/* Y9K$6lz
**SiteFileFetch.java 0bt"U=x4
*/ \en}8r9cy
package NetFox; dg?[gD8!4&
import java.io.*; I\|x0D
import java.net.*; n>
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public class SiteFileFetch extends Thread { wP <)
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SiteInfoBean siteInfoBean = null; //文件信息Bean #:5vN-9?
long[] nStartPos; //开始位置 0)?.rthk4S
long[] nEndPos; //结束位置 kp4(_T7R
FileSplitterFetch[] fileSplitterFetch; //子线程对象 =y>g:}G7
long nFileLength; //文件长度 j?YZOO>X
boolean bFirst = true; //是否第一次取文件 k$u/6lw]IB
boolean bStop = false; //停止标志 b/I_iJ8t
File tmpFile; //文件下载的临时信息 *s"dCc
DataOutputStream output; //输出到文件的输出流 (}|QSf:
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) %O!~!'
public SiteFileFetch(SiteInfoBean bean) throws IOException 7E-1
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{ S\F;b{S1
siteInfoBean = bean; )G
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//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); _Kw<4$0<p
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); B}(+\Q$I
if(tmpFile.exists ()) '4L0=G:A<q
{ me7?
bFirst = false; CXZO
read_nPos(); )Hp{8c
} JS&=V67[
else _"Bh
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{ :ziV3jRM
nStartPos = new long[bean.getNSplitter()]; O=9mLI6
nEndPos = new long[bean.getNSplitter()]; p7\}X. L
} W6d[v/+K+
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public void run() Yb~[XS |p
{ /hojm6MM
//获得文件长度 7AE)P[
//分割文件 "wB~*,Ny
//实例FileSplitterFetch I1IuvH6
//启动FileSplitterFetch线程 jmDQKqEc|l
//等待子线程返回 N<e=!LV
try{ '\&t3?;
if(bFirst) z^KMYvH
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{ e)Be*J]4
nFileLength = getFileSize(); " ^t3VjN
if(nFileLength == -1) u+&t"B
{ &at^~o
System.err.println("File Length is not known!"); jlf.~vt
} xUiSAKrcM
else if(nFileLength == -2) c%5G3j
{ &Ow[
System.err.println("File is not access!"); .??[qBOTE
} KKPQ[3g
else !c;Z<@
{ #LGAvFA*_F
for(int i=0;i<nStartPos.length;i++) K%+[2Hj2
{ ~w&_l57
nStartPos = (long)(i*(nFileLength/nStartPos.length)); 8:x{
} .+;;-]})
for(int i=0;i<nEndPos.length-1;i++) AB!P(
{ wVSk.OOB
nEndPos = nStartPos[i+1]; vy
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} u@;6r"8q
nEndPos[nEndPos.length-1] = nFileLength; Y[hTO.LF
} GE2^v_
} OwdA6it^f
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//启动子线程 qqmhh_[T
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; G,VTFM6
for(int i=0;i<nStartPos.length;i++) J
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{ iiWs]5
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), MDHTZ94\Q
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), j~|pSu.<
nStartPos,nEndPos,i); Zj(2$9IU
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos);
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fileSplitterFetch.start(); X^?M4
} r#%e$
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), dB{VY+!
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 7S
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// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", tAI<[M@
nEndPos = " + nFileLength); D 7D:?VoR
// fileSplitterFetch[nPos.length-1].start(); |f:1Br
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7K 8tz}
//等待子线程结束 kw%vO6"q(
//int count = 0; #J=@} S)
//是否结束while循环 sPu@t&$
boolean breakWhile = false; :o)4Y
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while(!bStop) }m`+E+T4
{ (M>[D!Yt
write_nPos(); 8Pkw'.r
Utility.sleep(500); 'aW}&!H M
breakWhile = true; pb\W7G
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for(int i=0;i<nStartPos.length;i++) *0*1.>Vg
{ LD.^.4{c:
if(!fileSplitterFetch.bDownOver) ._ 6|epJ#
{ x#-+//
breakWhile = false; M%\=Fb
break; -naj.omG|
} y<Z-f.
