/* TO#Pz.)>B6
**SiteFileFetch.java h<l1U'Bn7
*/ /-M@[p&
package NetFox; ,kM)7!]N
import java.io.*; /X*oS&-M
import java.net.*; #x@ eDnb_
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public class SiteFileFetch extends Thread { ccJM>9
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SiteInfoBean siteInfoBean = null; //文件信息Bean z\!K<d"Xv
long[] nStartPos; //开始位置 X[3}?,aqL
long[] nEndPos; //结束位置 Ip
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FileSplitterFetch[] fileSplitterFetch; //子线程对象 U5r}6D!)
long nFileLength; //文件长度 cj$6
boolean bFirst = true; //是否第一次取文件 svhI3"r
boolean bStop = false; //停止标志 kxB.,'
File tmpFile; //文件下载的临时信息 g P}+wbk
DataOutputStream output; //输出到文件的输出流 IDFFc&
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 5/0j}_pP
public SiteFileFetch(SiteInfoBean bean) throws IOException 1DJekiWf
{ (p)!Mq
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siteInfoBean = bean; sM2MLh 'D
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Xrqx\X
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); $'wq1u
if(tmpFile.exists ())
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{ dA~
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bFirst = false; 5K%Wa]W
read_nPos(); {MBTP;{*~
} }"s;\?a
else #ToK$8
{ lS5ny
nStartPos = new long[bean.getNSplitter()]; <i. apBH
nEndPos = new long[bean.getNSplitter()]; /Lf6WMit
} V"KS[>>f
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} SZU
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public void run() Kq6jw/T
{ mI1H!
//获得文件长度 p*3; hGp6
//分割文件 Sv[ 5NZn0&
//实例FileSplitterFetch &(pjqV
//启动FileSplitterFetch线程 Lxl_"kG
//等待子线程返回 I:j3sy
try{ ~mz%E
if(bFirst) @mQ:7-,~
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nFileLength = getFileSize(); Gu0 ,)jy\
if(nFileLength == -1) #
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{ QO;4}rq
System.err.println("File Length is not known!"); KW3+luI6
} Li{~=S@N*
else if(nFileLength == -2) 2[yBD-":
{ N:5[,O<m_
System.err.println("File is not access!"); )6X.Nfkb^k
} -7qIToO.
else fz_nsVD
{
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for(int i=0;i<nStartPos.length;i++) Q;/a F`
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); >]D4Q<TY
} @* ust>7
for(int i=0;i<nEndPos.length-1;i++) e /K#>,
{ J5M+FwZq
nEndPos = nStartPos[i+1]; ?\=/$Gt
} `CE^2
nEndPos[nEndPos.length-1] = nFileLength; J>vMo@
} <'U]`Lp
} Qx3eLfm
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//启动子线程 +>f<EPGn
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; Q9F)
for(int i=0;i<nStartPos.length;i++) W&Y"K)`
{ VyLH"cCv
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), eDKxn8+(H
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), [#^#+ |{\
nStartPos,nEndPos,i); >h~IfZU1
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); `|Z}2vo;j
fileSplitterFetch.start(); kma?v B
} coE&24,0
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), .x83Ah`
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Pt,ebL~
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", CB\{!
nEndPos = " + nFileLength); z`@^5_
// fileSplitterFetch[nPos.length-1].start(); 7E$&2U^Js
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//等待子线程结束 *~XA'Vw!
//int count = 0; Kb;dKQ
//是否结束while循环 /7c~nBU
boolean breakWhile = false; $rB3m~c|
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while(!bStop) p/6zEZ*
{ p
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write_nPos(); Dr<='Ux[5
Utility.sleep(500); k`KGB
breakWhile = true; <!d"E@%v@
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for(int i=0;i<nStartPos.length;i++) h!@,8y[B
{ JtKp(k&
if(!fileSplitterFetch.bDownOver) <i?a0
{ ^Mkk@F&1
breakWhile = false; `TqSQg_l
break; Qq& W3
} w0m^ &,;#
} @exey
if(breakWhile) R6;Phdh<>
break; b,H[I!. %
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//count++; 6aO2:|:yP
//if(count>4) gO?44^hMe
// siteStop(); @LE[ac
} f7urJ'!V
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System.err.println("文件下载结束!"); 0rSIfYZa
} \`.F\Z
catch(Exception e){e.printStackTrace ();} E8\XNG)V4
} -[7O7'
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//获得文件长度 y8Xv~4qQW
public long getFileSize() 5i6
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int nFileLength = -1; `m@U!X
try{ : 9!%ZD
URL url = new URL(siteInfoBean.getSSiteURL()); "bQ[CD
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); j F"YTr6
httpConnection.setRequestProperty("User-Agent","NetFox"); >cMd\%^t
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int responseCode=httpConnection.getResponseCode(); w?vVVA
if(responseCode>=400) .Ce8L&