/* Z%h _g-C
**SiteFileFetch.java B=EI&+F+
*/ M
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package NetFox; IJWUNKqo=
import java.io.*; uL\b*rI
import java.net.*; jkTh)Bm|'
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public class SiteFileFetch extends Thread { y.xt7
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SiteInfoBean siteInfoBean = null; //文件信息Bean O9+Dd%_KS#
long[] nStartPos; //开始位置 h8nJt>h
long[] nEndPos; //结束位置 *wH.]$
FileSplitterFetch[] fileSplitterFetch; //子线程对象 A*1-2
long nFileLength; //文件长度 /G{;?R
boolean bFirst = true; //是否第一次取文件 #hp7@ Tu
boolean bStop = false; //停止标志 'H19@b5rx
File tmpFile; //文件下载的临时信息 K;:_UJ>t
DataOutputStream output; //输出到文件的输出流 uX.^zg]}%
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) +ESEAi91
public SiteFileFetch(SiteInfoBean bean) throws IOException iy<|<*s2D
{ nC:>1kt
siteInfoBean = bean; aw%iO|M_
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Q9i&]V[`
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); qocN:Of1
if(tmpFile.exists ()) E{Kc$,y
{ $nkvp`A
bFirst = false; _H,xnh#nZ
read_nPos(); cO8':P5Q
} :.k1="H~@
else & bKl(,
{ $;4y2?E
nStartPos = new long[bean.getNSplitter()]; \
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nEndPos = new long[bean.getNSplitter()]; e_<'zH_1
} (6y[,lYH
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} P{bRRn4Z
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public void run() KQf=t0Z=Ce
{ H%nA"-
//获得文件长度 D]?eRO9'
//分割文件 f3>L/9[[<P
//实例FileSplitterFetch Kl'u
//启动FileSplitterFetch线程 65HP9`5Tm
//等待子线程返回 Z!/!4(Fh
try{ yb-1zF|
if(bFirst) 7R4t%^F
{ <:n!qQS6
nFileLength = getFileSize(); ]+"25V'L
if(nFileLength == -1) X7bS{GT
{ !J6;F}Pd/
System.err.println("File Length is not known!"); '%H\k5^
} [%uj+?}6O
else if(nFileLength == -2) ,+d\@ :
{ Nf]h8d~
System.err.println("File is not access!"); [$Dzf<0
} /e:kBjysJ
else V
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{ (u{?aG~
for(int i=0;i<nStartPos.length;i++) h7P<3m}
{ n@JZ 2K4
nStartPos = (long)(i*(nFileLength/nStartPos.length)); '^{:HR#i
} +55+%oGl
for(int i=0;i<nEndPos.length-1;i++) f@j )t%mh
{ _.{I1*6Y2
nEndPos = nStartPos[i+1]; qk{+Y
} @W1F4HYds
nEndPos[nEndPos.length-1] = nFileLength; 2Y7u M;8
} n9 %&HDl4
} b2tUJ2p
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//启动子线程 R PB%6z$
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; {f(RY j
for(int i=0;i<nStartPos.length;i++) R<)^--n
{ 7'g{:dzS*3
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), :~{Nf-y0`1
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Q,m&XpZ
nStartPos,nEndPos,i); J#*%r)
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); <2V:tj)?P
fileSplitterFetch.start(); MQY}}a-oug
} P3k@ptc-K
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ng{"W|
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); u)4eu,MBT
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", .N>Th/K8
nEndPos = " + nFileLength); vTl7x
// fileSplitterFetch[nPos.length-1].start(); r$cq2pkX
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//等待子线程结束 @2;/-,4O
//int count = 0;
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//是否结束while循环 z[sP/{~z
boolean breakWhile = false; k
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while(!bStop) R_zQiSwG<
{ h]jy):9L
write_nPos(); q2e=(]rKE{
Utility.sleep(500); ZnAXb S
breakWhile = true; $X_A74(
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for(int i=0;i<nStartPos.length;i++) NVX @1}
{ 'JRYf;9c
if(!fileSplitterFetch.bDownOver) T^DJ/uhd
{ m#,AD,s
breakWhile = false; \|YIuzlO4
break; u Wxl\+_i
} =v{Vl5&>?
} ;i,3KJ[L
if(breakWhile) O%)Wo?)HM
break; '/'dg5bfV
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//count++; 2r"J"C
//if(count>4) l2ARM3"
// siteStop(); +pY--5t
} "j/jhe6
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System.err.println("文件下载结束!"); $1uT`>%
} l{mC|8X
catch(Exception e){e.printStackTrace ();}
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} 6qd?&.=r
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//获得文件长度 Q;?rqi
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public long getFileSize() >/+R~ n
{ gVI{eoJ
int nFileLength = -1; 7V2xg h!W
try{ jdX*
URL url = new URL(siteInfoBean.getSSiteURL()); LaX<2]Tx:
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); )m$MC25
httpConnection.setRequestProperty("User-Agent","NetFox"); \A 5Na-/9
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int responseCode=httpConnection.getResponseCode(); Z 5 Xis"j
if(responseCode>=400) =`ECM7
{ 2&zklXuo:
processErrorCode(responseCode); V~sfR^FQ'
return -2; //-2 represent access is error UuCRQN H
} :E.T2na
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String sHeader; dC>(UDC
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for(int i=1;;i++) J^-a@'`+
{ 4hx4/5[^
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); DJb9] ,=a
//Utility.log(in.readLine()); # TZ`
sHeader=httpConnection.getHeaderFieldKey(i); o]DYS,v
if(sHeader!=null) L:\>)6]Ls
{ CrB4%W:{
if(sHeader.equals("Content-Length")) g&rz*)|/
{ NwN3T]W
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader));
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break; SQJ+C%
} Mq='|0,
} (SMk!b]}
else Xc$Zkfmms
break; e F)my
} PlR$s
} e5d STc`
catch(IOException e){e.printStackTrace ();} ,uPN\`.u8
catch(Exception e){e.printStackTrace ();} >P ~j@Lv
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Utility.log(nFileLength); I)MRAo
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return nFileLength; 3e9UD N2
} ]app 9
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//保存下载信息(文件指针位置) $Lz!04
private void write_nPos() (9{qT>eJg=
{ &