/* @RFJe$%
**SiteFileFetch.java 3pI)
*/ geEETb}+y
package NetFox; 95hdQ<W
import java.io.*; 5!}fd/}Uk
import java.net.*; x$/:%"E
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public class SiteFileFetch extends Thread { d}(b!q9
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SiteInfoBean siteInfoBean = null; //文件信息Bean R:t
long[] nStartPos; //开始位置 H"J>wIuGX
long[] nEndPos; //结束位置 'v'=t<wgl
FileSplitterFetch[] fileSplitterFetch; //子线程对象 -<M'h
long nFileLength; //文件长度 9Ts r g
boolean bFirst = true; //是否第一次取文件 Q'K[?W|C
boolean bStop = false; //停止标志 } {<L<
File tmpFile; //文件下载的临时信息 #i0f}&
DataOutputStream output; //输出到文件的输出流 >`u/#mrd
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) dn|OY.`|
public SiteFileFetch(SiteInfoBean bean) throws IOException %E`=c]!
{ w]=c^@t_
siteInfoBean = bean; hxx`f-#=
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); A<<Bm M.%
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); [-'LJG Wb<
if(tmpFile.exists ()) (GXFPEH8
{ +a!uS0fIJi
bFirst = false; Sx}61 ?
read_nPos(); R\,qL-Br
} t6a$ZN;
else E.+BqWZ!
{ h$rk]UM/Q
nStartPos = new long[bean.getNSplitter()]; zTS#o#`!\
nEndPos = new long[bean.getNSplitter()]; T~b6Zu6
} 4'BZ +A,p
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} /E<:=DD<
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public void run() i :Sih"=
{ 31=vUS
//获得文件长度 '(!U5j
//分割文件 C!s !j
//实例FileSplitterFetch ]d -U
//启动FileSplitterFetch线程 eL{6;.C
//等待子线程返回 N/i {j.=
try{ 4]mAV\1
if(bFirst) dPCn6
{ (H-}z`sy/@
nFileLength = getFileSize(); 4oA9|}<FR
if(nFileLength == -1) Lm"zW>v
{ \1mTKw)S
System.err.println("File Length is not known!"); Cso-WG,
} =Xh*w
else if(nFileLength == -2) {axMS yp;
{ e<1)KqG
System.err.println("File is not access!"); bA8RoC
} }Z3+z@L
else @'fWS^ ;&
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for(int i=0;i<nStartPos.length;i++) N@G~+GCxL
{ wwVg'V;
nStartPos = (long)(i*(nFileLength/nStartPos.length)); n>aH7
} Os"T,`F2s
for(int i=0;i<nEndPos.length-1;i++) D~LU3#n
{ ?fmW'vs
nEndPos = nStartPos[i+1]; 8xQjJ
} J'#R9NO<
nEndPos[nEndPos.length-1] = nFileLength; mqk tM6
} 6;{E-y
} 3~6,fTMz{
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//启动子线程 v!77dj 6I
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; hR(p{$-T
for(int i=0;i<nStartPos.length;i++) sTChbks
{ :1,xs e
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 1y}tPkOe7O
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 7zEpuw
nStartPos,nEndPos,i); 6V^KOG
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); WSV[)-=:
fileSplitterFetch.start(); I^itlQ
} WuUT>omH
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), fOkB|E]
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); )3A%Un#B
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", /o]j
nEndPos = " + nFileLength); |VE*_ G
// fileSplitterFetch[nPos.length-1].start();
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//等待子线程结束 V^ 5Z9!
//int count = 0; EGIwqci:
//是否结束while循环 XX|wle1Kg
boolean breakWhile = false; tj;<EaM
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while(!bStop) o dTg.m
{ vB;$AFh{
write_nPos(); Cv;\cI"&
Utility.sleep(500); 8j<+ '
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breakWhile = true; k:k!4
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for(int i=0;i<nStartPos.length;i++) g"o),$tm
{ OJ2I (8P
if(!fileSplitterFetch.bDownOver) RRBBz7:~
{ **L3T3$)
breakWhile = false; 8w]>SEGFs
break; r(ufyC&
} O| zLD
} aq<QKnU
if(breakWhile) v'W`\MKY)
break; W99Hq1W;r
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//count++; HG)c\b
//if(count>4) # 5C)k5
// siteStop(); Qpaan
} 8`S6BkfC|
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System.err.println("文件下载结束!"); JD1D(
}
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catch(Exception e){e.printStackTrace ();} 4hh=z>$|l)
} RS`~i8e'
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//获得文件长度 8NS1* \z
public long getFileSize() ^S'tMT_
{ u]%>=N(^2
int nFileLength = -1; t4E=
try{ h]z>H~.<*
URL url = new URL(siteInfoBean.getSSiteURL()); <dA1n:3o
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); U&<Nhh
httpConnection.setRequestProperty("User-Agent","NetFox"); ZD'fEqM
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int responseCode=httpConnection.getResponseCode(); "p{cz(
if(responseCode>=400) =P.m5e<
{ umo@JWr
processErrorCode(responseCode); wWNHZv&
return -2; //-2 represent access is error 6W abw:
} @xI:ZtM
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String sHeader; $SmmrM
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for(int i=1;;i++) HX3R@^vo
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); '~ {x n
//Utility.log(in.readLine()); ]O\Oj6C
sHeader=httpConnection.getHeaderFieldKey(i); 4mY(* 2:HC
if(sHeader!=null) -OS&(7
{ 9(/ ;Wutj"
if(sHeader.equals("Content-Length")) S^Z[w|1
{ oe:@7stG
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 9O+><x[i
break; R""P01IZH
} ?(^HjRUY
} fiq4|!^h
else !Bv"S0
break; v3i]z9`
} p(F}[bP
} wf<=rW'
catch(IOException e){e.printStackTrace ();} Z/wKUK;
catch(Exception e){e.printStackTrace ();} K;u<-?En
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Utility.log(nFileLength); &O