/* t(GR)&>.2
**SiteFileFetch.java "8'@3$>R=
*/ jlp:lX
package NetFox; u4m,'XR
import java.io.*; 3:5 &Aa!
import java.net.*; <Gav5Rc
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public class SiteFileFetch extends Thread { PpV'F[|,r
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SiteInfoBean siteInfoBean = null; //文件信息Bean ,\X@~j
long[] nStartPos; //开始位置 >a"Z\\dF
long[] nEndPos; //结束位置 GQ*wc?f3
FileSplitterFetch[] fileSplitterFetch; //子线程对象 u4.ngjJ
long nFileLength; //文件长度 *"WDb|PBb
boolean bFirst = true; //是否第一次取文件 J\J?yo 6
boolean bStop = false; //停止标志 @)-sTgn
File tmpFile; //文件下载的临时信息 !l_lo`)
DataOutputStream output; //输出到文件的输出流 Ad:TYpLD
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) tyfTU5"x
public SiteFileFetch(SiteInfoBean bean) throws IOException 1mfs4
{ {*[\'!d--.
siteInfoBean = bean; 994`ua+
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); %Rz&lh/
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); aaKN^fi&
if(tmpFile.exists ()) HQ|MhM/"
{ klQC2drS
bFirst = false; iS&l8@2a
read_nPos(); )>b.;
} ?s\
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else 3ia^\ jw
{ ?I/qE='*
nStartPos = new long[bean.getNSplitter()]; z>jUR,!GT
nEndPos = new long[bean.getNSplitter()]; }K1JU`Lz
} T|6jGZS^|W
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} M~WijDj
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public void run() b3S.-W{p.
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//获得文件长度 |fxA|/s[<
//分割文件 0q.Ujm=,z
//实例FileSplitterFetch vohoLeJTj
//启动FileSplitterFetch线程 YFE&r
//等待子线程返回 5nTY ?<x`k
try{ *?y+e
if(bFirst)
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{ 6 `Aj%1
nFileLength = getFileSize(); ^zE wA
if(nFileLength == -1) F^N82
{ ]Pry>N3G5
System.err.println("File Length is not known!"); B.g[c97
} y_*PQZ$c<
else if(nFileLength == -2) =`*O1a
{ ZiYm:$CJ
System.err.println("File is not access!"); "Vw m
} fMGbODAvY
else cE`6uq7p
{ CNr/U*+
for(int i=0;i<nStartPos.length;i++) vo\fUT@k
{ P&j(,7
nStartPos = (long)(i*(nFileLength/nStartPos.length)); e{X6i^%
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} Dfps
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for(int i=0;i<nEndPos.length-1;i++) YY&l?*M<
{ S-7'it!1
nEndPos = nStartPos[i+1]; B=>RH!&
} CbPuoOl
nEndPos[nEndPos.length-1] = nFileLength; Oy<5>2^P
} "z0zpHXek
} OkCQ?]
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//启动子线程 5Xl/L
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; NE/m-ILw
for(int i=0;i<nStartPos.length;i++) oq4}3bQ
{ 0O\SU"bP
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ZDD..j
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), WVmq% ,7
nStartPos,nEndPos,i); ddfs8\
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); u)ev{)$TM
fileSplitterFetch.start(); )I^2k4Cg"
} Nc:({@I
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ({-GOw46
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); n6*En7IVh
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", !L;\cl
nEndPos = " + nFileLength); Aub]IO~
// fileSplitterFetch[nPos.length-1].start(); -b9;5eS!
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//等待子线程结束 4q'B<7{Q
//int count = 0; :N<.?%Kf
//是否结束while循环 s:2|c]wQ#R
boolean breakWhile = false; ~6pr0uyO`
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while(!bStop) 3I!?e!y3(
{ -29gL_dk.
write_nPos(); 2u"7T_"2D
Utility.sleep(500); =/u%c!
breakWhile = true; pG34Qw
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for(int i=0;i<nStartPos.length;i++) t~e<z81p
{ ~_9n .C
if(!fileSplitterFetch.bDownOver) b{d4xU8'
{ n:0}utU4
breakWhile = false; bn(`O1r[(
break; 'Q
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} 2+cNo9f
} ik"sq}u_]E
if(breakWhile) l"q1?kaVg
break; /erN;Oo%<
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//count++; <W`#gn0b6
//if(count>4) 4\pWB90V
// siteStop(); j
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} DbZ0e5
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System.err.println("文件下载结束!"); osOVg0Gyj
} +B'8|5tPX
catch(Exception e){e.printStackTrace ();} Z<#hS=eY
} 4<lQwV6=
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//获得文件长度 [L6w1b,
public long getFileSize() kWlAY%
{ /Y&02L%\3s
int nFileLength = -1; *d(SI<j
try{ @v}B6j b;
URL url = new URL(siteInfoBean.getSSiteURL()); LuR,f"%2
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); )jCo%P/
httpConnection.setRequestProperty("User-Agent","NetFox"); d'*]ns
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int responseCode=httpConnection.getResponseCode(); sowd`I~
if(responseCode>=400) 4J|t?]ij|E
{ YC=S5;
processErrorCode(responseCode); T#
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return -2; //-2 represent access is error WKpA|
} !mRx$
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String sHeader; FP#FB$eP
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for(int i=1;;i++) e8h,,:l3j
{ '~ 4pl0TWc
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); T"T;`y@(
//Utility.log(in.readLine()); DY{cQb
sHeader=httpConnection.getHeaderFieldKey(i); e,k2vp!<&
if(sHeader!=null) /<&h@$NHH4
{ ?\/qeGW6G
if(sHeader.equals("Content-Length")) 1^dJg8
{ _TUt9}
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); $&Kq*m 0g
break; >r)X:K+I
} <&pKc6+{
} |!H?+Jj:
else mPPk)qy
break; =s}Xy_+:
} joa5|t!D9
} QM5 .f+/
catch(IOException e){e.printStackTrace ();} 85|fyX
catch(Exception e){e.printStackTrace ();} V8-h%|$p3W
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Utility.log(nFileLength); j2M+]Zp.
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return nFileLength; g,]@4|
} "PH6e bm
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//保存下载信息(文件指针位置) `@`1pOb
private void write_nPos() RGD]8mw
{ 64j|}wJ$
try{ hzY[
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output = new DataOutputStream(new FileOutputStream(tmpFile)); | A:@&|
output.writeInt(nStartPos.length); _7kM]">j
for(int i=0;i<nStartPos.length;i++) 6<Hu8$G|
{ /^#G0f*N
// output.writeLong(nPos); |%D%0TR&Q
output.writeLong(fileSplitterFetch.nStartPos); Zg:gY"^
output.writeLong(fileSplitterFetch.nEndPos); !EF(*~r!9L
} )F pJ1
output.close(); >0Ev#cX4
} m@rSz
catch(IOException e){e.printStackTrace ();} Ep ~wWQh
catch(Exception e){e.printStackTrace ();} ~2uh'e3
} U5/qf8)yO
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//读取保存的下载信息(文件指针位置) -DO&