/* h~(D@/tB
**SiteFileFetch.java Vg>( Y,
*/ #Ap;_XcKw
package NetFox; K"0PTWt
import java.io.*; ph_4q@
import java.net.*; KrXdnY8
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public class SiteFileFetch extends Thread { Qhw^S*
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SiteInfoBean siteInfoBean = null; //文件信息Bean PZm:T+5H
long[] nStartPos; //开始位置 Da v PYg
long[] nEndPos; //结束位置 V %_4%
FileSplitterFetch[] fileSplitterFetch; //子线程对象 jC3Vbm&ZZ
long nFileLength; //文件长度 !p[9{U->o;
boolean bFirst = true; //是否第一次取文件 =r.mlc``W
boolean bStop = false; //停止标志 `c69?/5
File tmpFile; //文件下载的临时信息 E%'~'[Q
DataOutputStream output; //输出到文件的输出流 0V{(Ru.O
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) S<L.c
public SiteFileFetch(SiteInfoBean bean) throws IOException tU^kQR!
{ HoLv`JA
siteInfoBean = bean; 8NU`^L:1
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); #CnHf
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 8srBHslI
if(tmpFile.exists ()) g
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{ Bcjx>#3?L
bFirst = false; 90#
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read_nPos(); LT~YFS
} _6k*'aT~FK
else `g_"GE
{ c=[O
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nStartPos = new long[bean.getNSplitter()]; {66fG53x
nEndPos = new long[bean.getNSplitter()]; N,J9Wu ZJ\
} ;),BW g
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} i,nm`Z>u
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public void run() a6h>=uT [
{ 97,rE$bC
//获得文件长度 <|*'O5B
//分割文件 lg}HGG
//实例FileSplitterFetch |T4kqW{
//启动FileSplitterFetch线程 gUAxyV
//等待子线程返回 tURc bwV
try{ jhGlG-^
if(bFirst) {3Y )rY!z
{ 1
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nFileLength = getFileSize(); '>k{tPi.
if(nFileLength == -1) 2T)sXB u
{ zD)pF1,7:8
System.err.println("File Length is not known!"); /:\3 \{?0m
} OI0B:()
else if(nFileLength == -2) vZ#!uU^a:
{ -.<k~71
System.err.println("File is not access!"); $>R(W=Q
} }K(o9$V ^!
else ` r']^
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{ `aqrSH5^h
for(int i=0;i<nStartPos.length;i++) GOSI3RRn
{ 8yWoPm<A
nStartPos = (long)(i*(nFileLength/nStartPos.length)); Qpt&3_
} + q''y
for(int i=0;i<nEndPos.length-1;i++) r,N[ )@
{ 3"UsZyN:
nEndPos = nStartPos[i+1]; ^# A.@
} (X6sSO
nEndPos[nEndPos.length-1] = nFileLength; n^hocGH*
} (vJ2z
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} X['2b78k
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//启动子线程 CiL94Nkd9
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; S^f:`9ab9
for(int i=0;i<nStartPos.length;i++) a}d6o;li
{ m_!U}!
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 0ZC,BS`D^
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), p8, 0lo
nStartPos,nEndPos,i); W3Ulewa
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ]v5-~E!
fileSplitterFetch.start(); BN@,/m9OQ%
} Sd:.KRTu.
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), q2_`v5t
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ,vG<*|pn
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", @ERu>nSP
nEndPos = " + nFileLength); b0a}ME&1
// fileSplitterFetch[nPos.length-1].start(); EX?h0Uy
}.:d#]g8
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//等待子线程结束 djT.
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//int count = 0; zH'2s-.bi
//是否结束while循环
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boolean breakWhile = false; y,<$X.>QO|
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while(!bStop) 98*x 'Wp
{ wq4nMY:#
write_nPos(); 00M`%c/
Utility.sleep(500); 4^Ow^7N?
breakWhile = true; D{AFL.r{
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for(int i=0;i<nStartPos.length;i++) :HW>9nD.
