/* STO6cNi
**SiteFileFetch.java w!61k \
*/ %.]qkGZe#
package NetFox; ~GZ(Ou-&
import java.io.*; y8\44WKW
import java.net.*; 5WEF^1
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public class SiteFileFetch extends Thread { Hg<]5
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SiteInfoBean siteInfoBean = null; //文件信息Bean }psJ'aiG*
long[] nStartPos; //开始位置 ^hU7QxW
long[] nEndPos; //结束位置 RK|C* TCnl
FileSplitterFetch[] fileSplitterFetch; //子线程对象 gVO[R6C5C
long nFileLength; //文件长度 F;kNc:X`)
boolean bFirst = true; //是否第一次取文件 !iMsTH<
boolean bStop = false; //停止标志 5@?P 8
File tmpFile; //文件下载的临时信息 %|UCs8EFm
DataOutputStream output; //输出到文件的输出流 leiP/D6s
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) `w2hJP
public SiteFileFetch(SiteInfoBean bean) throws IOException 90;[5c
{ }.x?$C+\"
siteInfoBean = bean; p9 %7h.
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ='a$>JVJ5
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); XSXS;Fh)
if(tmpFile.exists ()) ENygD
{ 66v6do7
bFirst = false; (Ori].{C.J
read_nPos(); kA fkQy(~
} IG
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else q45Hmz
{ "+p_{J/P
nStartPos = new long[bean.getNSplitter()]; b3W@{je
nEndPos = new long[bean.getNSplitter()]; 0m!+gZ@
} ;8H
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public void run() tQF,E&Jo8
{ }PD?x4
//获得文件长度 8e x{N3
//分割文件 Hr:WE+'
//实例FileSplitterFetch 3V2"1Ic
//启动FileSplitterFetch线程
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//等待子线程返回 VD,g
try{ n)gzHch
if(bFirst) ) m[0,
{ -b8Vz}Y
nFileLength = getFileSize(); ckS.j)@.c
if(nFileLength == -1) -m3O\X
{ V^[o{'+
System.err.println("File Length is not known!"); hIE$u t +
} 9ELLJ@oNC
else if(nFileLength == -2) 82{Lx7pI
{ Ru`&>E
System.err.println("File is not access!"); >:WnCkbp
} ycTX\.KV
else > X<pzD3u
{ rLtB^?A z
for(int i=0;i<nStartPos.length;i++) wknX\,`Q
{ S{&,I2aO
nStartPos = (long)(i*(nFileLength/nStartPos.length)); l~.ae,|7
} $C#G8Ck,
for(int i=0;i<nEndPos.length-1;i++) 8HDYA$L
{ r3*0`Rup
nEndPos = nStartPos[i+1]; A}W)La\
} q,(U 8
nEndPos[nEndPos.length-1] = nFileLength; A!\g!*
} gs7h`5[es
} Dyyf%'\M
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//启动子线程 n=qN@u;Fi#
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; g1UP/hNJ\8
for(int i=0;i<nStartPos.length;i++) c 2t<WRG
{ @9Rgg9r
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), F
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 0Z$=2c?xT
nStartPos,nEndPos,i); ..'k+0u^
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); d0vn/k2I
fileSplitterFetch.start(); ~PAF2
} 2dg+R)%
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), F%M4i`Vh
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); `f?v_Ui-$
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 0]p!
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nEndPos = " + nFileLength); p=sLKnLmZ
// fileSplitterFetch[nPos.length-1].start(); GgwO>[T
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//等待子线程结束 OeLM*Zi
//int count = 0; ,rc?,J1l
//是否结束while循环 Jr+~'
boolean breakWhile = false; >>22:JI`
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while(!bStop) B)>r~v]
{ : .Y
write_nPos(); [;~:',vHQf
Utility.sleep(500); 4LO4SYW7
breakWhile = true; HtY0=r
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for(int i=0;i<nStartPos.length;i++) ;r'y/Y'?
{ E0?R,+>&4
if(!fileSplitterFetch.bDownOver) B /q/6Pp
{ t+y$i@R:
breakWhile = false; e1ts/@V
break; trlZ ^K
} $v5)d J
} @/jLN
if(breakWhile) nIc:<w]
break; ?'SHt9b3|
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//count++; =ie8{j2:
//if(count>4) Lxz!>JO>
// siteStop();
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} K=lm9K
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System.err.println("文件下载结束!"); ^K[WFi N}
} vfBIQfH
catch(Exception e){e.printStackTrace ();} T .#cd1b
} *XN|ZGl/
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//获得文件长度 kHMD5Q
public long getFileSize() N!me:|Dn
{ Fs+
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int nFileLength = -1; pAK7V;sJ
try{ $U. >]i
URL url = new URL(siteInfoBean.getSSiteURL()); xAlyik
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); cl2+,!:
httpConnection.setRequestProperty("User-Agent","NetFox"); TgC8EcLr
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int responseCode=httpConnection.getResponseCode(); 0'm$hU}
if(responseCode>=400) 4H
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{ `wGP31Y.
processErrorCode(responseCode); ''.P=
return -2; //-2 represent access is error Q#gzk%jL@
} R k'5L
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String sHeader; VKGH+j[
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for(int i=1;;i++) X1wlOE
{ r [NI#wW
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Ku'OM6D<
//Utility.log(in.readLine()); Wb)>APL
sHeader=httpConnection.getHeaderFieldKey(i); /kZ{+4M
if(sHeader!=null) S<Rl?El<=
{ 'J[n}r
if(sHeader.equals("Content-Length")) rHSA5.[1P
{ ;7/
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); Wnf3[fV6P
break; xJcM1>cT>
} &Hl*Eg
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} yW@0Q:
else N*mm[F2+F
break; P
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} fC4#b?Q
} }^b7x;O|
catch(IOException e){e.printStackTrace ();} 5>S=f{ghFw
catch(Exception e){e.printStackTrace ();} ng0tNifZ;
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Utility.log(nFileLength); M'(4{4rC
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return nFileLength; 6cQ)*,Q
} 'ptD`)^(
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//保存下载信息(文件指针位置) r}>q*yx:
private void write_nPos() Tr\6AN?o
{ 3AQu\4+A
try{ a ](Jc)
output = new DataOutputStream(new FileOutputStream(tmpFile)); t%k1=Ow5i
output.writeInt(nStartPos.length); .,vF%pQ
for(int i=0;i<nStartPos.length;i++) M94zlW<
{ 3QZ~t#,7ij
// output.writeLong(nPos); #&$a7L}
output.writeLong(fileSplitterFetch.nStartPos); B8G9V6KS-
output.writeLong(fileSplitterFetch.nEndPos); \gU=B|W
} s3Wjg
output.close(); 2SABu796j
} s:p6oEQ=J
catch(IOException e){e.printStackTrace ();} @nNhW
catch(Exception e){e.printStackTrace ();} M9PzA'}4W6
} f+c<