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**SiteFileFetch.java Us M|OH5k
*/ +XJj:%yt
package NetFox; 06pLa3oi
import java.io.*; [L|H1ll
import java.net.*; -f z
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public class SiteFileFetch extends Thread { R(=Lhz6R4
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SiteInfoBean siteInfoBean = null; //文件信息Bean a
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long[] nStartPos; //开始位置 1s=M3m&H
long[] nEndPos; //结束位置 q0.+ F4
FileSplitterFetch[] fileSplitterFetch; //子线程对象 N/TUcG|m\
long nFileLength; //文件长度 '[~NRKQJ
boolean bFirst = true; //是否第一次取文件 3)zanoYHi
boolean bStop = false; //停止标志 0MF[e3)a
File tmpFile; //文件下载的临时信息 B+iVK(j'[v
DataOutputStream output; //输出到文件的输出流 Va\dMv-b
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) x$J1%K*
public SiteFileFetch(SiteInfoBean bean) throws IOException >,y291p2
{ :qc@S&v@]
siteInfoBean = bean; kUmrJBh$
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); S WVeUL#5
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); @T._
if(tmpFile.exists ()) Tw)nFr8oF]
{ n%"q>
bFirst = false; JaXT
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read_nPos(); ?5Wj y
} &&xBq?
else n&D<l '4
{ (#BkL:dg
nStartPos = new long[bean.getNSplitter()]; |[CsLn;
nEndPos = new long[bean.getNSplitter()]; :`2<SF^0O
} j5|_SQOmt
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} w0)V3
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public void run() +J}
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{ =dHM)OXD"
//获得文件长度 {^i7 3}@O
//分割文件 ^ ~:f02[D
//实例FileSplitterFetch (8TB*BhQ_
//启动FileSplitterFetch线程 F^7qLvh
//等待子线程返回 h$)(-_c3
try{ -$f~V\M
if(bFirst) }=z_3JfO
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nFileLength = getFileSize(); kQ7$,K#
if(nFileLength == -1) nT..+J)
{ u =z$**M^
System.err.println("File Length is not known!"); NZ djS9
} S_/9eI~X
else if(nFileLength == -2) OXe+=Lp<
{ "+/%s#&
System.err.println("File is not access!"); rL3<r
} OSQZ5:g|
else {a\O7$A\F
{ k__i Jsk
for(int i=0;i<nStartPos.length;i++) &PVos|G
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); Ig}G"GR
} PElC0qCn[
for(int i=0;i<nEndPos.length-1;i++) '9c`[^
{ lPx4=O
nEndPos = nStartPos[i+1]; 8]skAh
} ig<Eyr
nEndPos[nEndPos.length-1] = nFileLength; 8^\}\@
} Zt4g G KG
} eQu%TZ(x-$
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//启动子线程 I=o[\?u*_
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; "X0"=1R~
for(int i=0;i<nStartPos.length;i++) SF$7WG3Q
{ 4)0 %^\p
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), XI:8_F;Q
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Z:DEET!c'k
nStartPos,nEndPos,i); 4
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Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); =+5z;3
fileSplitterFetch.start(); ~\kJir
} (XA=d
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// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ,Tc3koi
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); A<P3X/i
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", %|E'cdvkX
nEndPos = " + nFileLength); 28FC@&'H
// fileSplitterFetch[nPos.length-1].start(); OzY55
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//等待子线程结束 Go~bQ2*'(/
//int count = 0; $*
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//是否结束while循环 )*#Pp )Q
boolean breakWhile = false; 2gz}]_
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while(!bStop) , dT.q
{ jJFWPD]u
write_nPos(); 8|^dM$
Utility.sleep(500); j_N><_Jc
breakWhile = true; \{r-e
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for(int i=0;i<nStartPos.length;i++) -c-af%xD
{ 4w,=6|#
if(!fileSplitterFetch.bDownOver) =B4,H=7Spf
{ W}m-5L
breakWhile = false; s2f95<B
break; Yhdt"@;..
} 79 zFF
} HT]W2^k
if(breakWhile) dmh6o *
break; A4LGF
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//count++; p@epl|IZp
//if(count>4) bwh7.lDAl
// siteStop(); QZy+`
} v|5:;,I
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System.err.println("文件下载结束!"); lfjY45=
} YnnpgR.
catch(Exception e){e.printStackTrace ();} fR_
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} k=w;jX&;`
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//获得文件长度 ~3}Gu^@
public long getFileSize() }~P%S(zB
{ %bI(
int nFileLength = -1; [NcS[*qp
try{ .DSn
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URL url = new URL(siteInfoBean.getSSiteURL()); qW]gp7jK4
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); <hi@$.u_Q^
httpConnection.setRequestProperty("User-Agent","NetFox"); =4GJYhj
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int responseCode=httpConnection.getResponseCode(); |\ Nj
if(responseCode>=400) [% chN/
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processErrorCode(responseCode); {Z[yY6Nu
return -2; //-2 represent access is error ZJ(/cD
} %bf+Y7m
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String sHeader; ~82[pY
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for(int i=1;;i++) A.7:.5Cx'
{ ={' "ATX(U
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); =jD[A>3I
//Utility.log(in.readLine()); ^q6H
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sHeader=httpConnection.getHeaderFieldKey(i); CG'NC\x5
if(sHeader!=null) MhC74G
{ Du3OmXMk
if(sHeader.equals("Content-Length")) `}o4 &$
{ }GvoQ#N
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); <'A>7M~h?*
break; }_XW?^/8
} GZT}aMMSJ
} !f_GR Pj'
else N_<sCRd]9
break; ,oe
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} a?' 3
} k*|dX.C:
catch(IOException e){e.printStackTrace ();} qG"|,bA
catch(Exception e){e.printStackTrace ();} hZnT`!iFE^
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Utility.log(nFileLength); FtN1ZZ"<*
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return nFileLength; S-Va_t$
} Qo
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//保存下载信息(文件指针位置) @RotJl/>
private void write_nPos() i=_leC)rl
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try{ Z_' %'&Y
output = new DataOutputStream(new FileOutputStream(tmpFile)); !mBsDn(J
output.writeInt(nStartPos.length); nzy =0Ox[
for(int i=0;i<nStartPos.length;i++) t )Z2"_5
{ x$CpUy{6
// output.writeLong(nPos); !boKrSw
output.writeLong(fileSplitterFetch.nStartPos); ..FUg"sSO
output.writeLong(fileSplitterFetch.nEndPos); F$r8hj`
} MSeO#X
output.close(); 7^sU/3z
}
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catch(IOException e){e.printStackTrace ();} yG&kP:k<
catch(Exception e){e.printStackTrace ();} =khjD[muC
} > 0 !J]gK
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//读取保存的下载信息(文件指针位置) +lJuF/sS8m
private void read_nPos() ZC"6B(d
{ %fP^Fh
try{ R
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DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); p8s2#+/
int nCount = input.readInt(); QZ{&7mc>
nStartPos = new long[nCount]; u-UUF
nEndPos = new long[nCount]; ! qrF=a
for(int i=0;i<nStartPos.length;i++) F/j=rs,*|D
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nStartPos = input.readLong(); 7P/j\frW
nEndPos = input.readLong();
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