/* xjpW<-)MLf
**SiteFileFetch.java r[x7?cXsW
*/ *bx cq
package NetFox; .z"[z^/uF
import java.io.*; :lAR;[WFS
import java.net.*; 4/4IZfznX
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public class SiteFileFetch extends Thread { *))|ZE6jI
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SiteInfoBean siteInfoBean = null; //文件信息Bean Sa0\93oa
long[] nStartPos; //开始位置 0Ju{6x(|
long[] nEndPos; //结束位置 >Vvc55z
FileSplitterFetch[] fileSplitterFetch; //子线程对象 Evc
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long nFileLength; //文件长度 &}r932
boolean bFirst = true; //是否第一次取文件 KB^IGF
boolean bStop = false; //停止标志 5eYCnc9
File tmpFile; //文件下载的临时信息 1^COR+>L
DataOutputStream output; //输出到文件的输出流 ?=l(29tH
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) B06/mKZ7
public SiteFileFetch(SiteInfoBean bean) throws IOException y}VKFRky
{ iq#Z\Y(
siteInfoBean = bean; T1E=<q4
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); - M]C-$
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 9SPu 4i
if(tmpFile.exists ()) |Bid(`t.
{ 5>HI/QG
bFirst = false; PJLA^e C7>
read_nPos(); "7g: u-
} qv:WC
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else SO)??kQ{U
{ 2+enRR~
nStartPos = new long[bean.getNSplitter()]; h5JXKR.1]c
nEndPos = new long[bean.getNSplitter()]; ll#PCgIm
} iAN#TCwLT7
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} (.c?)_G,
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public void run() (n<xoV[e
{ 46vz=# ,6L
//获得文件长度 <1y%ch;
//分割文件 UX?_IgJh<"
//实例FileSplitterFetch 0V^?~ex
//启动FileSplitterFetch线程 Abl=Ev
//等待子线程返回 B 5?(gb"
try{ p7*\]HyE)
if(bFirst) &"BKue~q@p
{ ,FTF@h-Cs
nFileLength = getFileSize(); 8wBns)wy @
if(nFileLength == -1) |^1eL I
{ qRUz;M4
System.err.println("File Length is not known!"); yoH6g?!O
} 'D1@+FFU0
else if(nFileLength == -2) X#J[Nn>
{ CB~&!MdMr
System.err.println("File is not access!"); Bpgl
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} ,YoIn
else Gqs8$[o
{ hi37p1t
for(int i=0;i<nStartPos.length;i++) cIgF]My*D@
{ 1G\ugLm
nStartPos = (long)(i*(nFileLength/nStartPos.length)); ~"-wSAm
} sB6UlX;b:
for(int i=0;i<nEndPos.length-1;i++) = *sP,
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{ ,Zdc
nEndPos = nStartPos[i+1]; t~Uqsa>n@'
} {DpZg",H-
nEndPos[nEndPos.length-1] = nFileLength; i_MDLS>-
} NmeTp?)m
} A >x{\
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//启动子线程 DI*xf
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fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 8]0^OSS
for(int i=0;i<nStartPos.length;i++) rO-Tr
{ #hai3>9|B
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Hi?],5,/
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), E_h 9y
nStartPos,nEndPos,i); cD{[rI
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Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); r6^DD$X
fileSplitterFetch.start(); 0c]Lm?&
} 6gp3n;D
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), IlwY5i L
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); E_xpq
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", mFvw s
nEndPos = " + nFileLength); `T-(g1:9
// fileSplitterFetch[nPos.length-1].start(); @A)gsDt9A
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//等待子线程结束 w_9:gprf
//int count = 0; }g3)z%Xe'[
//是否结束while循环 ;1BbRnCr
boolean breakWhile = false; 4b 4nFRnH
