/* S$!)Uc\)A
**SiteFileFetch.java 2d,q?VH$
*/ O\64)V
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package NetFox; YQzs0t ,
import java.io.*; D&0@k'
import java.net.*; Y7{9C*>
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public class SiteFileFetch extends Thread { +H[GD!
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SiteInfoBean siteInfoBean = null; //文件信息Bean oC]|ARgQk|
long[] nStartPos; //开始位置 GW_@hYIqD
long[] nEndPos; //结束位置 :V>M{vd
FileSplitterFetch[] fileSplitterFetch; //子线程对象 P"`OuN
long nFileLength; //文件长度 ]j.??'+rg
boolean bFirst = true; //是否第一次取文件 \0'7p-T6
boolean bStop = false; //停止标志 zV(F9}^
File tmpFile; //文件下载的临时信息 /dU-$}>ZI
DataOutputStream output; //输出到文件的输出流 69U[kW&
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 5B[kZ?>
public SiteFileFetch(SiteInfoBean bean) throws IOException a'f0Wv0%"
{ @za X\
siteInfoBean = bean; "o
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//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); r Bv
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); S!0ocS!t
if(tmpFile.exists ()) {wWh;
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bFirst = false; :I(-@2?{
read_nPos(); $V$|"KRcs
} Sm;EWz-?
else hadGF%> O6
{ lW! U:
nStartPos = new long[bean.getNSplitter()]; 3YyB0BMW
nEndPos = new long[bean.getNSplitter()]; "(uEcS2<
} &J~vXk:
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public void run() Y[=Gv6Fr
{ S/j~1q_|G
//获得文件长度 8U8l
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//分割文件 VXforI
//实例FileSplitterFetch 7xAzd#
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//启动FileSplitterFetch线程 zi~_[l-
//等待子线程返回 "Jw6.q+
try{ ;eznONNF
if(bFirst) Dp
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nFileLength = getFileSize(); 2| u 'J
if(nFileLength == -1) 9/OB!<*V|
{ krkRP%jy
System.err.println("File Length is not known!"); c?i=6CdD'
} KsM2?aqwf_
else if(nFileLength == -2) i7:R4G(/#
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System.err.println("File is not access!"); 41y}n{4n8
} k'uN2m
else 5_U3Fs
{ ,bRvj8"M
for(int i=0;i<nStartPos.length;i++) _5I" %E;S
{ }
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); |
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for(int i=0;i<nEndPos.length-1;i++) %C*oy$.
{ PJu)%al
nEndPos = nStartPos[i+1]; yZ t}Jnv
} "|{O%X
nEndPos[nEndPos.length-1] = nFileLength; pqPhtWi%PJ
} =T$-idx1l
} k36%n
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//启动子线程 B JDe1W3;'
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 9.R)iA
for(int i=0;i<nStartPos.length;i++) @; ayl
{ w=Xil
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), nA%H`/O{
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Q7O8']~n
nStartPos,nEndPos,i); ?C
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); GH2D5HVN
fileSplitterFetch.start(); SGn:f>N
} JF]HkH_u
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), L*tn>AO
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); mBgMu@zt)
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", }PGl8F !
nEndPos = " + nFileLength); D\8 ~3S'd
// fileSplitterFetch[nPos.length-1].start(); :(EU\yCzK
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//等待子线程结束 2ul!f7#E
//int count = 0; 7-81,ADv(
//是否结束while循环 HABMFv
boolean breakWhile = false; k WYjqv
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while(!bStop) C.dN)?O
{ =BpX;n<
write_nPos(); O.S(H1z<G
Utility.sleep(500); VJ P]Jy_
breakWhile = true; jJ-j
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for(int i=0;i<nStartPos.length;i++) RO,
{ az3rK4g
if(!fileSplitterFetch.bDownOver) \MM(w&
{ &G?b|Tb2
breakWhile = false; P
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break; :|xV}
} lqe;lWC0Z
} rJK3;d? E
if(breakWhile) 6&