/* AbcmI*y
**SiteFileFetch.java ;'p X1T
*/ ?v8B;="#w
package NetFox; VL7zU->
import java.io.*; OfbM]:}<3
import java.net.*; u
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public class SiteFileFetch extends Thread { 5 S7\m5
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SiteInfoBean siteInfoBean = null; //文件信息Bean _+.z2} M
long[] nStartPos; //开始位置 .ye5;A}
long[] nEndPos; //结束位置 @1^iWM j
FileSplitterFetch[] fileSplitterFetch; //子线程对象 gy_n=jhi+
long nFileLength; //文件长度 52{jq18&
boolean bFirst = true; //是否第一次取文件 /$/\$f$
boolean bStop = false; //停止标志 OB;AgE@
File tmpFile; //文件下载的临时信息 LtXFGPQ f
DataOutputStream output; //输出到文件的输出流 V~NS<!+q
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) fW <qp
public SiteFileFetch(SiteInfoBean bean) throws IOException 7?Xfge%\
{ e9o(hL
siteInfoBean = bean; Cq}LKiu
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); "<txg%j\J
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); _ N.ZpKVu
if(tmpFile.exists ()) hXmW,+1
{ rnEWTk7&
bFirst = false; L+9a4/q
read_nPos(); U3ED3)
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} UXR$ 7<D+
else pV:X_M6
{ Mp7r`A,6
nStartPos = new long[bean.getNSplitter()]; rP^2MH"
nEndPos = new long[bean.getNSplitter()]; zG+oZ
} kYmkKl_
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} Nq9@^ E-{M
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public void run() ]* ':
{ EX|Wd|aK
//获得文件长度 U43PHcv_
//分割文件 lJ:B9n3OzT
//实例FileSplitterFetch k
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//启动FileSplitterFetch线程 $:{uF#
//等待子线程返回 AW%^Xt
try{ ]M-j_("&
if(bFirst) z;2kKQZm
{ NIQNzq?a^
nFileLength = getFileSize(); bTb|@
if(nFileLength == -1) 8! pfy"
{ j@&F[ r
System.err.println("File Length is not known!"); D}&U3?g=
} tb"UGa
else if(nFileLength == -2) v`*!Bhc-
{ "b|qyT* Sl
System.err.println("File is not access!"); = 0Z}s
} ./rNq!*a
else yAW%y
{ <x53b/ft
for(int i=0;i<nStartPos.length;i++) [?.k 8;k
{ r@/+
nStartPos = (long)(i*(nFileLength/nStartPos.length)); |z-A;uL <
} v0apEjT
for(int i=0;i<nEndPos.length-1;i++) &3:-(:<U
{ '>@evrG
nEndPos = nStartPos[i+1]; }BzV<8F
} TMT65X!
nEndPos[nEndPos.length-1] = nFileLength; /!P,o}l7
} >E^sZmY[f-
} ri.;&
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//启动子线程 Dc}-wnga
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; q~T*R<S
for(int i=0;i<nStartPos.length;i++) !Hr~B.f7
{ &?#V*-;^
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), HX7"w
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 1\$xq9
nStartPos,nEndPos,i); W{*U#:Jx1
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); wC}anq>>
fileSplitterFetch.start(); &) T5V
} J)"2^?!&B
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), l*e*jA_>:7
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); a[1^)=/DM
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 5.q2<a :
nEndPos = " + nFileLength); |p-, B>p!
// fileSplitterFetch[nPos.length-1].start(); to|O]h2*U2
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//等待子线程结束 J4;w9[a$
//int count = 0; g~rZ=
//是否结束while循环 :54ik,l
boolean breakWhile = false; LkK%DY
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while(!bStop) %-/[.DYt
{ =e$<["
write_nPos(); 1~zzQ:jAZ
Utility.sleep(500); K7 -AVMY
breakWhile = true; 64fa0j~<*M
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for(int i=0;i<nStartPos.length;i++) *:{s|18Pj
{ |D~mLs;&
if(!fileSplitterFetch.bDownOver) RXxi7^ U
{
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breakWhile = false; FAX|.!US*p
break; nm`[\3R
} (y*7
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} >B!E 6ah
if(breakWhile) ,.A@U*j
break; >-*rtiE
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//count++; 6!*be|<&
//if(count>4) <2"' R(4",
// siteStop(); #>iBu:\J
} ywTt<;
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System.err.println("文件下载结束!"); bA!n;
} w$[&ejFb
catch(Exception e){e.printStackTrace ();} }E0~'
} :tBIo7
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//获得文件长度 `u$
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public long getFileSize() VHyH't_&s
{ X'Q?Mh
int nFileLength = -1; e=Ko4Ao2y
try{ <`rmQ`(}s
URL url = new URL(siteInfoBean.getSSiteURL()); %A64AJZ
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); P{fT5K|
httpConnection.setRequestProperty("User-Agent","NetFox"); ~"|MwR!0
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int responseCode=httpConnection.getResponseCode(); n_QSuh/Wn
if(responseCode>=400) [U]^:sV)
{ QxS]6hA
processErrorCode(responseCode); xY4g2Q
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return -2; //-2 represent access is error @+Yql
} SQ'\K d=
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String sHeader; )Q= EmZbJz
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for(int i=1;;i++) Pt5"q3ec{T
{ A0X'|4I
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 2^ uP[
//Utility.log(in.readLine()); kb3>q($
sHeader=httpConnection.getHeaderFieldKey(i); +q n[F70}
if(sHeader!=null) 3r^Ls[ey
{ S!WG|75B
if(sHeader.equals("Content-Length")) C0C2]xx{
{ bpP-wA^Hd
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); K|L&mL&8
break; ;>hRj!
