/* b)N[[sOt
**SiteFileFetch.java *D2Nm9sl
*/ $30oc
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package NetFox; W7t
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import java.io.*; }*NF&PD5RU
import java.net.*; *P`v^&
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public class SiteFileFetch extends Thread { )T9;6R$b
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SiteInfoBean siteInfoBean = null; //文件信息Bean T'E]
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long[] nStartPos; //开始位置 +#4]o
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long[] nEndPos; //结束位置 2gt+l?O<PS
FileSplitterFetch[] fileSplitterFetch; //子线程对象 hR-K@fS%l'
long nFileLength; //文件长度 aR _NyA
boolean bFirst = true; //是否第一次取文件 zJ;Rt9<7-
boolean bStop = false; //停止标志 nTPB,QE<
File tmpFile; //文件下载的临时信息 FKC\VF
DataOutputStream output; //输出到文件的输出流 Pg`JQC|
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ;+sl7qlA4
public SiteFileFetch(SiteInfoBean bean) throws IOException xOythvO
{ t-WjL@$F/
siteInfoBean = bean; -OrR $w|e
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); o]<jZ_|gB
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); vYdR ht\(
if(tmpFile.exists ()) n0Go p^3
{ Jy]Id*u9
bFirst = false; 6JhMkB^h
read_nPos(); ygN>"eP
} pV7N byb4
else Ry&q1j
{ )>\4ULR83
nStartPos = new long[bean.getNSplitter()]; Oa!
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nEndPos = new long[bean.getNSplitter()]; |m)kN2w
} Y6A;AmM8
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} F?9SiX[\
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public void run() qy
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{ kx:jI^
//获得文件长度 ?R|th Z
//分割文件 /4*W DiH
//实例FileSplitterFetch #jBN?Z#
//启动FileSplitterFetch线程 :=*}htP4C
//等待子线程返回 KVN"XqE4
try{ [[WF0q
if(bFirst) X P;Bhz3j
{ Mu{BUtkzG
nFileLength = getFileSize(); w~|1Wd<v
if(nFileLength == -1) u`_*g^5q"
{ pISp*&
System.err.println("File Length is not known!"); M(enRs3`O
} L2fZ{bgy
else if(nFileLength == -2) )T1iN(Z
{ }^Gd4[(,g
System.err.println("File is not access!"); 8YX)0i'
} 3-C\2
else E=AVrv5T
{ jZd}OC<
for(int i=0;i<nStartPos.length;i++) 'N\&<dT>
{ E)W@{?.o#
nStartPos = (long)(i*(nFileLength/nStartPos.length)); NLyXBV[hV
} jAC78n,Fi@
for(int i=0;i<nEndPos.length-1;i++) d]SYP
{ (?>cn_m
nEndPos = nStartPos[i+1]; KxIyc7.
} M&KyA
nEndPos[nEndPos.length-1] = nFileLength; +Rwx%=
} -:<lkq&/
} [|RjHGf
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};b1aha G
//启动子线程 iidT~l
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; /7/0x ./{
for(int i=0;i<nStartPos.length;i++) FJ54S
{ 1$pb (OK
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), XN;&qR^j
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), gl8Ib<{
nStartPos,nEndPos,i); Q`ME@vz
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); S_b/DO
fileSplitterFetch.start(); Xj@+{uvQB
} ^A9M;q
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), p=Y>i 'CG
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ;b0NGa(k
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ;a
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nEndPos = " + nFileLength); Elb aFbr
// fileSplitterFetch[nPos.length-1].start(); ,DQjDMjrf
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//等待子线程结束 n lGHT
//int count = 0; ^U@~+dw
//是否结束while循环 iPj~I
boolean breakWhile = false; ^YlI>_3s
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while(!bStop) 0N;%2=2_E
{ Ak@Dyi?p
write_nPos(); 86
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Utility.sleep(500); UzG[:ic%
breakWhile = true; mJ5H=&Z
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for(int i=0;i<nStartPos.length;i++) ru9zTZZD
{ vScjq5"p
if(!fileSplitterFetch.bDownOver) .0p^W9
{ N|usFqCNk^
breakWhile = false; N( Oyi
break; M4yI`dr6
} vFv3'b$;G
} ]a'99^?\
if(breakWhile) zjl!9M!
break; W7sn+g\
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//count++; 4hs)b
//if(count>4) Fhf<T`
// siteStop(); EGVM)ur
} eWs&J24
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System.err.println("文件下载结束!"); 3Q^fVn$tk
} Na{Y}0=^y
catch(Exception e){e.printStackTrace ();} L2UsqVU
} >ut" OL9J
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//获得文件长度 L%"LlSg
public long getFileSize() C[sh,
{ 6gL-OJNo
int nFileLength = -1; iUi>y.}"P
try{ |{>ER,<-
URL url = new URL(siteInfoBean.getSSiteURL()); Z4b||
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); }<a^</s
httpConnection.setRequestProperty("User-Agent","NetFox"); Smw QET<H
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int responseCode=httpConnection.getResponseCode(); cVnJ^*Z
if(responseCode>=400) qet>1<
{ 8^/I>0EZ
processErrorCode(responseCode); X}ma]
return -2; //-2 represent access is error WJH\~<{mP
} )!:sFa
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String sHeader; &ANP`=
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for(int i=1;;i++) tBbOY}.VD
{ yw-8#y
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); >Gml4vGK
//Utility.log(in.readLine()); (V`Md\NL`
sHeader=httpConnection.getHeaderFieldKey(i); i%m"@7.kk
if(sHeader!=null) W,5Hx1z R
{ =@&cH Y
if(sHeader.equals("Content-Length")) s$ENFp7P
{ AlE8Xu9UB
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); \_V-A f{6
break; <EO$]>;0
} dO> VwP
} q[q?hQ/b
else B%CTOi
break; }je,")#W
} S-Y=-"
} ~}EMk 3
catch(IOException e){e.printStackTrace ();} \wcam`f
catch(Exception e){e.printStackTrace ();} {%lXY Myu
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Utility.log(nFileLength); >@xrs
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return nFileLength; l/TjQ*
} Z;Ez"t&U
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//保存下载信息(文件指针位置) c#-U%qZ
private void write_nPos() M>9-=$7
{ tz4
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try{ gI^oU4mq
output = new DataOutputStream(new FileOutputStream(tmpFile)); BS Iy+
output.writeInt(nStartPos.length); N'r3`8tS
for(int i=0;i<nStartPos.length;i++) F:@70(<w%
{ y&}E~5O
// output.writeLong(nPos); *4+3ObA
output.writeLong(fileSplitterFetch.nStartPos); x3jb%`o#!
output.writeLong(fileSplitterFetch.nEndPos); %VYAd)gC
} [[PEa-992
output.close(); poGc a1
} IG)s^bP
catch(IOException e){e.printStackTrace ();} ;c~cet4
catch(Exception e){e.printStackTrace ();} zJP6F.Ov!
} k.("3R6v:
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//读取保存的下载信息(文件指针位置) 5;0g!&-t#
private void read_nPos() f Vb-$
{ eSWLrryY
try{ /| #&px)G
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); w0w G-R ?
int nCount = input.readInt(); G'3qzBJ#
nStartPos = new long[nCount]; FZ!`B]]le,
nEndPos = new long[nCount]; H
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for(int i=0;i<nStartPos.length;i++) \fA{1
{ bM8If"
nStartPos = input.readLong(); mPI8_5V8]
nEndPos = input.readLong(); =mA: ctu~v
} }ci#>
input.close(); IDnC<