/* xq?9w$
**SiteFileFetch.java /M:R|91:_
*/ %0>DjzYt
package NetFox; $ BEIG@qG
import java.io.*; e{ce
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import java.net.*; 2:31J4t-<
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public class SiteFileFetch extends Thread { B74L/h
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SiteInfoBean siteInfoBean = null; //文件信息Bean [d(@lbV0
long[] nStartPos; //开始位置 i.eu$~F
long[] nEndPos; //结束位置 mkA1Sh{hX>
FileSplitterFetch[] fileSplitterFetch; //子线程对象 FME&vUh/
long nFileLength; //文件长度 .
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boolean bFirst = true; //是否第一次取文件 w]4=uL6
boolean bStop = false; //停止标志 g]'RwI
File tmpFile; //文件下载的临时信息 (J c} K
DataOutputStream output; //输出到文件的输出流 ZT
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) QB<9Be@e
public SiteFileFetch(SiteInfoBean bean) throws IOException 3GH@|id
{ wVI 1sR
siteInfoBean = bean; YbMeSU/sX
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); _\HMF
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 8\z5* IPGs
if(tmpFile.exists ()) K$S:V=y%r7
{ 8Ol#-2>k$
bFirst = false; SF$]{
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read_nPos(); -P;_j,~U
} NWuJ&+gcO5
else J&64tQl*
{ bCM&Fe0GM
nStartPos = new long[bean.getNSplitter()]; 8hx4s(1!
nEndPos = new long[bean.getNSplitter()]; 0!WF,)/T7i
} h$#QRH
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} f0uzoeL<%
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public void run() @a AR99 M
{ 8>Y
//获得文件长度 -ZTe#@J
//分割文件 I~LN)hqd o
//实例FileSplitterFetch w\
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//启动FileSplitterFetch线程 pYtG%<
//等待子线程返回 }b9"&io
try{ c7$L:
if(bFirst) )7U^&I,
{ [@!.( Hp
nFileLength = getFileSize(); D&Xh|}2A
if(nFileLength == -1) q[6tvPfkX
{ _ >)+
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System.err.println("File Length is not known!"); P\;L#2n
} |}~2=r z
else if(nFileLength == -2) 7H$0NMP
{ TU6e,G|t
System.err.println("File is not access!"); _:hrm%^
} o:H^
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else oCE=!75
{ ' `0kW_'
for(int i=0;i<nStartPos.length;i++) Vej [wY-c
{ `Yk~2t"V
nStartPos = (long)(i*(nFileLength/nStartPos.length)); #cB=](N
} 8dg\_H_
for(int i=0;i<nEndPos.length-1;i++) !.(Kpcrg
{ uSZCJ#'G
nEndPos = nStartPos[i+1]; dP>~ExYtm
} 6S#Y$2
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nEndPos[nEndPos.length-1] = nFileLength; *R] Ob9X
} VR86ok
} pmm?Fq!s=
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//启动子线程 ;x 9_
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; en"]u,!
for(int i=0;i<nStartPos.length;i++) {!?
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{ !N\<QRb\q
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ~U] "dbQ
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), wul$lJ?tE
nStartPos,nEndPos,i); K?;_T$^K
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); BCDmce`=l
fileSplitterFetch.start(); $XBn:0U
} tUS)1*{_
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), v'R{lXE
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); m5!~PG:_
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ^/nj2"
nEndPos = " + nFileLength); ^*CvKCS
// fileSplitterFetch[nPos.length-1].start(); DuESLMhz
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//等待子线程结束 NSQ}:m
//int count = 0; \Wdl1 =`
//是否结束while循环 iD*%' #u
boolean breakWhile = false; l;*/F`>c
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while(!bStop) "Di27Rq
{ :O`7kZ]=n
write_nPos(); ~d0:>8zQR
Utility.sleep(500); 4*k>M+o/C4
breakWhile = true; RMinZ}/
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for(int i=0;i<nStartPos.length;i++) nkI+"$Rz0
{ _n6ge*,E
if(!fileSplitterFetch.bDownOver) !n;0%"(FH
{
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breakWhile = false; 9Fo00"q
break; xC3h m
} {1 VHz])I
} p>4tPI}bf
if(breakWhile) gYeKeW3)
break; *QKxrg
] !7%)
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//count++; 06ndW9>wD)
//if(count>4) 0c2O'&$au
// siteStop(); W''%{A/'
} 9+:SS1_
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System.err.println("文件下载结束!"); ew13qpt)<L
} `ChS$p"A
catch(Exception e){e.printStackTrace ();} mf~JolucJ
} a
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//获得文件长度 -cgLEl1 J
