/* --5F*a{R|
**SiteFileFetch.java -YA,Stc-
*/ n:5M
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package NetFox; [X(4( 1i
import java.io.*; AC,RS7
import java.net.*; lzEynMO+
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public class SiteFileFetch extends Thread { 7~7L5PRW
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SiteInfoBean siteInfoBean = null; //文件信息Bean ^tB1Nu%
long[] nStartPos; //开始位置 Vj*-E
long[] nEndPos; //结束位置 -%asHDQ{
FileSplitterFetch[] fileSplitterFetch; //子线程对象 }3(!kW
long nFileLength; //文件长度
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boolean bFirst = true; //是否第一次取文件 N^L@MR-
boolean bStop = false; //停止标志 /R#zu_i
File tmpFile; //文件下载的临时信息 DR#" 3
DataOutputStream output; //输出到文件的输出流 ]E`<8hRB
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) &\h7E
public SiteFileFetch(SiteInfoBean bean) throws IOException B8@mL-Z-;
{ cAWn*%
siteInfoBean = bean; &K^0PzWWof
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); dOhSqx56
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); v] m/$X2
if(tmpFile.exists ()) QYH-"-)
{ SI7rTJ]/
bFirst = false; >ahDc!Jyu
read_nPos(); AxEyXT( h5
} :j\7</uu
else -Jd|H*wWo
{ ,-UF5U
nStartPos = new long[bean.getNSplitter()]; H/,KY/>i
nEndPos = new long[bean.getNSplitter()]; `|t,Uc|7!
} RT[p!xL
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} "hIYf7r##
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public void run() sx,$W3zI'G
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//获得文件长度 (NJ{>@&
//分割文件 'xW=qboOp
//实例FileSplitterFetch .3
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//启动FileSplitterFetch线程 JPI%{@Qc^
//等待子线程返回 8hGyh#
try{ +gl\l?>sr
if(bFirst) Aztrq
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nFileLength = getFileSize(); UP](1lAf
if(nFileLength == -1) [LVXXjkFI
{ 2?,Jn&i5
System.err.println("File Length is not known!"); (UkP AE
} Fa("Gok[
else if(nFileLength == -2) ;&d#)&O"e
{ h.<f%&)F
System.err.println("File is not access!"); is;g`m
} [$dVs16K
else f;E#CjlTL
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for(int i=0;i<nStartPos.length;i++) b4L7M1l
{ [RF,0>^b
nStartPos = (long)(i*(nFileLength/nStartPos.length)); d9{lj(2P
} *@rA7zPFf
for(int i=0;i<nEndPos.length-1;i++) r8:r}Qj2w[
{ A
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nEndPos = nStartPos[i+1]; GcO2oq
} N{Sp-J>
nEndPos[nEndPos.length-1] = nFileLength; XIcUoKg^
} /&gg].&2?
} y|LHnNQ
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//启动子线程 &}DfIP<
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; <H-Nft>O
for(int i=0;i<nStartPos.length;i++) Sca"LaW1
{ p?gm=b#
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), oidZWy
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), dGZie.Zx
nStartPos,nEndPos,i); KjGu !B
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); t$BjJ -G
fileSplitterFetch.start(); ,dRaV</2
} G)vNMl
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), FC0fe_U(F
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ::Zo` vP
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ;yNc7Vl
nEndPos = " + nFileLength); ~"+"6zg
// fileSplitterFetch[nPos.length-1].start(); /
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//等待子线程结束 ~b_DFj
//int count = 0; )n&hO_c/
//是否结束while循环 %+*=Vr
boolean breakWhile = false; *'((_NZ>
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while(!bStop) DI\=udN
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write_nPos(); w)dnmrKDZg
Utility.sleep(500); FL{Uz+Q
breakWhile = true; bq/Aopfr
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for(int i=0;i<nStartPos.length;i++)
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{ PK]3uh
if(!fileSplitterFetch.bDownOver) $tZ
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breakWhile = false; w/|&N>ZOx
break; lDL&":t
} Gxw1P@<F:
} B=0^Rysg
if(breakWhile) nCY kUDnZ
break; W3le)&
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//count++; J*;RL`
//if(count>4) a7g;8t-&
// siteStop(); G*9(O:
} TUfj\d,
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System.err.println("文件下载结束!"); &N^j
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} h%/BZC^L]|
catch(Exception e){e.printStackTrace ();} i.mv`u Dm
} }Ulxt:}
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//获得文件长度 I !hh_
public long getFileSize() }a;xs};X;
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int nFileLength = -1; Mq\=pxC@
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URL url = new URL(siteInfoBean.getSSiteURL()); 1GYZ1iA
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); $yx\2
httpConnection.setRequestProperty("User-Agent","NetFox"); kyHli~Nr"
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int responseCode=httpConnection.getResponseCode(); ^`cv6;)
if(responseCode>=400) RBQ8+^
{ 6*Z7JiQ0
processErrorCode(responseCode); WZ-~F/:c%
return -2; //-2 represent access is error 0=>$J
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} Xl4}S"a
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String sHeader; a&'9[9E1
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for(int i=1;;i++) }PI:O%N;
{ &qbEF3p^@
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ov+{<0Q
//Utility.log(in.readLine()); j:%,lcF
sHeader=httpConnection.getHeaderFieldKey(i); &@lfr623
if(sHeader!=null) `jeATxWv
{ -m^-p
if(sHeader.equals("Content-Length")) E
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{ mOJdx-q?r
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); &. =8Q?
break; J.UNw8z
} OJm ]gb7
} *tv&