/* r|0wIpi6Q
**SiteFileFetch.java L=-v>YL+
*/ K Fn[
package NetFox; 0r'<aA`=I
import java.io.*; aiwKkf`\
import java.net.*; J4^aD;j
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public class SiteFileFetch extends Thread { 0X4%Ccs
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SiteInfoBean siteInfoBean = null; //文件信息Bean Jhr3[A
long[] nStartPos; //开始位置 ;=E!xfp5U
long[] nEndPos; //结束位置 o"e]9{+<
FileSplitterFetch[] fileSplitterFetch; //子线程对象 x`gsD3C
long nFileLength; //文件长度 4^AdSuV
boolean bFirst = true; //是否第一次取文件 Qj',&b
boolean bStop = false; //停止标志 .l ufE
File tmpFile; //文件下载的临时信息 e"ur+7
DataOutputStream output; //输出到文件的输出流 |qX[Dk
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 4lpkq
public SiteFileFetch(SiteInfoBean bean) throws IOException s&~i S[
{ -}Q^A_xK
siteInfoBean = bean; qK12:
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); je^=g nq
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); $Z{Xt*
if(tmpFile.exists ()) 2<8JY4]!]
{ ' lMPI@C6r
bFirst = false; `\5u/i'Ca!
read_nPos(); ?*2Uw{~}
} zDx*R3%
else };s8xGW:k3
{ 7xy[;
nStartPos = new long[bean.getNSplitter()]; 1;N5@0%p
nEndPos = new long[bean.getNSplitter()]; E [b6k&A
} l5esx#([*R
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} %[H|3
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public void run() zKX|m-i|2
{ !;s5\91
//获得文件长度 t*{BN>B
//分割文件 r*XEne
//实例FileSplitterFetch i*ErxWzu
//启动FileSplitterFetch线程 68-2EWq
//等待子线程返回 l#k&&rI5x.
try{ 4<Q^/-W
if(bFirst) Rx%SeM2
{ ;<)<4N"
nFileLength = getFileSize(); )$7-CNWr~
if(nFileLength == -1) Emx`+9
{ KBkS>0;X
System.err.println("File Length is not known!"); Cqc5jx0)
} 0mD=Rjb*a
else if(nFileLength == -2) \zGmZZ
{ f?|cQ[#t!\
System.err.println("File is not access!"); z*B-`i.
} @<,YUp,%S
else b'$fr6"O1
{ p`2w\P3;)
for(int i=0;i<nStartPos.length;i++) uKE?VNC]
{ EX9os
nStartPos = (long)(i*(nFileLength/nStartPos.length)); |v31weD8
} t1MK5B5jH
for(int i=0;i<nEndPos.length-1;i++) N#zh$0!8bJ
{ TZYz`l+v
nEndPos = nStartPos[i+1]; ~gJJ@j 0n
} <b$.{&K
nEndPos[nEndPos.length-1] = nFileLength; t2 0Es
} U+wfq%Fz
} }10ZPaHjl+
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//启动子线程 ~|5B
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; #<EMG|&(
for(int i=0;i<nStartPos.length;i++) >0Gdxj]\
{ bL9vjD'}
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ;'~GuZ#I
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 9E-]S'Z
nStartPos,nEndPos,i); r;
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Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); [OK(
fileSplitterFetch.start(); W5_aS2$
} VYC$Q;Z
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), @^UnrKSd
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); l11+sqg
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", $>=?'wr
nEndPos = " + nFileLength); 1}Mdo&:t
// fileSplitterFetch[nPos.length-1].start(); fA{t\
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//等待子线程结束 ]mSkjKw
//int count = 0; t],5{UF
//是否结束while循环 Z/~7N9?m(
boolean breakWhile = false; cH>3|B*y
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while(!bStop) }G53"
{ B9i<="=p
write_nPos(); "yA=Tw
Utility.sleep(500); I@jXW>$
breakWhile = true; oW\kJ>!
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for(int i=0;i<nStartPos.length;i++) uEX+j
{ W34_@,GD
if(!fileSplitterFetch.bDownOver) GZCX m+
{
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breakWhile = false; #$;i 4a
break; ll8Zo+-[
}
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} CS|al(?~
if(breakWhile) R7Z7o4jg
break; "B3&v%b
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//count++; +fRABY5C
//if(count>4) Wi%e9r{hU
// siteStop(); +\/1V`
} Wt
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System.err.println("文件下载结束!"); TQ&1!~L*
} '%y5Dh
catch(Exception e){e.printStackTrace ();} Q$lgC
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} <7R+p;y
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//获得文件长度 !)-)*T
public long getFileSize() g;mX {p_@
{ >pRC$'Usx
int nFileLength = -1; f<;w1sM\
try{ Y~"5HP|
URL url = new URL(siteInfoBean.getSSiteURL()); c[<>e#s+;
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 8o%g2 P9.
httpConnection.setRequestProperty("User-Agent","NetFox"); xixdv{M<FF
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