} l]bCt b%_
if(breakWhile) uT#MVv~ .
break; 2[O\"a%
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//count++; p+t79F.js
//if(count>4) ggy 7p44
// siteStop(); `T-lBwH
} ,h#U<CnP#
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System.err.println("文件下载结束!"); p^E}%0#
} T%opkyP>=
catch(Exception e){e.printStackTrace ();} FL,av>mV
} zvDg1p
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//获得文件长度 |X'Pa9u
public long getFileSize()
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{ "EE=j$8u+
int nFileLength = -1; {m<NPtp910
try{ lrE|>R
URL url = new URL(siteInfoBean.getSSiteURL()); z .xOT;t
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); =VctG>ct|
httpConnection.setRequestProperty("User-Agent","NetFox"); \0^ZNa?
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int responseCode=httpConnection.getResponseCode(); W l4T}j
if(responseCode>=400) c^$+=-G{fd
{ (I) e-1
processErrorCode(responseCode); PN +<C7/
return -2; //-2 represent access is error fV\ eksBF
} L,
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String sHeader; .2si[:_(p
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for(int i=1;;i++) B F,rZZL
{ dp&bcR)
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); .&Vyo<9Ck
//Utility.log(in.readLine()); #hNp1y2
sHeader=httpConnection.getHeaderFieldKey(i); tSZd0G<A<o
if(sHeader!=null) 5 GwXZ;(G
{ N?7vcN+-t)
if(sHeader.equals("Content-Length")) X53TFRxnT
{ 0(
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); w'Cn3b)`
break; 5T,In+~Kd
} P/'9k0zs)
} j.5;0b_L^
else q*h1=H52
break; :=0XT`iY
} @aA1=9-L
} -quWnn/
catch(IOException e){e.printStackTrace ();} CQLh;W`Dc
catch(Exception e){e.printStackTrace ();} XO=UKk+EK
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Utility.log(nFileLength); p
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return nFileLength; jv"^_1
} y[}O(
) ny,vcU]
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//保存下载信息(文件指针位置) T}?vp~./
private void write_nPos() w'Kc#2
{ ddR_+B*H
try{ w84
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output = new DataOutputStream(new FileOutputStream(tmpFile)); E
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output.writeInt(nStartPos.length); Cw=wU/)
for(int i=0;i<nStartPos.length;i++) dXe.
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{ ,r,~1oV<"
// output.writeLong(nPos); w(P\+ m <%
output.writeLong(fileSplitterFetch.nStartPos); UacGq,
output.writeLong(fileSplitterFetch.nEndPos); ATeXOe
} A5lP%&tu(
output.close(); 3,snx4q
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} pY3N7&m\:
catch(IOException e){e.printStackTrace ();} Ozygr?*X
catch(Exception e){e.printStackTrace ();} ~okIiC]#
} bi fi02
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//读取保存的下载信息(文件指针位置) ~)S Q{eK?&
private void read_nPos() pearf2F
{ ^jO$nPDd
try{ $ljgFmR_
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ?|i6]y=D
int nCount = input.readInt(); /f_c?|
nStartPos = new long[nCount]; J.`z;0]op
nEndPos = new long[nCount]; KAR XC,z
for(int i=0;i<nStartPos.length;i++) j15TavjGh
{ ^UF]%qqOn
nStartPos = input.readLong(); fs]9H K/@\
nEndPos = input.readLong(); ,tEvz
} 8Ee bWs*1
input.close(); 6zQ {Y"0
} A%VBBvk
catch(IOException e){e.printStackTrace ();} A2`QlhZ
catch(Exception e){e.printStackTrace ();} bb6
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} ;|2h&8yX(/
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private void processErrorCode(int nErrorCode) u@`)u#
{ cx]O#b6B.
System.err.println("Error Code : " + nErrorCode); ZKGS?z
} $z7[RLu0!