public long getFileSize() #7 )&`
{ Q6Ay$*y=D
int nFileLength = -1; / //
try{ \,UpFuU\
URL url = new URL(siteInfoBean.getSSiteURL()); {Ad4H[]|]
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); AnF"+<
httpConnection.setRequestProperty("User-Agent","NetFox"); Sb2hM~
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int responseCode=httpConnection.getResponseCode(); Hw0S/ytY
if(responseCode>=400) |`T$Iq
{ =`MxgK +
processErrorCode(responseCode); ae%Bl[
return -2; //-2 represent access is error u+5&^"72,
} ?;GbK2\bj
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String sHeader; _GhP{C$
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for(int i=1;;i++) lEZODc+%Y
{ 6TR` O
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); k.."_4
//Utility.log(in.readLine()); _4#Mdnh}[
sHeader=httpConnection.getHeaderFieldKey(i); CpE LLA<
if(sHeader!=null) (DLk+N4UHA
{ ?-Qq\D^+
if(sHeader.equals("Content-Length")) I cJy$+
{ f|v5itO2
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); <?2g\+{s9
break; CXQ +h
} 5dvP~sw
} >(?}'pS8
else !W\za0p
break; V=i/cI\
} D`Cy]j
} w"Q/ 6#!K
catch(IOException e){e.printStackTrace ();} 1"\^@qRv#
catch(Exception e){e.printStackTrace ();} 9QXBz=Fnf
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Utility.log(nFileLength); BvnNAi
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return nFileLength; .4[\%r\i
} _J,lF-,
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//保存下载信息(文件指针位置) MJ\^i4
private void write_nPos() euMJ c
{ Jkx_5kk/\
try{ r"_U-w
output = new DataOutputStream(new FileOutputStream(tmpFile)); g[c_rty
output.writeInt(nStartPos.length); |j2$G~B6
for(int i=0;i<nStartPos.length;i++)
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{ }R9>1u}6
// output.writeLong(nPos); e0"80"D
output.writeLong(fileSplitterFetch.nStartPos); g1H$wU3eu
output.writeLong(fileSplitterFetch.nEndPos); APJVD-
} v:IpZ;^
output.close(); iW?z2%#
} <"hq}B
catch(IOException e){e.printStackTrace ();} )KdEl9 o
catch(Exception e){e.printStackTrace ();} al{}_1XoU
} &cpqn2Z
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//读取保存的下载信息(文件指针位置) &*Z"r*
private void read_nPos() Z?f-_NHg
{ 9
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try{ Q,LDn%+;B*
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ;u?L>(b
int nCount = input.readInt(); A4tb>OM
nStartPos = new long[nCount]; t"$#KP<
nEndPos = new long[nCount]; ysH'X95
for(int i=0;i<nStartPos.length;i++) MqAN~<l [
{ 'PvOOhm,
nStartPos = input.readLong(); Mp3nR5@d$
nEndPos = input.readLong(); K'c[r0Ew
} Vr7L9%/wg
input.close(); Ln$= 8x^T
} Z]SUr`Z
catch(IOException e){e.printStackTrace ();} m4on<5s/
catch(Exception e){e.printStackTrace ();} +zg3/C4 S
} wZg~k\_lF
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private void processErrorCode(int nErrorCode) pf`vH`r
{ XS(Q)\"
System.err.println("Error Code : " + nErrorCode); Rn $TYCO
} I]-"Tw
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//停止文件下载 B%I<6E[D
public void siteStop() z7s}-w,
{ veAdk9
bStop = true; |/%X8\
for(int i=0;i<nStartPos.length;i++) S[e> 8
fileSplitterFetch.splitterStop(); Ly-}HW (
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} qQwf#&
} Tl
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//负责部分文件的抓取 FL[,?RU?2
**FileSplitterFetch.java YS bS.tq
*/ A~@x8
package NetFox; c=f;3N
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import java.io.*; Kut@z>SK
import java.net.*; v[4-?7-
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public class FileSplitterFetch extends Thread { ,R}9n@JI^Y
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String sURL; //File URL sdBB(
long nStartPos; //File Snippet Start Position x3l~k Z(
long nEndPos; //File Snippet End Position qm6 X5T
int nThreadID; //Thread's ID ";Q}Gs}
boolean bDownOver = false; //Downing is over 4vi[hiV
boolean bStop = false; //Stop identical C ~Doj
FileAccessI fileAccessI = null; //File Access interface ' 7H"ezt
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException &<EixDi4q
{ &&7&/
this.sURL = sURL; M%bD7naBq
this.nStartPos = nStart; ?h:xO\h8
this.nEndPos = nEnd; mq+x=
nThreadID = id; {n{-5Y
fileAccessI = new FileAccessI(sName,nStartPos);//定位 TR9dpt+T
} -VvN1G6.x?
