i=0;i<nStartPos.length;i++) ?#BV+#(
fileSplitterFetch.splitterStop(); \|%E%Yc
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} fx)KNm8Lx
} ?:igumeYX
//负责部分文件的抓取 E'EcP4eL
**FileSplitterFetch.java Wp[9beI*M
*/ ar$*a>'?
package NetFox; ?pG/m%[
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import java.io.*; q]FBl}nwl%
import java.net.*; 3-|3`(
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public class FileSplitterFetch extends Thread { h5GU9M
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String sURL; //File URL <a|@t@R
long nStartPos; //File Snippet Start Position 8lP6-VA
long nEndPos; //File Snippet End Position L:@fP~Erh
int nThreadID; //Thread's ID {@.Vh]
boolean bDownOver = false; //Downing is over G1d(,4Xp
boolean bStop = false; //Stop identical bL1m'^r
FileAccessI fileAccessI = null; //File Access interface VagT_D
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Qxa{UQh}9
{ 6B6vP%H#
this.sURL = sURL; |PP.<ce\-
this.nStartPos = nStart; N3%*7{X
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this.nEndPos = nEnd; q0./O|Dj
nThreadID = id; .H~YI
fileAccessI = new FileAccessI(sName,nStartPos);//定位 7\Fs=\2l+'
} 0L#/lDNk
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public void run() JOD/Raq.1k
{ Ig \#f
while(nStartPos < nEndPos && !bStop) E[g*O5
{ QlEd6^&
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try{ 42+#<U7T
URL url = new URL(sURL); A.En+-[\
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); QDTNx!WL
httpConnection.setRequestProperty("User-Agent","NetFox"); Kq)MTlP0g
String sProperty = "bytes="+nStartPos+"-"; I#G0, &Gv
httpConnection.setRequestProperty("RANGE",sProperty); Eu,`7iQ?(
Utility.log(sProperty); pqR\>d0
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InputStream input = httpConnection.getInputStream(); ?LP9iY${
//logResponseHead(httpConnection); u:dx;*
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byte[] b = new byte[1024]; :/N+;- 18
int nRead; /*rhtrS)
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) QHlU|dR)Ry
{ #hw>tA6
nStartPos += fileAccessI.write(b,0,nRead); d~9!,6XM
//if(nThreadID == 1) Z(GfK0vU
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); W|5_$p
} Um.qRZ?
ae+*=,
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Utility.log("Thread " + nThreadID + " is over!"); o{WyQ&2N
bDownOver = true; n<7q`tM#
//nPos = fileAccessI.write (b,0,nRead); v)X\GmW7w
} W+=o&V
catch(Exception e){e.printStackTrace ();} *d*,Hqn
} hdma=KqZ(
} <q2?S
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//打印回应的头信息 ZH 6\><My
public void logResponseHead(HttpURLConnection con) l.+yn91%>
{ 3V<&|
for(int i=1;;i++) L{fFC%|l2L
{ Hi}RZMr1
String header=con.getHeaderFieldKey(i); $E!J:Y=
if(header!=null) j\&pej
//responseHeaders.put(header,httpConnection.getHeaderField(header)); # Su~`]
Utility.log(header+" : "+con.getHeaderField(header)); Zjh2{ :
else cr;`Tl~}s
break; +^|iZbZKx
} aSutM
} 0<p{BL8
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public void splitterStop() \cJa;WM>
{ PkuTg";
bStop = true; (5Nv8H8|
} >SbK.Q@ei
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} 9i q""
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/* c3TKl/
**FileAccess.java G&f8n
*//文件访问(定位,写) 4Y \wnwI
package NetFox; <n"C,
import java.io.*; Nf41ZT~
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public class FileAccessI implements Serializable{ K4ZolWbU
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//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 s%4M$e
RandomAccessFile oSavedFile; RW'nUL?_\
long nPos; /iaf ^
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public FileAccessI() throws IOException SGL|Ck
{ [{u(C!7L`
this("",0); ?#A]{l
} 8hanzwoJ:
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public FileAccessI(String sName,long nPos) throws IOException +j14Q$
{ !~i'
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oSavedFile = new RandomAccessFile(sName,"rw"); Z~
this.nPos = nPos; 4'1m4Ugg
oSavedFile.seek(nPos); /b#l^x:j
} Ta=s:trP
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public synchronized int write(byte[] b,int nStart,int nLen) W!Gdf^Yy<
{ (.Y/
int n = -1; rh*sbZ68>E
try{ 1Tp/MV/>
oSavedFile.write(b,nStart,nLen); $g9**b@
n = nLen; }n:?7
} >R,'5:Rw
catch(IOException e) U&Wwyu:4i
{ pmvT$;7I
e.printStackTrace (); ^"\s eS
} 8)*2@-Rp
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return n; K6JVg$
} ] ]U<UJ
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} !|waK~jK
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/* @oP_;G
**SiteInfoBean.java #65^w=Sp}
*/ CbBSFKM
package NetFox; e> rRTN
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public class SiteInfoBean { \2-@' ^i
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private String sSiteURL; //Site's URL k,F"-K+M
private String sFilePath; //Saved File's Path POI.]1i
private String sFileName; //Saved File's Name :,12")N
private int nSplitter; //Count of Splited Downloading File ]
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public SiteInfoBean() Jq.lT(E8D
{//nSplitter的缺省值为5 O=cxNy-I
//default value of nSplitter is 5 u6V/JI}g
this("","","",5); MB
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} j1 q[2'
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) pL=d% m.W
{ mMx ;yZ
sSiteURL= sURL; !rDdd%Z
sFilePath = sPath; D%mXA70
sFileName = sName; W1Lr_z6
this.nSplitter = nSpiltter; +6$g!S5{
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} r[(xjn
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public String getSSiteURL() c
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{ yq-=],h
return sSiteURL; 5RH2"*8T
} k#Of]mXXz
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public void setSSiteURL(String value) PP~rn fE
{ 0_P}z3(M
sSiteURL = value; anw}w!@U
} #PDf,^
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public String getSFilePath() /iNa'W5\
{ >SN|?|2U/
return sFilePath; 9Etz:?)b
} iI@jZVk
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public void setSFilePath(String value) )Au6Nf
{ "vCM}F
sFilePath = value; s5.AW8X=?*
} 5ercD
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public String getSFileName() u<q :$
{ X8dR+xd
return sFileName; +;g{$da5
} JjpRHw8\
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