/* *fN+wiPD
**SiteFileFetch.java 6A"$9sj6
*/ oU=vl!\J
package NetFox; Y"FV#<9@7E
import java.io.*; $N?8[
import java.net.*; /k'7j*t Z
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public class SiteFileFetch extends Thread { \%7*@&
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SiteInfoBean siteInfoBean = null; //文件信息Bean xpdpD
long[] nStartPos; //开始位置 ~kW?]/$h
long[] nEndPos; //结束位置 +tPBm{|
FileSplitterFetch[] fileSplitterFetch; //子线程对象 <8WFaP3,
long nFileLength; //文件长度 qzW3MlD
boolean bFirst = true; //是否第一次取文件 7(@xk_Pl
boolean bStop = false; //停止标志 yTZev|ej@
File tmpFile; //文件下载的临时信息 |))NjM'ZBl
DataOutputStream output; //输出到文件的输出流 'i+L
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) B&cIx~+
public SiteFileFetch(SiteInfoBean bean) throws IOException r;Sk[Y5#
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siteInfoBean = bean; :T-DxP/
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); +bumWOQ'
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); }40T'y
if(tmpFile.exists ()) '| i?-(f)
{ 0B.Gt&Oal
bFirst = false; [c{\el9H
read_nPos(); FL{Uz+Q
} /A{ Zf'DI
else x2!R&q8U>
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nStartPos = new long[bean.getNSplitter()]; U9oUY> 9
nEndPos = new long[bean.getNSplitter()];
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}
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public void run() P&0eu
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//获得文件长度 AE rPd)yk0
//分割文件 lDL&":t
//实例FileSplitterFetch `2Pa{g-.
//启动FileSplitterFetch线程 BqNsW
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//等待子线程返回 v@qP &4Sp
try{ vPDw22L;'
if(bFirst) Fi``l)Tt
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nFileLength = getFileSize(); &M13F>!
if(nFileLength == -1) V\`Z|'WIQD
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System.err.println("File Length is not known!"); vT?^#
} NY7yk3
else if(nFileLength == -2) ?i _ACKpw
{ sF{~7IB
System.err.println("File is not access!"); %,\JTN|g|A
} yd;e;Bb7*
else #RlZxtx.O
{ Q^b&
for(int i=0;i<nStartPos.length;i++) "D'e
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); hl1IG
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} E@GYl85fI
for(int i=0;i<nEndPos.length-1;i++) "# *W#ohVA
{ #8Bh5L!SJ1
nEndPos = nStartPos[i+1]; ?tLApy^`?
} uSfHlN4l
nEndPos[nEndPos.length-1] = nFileLength; !1l~UB_
} n3iiW\
} `*s:[k5k
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//启动子线程 u`'"=Y_E
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; W %*#rcdq
for(int i=0;i<nStartPos.length;i++) KW:N
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{ B%tF|KKj
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), $7q3[skH
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 4aHogheg
nStartPos,nEndPos,i); neFwxS?
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); oxxuw
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fileSplitterFetch.start(); bv4umL /
} ^L%_kL_7
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), t\,Y<9{w
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); n{gEIUo#
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", q%sZV>
nEndPos = " + nFileLength); lE k@I"
// fileSplitterFetch[nPos.length-1].start(); -PpcFLZ|
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//等待子线程结束 i.E2a)
//int count = 0; %axr@o[
//是否结束while循环 x_Ev2
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boolean breakWhile = false; Ja6 KO2}p
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while(!bStop) 2F2Hl
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write_nPos(); k!Yc_ZB:*l
Utility.sleep(500); cC-8.2
breakWhile = true; RRja{*R
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for(int i=0;i<nStartPos.length;i++) ]Q"T8drL
{ TsFhrtnx&X
if(!fileSplitterFetch.bDownOver) -lo?16w
{ 9"P+K.%
breakWhile = false; M+%Xq0`T
break; 6 - 3?&+
} d]0:r]e
} w;,34qbf
if(breakWhile) T?RY~GA
break; m}l);P^
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//count++; {4S UGo>
//if(count>4) ~uhW~bT
// siteStop(); k{2Gq1S{
} 33~MP;
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System.err.println("文件下载结束!"); _}5vO$kdO
} =f~<*wQ
catch(Exception e){e.printStackTrace ();} I~6)
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} CQ2vFg3+o
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//获得文件长度 x'L=p01
public long getFileSize() 5len}){
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int nFileLength = -1; *tv&