} B|d-3\sn
} :m.6a4vx
else &s6;2G&L$
break; b'q ru~i
} X* 4C?v
} 43wm_4C!H
catch(IOException e){e.printStackTrace ();} xmVW6 ,<?
catch(Exception e){e.printStackTrace ();} H=lzW_(
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Utility.log(nFileLength); o8 _))
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return nFileLength; yz}ik^T
} OSoIH`tA
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//保存下载信息(文件指针位置) ncGt-l<9
private void write_nPos() #`]`gNB0Yg
{ Cv[_N%3[
try{ J.;!l
output = new DataOutputStream(new FileOutputStream(tmpFile)); AQ%B&Q(V1
output.writeInt(nStartPos.length); K g6hySb
for(int i=0;i<nStartPos.length;i++) GFGW'}w-
{ izDfpr}s4
// output.writeLong(nPos); m^!Kthq
output.writeLong(fileSplitterFetch.nStartPos); 0<i8
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output.writeLong(fileSplitterFetch.nEndPos); i?wEd!=w
} T.(C`/VM
output.close(); '\B0#z3
} r4 $<,~
catch(IOException e){e.printStackTrace ();} rEHlo[7^
catch(Exception e){e.printStackTrace ();} o|G'vMph
} $^:s)Yv
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//读取保存的下载信息(文件指针位置) 2dsXG$-W2
private void read_nPos() f9K+o-P.h
{ 7D(Eo{ue
try{ KvjsibI/Y
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); S>Z07d6 &
int nCount = input.readInt(); gV}c4>v(
nStartPos = new long[nCount]; ~P7zg!p/q
nEndPos = new long[nCount]; LZtO Q__B)
for(int i=0;i<nStartPos.length;i++) &|-jU+r}B
{ |LV}kG(2
nStartPos = input.readLong(); *I:a\o~$[
nEndPos = input.readLong(); )\KU:_l
} ~xLo0EV"
input.close(); oRo[WQla
} ~4+ICCbH
catch(IOException e){e.printStackTrace ();} ]z O6ESH
catch(Exception e){e.printStackTrace ();} ;fW`#aE
} BOflhoUX
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private void processErrorCode(int nErrorCode) redMlHM
{ Sx:JuK@
System.err.println("Error Code : " + nErrorCode); 0fGt7 "Q
} xX?9e3(
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//停止文件下载 frokl5L@
public void siteStop() 2BKiA[
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{ kyi"U A82
bStop = true; ~|G`f\Ln"
for(int i=0;i<nStartPos.length;i++) 4|&_i)S-Y
fileSplitterFetch.splitterStop(); ::p%R@?
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} LC7%Bfn!
} o2D;EUsNX
//负责部分文件的抓取 ,|g&v/WlC%
**FileSplitterFetch.java )[ QT?;
*/ qeDXG
package NetFox; 5O(U1
*
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import java.io.*; EK.n
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import java.net.*; EfB.K}b^
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public class FileSplitterFetch extends Thread { IyEfisOK?
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String sURL; //File URL \sAkKPI
long nStartPos; //File Snippet Start Position o@ m7@$7
long nEndPos; //File Snippet End Position !K-qoBqKM
int nThreadID; //Thread's ID X$Shi
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boolean bDownOver = false; //Downing is over N\"Hf=Y(~
boolean bStop = false; //Stop identical mBxMDnh
FileAccessI fileAccessI = null; //File Access interface =Fc}T%
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException -_xTs(;|8
{ SP\s{,'F-b
this.sURL = sURL; ;VzdlCZ@
this.nStartPos = nStart;
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this.nEndPos = nEnd; I<Cm$8O?
nThreadID = id; 9n49p?