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public void run() q4SEvP}fLx
{ LaYd7Oyf]
while(nStartPos < nEndPos && !bStop) p^s:s-"f\
{ ZKJhmk
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try{ ,rX|_4n*
URL url = new URL(sURL); ~Kt2g\BSok
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); <q`|,mc
httpConnection.setRequestProperty("User-Agent","NetFox"); GsoD^mjY
String sProperty = "bytes="+nStartPos+"-"; V*W H
httpConnection.setRequestProperty("RANGE",sProperty); 4t 0p!IxG
Utility.log(sProperty); M9.FtQhK/
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InputStream input = httpConnection.getInputStream(); j/F:j5O*
//logResponseHead(httpConnection); sn8l3h)
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byte[] b = new byte[1024]; CQs,G8\/
int nRead; y?UB?2VN
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) p2hPLq
{ v}. ~m)
nStartPos += fileAccessI.write(b,0,nRead); EKUiX#p:M
//if(nThreadID == 1) Y/f8rN
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Z fd `Fu
} v,Z?pYYo
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Utility.log("Thread " + nThreadID + " is over!"); [&)*jc16
bDownOver = true; QTU$mC]
//nPos = fileAccessI.write (b,0,nRead); 8{ )N%r
} ;P^}2i[q>[
catch(Exception e){e.printStackTrace ();} Nv=&gOy=
} 7w}]9wCN?
} W^i[7 r
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//打印回应的头信息 ;pqS|ayl
public void logResponseHead(HttpURLConnection con) v?l*jr1-2
{ fs2y$HN
for(int i=1;;i++) w&
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{ i^)JxEPr w
String header=con.getHeaderFieldKey(i); 4MoxP
if(header!=null) mOJ-M@ME
//responseHeaders.put(header,httpConnection.getHeaderField(header)); bUe6f,8,
Utility.log(header+" : "+con.getHeaderField(header)); ,U>G$G^
else 4$+/7I \
break; R]l2,0:
} QtLd(&
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} -HRa6
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public void splitterStop() QC(ce)Y
{ VuuF _y;
bStop = true; oGL2uQXX
} l - ~PX
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} \*Z:w3;r
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/* m,Mg
**FileAccess.java 2^)_XVX1
*//文件访问(定位,写) -kb;h F}.
package NetFox; rnC<(f22
import java.io.*; C|RC9b
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public class FileAccessI implements Serializable{ db.~^][k
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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 wq]vcY9^
RandomAccessFile oSavedFile; ~JB4s%&
long nPos; /}(\P@Z
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public FileAccessI() throws IOException x5k6"S"1,
{ `82^!7 !
this("",0); "YN6o_*]
} dK]#..
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public FileAccessI(String sName,long nPos) throws IOException ,#hNHFa'JH
{ )!5"\eys
oSavedFile = new RandomAccessFile(sName,"rw"); HG3iK
this.nPos = nPos; jWK>=|)=c
oSavedFile.seek(nPos); [ub)`-6 u
} 58]t iP"
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public synchronized int write(byte[] b,int nStart,int nLen) +<)H2
{ gyobq'o-
int n = -1; >1q:-^
try{ 5KW
n >n
oSavedFile.write(b,nStart,nLen); 6>[J^k%~w)
n = nLen; CIQ9dx7>
} G5UNW<P2C
catch(IOException e) bLO^5` 6
{ 3A3WD+[L
e.printStackTrace (); pEY zB;
} =91f26c!~
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return n; '&Tz8.jp~
} nM`pnR_
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} ^geY Ay
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/* tY60~@YO&
**SiteInfoBean.java aL/7xa
*/ 6G:7r [
package NetFox; ;JX2ebx
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public class SiteInfoBean { J74kK#uF=
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private String sSiteURL; //Site's URL p%5(Qqmlk
private String sFilePath; //Saved File's Path p+Fh9N<F9
private String sFileName; //Saved File's Name UbP$WIrq
private int nSplitter; //Count of Splited Downloading File ;e Mb$px
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public SiteInfoBean() -_f-j
{//nSplitter的缺省值为5 2`V(w[zTr
//default value of nSplitter is 5 1Ch0O__2L
this("","","",5); 6t4{aa!L|9
} }KV)F,`
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) _J0(GuG=~
{ U)SQ3*j2D
sSiteURL= sURL; :D:J_{HJ
sFilePath = sPath; ;RW5XnVx
sFileName = sName; dDqT#N?Y
this.nSplitter = nSpiltter; z*WQ=l2
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} xfA@GYCfT
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public String getSSiteURL() a'7RzN ,]
{ vcSb:('
return sSiteURL; MwWN;_#EO)
} NZuylQ)0
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public void setSSiteURL(String value) BsYJIKfW
{ s+a#x(7{
sSiteURL = value; OmaG|2u
} 4x" je
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public String getSFilePath() }QJ6"s
{ sDXQ{*6a
return sFilePath; D#11
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} |k)Nf+(}W
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public void setSFilePath(String value) ,sn
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{ ZV`o:Gd
sFilePath = value; I_na^sh*
} ^/7Y3n!|3
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public String getSFileName() y&2O)z!B
{ @*JS[w$1
return sFileName; 7/FF}d
} :qvaI,
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public void setSFileName(String value) Y^'mBM#j
{ XI5q>cd\Sz
sFileName = value; e;&f