/* _D
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**SiteFileFetch.java `;/XK,m-
*/ w5(yCyNp~
package NetFox; =x#&\ui
import java.io.*; .<.#aY;N
import java.net.*; cmIT$?J
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public class SiteFileFetch extends Thread { u>}zm_
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SiteInfoBean siteInfoBean = null; //文件信息Bean yzg9I
long[] nStartPos; //开始位置 y!hi"!
long[] nEndPos; //结束位置 +ouY
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ~#4~_d.=L
long nFileLength; //文件长度 {G%3*=?,j
boolean bFirst = true; //是否第一次取文件 hIo0S8MOj$
boolean bStop = false; //停止标志 }Aw47;5q;
File tmpFile; //文件下载的临时信息 0Az/fzJlz
DataOutputStream output; //输出到文件的输出流 ^Et,TF\
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) Xb0!( (A
public SiteFileFetch(SiteInfoBean bean) throws IOException 8t=3
{ C5;wf3
siteInfoBean = bean; bQj`g2eyM
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); hLo>R'@uN
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); T]uKH29.%
if(tmpFile.exists ()) qy&\Xgn;GA
{ J'Gm7h{
bFirst = false; P9s_2KOF
read_nPos(); 'e85s%ru
} 8$m1eQ`{
else b}}y=zO|$
{ v8
nStartPos = new long[bean.getNSplitter()]; M?R!n$N_
nEndPos = new long[bean.getNSplitter()]; J^h'9iQpi
} vnZ4(
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} vzcz<i )
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public void run() k:mlt:
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//获得文件长度 0-GKu d
//分割文件 {(!)P
//实例FileSplitterFetch kF?S 2(vH
//启动FileSplitterFetch线程 3>M.]w6{
//等待子线程返回 SBz/VQ
try{ >>j+LRf*
if(bFirst) i pwW%"6
{ qw2)v*Fn
nFileLength = getFileSize(); p+)C$2YK
if(nFileLength == -1) #@E(<Pu4`
{ sS|<&3
System.err.println("File Length is not known!"); >Fp&8p`am
} SM$\;)L
else if(nFileLength == -2) G:DSWW}
{ @.1Qs`pt
System.err.println("File is not access!"); :Fnzi0b
} BvQUn@ XE
else oSmjs
{ Yw1Y-M
for(int i=0;i<nStartPos.length;i++) @7 -D7
{ NA\ x<
nStartPos = (long)(i*(nFileLength/nStartPos.length)); +[_gyLN<5b
} ?uig04@3
for(int i=0;i<nEndPos.length-1;i++) $bFgsy*N2
{ #<UuI9
nEndPos = nStartPos[i+1]; U&X.
} ) G|"jFP
nEndPos[nEndPos.length-1] = nFileLength; U1jSUkqb
} I:HV6_/^-G
} $YPQC
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//启动子线程 f}%sO
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; H(?e&Qkg
for(int i=0;i<nStartPos.length;i++) H6{Rd+\Z
{ M&OsRrq
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), pLPd[a
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Yx!n*+ :J
nStartPos,nEndPos,i); Bu':2"7
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); TG?fUD V
fileSplitterFetch.start(); C`pan /t
} 4L!e=>as"1
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), [d\#[l_
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); E}t-N
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", t:disL&!E
nEndPos = " + nFileLength); 6kC)\uy
// fileSplitterFetch[nPos.length-1].start(); gsi<S6DQ8
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//等待子线程结束 a0 qj[+
//int count = 0; 0O_E\- =
//是否结束while循环 Q6xgLx[
boolean breakWhile = false; ;=#qHo9k1%
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while(!bStop) bu;vpNa
{ ]Px:d+wX:
write_nPos(); XGL"gD
Utility.sleep(500); y^3,X_0
breakWhile = true; R4yJ.f
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for(int i=0;i<nStartPos.length;i++) S~}$Ly@
{ fq{I$syY
if(!fileSplitterFetch.bDownOver) 2AmR(vVa"
{ Mg&HRE
breakWhile = false; }WoX9M; 1
break; UX?X]ZYVR
} "1AjCHZ
} R+C+$?4NG
if(breakWhile) JW2W>6Dgv[
break; .ZM]%[4
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//count++; omr:C8T>
//if(count>4) -B",&yTV
// siteStop(); XPrY`,kN
} Fv<]mu
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System.err.println("文件下载结束!"); G6f%/m`
} j^:b-:F
catch(Exception e){e.printStackTrace ();} YstXNN4
} bl6':m+
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//获得文件长度 iFY]0@yt
public long getFileSize() H)-L%l|9
{ (gFQK[
int nFileLength = -1; `;R|V
try{ <ihhV e
URL url = new URL(siteInfoBean.getSSiteURL()); Gt?!E6^!
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); f45x%tha %
httpConnection.setRequestProperty("User-Agent","NetFox"); tPQ2kEW
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int responseCode=httpConnection.getResponseCode(); ^a: Saq-}
if(responseCode>=400) }x>}:"P;W
{ bwv/{3G,Ys
processErrorCode(responseCode); vr5<LNCLQ
return -2; //-2 represent access is error (8+.#1!*
} hrUm}@d
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String sHeader; \;4L~_2$q
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for(int i=1;;i++) O(b"F?
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{ KBp!zSl
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Z:W')Nd(
//Utility.log(in.readLine()); u66TrYS tG
sHeader=httpConnection.getHeaderFieldKey(i); 56/.*qa
if(sHeader!=null) N^)<)?
{ 7/$nA<qM
if(sHeader.equals("Content-Length")) nI((ki}v
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); +ytT)S
break; 3uB=L7.
} ^d5gz0d
} vY8WqG]
else ^'
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break; /TR"\xQF
} XY&]T'A
} g^Ugl=f,
catch(IOException e){e.printStackTrace ();} /S-/SF:>g
catch(Exception e){e.printStackTrace ();} [J[ysW})W
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Utility.log(nFileLength); .2 N_?
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return nFileLength; b7F3]W<`&