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while(!bStop) Z!#zr@'k
{ d/;oNC+
write_nPos(); 7Npz
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Utility.sleep(500); 39u!j|VH
breakWhile = true; #fa~^]EM]
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for(int i=0;i<nStartPos.length;i++) N?~K9jGx(
{ ;X\!*Loe
if(!fileSplitterFetch.bDownOver) NxNz(R
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{ )2\6Fy0S
breakWhile = false; N 4Dyec\
break; u%&zY97/
} &359tG0@P
} nkvzv
if(breakWhile) 6N]v9uXZ
break; ^oA^z1>3
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//count++; |,qz7dpe
//if(count>4) C7PHZ`<
// siteStop(); 1(C%/g#"
} 8TuOf(qE
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System.err.println("文件下载结束!"); Y(<>[8S m
} #A?U_32z/2
catch(Exception e){e.printStackTrace ();} a?@j`@]ZR~
} kRG-~'f%`
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//获得文件长度 [_${N,1
public long getFileSize() #SQFI;zj
{ T#T!a0
int nFileLength = -1; w(s"r p}
try{ eRD s?n3F
URL url = new URL(siteInfoBean.getSSiteURL()); mw.9cDf
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); JgEpqA12
httpConnection.setRequestProperty("User-Agent","NetFox"); aWW|.#L
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int responseCode=httpConnection.getResponseCode(); -p9|l%W
if(responseCode>=400) RzNv|
{ {V8v
processErrorCode(responseCode); ~GMlnA]6
return -2; //-2 represent access is error ~`T3 i
} \U,.!'+
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String sHeader; h@l5MH=|%
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for(int i=1;;i++) #m|AQr|
{ 6f0 WN
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Q;SMwCB0M
//Utility.log(in.readLine()); HJM- ;C](
sHeader=httpConnection.getHeaderFieldKey(i); ]*Zg(YA
if(sHeader!=null) |UE&M3S
{ ,D>$N3;
if(sHeader.equals("Content-Length")) "<NQ2Vr]5
{
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 03[(dRK>=
break; :jgwp~l
} mM1\s>o
} D.4=4"qMi
else #~ UG9@a
break; 9 *Q/3|
} b4i=eI8
} PWx2<t<;9
catch(IOException e){e.printStackTrace ();} &`GQS|
catch(Exception e){e.printStackTrace ();} _=8x?fC:rl
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Utility.log(nFileLength); V6Z2!Ht
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return nFileLength;
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} O$LvHv!
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//保存下载信息(文件指针位置) ^. M*pe
private void write_nPos() /c8F]fkZ=
{ zuwCN.
try{ ~~]L!P
output = new DataOutputStream(new FileOutputStream(tmpFile)); PL[7|_%
output.writeInt(nStartPos.length); Zm^4p{I%o*
for(int i=0;i<nStartPos.length;i++) 8ZE{GX.m2c
{ S~/zBFo-
// output.writeLong(nPos); 2/x+7F}w5
output.writeLong(fileSplitterFetch.nStartPos); bwS1YGb
output.writeLong(fileSplitterFetch.nEndPos); :dLfM)8}
} 9#xcp/O
output.close(); E_MGejm@
} G(EiDo&
catch(IOException e){e.printStackTrace ();} xm6cn\e
catch(Exception e){e.printStackTrace ();} 8$BZbj%?hx
} ZV$qv=X
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//读取保存的下载信息(文件指针位置) '/J}T -,Z
private void read_nPos() a$l
{ %70sS].@
try{ )E'iC
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); g,@0 ;uVq
int nCount = input.readInt(); ;3-5U&Axt
nStartPos = new long[nCount]; Re0ma%~LP
nEndPos = new long[nCount]; *am.NH\
for(int i=0;i<nStartPos.length;i++) F$N"&<[c
{ ;|5m;x/a
nStartPos = input.readLong(); S9U,so?