{ FD6v/Y
if(!fileSplitterFetch.bDownOver) ;aK.%-s-Z
{ `)[dVfxA
breakWhile = false; -3mgza
break; /84bv=
} 7C5pAb:
} 3cu9[~K
if(breakWhile) h#{T}[
break; m4gU*?
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//count++; }
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//if(count>4) >I-g[*
// siteStop(); wZv-b*4
} lcig7%
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System.err.println("文件下载结束!"); *mV&K\_
} /p$=Cg[K
catch(Exception e){e.printStackTrace ();} bm}+}CJ@#0
} _j 5N=I{U
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//获得文件长度 qG^_c;l6a
public long getFileSize() cqk]NL`'
{ Y*\6o7
int nFileLength = -1; cDO:'-
try{ ]-KV0H
URL url = new URL(siteInfoBean.getSSiteURL()); !
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); +\U]p_Fo3
httpConnection.setRequestProperty("User-Agent","NetFox"); M@~o6 ^
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int responseCode=httpConnection.getResponseCode(); >i`8R
if(responseCode>=400) l% |cB93
{ 1uC;$Aj6:
processErrorCode(responseCode); 8{@`kyy|
return -2; //-2 represent access is error q\U4n[Zk
} <p)Z/
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String sHeader; p6[#f96^u
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for(int i=1;;i++) 2)?
{ \2Xx%SX
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); lY->ucS %P
//Utility.log(in.readLine()); 55,=[
sHeader=httpConnection.getHeaderFieldKey(i); Lb^(E-
if(sHeader!=null) u x#.:C|
{ f^u^-l
if(sHeader.equals("Content-Length")) jPpRsw>
{ E\_W
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); EFwL.'Fh
break; RZe#|k+
8
} vi<X3G6Xh
} 4XD)E&
else H):-!?:
break; *i%.{ YH
} =tNzGaWJ
} =Iy/cHK
catch(IOException e){e.printStackTrace ();} 7:h<`_HT(X
catch(Exception e){e.printStackTrace ();} ^~,
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Utility.log(nFileLength); 2q/nAQ+
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return nFileLength; tnN'V
} )F
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//保存下载信息(文件指针位置) z2.*#xTZn
private void write_nPos() Uld_X\;Q4
{ ([[)Ub$U
try{ ^g70AqUc
output = new DataOutputStream(new FileOutputStream(tmpFile)); Q6eN+i2 ;
output.writeInt(nStartPos.length); Y:rJK|m
for(int i=0;i<nStartPos.length;i++) c%jsu"
{ g)X7FxS,z
// output.writeLong(nPos); pn|p(6
output.writeLong(fileSplitterFetch.nStartPos); Sy4
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output.writeLong(fileSplitterFetch.nEndPos); ~."!l'a
} T=^jCH &
output.close(); nG!&u1*
} k\nH&nb
catch(IOException e){e.printStackTrace ();} >'eB2
catch(Exception e){e.printStackTrace ();} =d}gv6v2S
} P8"6"}B;T
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//读取保存的下载信息(文件指针位置) MRjH40"2
private void read_nPos() w'!ECm>*`
{ .4H_Zt[2
try{ fS5GICx8R
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); +ylxezc
int nCount = input.readInt(); N[0
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nStartPos = new long[nCount]; N$C{f;xV
nEndPos = new long[nCount]; qUifw @
for(int i=0;i<nStartPos.length;i++) &/sGh0
{ ".Lhte R?
