/* U2*g9Es
**SiteFileFetch.java 3Zm'09A-.
*/ -_bHLoI
package NetFox; 6~KtT{MYQ
import java.io.*; ceakTAB[
import java.net.*; %[:\ZwT,-
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public class SiteFileFetch extends Thread { i<N[s O
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SiteInfoBean siteInfoBean = null; //文件信息Bean *x EcX6ZHX
long[] nStartPos; //开始位置 93="sS
long[] nEndPos; //结束位置 6&o9mc\I
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ?UC3ES
long nFileLength; //文件长度
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boolean bFirst = true; //是否第一次取文件 M{U {iS
boolean bStop = false; //停止标志 Ih*}1D)7
File tmpFile; //文件下载的临时信息 ;$|[z<1RdW
DataOutputStream output; //输出到文件的输出流 3PB#m.N<
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) -c-#1_X5
public SiteFileFetch(SiteInfoBean bean) throws IOException '-sAi
{ h)[{{JSf
siteInfoBean = bean; =yv_i]9AN
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); s? /#8 `
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); =H T:p:S
if(tmpFile.exists ()) GY@-}p~it
{ L-}>;M$Y)
bFirst = false; 8}/v[8p
read_nPos(); E5d?toZ,8"
} *u$MqN
else G.2ij%Zz
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nStartPos = new long[bean.getNSplitter()]; ?@U7tNI
nEndPos = new long[bean.getNSplitter()]; ].f28bY
} G3{t{XkV
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} W=v4dy]B
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public void run() +{V"a<D$m
{ V`OeJVe
//获得文件长度 ]I9Hbw
//分割文件 GzJLG=M
//实例FileSplitterFetch a+$WlG/x
//启动FileSplitterFetch线程 z4f\0uQ
//等待子线程返回 R u^v!l`!7
try{ C:qb-10|A
if(bFirst) =`f6@4H
{ jk-hIl&
nFileLength = getFileSize(); ]C|Zs=5
if(nFileLength == -1) ng]jpdeA
{ P+iZ5S\kL=
System.err.println("File Length is not known!"); 6LUO
} c}iVBN6~.<
else if(nFileLength == -2) {C>.fg%t
{ N&`VMEB)k
System.err.println("File is not access!"); W2L:
} D9H(kk
else TrxZS_
{ j4wcxZYY~
for(int i=0;i<nStartPos.length;i++) c\i`=>%b@
{ #J.v[bOWQ
nStartPos = (long)(i*(nFileLength/nStartPos.length)); h^F^|WT$
} mQmn &:R
for(int i=0;i<nEndPos.length-1;i++) !8q+W`{
{ ^,L vQW4
nEndPos = nStartPos[i+1]; H"|xG;cf
} FLI\SF<
nEndPos[nEndPos.length-1] = nFileLength; L,*KgLG
} 6QsH?!bu
} 3L$_OXx
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//启动子线程
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fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; B .p&,K
for(int i=0;i<nStartPos.length;i++) l6Hu(.Ls;j
{ (~F{c0\C
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), O5HK2Xg,C
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), V5y8VT=I
nStartPos,nEndPos,i); yjZ]_.
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); p<1z!`!P
fileSplitterFetch.start(); ,1'9l)zP
} }Z
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// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), $:M *$r^u
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1);
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// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", SVsLu2tVY
nEndPos = " + nFileLength); /0Q=}:d
// fileSplitterFetch[nPos.length-1].start(); y,&UST
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//等待子线程结束 a.+2h%b
//int count = 0; 0z)
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//是否结束while循环 O)n LV~X
boolean breakWhile = false; w=EUwt
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while(!bStop) 6~8A$:
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write_nPos(); Wx#((T
Utility.sleep(500); fUQuEh5_
breakWhile = true; q[4{Xh
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for(int i=0;i<nStartPos.length;i++) <.j `n
{ OE87&Cl"{t
if(!fileSplitterFetch.bDownOver) '>[l1<d!G
{ K;jV"R<9
breakWhile = false; WF0%zxg ]
break; ,Y&LlB 2
} /(C?3}}L
} ^)ouL25Z*2
if(breakWhile) 7Q,9j.
break; &7* |rshZ
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//count++; [+0rlmB
//if(count>4) Va^Y3/
// siteStop(); 32!jF}qpD
} vK2sj1Hzr
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System.err.println("文件下载结束!"); [.\uHt
} Df;EemCh
catch(Exception e){e.printStackTrace ();} IC&xL9
} <p"[jC2zF;
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//获得文件长度 Y<('G5A
public long getFileSize() 6<sd6SM
{ "Y(stRa
int nFileLength = -1; yl|?+
try{ MhMY"bx8
URL url = new URL(siteInfoBean.getSSiteURL()); )cA#2mlS'1
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); dQ6:c7hp>D
httpConnection.setRequestProperty("User-Agent","NetFox"); |J:n'}
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int responseCode=httpConnection.getResponseCode(); Il(p!l<Xz#
if(responseCode>=400) om%L>zfB
{ _`yd"0Ux
processErrorCode(responseCode); pME17 af
return -2; //-2 represent access is error _ndc^OG
} y]|Hrx
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String sHeader; 5\RTy}w3x
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for(int i=1;;i++) RlH|G
{ uC{qaMQ
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); JCoDe.
//Utility.log(in.readLine()); X0<qG
sHeader=httpConnection.getHeaderFieldKey(i); P:GAJ->;]>
if(sHeader!=null) *^j'G^n
{ Oax*3TD
if(sHeader.equals("Content-Length")) #+)AIf
{ 2=Sv#
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); V~j:!=b%v
break; , &>LBdG`
} %LBa;M
} VO#x+u]/
else D$C >ZF
break; +"8 [E~Bih
} )!+M\fT
} P%?|V_m
catch(IOException e){e.printStackTrace ();} [ kI|Thx
catch(Exception e){e.printStackTrace ();} 4 .7YIM
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