/* -
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**SiteFileFetch.java hsQ*ozv[)
*/ ZLf(m35
package NetFox; >{rD3X"d
import java.io.*; b=L|GV@$
import java.net.*; n^|7ycB'
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public class SiteFileFetch extends Thread { %T;VS-f
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SiteInfoBean siteInfoBean = null; //文件信息Bean c.>OpsF
long[] nStartPos; //开始位置 _PP-'^ U
long[] nEndPos; //结束位置 8p/&_<mnW
FileSplitterFetch[] fileSplitterFetch; //子线程对象 hsI9{j]f
long nFileLength; //文件长度 5fp&!HnG
boolean bFirst = true; //是否第一次取文件 =#%Vs>G
boolean bStop = false; //停止标志 =jU#0FAO
File tmpFile; //文件下载的临时信息 )M56vyo
DataOutputStream output; //输出到文件的输出流 )Q|sW+AF
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 3Ea/)EB]
public SiteFileFetch(SiteInfoBean bean) throws IOException BG]|iHi
{ nv:VX{%
siteInfoBean = bean; |4` ;G(ta
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); =feVT2*
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ,pdf$)
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if(tmpFile.exists ()) nEik;hAz
{ TF,([p*
bFirst = false; C3K")BO!
read_nPos(); 7|)K!
} 8Urj;KkD
else S;nlC
{ ^Uik{x
nStartPos = new long[bean.getNSplitter()]; C33RXt$X
nEndPos = new long[bean.getNSplitter()]; ZM57(D
} 0!1cHB/c
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} #/hXcF
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public void run() B+ZhQW
{ buMST&
//获得文件长度 bp P3#~
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//分割文件 |W|RX3D
//实例FileSplitterFetch D}nRH@<`
//启动FileSplitterFetch线程 9t&m\J
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//等待子线程返回 Z.U8d(
try{ ;W@
if(bFirst) !q^2| %
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nFileLength = getFileSize(); h$ $i@IO0
if(nFileLength == -1) N6!9QIu~i
{ PD:lI]:s
System.err.println("File Length is not known!"); m=^ihQ
} Q\2~^w1V
else if(nFileLength == -2) (:7Z-V2(
{ oUN;u*
System.err.println("File is not access!"); 1@^*tffL:
} kAAD&t;w
else kY~o3p<
{ 6CNxb
for(int i=0;i<nStartPos.length;i++) Mqmy*m[U
{ 5VE9DTE
nStartPos = (long)(i*(nFileLength/nStartPos.length)); A_|X54}w&
} Twk,R. O
for(int i=0;i<nEndPos.length-1;i++) \U HI%1^
{ xG,L*3c{o
nEndPos = nStartPos[i+1]; OH` |aqN
} zj#8@gbh+
nEndPos[nEndPos.length-1] = nFileLength; -1]8f
} #pWeMt'
} j g(cpo d
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//启动子线程 [CG*o>n&|
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 0G#s/u#
for(int i=0;i<nStartPos.length;i++) "jP{m;p
{ =XZd_v
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), `4t*H>:y
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 5uL!Ae
nStartPos,nEndPos,i); W JG8E7
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 0M;aTM
fileSplitterFetch.start(); }r;#|=HR
} zdN(r<m9"
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), V7,;N@FL
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Uk0
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// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", x:`"tJa
nEndPos = " + nFileLength); $Rf)i W;h
// fileSplitterFetch[nPos.length-1].start(); 3TNj*jo
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//等待子线程结束 y-@{
//int count = 0; m+pFU?<|
//是否结束while循环 Y86mg7[U/
boolean breakWhile = false; kD_616
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while(!bStop) lQf38u||
{ ~_|ZUb
write_nPos(); ITBa ^P
Utility.sleep(500); ?;CMsO*q
breakWhile = true;
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for(int i=0;i<nStartPos.length;i++) _K<Z
{ Cg];UB}k
if(!fileSplitterFetch.bDownOver) nT/Azg
{ vptBDfzz
breakWhile = false; _"S1>s)X?j
break; G[a&r
} \@GKVssw
} W=!di3IA
if(breakWhile) FYX"q-Z
break; c"`CvQO64
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//count++; DkeFDzQ5
//if(count>4) E6s)J -a
// siteStop(); DY8w\1g"
} tZ_D.syBAc
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System.err.println("文件下载结束!"); .%x%(olf
} V-w{~
catch(Exception e){e.printStackTrace ();} ;;7:l,vy
} d\j[O9W>
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//获得文件长度 jLF,R7t
public long getFileSize() mD go@f
{ wdQ%L4l
int nFileLength = -1; E}8wnrxf
try{ {9<c*0l
URL url = new URL(siteInfoBean.getSSiteURL()); a0
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); \jHIjFwQ
httpConnection.setRequestProperty("User-Agent","NetFox"); w ;xbQZ|+
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int responseCode=httpConnection.getResponseCode(); XywsjeI4
if(responseCode>=400) l1ViUY&Z
{ ^#)]ICV
processErrorCode(responseCode); tQmuok4"d
return -2; //-2 represent access is error 7s}Eq~
} hmr 2(f%U
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String sHeader; sJ5Ws%q
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for(int i=1;;i++)
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{ Gq0`VHAn
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); tqwAS)v=
//Utility.log(in.readLine()); b+e9Pi*\
sHeader=httpConnection.getHeaderFieldKey(i); &^(4yw(~
if(sHeader!=null) X@H/"B%u2
{ {P!1VYs5
if(sHeader.equals("Content-Length")) 4O:y
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{ @"O|[%7e
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); gfly?)V nF
break; c,FZ{O@
} ytyB:# J
} 9y{R_
else EdC/]
break; tM3Q;8gB!
