/* X$*
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**SiteFileFetch.java j*5VJ:
*/ R|suBF3
package NetFox; jhLh~.
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import java.io.*; D&shrKFx
import java.net.*; m{*l6`dF
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public class SiteFileFetch extends Thread { B:4u2/!5
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SiteInfoBean siteInfoBean = null; //文件信息Bean
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long[] nStartPos; //开始位置 bbJa,}R
long[] nEndPos; //结束位置 ( ;"ICk&
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ",}VB8K
long nFileLength; //文件长度
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boolean bFirst = true; //是否第一次取文件 /dfZ>k8
boolean bStop = false; //停止标志 JG[+e*8
File tmpFile; //文件下载的临时信息 6voK{C4J
DataOutputStream output; //输出到文件的输出流 o$-Phl
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) Z9U*SS5s,
public SiteFileFetch(SiteInfoBean bean) throws IOException h@J`:KO
{ )d(cXN-T
siteInfoBean = bean; (]1%s?ud*
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ^tah4QmUA
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); zE[c$KPP
if(tmpFile.exists ()) N(9'U0z
{ k2=uP8
bFirst = false; mT.F$Y9
read_nPos(); L,WKL.
} =4zsAa
else HiC\U%We
{ ,'!&Z *
nStartPos = new long[bean.getNSplitter()]; `#R$
nEndPos = new long[bean.getNSplitter()]; r#XDgZtI
} 1Jahu!c?
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} |0&S>%=
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public void run() pk/#+r;
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//获得文件长度 ~ _raI7,
//分割文件 /eI38>v
//实例FileSplitterFetch /nrDU*
//启动FileSplitterFetch线程 alG}Aw#gS
//等待子线程返回 y|p:^41Ro
try{ Qu\E/T`
if(bFirst) p;@PfhEz)
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nFileLength = getFileSize(); /90@ 85%r
if(nFileLength == -1) TC2aD&cw{
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System.err.println("File Length is not known!"); 8]Pf:_e,+
} u(BYRB
else if(nFileLength == -2) ~7ArH9k.
{ xH=&={
System.err.println("File is not access!"); 65AOFH
} 4uz\Me(
else {5to;\.
{ -B_dE-l,
for(int i=0;i<nStartPos.length;i++) 4 QDW}5xB
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); F :u} 7t>
} sK\?i3<?
for(int i=0;i<nEndPos.length-1;i++) _])1P?.
{ y|@^0]}%<
nEndPos = nStartPos[i+1]; H(pOR<`
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nEndPos[nEndPos.length-1] = nFileLength; ';1
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} UpgOU.
} nyIb8=f
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//启动子线程 q)P<lKi
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; $/D@=Pkc
for(int i=0;i<nStartPos.length;i++) _
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{ qYpHH!!C=
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), x[vX|oE!A
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), mU3UQ
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nStartPos,nEndPos,i); )QX9T
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); %(NRH?
fileSplitterFetch.start(); 6@T_1
} Y`M.hYBXk
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ^iGIF~J9
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); S4|)N,#
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", S`J_}>
nEndPos = " + nFileLength); BFMM6-Ve
// fileSplitterFetch[nPos.length-1].start();
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//等待子线程结束 v!x=fjr<
//int count = 0; p@!"x({@l
//是否结束while循环 im&|H-
boolean breakWhile = false; ue`F|
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while(!bStop) .$q]<MK8
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write_nPos(); _ p?q/-[4
Utility.sleep(500); {}>"f]3
breakWhile = true; sx/g5?zh
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for(int i=0;i<nStartPos.length;i++) e\P+R>i0
{
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if(!fileSplitterFetch.bDownOver) #a/lt^}C*
{ ~:JKXa?
breakWhile = false; 08'JT{i id
break; sT/pA^rnnR
} >8RIMW2
} "r[Ea|
if(breakWhile) tmm\V7sJ
break; p1 o?^A&
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//count++; V,>#!zUv
//if(count>4) /
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// siteStop(); BkIvoW_
} "Uyw7
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System.err.println("文件下载结束!"); '2%hc\P6P
} _/KW5
catch(Exception e){e.printStackTrace ();} vK6bpzI
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} OnG!5b
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//获得文件长度 ~M <4HC
public long getFileSize() 7C&`i}/t
{ #!<x|N?_<
int nFileLength = -1; u'=#~'6
try{ SK-|O9Ki
URL url = new URL(siteInfoBean.getSSiteURL()); q6osRK*20
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); K7CiICe
httpConnection.setRequestProperty("User-Agent","NetFox"); xvgIYc{
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int responseCode=httpConnection.getResponseCode(); YrB-;R1+
if(responseCode>=400) >(\[ $
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processErrorCode(responseCode); !FO92 P16
return -2; //-2 represent access is error 0wOgQ n
} dso\+s
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String sHeader; BL]^+KnP
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for(int i=1;;i++) NMOTWA}2
{ xNjA>S\]W5
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); L*FnFRhU
//Utility.log(in.readLine()); d*H-l3N
sHeader=httpConnection.getHeaderFieldKey(i); 8o~\L=
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if(sHeader!=null) _msDf2e9
{ TN l$P~X>
if(sHeader.equals("Content-Length")) GifD>c |z
{ ]bRu8kn
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); LxMOs Nv
break; bG\1<:6B
} {0e5<"i
} !vG._7lPp
else h7o{l7`)
break; 1P6~IZVN
} YP#OI6u
} 0{Tf;a<
catch(IOException e){e.printStackTrace ();} CMTy(Z8_)
catch(Exception e){e.printStackTrace ();} |rNm_L2
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Utility.log(nFileLength); b"x:IDW qG
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return nFileLength; 15 SIZ:Q
} w $2-t
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//保存下载信息(文件指针位置) DNL
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private void write_nPos() _&yQW&vH#
{ QAu^]1 ;
try{ D:){T>
output = new DataOutputStream(new FileOutputStream(tmpFile)); HLk/C[`u,
output.writeInt(nStartPos.length); W&r