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//停止文件下载 '~-Lxvf'
public void siteStop() !;SpQ28
{ WC!b B
bStop = true; E)Z$7;N0x
for(int i=0;i<nStartPos.length;i++) 8ycmvpJ
fileSplitterFetch.splitterStop(); )shzJ9G
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} W|U!kqU
} h(,SAY_
//负责部分文件的抓取 hT&,5zaWdv
**FileSplitterFetch.java {&Kq/sRz
*/ 5zlgmCGow
package NetFox; guC/eSxv
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import java.io.*; r<;bArs-u
import java.net.*; W{OlJRX8
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public class FileSplitterFetch extends Thread { eSynw$F2N
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String sURL; //File URL YyX/:1 sg>
long nStartPos; //File Snippet Start Position \TG!M]D:
long nEndPos; //File Snippet End Position n:?fv=9n
int nThreadID; //Thread's ID ^4LkKYMS
boolean bDownOver = false; //Downing is over F|*{Ma
boolean bStop = false; //Stop identical R
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FileAccessI fileAccessI = null; //File Access interface a;Ic!:L
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException =*.Nt*;;
{ 4z-sR/ d
this.sURL = sURL; EXDtVa Ot
this.nStartPos = nStart; j%iz>
this.nEndPos = nEnd; dbkccO}WB
nThreadID = id; %3e}YQe)
fileAccessI = new FileAccessI(sName,nStartPos);//定位 \?[#>L4
} 3,j)PKf
;
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public void run() PsDks3cG
{ ?)#dP8n
while(nStartPos < nEndPos && !bStop) b 2n.v.$G
{ p\o=fcH%E
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try{ J/j1Yf'9
URL url = new URL(sURL); 09"C&X~
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); wVBY^TE
httpConnection.setRequestProperty("User-Agent","NetFox"); w>T1D
String sProperty = "bytes="+nStartPos+"-"; eI?<*
httpConnection.setRequestProperty("RANGE",sProperty); ^*C+^l&J!
Utility.log(sProperty); sXI_!)H
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InputStream input = httpConnection.getInputStream(); Ebp^-I9.d
//logResponseHead(httpConnection); 8NJ(l
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byte[] b = new byte[1024]; 2Z6#3~
int nRead; RqW
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while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) lhTjG,U=
{ ~=HN30
nStartPos += fileAccessI.write(b,0,nRead); ?eT^gWX
//if(nThreadID == 1) #d%'BUde
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); <Mo_GTOC!
} q{ov62t`
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Utility.log("Thread " + nThreadID + " is over!"); _3h(R`VdWO
bDownOver = true; m;{_%oQ;
//nPos = fileAccessI.write (b,0,nRead); E;~gQ6vAI
} (7x5
catch(Exception e){e.printStackTrace ();} I,vy__sZ
} $ud5bT{n
} C$\|eC j
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//打印回应的头信息 ,St#/tu
public void logResponseHead(HttpURLConnection con) >e*m8gm#
{ 6}
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for(int i=1;;i++) QRXsLdf$$
{ O>xGH0H
String header=con.getHeaderFieldKey(i); =6imrRaaV
if(header!=null) KDgJ~T
//responseHeaders.put(header,httpConnection.getHeaderField(header)); a ^<W
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Utility.log(header+" : "+con.getHeaderField(header)); T5NO}bz
else O5{!CT$
break; ^ruS
} t>f<4~%MJ
} UA/Q3)
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public void splitterStop() esx<feP)\
{ AU} e^1h
bStop = true; y7dnXO!g9-
} ,i#]&f`c;5
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} ~T>_}Q[M2p
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/* G!T)V2y
**FileAccess.java vC[)/w
*//文件访问(定位,写) 7$WO@yOsh
package NetFox; d_gm'
import java.io.*; F=yrqRS=
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public class FileAccessI implements Serializable{ G^!20`p:
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//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 L)&?$V
RandomAccessFile oSavedFile; CUfD[un2D
long nPos; Um]>B`."wK
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public FileAccessI() throws IOException cW;to Q!P
{ /=>z|?z3
this("",0); :M9'wg
} n^'ip{
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public FileAccessI(String sName,long nPos) throws IOException ]=of=T:
{ ==`K$rM
oSavedFile = new RandomAccessFile(sName,"rw"); [[P?T^KT
this.nPos = nPos; yZ)GP!cM4c
oSavedFile.seek(nPos); `YAqR?Xj_<
} %5 0}oD@
P}N%**>`
}legh:/*?O
public synchronized int write(byte[] b,int nStart,int nLen) %YG ~ql
{ GJai!$v
int n = -1; PF*<_p" j
try{ Q]Q i
oSavedFile.write(b,nStart,nLen); `DIIJ<;g
n = nLen; ^-cj=on=Q
} hNmC(saMGm
catch(IOException e) A
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{ GLQ1rT
e.printStackTrace (); JDfkm+}uY
} |4aV~n[>#
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return n; LOpnPH`
} qEPvV
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} ]]`hnzJX
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/* \k / N/&;
**SiteInfoBean.java t%ye:
*/ f1(V~{N,+
package NetFox; c<