} {Xv0=P
} GtpBd40"
catch(IOException e){e.printStackTrace ();} r!y3VmJ'm
catch(Exception e){e.printStackTrace ();} <7Ry"z6g;
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Utility.log(nFileLength); :'X:cL
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return nFileLength; 8\Kpc;zb
} n'qWS/0U=
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//保存下载信息(文件指针位置) ,U?^u%
private void write_nPos() A#8J6xcSrL
{ bO+]1nZ.
try{ <KBS ;t="1
output = new DataOutputStream(new FileOutputStream(tmpFile)); i 2l/y,UX
output.writeInt(nStartPos.length); $tB `dDj
for(int i=0;i<nStartPos.length;i++) uo-1.[9ds
{ XWag+K
// output.writeLong(nPos); ^"] ]rZ)
output.writeLong(fileSplitterFetch.nStartPos); e&-MP;kgW9
output.writeLong(fileSplitterFetch.nEndPos); Fuy"JmeR
} $nr=4'yZ
output.close(); BI+x6S>d
} P`AW8Y6o
catch(IOException e){e.printStackTrace ();} =2e{T J/
catch(Exception e){e.printStackTrace ();} C_S2a0?
} 3wN{k\ns
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//读取保存的下载信息(文件指针位置) <HH\VG\H6
private void read_nPos() dheobD
{ e5#?@}?
try{ S9%ZeM+
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); @K1'Q!S*
int nCount = input.readInt(); PC3?eS}
nStartPos = new long[nCount]; YT}ZLx
nEndPos = new long[nCount]; ToM1#]4
for(int i=0;i<nStartPos.length;i++) g9@H4y6fe=
{ BKKW3PT
nStartPos = input.readLong(); <kKuis6h
nEndPos = input.readLong(); pMd!Jl#(N
} &X#6jTh+
input.close(); r7-H`%.
} 2hsRYh
catch(IOException e){e.printStackTrace ();} uSUog+i
catch(Exception e){e.printStackTrace ();} C2H2*"
} bMB*9<c~
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private void processErrorCode(int nErrorCode) >f70-D28
{ 5O[\gd-
System.err.println("Error Code : " + nErrorCode); #@L5yy2
} \1<8'at
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//停止文件下载 >!bw8lVV
public void siteStop() 'Lh nl3
{ 6'Q*SO;1gh
bStop = true; lP*p7Y '
for(int i=0;i<nStartPos.length;i++)
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fileSplitterFetch.splitterStop(); M}]4tAyT
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} wizLA0W
} eI98J"h%?
//负责部分文件的抓取 ~ DP5Qi
**FileSplitterFetch.java IO7cRg'-F
*/ >?[?W|k7V
package NetFox; F0tcVdv
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import java.io.*; -?w3j9kk>
import java.net.*; '&/~Sh$%
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public class FileSplitterFetch extends Thread { 2TgS
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String sURL; //File URL O Ke
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long nStartPos; //File Snippet Start Position JqV}$E"M2
long nEndPos; //File Snippet End Position <[vsGUbc
int nThreadID; //Thread's ID :9f 9Z7M
boolean bDownOver = false; //Downing is over AjJ/t4<
boolean bStop = false; //Stop identical kn+@)3W:*
FileAccessI fileAccessI = null; //File Access interface |E&|6h1
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException
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{ baGV]=j
this.sURL = sURL; e5(c,,/
this.nStartPos = nStart; .|0$?w
this.nEndPos = nEnd; vI]V@il
nThreadID = id; =R*IOJ
fileAccessI = new FileAccessI(sName,nStartPos);//定位 ET(/h/r
} cZ3A~dTOR
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public void run() NfZC}
{ .Hg{$SAC(w
while(nStartPos < nEndPos && !bStop) g){gF(
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try{ Zt}b}Bz
URL url = new URL(sURL); 8S5Q{[ !
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection ();
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httpConnection.setRequestProperty("User-Agent","NetFox"); k ~4o`eA
String sProperty = "bytes="+nStartPos+"-"; E {UhM q7
httpConnection.setRequestProperty("RANGE",sProperty); f|Nkk*9$
Utility.log(sProperty); XB a^
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InputStream input = httpConnection.getInputStream(); \H
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//logResponseHead(httpConnection); h6?o)Q>N
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byte[] b = new byte[1024]; l!": s:/'
int nRead; -`$J& YU
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) }!"Cvu
{ 89t"2|9 u
nStartPos += fileAccessI.write(b,0,nRead); m~4ik1wq
//if(nThreadID == 1) 8( Q[A
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); `Om
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} 5sSAH
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Utility.log("Thread " + nThreadID + " is over!"); iFZ.a.NDc
bDownOver = true; Ym6v 4k!@O
//nPos = fileAccessI.write (b,0,nRead); _-2;!L#/
} j+e
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catch(Exception e){e.printStackTrace ();} /T2 v`Li
} bK{ VjXF
} &'Xgf!x
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//打印回应的头信息 }GHCu
public void logResponseHead(HttpURLConnection con) ?5F;4oR2g
{ 0IZF%`
for(int i=1;;i++) %3.
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{ dh1 N/[
String header=con.getHeaderFieldKey(i); ED);2*qP}
if(header!=null) A@-U#UvN
//responseHeaders.put(header,httpConnection.getHeaderField(header)); dj}|EW4
Utility.log(header+" : "+con.getHeaderField(header)); UzW]kY[A<
else =CO'LyG
break; s[VYd:}se
} c4zGQoeH:
} olKM0K
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public void splitterStop() /. H(&
{ OzR<jCOS
bStop = true; 2`A[<