nStartPos = input.readLong(); j#7wyi5q
nEndPos = input.readLong(); D/gd
} f-vZ2+HP
input.close(); `l+ >iM
} \d `dV0X
catch(IOException e){e.printStackTrace ();} l. XknF
catch(Exception e){e.printStackTrace ();} o9_(DJ<{
} M4zX*&w.T
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private void processErrorCode(int nErrorCode) kyy0&L
{ =$^Wkau
System.err.println("Error Code : " + nErrorCode); {z.[tvE8h
} >r;ABz/
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//停止文件下载 qgwv=5|
public void siteStop() o}WB(WsG
{ ^zvA?'s
bStop = true;
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for(int i=0;i<nStartPos.length;i++) AeNyZ[40T
fileSplitterFetch.splitterStop(); C>.]Bvg
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} ."~7 \E> t
} ExNj|*
//负责部分文件的抓取 cxtLy&C
**FileSplitterFetch.java BengRG[
*/ ?R|fS*e2EB
package NetFox; JK@izI
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S% JNxT7'
import java.io.*; 2uvQf&,
import java.net.*; ^m6k@VM
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public class FileSplitterFetch extends Thread { Jo6~r-
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String sURL; //File URL 3R)cbwL
long nStartPos; //File Snippet Start Position .\z|Fr
long nEndPos; //File Snippet End Position zznPD%#Sc
int nThreadID; //Thread's ID J{nyo1A
boolean bDownOver = false; //Downing is over +zFV~]b
boolean bStop = false; //Stop identical pRQfx^On
FileAccessI fileAccessI = null; //File Access interface *kX3sG$8
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException
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{ ?=;e.qK=71
this.sURL = sURL; K#9(|2J%
this.nStartPos = nStart; BiHiVhD_
this.nEndPos = nEnd; 2a._?(k_y
nThreadID = id; XEf&Yd
fileAccessI = new FileAccessI(sName,nStartPos);//定位 aBqe+FXp4
} {V]Qwz)1
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public void run() F:*[
{ T3u5al
while(nStartPos < nEndPos && !bStop) Dyouk+08x
{ }#\;np
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try{ Z30z<d,j
URL url = new URL(sURL); /XWPN(JC?
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); SQ~N X)
httpConnection.setRequestProperty("User-Agent","NetFox"); C0t+Q
String sProperty = "bytes="+nStartPos+"-"; *f0.= ?
httpConnection.setRequestProperty("RANGE",sProperty); v
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Utility.log(sProperty); E]u'MX
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InputStream input = httpConnection.getInputStream(); )5GdvqA
//logResponseHead(httpConnection); /c_kj2& ]9
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byte[] b = new byte[1024]; UALg!M#
int nRead; Ry8WNVO}R
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) DmXDg7y7s
{ r3c\;Ra7
nStartPos += fileAccessI.write(b,0,nRead); MUCJ/GF*
//if(nThreadID == 1) 7+D'W7Yx
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); aCUV[CPw
} h-2E9Z
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Utility.log("Thread " + nThreadID + " is over!"); +QXYU8bYZ
bDownOver = true; qa0JQ_?o]
//nPos = fileAccessI.write (b,0,nRead); 9p[W :)P4d
} WB=<W#?w7%
catch(Exception e){e.printStackTrace ();} [KimY
} *xv/b=
} XD+cs.{5
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//打印回应的头信息 +}(B856+
public void logResponseHead(HttpURLConnection con) 3Q*RR"3
{ l9ifUhe
for(int i=1;;i++) +4:+qGAJ{
{ LKqog%,c
String header=con.getHeaderFieldKey(i); }lNufu
if(header!=null) 4M0v1`k
//responseHeaders.put(header,httpConnection.getHeaderField(header)); #a'x)$2;R|
Utility.log(header+" : "+con.getHeaderField(header)); 2ucF(^
else #hE3~+i
break; V&,<,iNN
} :WfB!4%!