nEndPos = input.readLong(); ]4ya$%A
} )#N)w5DU
input.close(); " +'E
} c~K^ooS-
catch(IOException e){e.printStackTrace ();} PTXy:>]M
catch(Exception e){e.printStackTrace ();} TLU^ad#9E
} ri<E[8\
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private void processErrorCode(int nErrorCode) N=YRYUo
{ s+8
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System.err.println("Error Code : " + nErrorCode); q["CT&0
} <b~KR8
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//停止文件下载 G'{$$+U^K
public void siteStop() mp:%k\cF|
{ A]id*RtY
bStop = true; *tC]Z&5
for(int i=0;i<nStartPos.length;i++) &.,ZU\`zT
fileSplitterFetch.splitterStop(); >jD,%yG
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} :UGc6
} &'uFy0d,
//负责部分文件的抓取 Pwn"!pk
**FileSplitterFetch.java NguJ[
*/ 0'{0kE[wn
package NetFox; -
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import java.io.*; </3Shq
import java.net.*; ]([:"j
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public class FileSplitterFetch extends Thread { 8M9 &CsT6
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String sURL; //File URL H|T!}M>
long nStartPos; //File Snippet Start Position I0trHrX9
long nEndPos; //File Snippet End Position G%_6"s
int nThreadID; //Thread's ID +P2f<~
boolean bDownOver = false; //Downing is over lS&$86Jo(
boolean bStop = false; //Stop identical 0*o)k6?q3
FileAccessI fileAccessI = null; //File Access interface 2iYf)MC
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException
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{ 5RCZv\Wd&
this.sURL = sURL; c+|,qm
this.nStartPos = nStart; Hg\+:}k&9
this.nEndPos = nEnd; AQ:cim`
nThreadID = id; $R4[TQY).!
fileAccessI = new FileAccessI(sName,nStartPos);//定位 :SjTkfU
} ;$gZ?&
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public void run() `@eo <6
{ P{v>o,a.
while(nStartPos < nEndPos && !bStop) ;`Eie2y{M
{ !g{9]"Z1T
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try{ FjYih>
URL url = new URL(sURL); %y;E1pva
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 7714}%Z
httpConnection.setRequestProperty("User-Agent","NetFox"); Ta^l1]9.*
String sProperty = "bytes="+nStartPos+"-"; chv0\k"'
httpConnection.setRequestProperty("RANGE",sProperty); Cg[]y1Ne
Utility.log(sProperty); ~=qJSb
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InputStream input = httpConnection.getInputStream(); ,&[2z!
//logResponseHead(httpConnection); d:jD
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byte[] b = new byte[1024]; $K1 /^
int nRead; R?@F%J;tx
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) *ILx-D5qr
{ J`}5bnFP
nStartPos += fileAccessI.write(b,0,nRead); ZS[(r-)$F
//if(nThreadID == 1) rV.04m,
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 04>dxw)8
} <$!^LKKzA
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7 \)OWp
Utility.log("Thread " + nThreadID + " is over!"); ej-x^G?C
bDownOver = true; foY=?mbL
//nPos = fileAccessI.write (b,0,nRead); c^0YuBps[
} kNqSBzg
catch(Exception e){e.printStackTrace ();} {?tK]g#
} mNS7/I\
} o;bK 7D
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//打印回应的头信息 %HOMX{~}#
public void logResponseHead(HttpURLConnection con) k{_ Op/k}V
{ ue8C pn^M
for(int i=1;;i++) z*?-*6W
{ $OOZ-+8
String header=con.getHeaderFieldKey(i); vpR^G`/
if(header!=null) $t.i)wg +
//responseHeaders.put(header,httpConnection.getHeaderField(header)); ^3B)i=
Utility.log(header+" : "+con.getHeaderField(header)); &<8Q/m]5
else F^&
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break; <X9 T}g
} {.c(Sw}Eo
} *h6Lh]7
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public void splitterStop() {B^V_TX2
{ u%n6!Zx
bStop = true; 9+<%74|,
} $B6CLWB
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} c"qaULY
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/* lR]z8&
**FileAccess.java g$C-G5/bjD
*//文件访问(定位,写) D5]4(]k&
package NetFox; F\&Sn1>k
import java.io.*; =2&/Cn4
