/* I*)eP||
**SiteFileFetch.java mkmVDRK
*/ Kx[z7]1@
package NetFox; -[`FNTTV C
import java.io.*; Aonq;} V e
import java.net.*; Th//u I+
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public class SiteFileFetch extends Thread { h?:Y\DlU'
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SiteInfoBean siteInfoBean = null; //文件信息Bean %4E7 Tu,1
long[] nStartPos; //开始位置 =8fZG
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long[] nEndPos; //结束位置 dQL!
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FileSplitterFetch[] fileSplitterFetch; //子线程对象 OG}D;Ew
long nFileLength; //文件长度 QWGFXy,=1
boolean bFirst = true; //是否第一次取文件 !bCLi>8
boolean bStop = false; //停止标志 gBG.3\[
File tmpFile; //文件下载的临时信息 S\UM0G}v
DataOutputStream output; //输出到文件的输出流 +nslS:(
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) R OQIw
public SiteFileFetch(SiteInfoBean bean) throws IOException #8d$%F))
{ p{Gg,.f!HM
siteInfoBean = bean; s2ys>2k
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); WH$
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tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); oYN# T=Xi
if(tmpFile.exists ()) 62LQUl]<
{ *ha9Vq@X
bFirst = false; $bKa"T*
read_nPos(); Fw5r\J87c
} W}1h~rNy
else |KC3^
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nStartPos = new long[bean.getNSplitter()]; E|.D
nEndPos = new long[bean.getNSplitter()]; |Y1<P^
} i=<(fq
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public void run() ;"nEEe]?
{ HnqZ7%jeN
//获得文件长度 0\U28zbMJw
//分割文件 M$gy J!Pb
//实例FileSplitterFetch Z
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//启动FileSplitterFetch线程 9aC>gye!
//等待子线程返回 HF\L`dJX?
try{ tI C_/
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if(bFirst) E%-&!%_>D@
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nFileLength = getFileSize(); yK&)H+v
if(nFileLength == -1) q+o(`N'~G
{ MU&5&)m
System.err.println("File Length is not known!"); _H8)O2mJ
} +o/;bm*U<K
else if(nFileLength == -2) O'-lBf+<
{ Aq|LeH
System.err.println("File is not access!"); <STjB,_s
} pp[? k}@
else m|"MJ P
{ oci-[CI,
for(int i=0;i<nStartPos.length;i++) 9HEc=,D|
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); n5]<|>Uvx
} ^?xXP=/
for(int i=0;i<nEndPos.length-1;i++) ;|/7o@$n
{ }RUC#aW1
nEndPos = nStartPos[i+1]; 6]gs{zG
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nEndPos[nEndPos.length-1] = nFileLength; D1O7S]j
} Vq'&t<K#
} m9xu$z|e
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//启动子线程 XLbrE|0A?
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; SqTm/ t
for(int i=0;i<nStartPos.length;i++)
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{ V`WfJ>{;Z
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), y~S[0]y>
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ypd
nStartPos,nEndPos,i); FJL9x,%6
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); sfrh+o57
fileSplitterFetch.start(); 6y5arP*6e
} Y9w=[[1
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), m&A/IW,.
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); |k+&weuY
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ",
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nEndPos = " + nFileLength); PUYo >eB)0
// fileSplitterFetch[nPos.length-1].start(); a5)[?ol
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//等待子线程结束 Q#g
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//int count = 0; ci^-0l_O
//是否结束while循环 _mkI;<d]$T
boolean breakWhile = false; In;z\"NN4
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while(!bStop) 2iG(v._x
{ $z,bA*j9
write_nPos(); -owfuS?i=
Utility.sleep(500); #i]@"R
breakWhile = true; Xs`:XATb/
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for(int i=0;i<nStartPos.length;i++) &'](T9kg=
{ Nm081ic2<
if(!fileSplitterFetch.bDownOver) gaCGU<L
{ F#<PFT4i
breakWhile = false; .$OInh
break; 1)PR]s:-m@
} r?+u}uH
} /Bwea];^Q
if(breakWhile)
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break; R$3JbR.
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//count++; lb6s3b
//if(count>4) oF6MV&q/
// siteStop(); q,(&2./
} 0,A?*CO
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System.err.println("文件下载结束!"); [qI* ]
} 7S7!
catch(Exception e){e.printStackTrace ();} Y}#^n7*w~
} f:Ja
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//获得文件长度 :hr@>Y~r
public long getFileSize() k2WO*xa*
{ xXYens}
int nFileLength = -1; B*AMo5
try{ R`?^%1^N
URL url = new URL(siteInfoBean.getSSiteURL()); 6;b 'j\jG
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); [;2:lbPx
httpConnection.setRequestProperty("User-Agent","NetFox"); [O)Zof
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int responseCode=httpConnection.getResponseCode(); 3"hR:'ts
if(responseCode>=400) zn x_p/V
{ Sp )}
processErrorCode(responseCode); stG&(M
return -2; //-2 represent access is error @iceMD.
} S- \lN|
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String sHeader; /
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for(int i=1;;i++) eC{Z
{ JT9<kB/07
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); *!/#39
//Utility.log(in.readLine()); H7=z%Y9y
sHeader=httpConnection.getHeaderFieldKey(i); >z
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if(sHeader!=null) t5APD?5 c
{ "3MUrIsB>
if(sHeader.equals("Content-Length")) 4<K`yU]"
{
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); xwxj j
break; h3IkOh4|h
} `4q}D-'TF8
} kZ}u
else PPO<{
break; g DG m32
} NGs9Jke2
} TjK5UML
catch(IOException e){e.printStackTrace ();} 90ag!
catch(Exception e){e.printStackTrace ();} jq)|7_N
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Utility.log(nFileLength); @R&D["!
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return nFileLength; q$rA-`jw
} vUs7#*
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//保存下载信息(文件指针位置) o#) !b:/
private void write_nPos() BZc-
{ <'_GQM`G
try{ Lp)8SmN
output = new DataOutputStream(new FileOutputStream(tmpFile)); D*gVS
output.writeInt(nStartPos.length); O mIB k
for(int i=0;i<nStartPos.length;i++) B/hHkOoo
{ \87J~K'
// output.writeLong(nPos); z]|[VM?4L
output.writeLong(fileSplitterFetch.nStartPos); 9prsL#Fn
output.writeLong(fileSplitterFetch.nEndPos); y(
} 7NC8<