} e@2Vn? 5
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public void splitterStop() O 44IH`SI
{ X,!OWz:[
bStop = true; L1Cn
} ^pQ;0[9Y0
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} qT<qu(V:
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/* WlQ&Yau
**FileAccess.java xwH|ryfs,Z
*//文件访问(定位,写) VrGb;L'[
package NetFox; #g`cih=QL
import java.io.*; oIL+@}u7
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public class FileAccessI implements Serializable{ iJaNP%N
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//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 @#--dOWYR
RandomAccessFile oSavedFile; ^a#&wW
long nPos; p:Ld)U *
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public FileAccessI() throws IOException zm3MOH^a
{ f_P+qm
this("",0); -IsdU7}
} 7F9g:r/^
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public FileAccessI(String sName,long nPos) throws IOException I^\bS
{ .6Lhy3x
oSavedFile = new RandomAccessFile(sName,"rw"); |XdrO
this.nPos = nPos; 0)Xue9AS
oSavedFile.seek(nPos); ^s2-jkK
} `# M.t);^
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public synchronized int write(byte[] b,int nStart,int nLen) 4C9"Q,o%&
{ |&RX>UW$W
int n = -1; 8YLZ)k'
try{ w@$o
oSavedFile.write(b,nStart,nLen); %b%<g%@i
n = nLen; |VR5Q(d
} =qR7-Q8B
catch(IOException e) k+GK1Yl
{ AXv;r<
e.printStackTrace (); ?gMrcc/{
} D&6Qk&>
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return n; v4a4*rBI"
} e}yu<~v_
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} Y+`-~ 88
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/* DCzPm/#b
**SiteInfoBean.java +C;#Qf
*/ {1U*:@j
package NetFox; glX2L~
+|)#yE$aMh
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public class SiteInfoBean { 3[i!2iL.
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private String sSiteURL; //Site's URL E0A|+P
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private String sFilePath; //Saved File's Path Vd>.fb\U2
private String sFileName; //Saved File's Name +9F#~{v`4a
private int nSplitter; //Count of Splited Downloading File 4_0/]:~5
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public SiteInfoBean() J9c3d~YW
{//nSplitter的缺省值为5 {,2_K6#
//default value of nSplitter is 5 |ylTy B
this("","","",5); 4
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} LA %al @
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) XJ/kB8
{ zP'pfBgbJW
sSiteURL= sURL; lBZ*G
sFilePath = sPath; yzR=:0J
sFileName = sName; 4lUE(#kUM
this.nSplitter = nSpiltter; Cwf$`?|W
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} wggHUr(g,
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public String getSSiteURL() 8'Bl=C|0X
{ ^Es)?>eah
return sSiteURL; c} ET#2,
} iB`]Z@ZC
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public void setSSiteURL(String value) o xu9v/
{ =,G(1#
sSiteURL = value; rL3Vogw'e
} DC7}Xly(
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public String getSFilePath() (k.7q~:
{ iquGLwJ
return sFilePath; yS3s5C{C
} =Fl4tY#X
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public void setSFilePath(String value) 7N=VVD~!b
{ =@XR$Uud6
sFilePath = value; 0\*<k`dY
} mLA$F4/K
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public String getSFileName() $Ws2g*i
{ 4jro4B`
return sFileName; :''0z
} W78-'c
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public void setSFileName(String value) 7}.(EZ0
{ *.l=>#qF
sFileName = value; (@ sKE
} z#
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public int getNSplitter() dUSuhT
{ R.;59s
return nSplitter; epm|pA*
} y&]D2"I
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public void setNSplitter(int nCount) !!%F$qUd\
{ ABGL9;.8
nSplitter = nCount; sOmYQ{R
} &>{L"{
} XW:(FzF
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/* !<ucwWY,
**Utility.java b\mN^P~>A
*/ ly+7klQ;.
package NetFox; 0@;E8^pa
,0xN#&?Ohh
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public class Utility { *L_wRhhk
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public Utility() HtlXbzN%)
{ ><HXd+- sd
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} ;$]R#1i44
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//线程睡眠 EIAT*l :NW
public static void sleep(int nSecond) k9
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{ 2J$Uz,@
try{ V-57BKeDz
Thread.sleep(nSecond); %'
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} 0vEa]ljS
catch(Exception e) =n!8>8d
{ APya&