fileAccessI = new FileAccessI(sName,nStartPos);//定位 GkxQEL
} "Lyb4# M
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public void run() <*I*#WI&B
{ i[4!% FxB
while(nStartPos < nEndPos && !bStop) {Hie%2V
{ r $[{sW
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try{ vmv6y*qU
URL url = new URL(sURL); 0 .UN
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); baBPf{<
httpConnection.setRequestProperty("User-Agent","NetFox"); Q;ZV`D/FA
String sProperty = "bytes="+nStartPos+"-"; e7y,zcbv
httpConnection.setRequestProperty("RANGE",sProperty); SQ*%d.1
Utility.log(sProperty); c'XSs
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InputStream input = httpConnection.getInputStream(); D9H%jDv
//logResponseHead(httpConnection); 8>G5VhCm~o
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byte[] b = new byte[1024]; l9]nrT1Hy
int nRead; V$wbm z
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) g:.LCF
{ -'}#j\
nStartPos += fileAccessI.write(b,0,nRead); _>a`dp.19
//if(nThreadID == 1) yRi5t{!V
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); mo9(2@~<
} @HTs.4
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Utility.log("Thread " + nThreadID + " is over!"); /3.;sS]B
bDownOver = true; He$v'87]
//nPos = fileAccessI.write (b,0,nRead); )Y&B63]B
} RD0*]4>]
catch(Exception e){e.printStackTrace ();} KMG}VG
} 0}YadNb7
} +U<.MVOo.
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//打印回应的头信息 ~c55LlO>
public void logResponseHead(HttpURLConnection con) ~Y{]yBGoF
{ Lr20xm
for(int i=1;;i++) {3SK|J`
{ Q,:h`%V
String header=con.getHeaderFieldKey(i); +vH#xc\'
if(header!=null) R%~~'/2V
//responseHeaders.put(header,httpConnection.getHeaderField(header)); #V)l>
Utility.log(header+" : "+con.getHeaderField(header)); W9{;HGWS
else =jA.INin4
break; }O+S}Hbwy
} :#\jx
} ]<ay_w;
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public void splitterStop() ,S
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{ _dECAk
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bStop = true; C^LxJG{L5
} 4]E1x l
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} 9':Hh'
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Q );}1'c
/* 5z_Kkf?o
**FileAccess.java @+_pj.D
*//文件访问(定位,写) xSO5?eR"u
package NetFox; ~[kI![
import java.io.*; d|`8\fq
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public class FileAccessI implements Serializable{ z
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//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 Q<DXDvL
RandomAccessFile oSavedFile; >s!k"s,
long nPos; qG2P?D R
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public FileAccessI() throws IOException 4#t=%}
{ r[^O 7
this("",0); nEP3B'+
} _mQj=
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public FileAccessI(String sName,long nPos) throws IOException kpy)kS
{ dj4a)p|YN
oSavedFile = new RandomAccessFile(sName,"rw"); @HE?G
this.nPos = nPos; BlM(Q/z
oSavedFile.seek(nPos); U]B-B+-
} ar S@l<79
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public synchronized int write(byte[] b,int nStart,int nLen) YG5mzP<T
{ {$pi};
int n = -1; D(Q]ddUi'
try{ naA8RD5/
oSavedFile.write(b,nStart,nLen); sO!m,pK(
n = nLen; |9BX
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} c>T)Rc
catch(IOException e) LF)wn-C}
{ 0bD\`Jiv,
e.printStackTrace (); `,Y3(=3Xe?
} rmFcSolt,f
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return n; |oePB<N
} \@T;/Pj{[
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} h0A%KL
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/* yn20*ix{
**SiteInfoBean.java *y` (^kyS
*/ kw7E<aF!
package NetFox; U'~]^F%eyu
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public class SiteInfoBean { Mhb~wDQl
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private String sSiteURL; //Site's URL : w>R|]
private String sFilePath; //Saved File's Path R((KAl]dL
private String sFileName; //Saved File's Name i=hA. y`
private int nSplitter; //Count of Splited Downloading File NO/5pz}1
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public SiteInfoBean() 'F:Tv[qx
{//nSplitter的缺省值为5 gNkBHwv
//default value of nSplitter is 5 3Tc90p l*t
this("","","",5); FBOgaI83G
} Z^%HDB9^
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) cK\?wZ| Y
{ QF22_D<.}J
sSiteURL= sURL; 0HQTe>!
sFilePath = sPath; b&d4(dk
sFileName = sName; *iyc,f^w
this.nSplitter = nSpiltter; jR+kx:+
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} \JCpwNT{P
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public String getSSiteURL() Hq?dqg' %~
{ g:6`1C
return sSiteURL; ;RQ}OCz9}8
} u?>8`]r
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public void setSSiteURL(String value) 9/I
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{ ^ ]+vtk
sSiteURL = value; wS
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} [ L
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public String getSFilePath() ZXIz.GFy+
{ ",Fvv
return sFilePath; Sogt?]HB$
} vTWm_ed+^
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public void setSFilePath(String value) ~\<L74BB
{ 6['o^>\}f
sFilePath = value; S/l6c P
} #>sIXY
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public String getSFileName() )M"xCO3a
{ >LPIvmT4D?
return sFileName; ~8-xj6^
} 3BF3$_u)o
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public void setSFileName(String value) J: I@kM
{ h}DKFrHW;-
sFileName = value; S&D8Rao5
} N&|,!Cu
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public int getNSplitter() ;0uiO.
{ l|;]"&|_]c
return nSplitter; %J9+`uSl
} .S* sGauM
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public void setNSplitter(int nCount) R D?52\
{ PY&mLux%
nSplitter = nCount; m3&