/* p54e'Zb
**SiteFileFetch.java 4OOI$J$Jh
*/ .k!<Oqa
package NetFox; q~. .Z Y`7
import java.io.*; ,8[R0wsBaz
import java.net.*; \ lW*.<
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public class SiteFileFetch extends Thread { lk4U/:
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SiteInfoBean siteInfoBean = null; //文件信息Bean Ju-#F@38
long[] nStartPos; //开始位置 b
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long[] nEndPos; //结束位置 n,#o6ali>
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ]u|5ZCv0
long nFileLength; //文件长度 s:xt4<
boolean bFirst = true; //是否第一次取文件 nTv^][
boolean bStop = false; //停止标志 &8HJ4Vj2
File tmpFile; //文件下载的临时信息 +8}8b_bgH
DataOutputStream output; //输出到文件的输出流 8}aSSL]
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) \2 Yo*jE}
public SiteFileFetch(SiteInfoBean bean) throws IOException a|-B# S
{ V~7Oa2'#B
siteInfoBean = bean; wBCBZs$H
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ^tL]QE?|
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Mj W{JR)I
if(tmpFile.exists ()) 0`4Fa^o]h
{ =zW`+++3
bFirst = false; @NYlVk2
read_nPos(); .h-k*F0Ga)
} goZw![4l
else >p29|TFbV
{ 04c`7[
nStartPos = new long[bean.getNSplitter()]; TBmmC}PEd
nEndPos = new long[bean.getNSplitter()]; :gM_v?sy
} ts &sr
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} OzV|z/R2'
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public void run() _N"c,P0
{ fBLR
//获得文件长度 _|>bOI
//分割文件 i\zN1T_
//实例FileSplitterFetch MZt&HbD-
//启动FileSplitterFetch线程 a?X#G/)
//等待子线程返回 :0% $u>;O:
try{ )U+&XjK
if(bFirst) :+<GJj_d+
{ Ai~d
nFileLength = getFileSize(); e@ DVf
if(nFileLength == -1) a/Cc.s
{ 7
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System.err.println("File Length is not known!"); ,#.9^J
} m^;A]0h+
else if(nFileLength == -2) D26A%[^O
{ T#3`&[
System.err.println("File is not access!"); `;Xwv)
} s;,ulME
else YH3[Jvzf4
{ 9u1Fk'cxG,
for(int i=0;i<nStartPos.length;i++) yHmNO*(
{ ]4[^S.T=
nStartPos = (long)(i*(nFileLength/nStartPos.length)); #{~3bgY
} gcF V$
for(int i=0;i<nEndPos.length-1;i++) ;m}o$`
{ Lu[xoQ~I
nEndPos = nStartPos[i+1]; l j %k/u
} ?m h0^G
nEndPos[nEndPos.length-1] = nFileLength; M5{vYk>,1Q
} +IM6 GeH
} XBos^Q
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//启动子线程 0E`6g6xMS
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; &Ui&2EW
for(int i=0;i<nStartPos.length;i++) e
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{ 9=G
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), *cc|(EM
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 3&Fqd
nStartPos,nEndPos,i); :i]g+</
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Cgn@@P5ZC
fileSplitterFetch.start(); oI9-jW
} u\@L|rh
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), QW>(LG G=
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); h<FEe~
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", [zhcb+^5l
nEndPos = " + nFileLength); O;RNmiVoq
// fileSplitterFetch[nPos.length-1].start(); ;Rd\yAG
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//等待子线程结束 {ud^+I&
//int count = 0; $F~hL?"?
//是否结束while循环 Ffr6P
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boolean breakWhile = false; (=w ff5U
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while(!bStop) fZt3cE\
{ &:Sb$+z
write_nPos(); K9Bi2/N
Utility.sleep(500); #*;Nb
breakWhile = true; /[Sy;wn
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for(int i=0;i<nStartPos.length;i++) 'q*:+|"
{ E']Gh
if(!fileSplitterFetch.bDownOver) Wg5i#6y8w
{ et :v4^*f
breakWhile = false; 6T=zHFf~
break; }NETiJ"6
} 8A|i$#.&
} 2s8(r8 AI
if(breakWhile) 0%5x&vx'S
break; z,/y2H2
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//count++; My\
//if(count>4) V39)[FH}
// siteStop(); >jBnNA@
} o!M*cyq
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System.err.println("文件下载结束!"); &<%U7?{~
} w\3'wD!
catch(Exception e){e.printStackTrace ();} 7`6JK
} Id'@!U:NA
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//获得文件长度 [8C6%n{W
public long getFileSize() &-6D'@
{ k0R;1lZ0n
int nFileLength = -1; |A@Gch fd
try{ =v]eQIp
URL url = new URL(siteInfoBean.getSSiteURL()); 3a#j&]
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 9@|X~z5E
httpConnection.setRequestProperty("User-Agent","NetFox"); b3!,r\9V
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int responseCode=httpConnection.getResponseCode(); _G5MQ%z
if(responseCode>=400) yy-\$<j
{ zVs|go>F
processErrorCode(responseCode); aXefi'!6
return -2; //-2 represent access is error ~+Da`Wp
} wuTCdBu6hU
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String sHeader; xj!_]XJ^w
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for(int i=1;;i++) R!.HS0i.
{ c~UYs\
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); }qOC*k:
//Utility.log(in.readLine()); $0K%H
sHeader=httpConnection.getHeaderFieldKey(i); o$r]Z1
if(sHeader!=null) 1f1J'du
{ <U$A_]*w
if(sHeader.equals("Content-Length")) #Rdq^TGMi;
{ weiqt
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); /< CjBW:
break; q>q@ztt
} '3@WF2a
} 6'6@VB
else >AW=N
break; '2%/h4jY
} =}~hbPJM
} KCed!OJ+
catch(IOException e){e.printStackTrace ();} S,,3h0$X
catch(Exception e){e.printStackTrace ();} 3f:I<S7
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Utility.log(nFileLength); YA>du=6y\
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return nFileLength; <`q|6XWL
} (&$|R\W.
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//保存下载信息(文件指针位置) Yn}_"FO'
private void write_nPos() |8"~ou:.
{ -$4%@Z
try{ VBssn]w
output = new DataOutputStream(new FileOutputStream(tmpFile)); 3EcmNwr
output.writeInt(nStartPos.length); <z|? C
for(int i=0;i<nStartPos.length;i++) G?]E6R
{ EhybaRy;C
// output.writeLong(nPos); q'?:{k$%
output.writeLong(fileSplitterFetch.nStartPos); hqY9\,.C
output.writeLong(fileSplitterFetch.nEndPos); ${ ~UA6
} MNiu5-g5
output.close(); p\8cl/~
} (;a
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catch(IOException e){e.printStackTrace ();} J7.bFW'
catch(Exception e){e.printStackTrace ();} 1h+!<