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**SiteFileFetch.java :v48y.Ij7s
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package NetFox; t?Znil|o
import java.io.*; ymqhI\>y#
import java.net.*; s#sXr
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public class SiteFileFetch extends Thread { IHfqW?
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SiteInfoBean siteInfoBean = null; //文件信息Bean nV1,
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long[] nStartPos; //开始位置 T[J_/DE@
long[] nEndPos; //结束位置 yK;I<8+>_
FileSplitterFetch[] fileSplitterFetch; //子线程对象 **[p{R]8o
long nFileLength; //文件长度 $S/ 8T
boolean bFirst = true; //是否第一次取文件 =="SW"vNi
boolean bStop = false; //停止标志 uEY5&wX`
File tmpFile; //文件下载的临时信息 ,;}RIcvQV
DataOutputStream output; //输出到文件的输出流 "b;?2_w:E
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) `WL*Jb
public SiteFileFetch(SiteInfoBean bean) throws IOException a WC
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siteInfoBean = bean; lnUy?0(
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); =n&83MYX
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); P'';F}NwfX
if(tmpFile.exists ()) V00zk`PH
{ 4|UIyDt8
bFirst = false; Pr"ESd>Y
read_nPos(); (C|%@6 1S
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else v%w]Q B
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nStartPos = new long[bean.getNSplitter()]; .l!Z=n|
nEndPos = new long[bean.getNSplitter()]; ^
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public void run() uq_SF.a'v
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//获得文件长度 u-$AFSt
//分割文件 +iR;D$w
//实例FileSplitterFetch aJts
//启动FileSplitterFetch线程 >#Yq&@G
//等待子线程返回 Bf.RYLsh6
try{ xYq8\9Qb
if(bFirst) :A[/;|&
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nFileLength = getFileSize(); im`^_zebj
if(nFileLength == -1) ){Y2TWW&0
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System.err.println("File Length is not known!"); Y;WrfO$J
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else if(nFileLength == -2) !~#31kL&
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System.err.println("File is not access!"); [S%
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else n >^?BU
{ S_atEmQ
for(int i=0;i<nStartPos.length;i++) ZL
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); U7N<!6
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for(int i=0;i<nEndPos.length-1;i++) c}lgWu~
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nEndPos = nStartPos[i+1]; s?G@k} {
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nEndPos[nEndPos.length-1] = nFileLength; ~Hq
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//启动子线程 b({2|R
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; f55Ev<oOa
for(int i=0;i<nStartPos.length;i++) oj/tim
{ JmK+#o
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), *e R$
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 5"sF#Y&
nStartPos,nEndPos,i); P%.5xYn
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos);
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fileSplitterFetch.start(); Mo/xEB/O
} !(]|!F[m
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), W^x[maz
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ]Vubz54
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", CNwhH)*
nEndPos = " + nFileLength); C'Ymz`iQ
// fileSplitterFetch[nPos.length-1].start(); 0Ec -/
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//等待子线程结束 k$hWR;U
//int count = 0; I%ez_VG
//是否结束while循环 3|A"CU/z@
boolean breakWhile = false; UY==1\
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while(!bStop) SSzOz-&GA
{ BH}u\K
write_nPos(); A4#m&o