/* c^gIK1f-
**SiteFileFetch.java ~*]`XL.-
*/ ^b.
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package NetFox; j;'Wf[V
import java.io.*; Z6@J-<u
import java.net.*; 'yjH~F.
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public class SiteFileFetch extends Thread { Rw8m5U
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SiteInfoBean siteInfoBean = null; //文件信息Bean ZTC1t_
long[] nStartPos; //开始位置 V
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long[] nEndPos; //结束位置 |CqJ2
FileSplitterFetch[] fileSplitterFetch; //子线程对象 L
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long nFileLength; //文件长度 <&Xq`i/(
boolean bFirst = true; //是否第一次取文件 7V``f:#d
boolean bStop = false; //停止标志 FQ1oqqr
File tmpFile; //文件下载的临时信息 *lF%8k"Al
DataOutputStream output; //输出到文件的输出流 .g?,:$`0D?
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) WN1-J(x6
public SiteFileFetch(SiteInfoBean bean) throws IOException C
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{ o@;_(knb
siteInfoBean = bean; <t@*[Aw
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ID+k`nP
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Mwk_SCy
if(tmpFile.exists ()) cBf{R^>Fd
{ ^C|9K>M
bFirst = false; 8{t&8Ql n
read_nPos(); 6u;(R0n
} umn^QZ,
else n9-[z2n
{ `:O.g9
nStartPos = new long[bean.getNSplitter()]; @!O{>`
nEndPos = new long[bean.getNSplitter()]; Z"T(8>c;g
} r0bPaAKw
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public void run() A@'W $p?5r
{ E=trJge
//获得文件长度 ^uzVz1%mM
//分割文件 1`\kXaG
//实例FileSplitterFetch Mp=+*I[
//启动FileSplitterFetch线程 3s`3}DKK
//等待子线程返回 /=} vPey
try{ VNXVuM )c
if(bFirst) nP31jm+A
{ .CpO+z
nFileLength = getFileSize(); l/NK.Jr
if(nFileLength == -1) X\RTHlw']
{ hZJqo + s
System.err.println("File Length is not known!"); "r+<=JU>OV
} 1X.1t^HH:
else if(nFileLength == -2) hDsORh!i
{ czRh.kz,
System.err.println("File is not access!"); AFED YRX
} T,>e\
else 4*W7{MPY
{ 4iW2hV@m
for(int i=0;i<nStartPos.length;i++) fh<G&E8
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{ bnQO}G
nStartPos = (long)(i*(nFileLength/nStartPos.length)); .5xg;Qg\Y
} =1capix 1r
for(int i=0;i<nEndPos.length-1;i++) $0t
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{ gs>cx]>
nEndPos = nStartPos[i+1]; ~!kbB4`WK
} ;v\n[
nEndPos[nEndPos.length-1] = nFileLength; N/VIP0Kb
} -Ma"V
} tEs$+b
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//启动子线程 xd@DN;e
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; p<e~x/@m*
for(int i=0;i<nStartPos.length;i++) A[bxxQSP\H
{ A?zW!'
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), CG;D (AWR;
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), a06DeRCej
nStartPos,nEndPos,i); oMbCljUC
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); rg~CF<
fileSplitterFetch.start(); Xv:IbM>
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} swrd
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), M-gjS6c\3
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 8>9+w/DL
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Ui&$/%Z|
nEndPos = " + nFileLength); X;NTz75
// fileSplitterFetch[nPos.length-1].start(); %54![-@
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//等待子线程结束 p%-9T>og
//int count = 0; ?da 3Azp
//是否结束while循环 p'*UM%@SIY
boolean breakWhile = false; 9iE66N>z
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while(!bStop) rpmDr7G
{ !w Bmf&=
write_nPos(); .$iIr:Tc>
Utility.sleep(500); U|nk86r
breakWhile = true; i}19$x.D`
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for(int i=0;i<nStartPos.length;i++) 1F|+4
{ n C^'2z
if(!fileSplitterFetch.bDownOver) uM8gfY)OI
{ '\Ub*m((1O
breakWhile = false; Qp,l>k
break; F`u~Jx8.*
} y(k2p
} O]>`B{
if(breakWhile) C0RwW??t
break; \2jY)UrQs
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//count++; q}jf&xUWzH
//if(count>4) $((<le5-)
// siteStop(); ZE^de(Fm
} '<Gqu_-
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System.err.println("文件下载结束!"); xph60T
} he Wb(E&
catch(Exception e){e.printStackTrace ();} ,l6W|p?ZO^
} d\v _!7
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//获得文件长度 w9%gaK;
public long getFileSize() ,#G@ri:B
{ Z=|@76
int nFileLength = -1; _OY ;SJ(
try{ 5IMH G%W7
URL url = new URL(siteInfoBean.getSSiteURL()); E !8y|_(j
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); NmQ]qv
httpConnection.setRequestProperty("User-Agent","NetFox"); 9O"?T7i"#
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int responseCode=httpConnection.getResponseCode(); G\Me%{b#
if(responseCode>=400) P(`IY+
{ JI&>w-~D
processErrorCode(responseCode); Ij+zR>P8=\
return -2; //-2 represent access is error Fv9Z'#t
} 'Khq!pC
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