/* A1zV5-E/
**SiteFileFetch.java bDw\;bnG
*/ 7S&O{Q7)
package NetFox; fB; o3!y
import java.io.*; iu+H+_
import java.net.*; hoPh#? G
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public class SiteFileFetch extends Thread { W89J]#v)k
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SiteInfoBean siteInfoBean = null; //文件信息Bean $U_1e'
long[] nStartPos; //开始位置 jI}{0LW&F&
long[] nEndPos; //结束位置 QmPHf*w[
FileSplitterFetch[] fileSplitterFetch; //子线程对象 E&W4`{6K4
long nFileLength; //文件长度 OHF:E44k
boolean bFirst = true; //是否第一次取文件 c%n%,R>
boolean bStop = false; //停止标志 | qf8y
File tmpFile; //文件下载的临时信息 Q},uM_"+
DataOutputStream output; //输出到文件的输出流 LTD;
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) /z,+W9`
public SiteFileFetch(SiteInfoBean bean) throws IOException QF_K^(
{ %}Ob~m>P
siteInfoBean = bean; '-X913eG!
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); KI<Vvcm
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); dG]s_lb9H
if(tmpFile.exists ()) b9Ix*!Y
{ %1]Lc=[j
bFirst = false; I03
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read_nPos(); flfE~_
} G Q+g.{c
else h5#V,$
{ N`rOlEk
nStartPos = new long[bean.getNSplitter()]; =gr3a,2
nEndPos = new long[bean.getNSplitter()]; W>7 o
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} oG;;='*
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} vV9q5Bj:
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public void run() Ijj]_V{,
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//获得文件长度 r5?qz<WW~
//分割文件 bMw)>4
//实例FileSplitterFetch A,qWg0A]nt
//启动FileSplitterFetch线程 d6k`=Hlg
//等待子线程返回 V qW(S1w
try{ k/#& ]8(
if(bFirst) AiO29<
{ "i1~YE
nFileLength = getFileSize(); l0$
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if(nFileLength == -1) B/CP/Pfb
{ pJ#R :#P
System.err.println("File Length is not known!"); ^25[%aJI
} ^\<1Y''
else if(nFileLength == -2) daZY;_{"o
{ 7Jm9,4]
System.err.println("File is not access!"); 8Mq]
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} \TrhJ
else n'JwT!
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{ B jR:#*<qD
for(int i=0;i<nStartPos.length;i++) {^bs
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{ f&Bu_r
nStartPos = (long)(i*(nFileLength/nStartPos.length)); )nS;]7pB@
} <c6C+OWT,
for(int i=0;i<nEndPos.length-1;i++) .;n<k
{ zKWcDbj
nEndPos = nStartPos[i+1]; Au,}5=+`P
} +S:(cz80V
nEndPos[nEndPos.length-1] = nFileLength; 7b,u|F
} P~:W+!@5v
} 16YJQ ue
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//启动子线程 w8(qiU
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; |YQ:4'^"
for(int i=0;i<nStartPos.length;i++) *IGgbg[0
{ Au"[2cG
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), SN'LUwaMp!
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), $_l@k=
nStartPos,nEndPos,i); M*E4:A9_M
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 2|#3rF
fileSplitterFetch.start(); :D ?%!Q 0
} fdN-Zq@'
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), l0b Y
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 5Y)!q?#H
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", o;\0xuM@
nEndPos = " + nFileLength); ?PSm)
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// fileSplitterFetch[nPos.length-1].start(); Q4Q*5>
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//等待子线程结束 >GgX-SZ%
//int count = 0; nKh._bvfX
//是否结束while循环 \p.Byso,
boolean breakWhile = false; ^C@uP9g
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while(!bStop) ZsUxO%jP
{ ~|pVz/s|G
write_nPos(); VA)3=82n
Utility.sleep(500); #=b_!~:%
breakWhile = true; ?Gj$$IAe
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for(int i=0;i<nStartPos.length;i++) iH(
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{ qw0tw2|
if(!fileSplitterFetch.bDownOver) fh
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{ `t: 7&$>T
breakWhile = false; 3.Qf^p
break; 0: h;ots'
} 9.lSF
} KcfW+>W3
if(breakWhile) AzN.vA)q
break; v(=fV/
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//count++; Q]w;o&eo
//if(count>4) jY:(Tv3~
// siteStop(); -t?S:9[w
} +fAAkO*GP
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System.err.println("文件下载结束!"); NV*aHci
} ?9v!UT
catch(Exception e){e.printStackTrace ();} E`iT>+LG<
} 0X0HDQ
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//获得文件长度 `wB(J%w
public long getFileSize() A]BG*
{ W8yr06{]
int nFileLength = -1; E7^tU416
try{ 0d`s(b54;O
URL url = new URL(siteInfoBean.getSSiteURL()); emw3cQ
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ;r-
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httpConnection.setRequestProperty("User-Agent","NetFox"); >Bskw2
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int responseCode=httpConnection.getResponseCode(); ilayU
if(responseCode>=400) JF%+T yMe
{ Si6%6rAhj
processErrorCode(responseCode); ?*4&Z.~J
return -2; //-2 represent access is error q'3=
} H]UM2.
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String sHeader; !7AW_l9`i
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for(int i=1;;i++) G}BO!Z6
{ G:c)e,pD
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); N:d`L+tcc
//Utility.log(in.readLine()); x?va26FV
sHeader=httpConnection.getHeaderFieldKey(i); lsY5QE:Qrp
if(sHeader!=null) .9lx@6]+
{ {\;CGoN|
if(sHeader.equals("Content-Length")) `Kpn@Xg
{ ;8|uY%ab
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); _D$|lk-
break; <3O>
} asj^K|.z
} =MB[v/M59w
else SD8Q_[rY
break; h[ba$S,T
} y''`73U"
} "CT'^d+
catch(IOException e){e.printStackTrace ();} <[ 8at6;
catch(Exception e){e.printStackTrace ();} `L]cJ0tAs
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Utility.log(nFileLength); &P&M6v+
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return nFileLength; &h`s:Y
} (O\5gAx
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//保存下载信息(文件指针位置) / /3iai
private void write_nPos() Cc$!TZq=
{ (}V.xi
try{ Owo2DsT t
output = new DataOutputStream(new FileOutputStream(tmpFile)); yS@c2I602
output.writeInt(nStartPos.length); &UEr4RK;I
for(int i=0;i<nStartPos.length;i++) HIk5Q'e k
{ Ha[Bf*
// output.writeLong(nPos); i!*w'[G->Y
output.writeLong(fileSplitterFetch.nStartPos); ]- " )r
output.writeLong(fileSplitterFetch.nEndPos); B~D{p t3y
} \v)Dy)Vhg2
output.close(); b" 1a7
} lr=? &>MXj
catch(IOException e){e.printStackTrace ();} "4<RMYQ
catch(Exception e){e.printStackTrace ();} &-:ZM0Fl
} M56^p,
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//读取保存的下载信息(文件指针位置) ['~3"lK^O
private void read_nPos() yAy~|1}
{ ~pO6C*"
try{ "T=Z/@Vy
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); !trt]?*-
int nCount = input.readInt(); %YkJA:
nStartPos = new long[nCount]; 6}6;%{p"Gu
nEndPos = new long[nCount]; uUB,OmLN
for(int i=0;i<nStartPos.length;i++) )e d5~ok
{
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