/* 4$, W\d
**SiteFileFetch.java D^>d<LX
*/ Fs~*-R$
package NetFox; x>mI$K(6M
import java.io.*; wQhu U
import java.net.*; 8mmnnf{P
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public class SiteFileFetch extends Thread { UAz^P6iQ`~
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SiteInfoBean siteInfoBean = null; //文件信息Bean ?7)v:$(G}
long[] nStartPos; //开始位置 4~A$u^scn
long[] nEndPos; //结束位置 "oiN8#Hf
FileSplitterFetch[] fileSplitterFetch; //子线程对象 _vb'3~'S
long nFileLength; //文件长度 )c*xKij
boolean bFirst = true; //是否第一次取文件 qT$ IV\;_
boolean bStop = false; //停止标志 GK-P6d
File tmpFile; //文件下载的临时信息 hC8WRxEGq
DataOutputStream output; //输出到文件的输出流 Z'9 |
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) #%ld~dgz-
public SiteFileFetch(SiteInfoBean bean) throws IOException C7R3W,
{ K"t?
siteInfoBean = bean; NAtDt=
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 6wu`;>
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); >`&2]Wc)
if(tmpFile.exists ()) dZIbajs'
{ r?Mf3U^G
bFirst = false; :4)x
read_nPos(); ks phO-
} OA6i/3 #8
else t}I@Rmso
{ fsK=]~<g
nStartPos = new long[bean.getNSplitter()]; {5
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nEndPos = new long[bean.getNSplitter()]; @",#'eC"
} tA4Ra,-c
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} UkD\ma
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public void run() /N%i6t<xU
{ 3O4lGe#u
//获得文件长度 V;R gO}
//分割文件 ;p~!('{P
//实例FileSplitterFetch MYb^G\K
//启动FileSplitterFetch线程 T#!% Uzz
//等待子线程返回 U5-8It2OR
try{ "|J6*s
if(bFirst) 4yqYs>
{ "3]}V=L<5
nFileLength = getFileSize(); \ ;]{`
if(nFileLength == -1) e(^I.`9z
{ MC,Qv9m
System.err.println("File Length is not known!"); oDD"h,Z
} !hfpa_5
else if(nFileLength == -2) EUI*:JU-
{ :+>7m
System.err.println("File is not access!"); ;*zLf 9i
} 5*A5Y E-
else Q3=5q w^
{ y2?9pVLa\y
for(int i=0;i<nStartPos.length;i++) PHT<]:"`<
{ 'l!\2Wv2
nStartPos = (long)(i*(nFileLength/nStartPos.length)); l,Y5VGiH#
} Oprfp^L
for(int i=0;i<nEndPos.length-1;i++) *szs"mQ/
{ I:oEt
nEndPos = nStartPos[i+1]; Ebj0 {ZL
} w[l#0ZZ
nEndPos[nEndPos.length-1] = nFileLength; d>I)_05t
} #E=8kbD7
} V D7^wd9
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//启动子线程 t 3N}):
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; t@#5
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for(int i=0;i<nStartPos.length;i++) (i(E~^O
{ EI?8/c
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), vvY?8/
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ,KM%/;1Dm
nStartPos,nEndPos,i); ` W);+s
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); OMmfTlM%
fileSplitterFetch.start(); /@
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} eJ<P
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 6rmx{Bt
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); z<!A;.iD
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", " v
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nEndPos = " + nFileLength); $ eL-fg
// fileSplitterFetch[nPos.length-1].start(); 1TA!9cz0Z
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//等待子线程结束 r9bAbE
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//int count = 0; C_ d|2C6
//是否结束while循环 aw lq/
boolean breakWhile = false; (>u1O V
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while(!bStop) C^'r>0
{ "WGKwi=W
write_nPos(); la)+"uW
Utility.sleep(500); dn])6Xl;i
breakWhile = true; [3S17tTc3
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for(int i=0;i<nStartPos.length;i++) 5M'cOJ
{ [bo"!Qk%
if(!fileSplitterFetch.bDownOver) iKu3'jZ/O
{ cy
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breakWhile = false; .Xf_U.h$*@
break; "8zMe L
} *UW 8|\;
} BH^*K/^
if(breakWhile) #k>n5cR@0
break; 0)h.[O8@>
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//count++; ?Q=(?yR0]
//if(count>4) /{8Y,pZbu
// siteStop(); @##}zku
} H*0g*(
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System.err.println("文件下载结束!"); 3K~^H1l
} D1>*ml
catch(Exception e){e.printStackTrace ();} @|ZUyat
} 7u^wO<
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//获得文件长度 $X.F=Kv
public long getFileSize() ?XyrG1('
{ %j1 7QD8
int nFileLength = -1; |SMigSu r`
try{ !U(S?:hvW
URL url = new URL(siteInfoBean.getSSiteURL()); h V`?,
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); r/NaoIrJV
httpConnection.setRequestProperty("User-Agent","NetFox"); *1b0IQ$g
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int responseCode=httpConnection.getResponseCode(); Q2)5A&U\
if(responseCode>=400) XZ$g~r
{ 6OC4?#96%'
processErrorCode(responseCode); sP@XV/`3L6
return -2; //-2 represent access is error mGP%"R2X
} }mZCQJ#`
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String sHeader; MMaS
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for(int i=1;;i++) RmKbnS$*q
{ Z9% u,Cb
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Pk5\v0vkg
//Utility.log(in.readLine()); :Zq?V`+M
sHeader=httpConnection.getHeaderFieldKey(i); JDnWBE V
if(sHeader!=null) L!/{Z
{ 9,Dw;|A]
if(sHeader.equals("Content-Length")) 0VR,I{<.{
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 32J/
break; Fgwe`[
} 9_&]7ABV
} \KpJIHkBRy
else 4TU\SP8sM
break; vft7-|8T
} &];W#9"Z
} [!KsAsmk
catch(IOException e){e.printStackTrace ();} *}(B"FSO
catch(Exception e){e.printStackTrace ();} r_'];
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Utility.log(nFileLength); T DPQ+Kg_
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return nFileLength; k-s|gC4
} cqZlpm$c
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//保存下载信息(文件指针位置) *$('ous8
private void write_nPos() yswf2F
{ V*%><r
try{ <7ag=IgDy
output = new DataOutputStream(new FileOutputStream(tmpFile)); NgxJz
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output.writeInt(nStartPos.length); )
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for(int i=0;i<nStartPos.length;i++) HPO:aGU
{ tg/!=g
// output.writeLong(nPos); 4 l+z
output.writeLong(fileSplitterFetch.nStartPos); Lq@uwiq!
output.writeLong(fileSplitterFetch.nEndPos); ]wbV1Y"
} 3<a|_(K
output.close(); nM8'="$
} 6(A"5B=\
catch(IOException e){e.printStackTrace ();} m5?t<H~
catch(Exception e){e.printStackTrace ();} pwVGe|h%,
} J<cY'?D
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//读取保存的下载信息(文件指针位置) kOel
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private void read_nPos() YB{'L +Wbw
{ \Q?#^<