/* :vX%0|
**SiteFileFetch.java Gw\..O
*/ A*wf:
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package NetFox; &^#u=w?^x
import java.io.*; RgA"`p7{
import java.net.*; CGzu(@dd\
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public class SiteFileFetch extends Thread { KN[;z2i
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SiteInfoBean siteInfoBean = null; //文件信息Bean 8I *N
long[] nStartPos; //开始位置 * m^\&
long[] nEndPos; //结束位置 vy*-"=J
FileSplitterFetch[] fileSplitterFetch; //子线程对象 D%nd7
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long nFileLength; //文件长度 gFKJbjT|
boolean bFirst = true; //是否第一次取文件 M:{Aq&.
boolean bStop = false; //停止标志 S,nELV~!
File tmpFile; //文件下载的临时信息 )-emSV0zE
DataOutputStream output; //输出到文件的输出流 ]/H6%"CTa
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ($kw*H{Ah^
public SiteFileFetch(SiteInfoBean bean) throws IOException \0d'y#Gp*
{ ,aLwOmO
siteInfoBean = bean; )0iN2L]U;
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); .1jiANY
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); "GQ Q8rQ
if(tmpFile.exists ()) _1&Ar4:
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bFirst = false; y:}qoT_.
read_nPos(); TKv!wKI
} a!E22k?((z
else N{S) b
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nStartPos = new long[bean.getNSplitter()]; n\l?+)S *
nEndPos = new long[bean.getNSplitter()]; &v0-$
} nAEyL+6U
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public void run() SXZ9+<\
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//获得文件长度 )/%5f{+}
//分割文件 twq~.:<o
//实例FileSplitterFetch jh)@3c
//启动FileSplitterFetch线程 (+epRC
//等待子线程返回 7!pKlmQ
try{ ZQ_6I}i")
if(bFirst) $VvgzjrH
{ &]#L'D!"
nFileLength = getFileSize(); $vf gYl4q
if(nFileLength == -1) R-S<7Q3E0=
{ #%\0][Xf
System.err.println("File Length is not known!"); {9U!0h-2"
} fk5'v
else if(nFileLength == -2) [jzsB:;XB&
{ O*~z@"\
System.err.println("File is not access!"); ;na%*G`
} WC`h+SC`.
else z{
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for(int i=0;i<nStartPos.length;i++) #BUq;5
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); gCb+hQq\
} 2URGd#{VQ
for(int i=0;i<nEndPos.length-1;i++) &Mk!qE<:N
{ ]=qauf>3
nEndPos = nStartPos[i+1]; oCaYmi=:
} &sWr)>vs
nEndPos[nEndPos.length-1] = nFileLength; + U5Q/g
} wW@e#:
} )N&SrzqTK
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//启动子线程 $u!(F]^
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 1+;bd'Ie
for(int i=0;i<nStartPos.length;i++) }}=n]_f
{ E]OexRJ^i
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), /'rj L<M
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), p2Ep(0w,R5
nStartPos,nEndPos,i); qY#*LqV
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); UhDQl%&He
fileSplitterFetch.start(); ]- 1(r,
} Xb%q9Z
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), WMf /
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); (@+pz/
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", t<p#u=jOa
nEndPos = " + nFileLength); z3tx]Ade
// fileSplitterFetch[nPos.length-1].start(); 6(bN*.
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//等待子线程结束 5wx_ol}2
//int count = 0; JY#vq'dl|
//是否结束while循环 X3:z=X&Zd
boolean breakWhile = false; _-_iw&F
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while(!bStop) [<RhaZz
{ x|~8?i$%
write_nPos(); /grTOf&
Utility.sleep(500); $vegU]-R
breakWhile = true; sN[}B{+
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for(int i=0;i<nStartPos.length;i++) F?Lt-a+
{ c| ^I}
if(!fileSplitterFetch.bDownOver) SsZC g#i
{ ?Ij(B}D
breakWhile = false; lFBpNUnzU
break; 2 ?t@<M]
} ttsR`R1.k
} lvke!~#
if(breakWhile) V!He2<
break; 2LtDS?)@
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//count++; eJ?oz^
//if(count>4) PXMd=,}
// siteStop(); w.?4}'DK
} vhfjZ
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System.err.println("文件下载结束!"); %GhI0F #
} 1Toiqb/
catch(Exception e){e.printStackTrace ();} P8z%*/
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} ,eyh%k*hz
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//获得文件长度 Ou_H&R
public long getFileSize() q5(t2nNb
{ M&V'*.xz
int nFileLength = -1; xS,24{-HJ
try{ 'Lrn<
URL url = new URL(siteInfoBean.getSSiteURL()); 6m:$mhA5
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); %10ONe}
httpConnection.setRequestProperty("User-Agent","NetFox"); b)d;eS
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int responseCode=httpConnection.getResponseCode(); zZ=SAjT QP
if(responseCode>=400) :<J7 g`f
{ ^9Pr`\
processErrorCode(responseCode); :V'99Esv`
return -2; //-2 represent access is error "v1{
} 5kiW@{m
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String sHeader; =tOB fRM
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for(int i=1;;i++) B0@
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); a^%iAe
//Utility.log(in.readLine()); pm6#azQ
sHeader=httpConnection.getHeaderFieldKey(i); p) 8S]p]
if(sHeader!=null) s;VW
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{ r2=@1=?8
if(sHeader.equals("Content-Length")) )5}<@Ql
{ V`I4"}M1
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 7}kJp%-
break; ! ?g+'OM
} VQ9A/DH/
} FzInIif
else *fg2bz<~[B
break; 28!C#.(h
} AP&//b,^M
} CP7dn/
catch(IOException e){e.printStackTrace ();} C"I
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catch(Exception e){e.printStackTrace ();} b@Oq}^a&o
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Utility.log(nFileLength); Scrj%h%[
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return nFileLength; ? o"
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} W"NI^OX
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//保存下载信息(文件指针位置) jWrU'X
private void write_nPos() X)b$CG
{ P[3i!"O>
try{ = ~1EpZ
output = new DataOutputStream(new FileOutputStream(tmpFile)); eAy,T<#
output.writeInt(nStartPos.length); c{M
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for(int i=0;i<nStartPos.length;i++) >#]A2,
{ bU=Utniq
// output.writeLong(nPos); !d72f8@9
output.writeLong(fileSplitterFetch.nStartPos);
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output.writeLong(fileSplitterFetch.nEndPos); =QqH`.3
} kXz~ez 7
output.close(); z<%P"
} Nr4}x7
catch(IOException e){e.printStackTrace ();} #V>R#Oh}
catch(Exception e){e.printStackTrace ();} P 9?cp{*
} y[_k/.1
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//读取保存的下载信息(文件指针位置) *vb"mB
private void read_nPos() CRb*sfKDL
{ mnpk9x}m
try{ X-["{
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); $bTtD<