/* hyH "
**SiteFileFetch.java G,FYj'<!7,
*/ H-K,Q%;C@
package NetFox; ;H9d.D8
import java.io.*; :<YcV#!P
import java.net.*; @kK${
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public class SiteFileFetch extends Thread { {.GC7dx
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SiteInfoBean siteInfoBean = null; //文件信息Bean z_~5c
long[] nStartPos; //开始位置 UN>!#Ji:$
long[] nEndPos; //结束位置 snT! 3t
FileSplitterFetch[] fileSplitterFetch; //子线程对象 +R@5e+auQ.
long nFileLength; //文件长度 K'+GK S7.
boolean bFirst = true; //是否第一次取文件 *Em 9R
boolean bStop = false; //停止标志 [ Lt1OdGl
File tmpFile; //文件下载的临时信息 .iNPLz1
DataOutputStream output; //输出到文件的输出流 8zP{Cmm
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) O4ciD1
public SiteFileFetch(SiteInfoBean bean) throws IOException B @H.O!
{ , |CT|2D>
siteInfoBean = bean; O,>1GKw"\
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ja3wXz$2
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); {}H5%W
if(tmpFile.exists ()) In#V1[io
{ W'hE,
bFirst = false; zM%ILv4
read_nPos(); awQf$
} .?UK`O2Q
else vE0Ty9OH"]
{ m=b~Wf39
nStartPos = new long[bean.getNSplitter()]; lG;RfDI-
nEndPos = new long[bean.getNSplitter()]; *G7$wW:?
} uvz}qH@j/Q
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} 7^P!@o$v!
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public void run()
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{ {y0#(8-&
//获得文件长度 }\k"azQ`
//分割文件 FVNxjMm,
//实例FileSplitterFetch R|
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//启动FileSplitterFetch线程 Y[k%<f
//等待子线程返回 4vq,W_n.hQ
try{ xwhH_[
if(bFirst) 2qLRcA=R
{ SV}q8z\
nFileLength = getFileSize(); p(in.Xz
if(nFileLength == -1) 9oKRnc
{ Nlemb:'eP3
System.err.println("File Length is not known!"); 3&.?9
} mE^mQ [Dk
else if(nFileLength == -2) 6 "U&i9
{ [h SE^
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System.err.println("File is not access!"); Q]9H9?}N?
} fz#e4+oH
else R
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{ vU0j!XqE
for(int i=0;i<nStartPos.length;i++) OQ;'Xo
{ Is&z~Xy/
nStartPos = (long)(i*(nFileLength/nStartPos.length)); ]S4 TX
} {Tb(4or?=b
for(int i=0;i<nEndPos.length-1;i++) ,TPNsz|Q
{ s1.YH?A;
nEndPos = nStartPos[i+1]; `W,gYH7
} Tu2BQ4\[
nEndPos[nEndPos.length-1] = nFileLength; 2mN>7Tj:
} WW82=2rJ9
} 7t= e"|^
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//启动子线程 DP **pf%j
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; YzJ\< tkp
for(int i=0;i<nStartPos.length;i++) _Bm/v^(
{ L"6qS3 [=
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), :=WiT_M
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), RO"c+|Py
nStartPos,nEndPos,i); E:/G!1
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); :bFCnV`Q
fileSplitterFetch.start(); 3qU#Rg
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} q'~?azg:
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), H~UxVQLPp
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Njsz=
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Tn2nd
nEndPos = " + nFileLength); ?JO x9;`
// fileSplitterFetch[nPos.length-1].start(); :%cL(',Q
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//等待子线程结束 9,wd,,ta
//int count = 0; 1CK}XLdr
//是否结束while循环 F`KA^ZI
boolean breakWhile = false; ,DsqKXSU
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while(!bStop) +ptVAg+
{ 3;(;'5|Z
write_nPos(); ?n<b:oO
Utility.sleep(500); I:l<t*
breakWhile = true; 2 Pn
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for(int i=0;i<nStartPos.length;i++) l]D?S]{a
{ "\M16N
if(!fileSplitterFetch.bDownOver) b@j**O>[q)
{ 5>+>=)*
breakWhile = false; ZD\`~I|gp
break; COPH)Bdq.