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public class FileAccessI implements Serializable{ Da_8Q(XFe
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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 %jaB>4.A:
RandomAccessFile oSavedFile; p<>xqU
long nPos; jtqH3xfy
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public FileAccessI() throws IOException m\a_0!K
{ 0Y rdu,c
this("",0); RiHOX&-7
} Wn;B ~
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public FileAccessI(String sName,long nPos) throws IOException h{zE;!+)D
{ /Mk85C79
oSavedFile = new RandomAccessFile(sName,"rw"); @**@W[EM
this.nPos = nPos; a& >(*PQ
oSavedFile.seek(nPos); Z4YQ5O5
} >~O36q^w
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public synchronized int write(byte[] b,int nStart,int nLen) Nda,G++5(
{ $@m)8T
int n = -1; ;8WgbR)ZLU
try{ ,(aOTFQS
oSavedFile.write(b,nStart,nLen); 7U=|>)Q0s
n = nLen; G9?6qb:
} kOfq6[JC
catch(IOException e) ?f1PQ
{ *69yB
e.printStackTrace (); /8!s
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} cG|)z<Z
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return n; +uR|0Jo8X
} Z4S0{:XY
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} Z2z"K<Z W
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/* Q_}i8p'
**SiteInfoBean.java cG%ttfq\
*/ V,,/}f'
package NetFox; )9_jr(s
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public class SiteInfoBean { y'sy]Q~
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private String sSiteURL; //Site's URL e|wH5(V
private String sFilePath; //Saved File's Path z4l
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private String sFileName; //Saved File's Name T';<;6J**
private int nSplitter; //Count of Splited Downloading File c*nH=
+ -e8MvP
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public SiteInfoBean() 1$,t:/'-4
{//nSplitter的缺省值为5 gI^);JrTE
//default value of nSplitter is 5 M1._{Jw5
this("","","",5); nquKeH
} *SkUkqP9z
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 6bL+q`3>
{ z1\G,mJK
sSiteURL= sURL; Mwdh]I,#
sFilePath = sPath; .K![<eZ
sFileName = sName; /'|'3J]HP
this.nSplitter = nSpiltter; m35Blg34
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} }g WSV
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public String getSSiteURL() 0x'-\)v>3
{ <j1l&H|ux,
return sSiteURL; %hK?\Pg3=E
} gi`K^L=C
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public void setSSiteURL(String value) Hfer\+RX
{ ^G63GYh]y
sSiteURL = value; .%+`e
} o/I <)sa
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public String getSFilePath() dfB#+wh
{ T:0X-U
return sFilePath; m:TS
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} bhXH<=
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public void setSFilePath(String value) R7us9qM4e
{ %hU8ycI*h
sFilePath = value; 7BCCQsz<
} /'1UfjW>
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public String getSFileName() Gy[;yLnX
{ $Aww5G5e
return sFileName; 8k'UEf`'(
} Z,o*M#}
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public void setSFileName(String value) p7(xk6W
{ Ty%4#9``0
sFileName = value; (]0$^!YK
} R!xs;|]
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public int getNSplitter() HZ=Dd4!
{ BQf}S
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return nSplitter; 87EI<\mP
} );$Uf!v4
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public void setNSplitter(int nCount) 0CY_nn#3
{ "ffwh
nSplitter = nCount; E66e4?"
} P,!W\N%3
} ?/"@WP9
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/* ro37H2^Ty
**Utility.java xkl'Y *
*/ \Ja%u"DA
package NetFox; e =&
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public class Utility { D@qq=M
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public Utility() n4)G g~PE
{ #e&j]Q$Eh
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} p<'mc|hGq
g=pz&cz;>\
//线程睡眠 tjOfekU
public static void sleep(int nSecond)
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{ HhNH"b&