} Y-\/Y*;cd
} &TYTeJ]
if(breakWhile) 5q?2?j/h
break; D#|+PG7
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//count++; Si#I^aF`%
//if(count>4) KPO?eeT.WZ
// siteStop(); ZYDLl8
} a_Y*pOu
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System.err.println("文件下载结束!"); 1%~yb Q
} EUH&"8
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catch(Exception e){e.printStackTrace ();} ^_W+
} DZo7T!
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//获得文件长度 6d/;GyG
public long getFileSize() G q%q x4
{ 3\_ae2GW
int nFileLength = -1; 70bI}/u
try{ dl_ h0
URL url = new URL(siteInfoBean.getSSiteURL()); {"|P
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); OI0#@_L&
httpConnection.setRequestProperty("User-Agent","NetFox"); 2z9\p%MX
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int responseCode=httpConnection.getResponseCode(); =kvfe" N0e
if(responseCode>=400) HE
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{ n,D~ whZx
processErrorCode(responseCode); y'\BpP
return -2; //-2 represent access is error G|eY$5!i
} rMRM*`Q2
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String sHeader; !$&k@#v:
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for(int i=1;;i++) VN!`@Ci/
{ xCU^4DO3p
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); q =sEtH=
//Utility.log(in.readLine()); ":s1}A
sHeader=httpConnection.getHeaderFieldKey(i); al>^}:
if(sHeader!=null) RsV<4$
{ A9Cq(L_H
if(sHeader.equals("Content-Length")) rg Gm[SL*<
{ m(MPVY<X
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ?sfas57&y
break; `o~dQb/k+
} Ia_I~ U$
}
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else K.3)m]dCl
break; %:i; eUKR
} +M4X
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} thG;~W
catch(IOException e){e.printStackTrace ();} &+V6mH9m@
catch(Exception e){e.printStackTrace ();} Z*&y8;vUQ
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Utility.log(nFileLength); ~)>O=nR
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return nFileLength; 1k-YeQNe
} VB
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//保存下载信息(文件指针位置) ;',hwo_LBf
private void write_nPos() {OFbU
{ cp D=9k!*K
try{ 0($@9k4!/
output = new DataOutputStream(new FileOutputStream(tmpFile)); \@G
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output.writeInt(nStartPos.length); X!=E1TL
for(int i=0;i<nStartPos.length;i++) )P&>Tc?;z
{ @J J,$?
// output.writeLong(nPos); CjtBQ5
output.writeLong(fileSplitterFetch.nStartPos); <1")JDW
output.writeLong(fileSplitterFetch.nEndPos); },r30` )Q
} :cDhqBMNr`
output.close(); n~~0iU)
} /S4$qr cM
catch(IOException e){e.printStackTrace ();} j1/.3\
catch(Exception e){e.printStackTrace ();} 8MUY
} +um
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//读取保存的下载信息(文件指针位置) l!r2[T]I@7
private void read_nPos() b6KO_s:'g
{ SvR:tyF
try{ 3FWl_d~uD
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); sEBZ-qql
int nCount = input.readInt(); /u
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nStartPos = new long[nCount]; uu08q<B5b)
nEndPos = new long[nCount]; TL^af-
for(int i=0;i<nStartPos.length;i++) nR%ASUx:Y
{ 06hzCWm#
nStartPos = input.readLong(); S
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nEndPos = input.readLong(); ,'=Tf=wq
} CM$q{;y
input.close(); 3&H#LGoV$
} LjZvWts?
catch(IOException e){e.printStackTrace ();} 4sU*UePr
catch(Exception e){e.printStackTrace ();} j?!BHNs
} ~Sq!P
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private void processErrorCode(int nErrorCode) -TIrbYS`
{ $raxf80A
System.err.println("Error Code : " + nErrorCode); &