/* J[rpMQ
**SiteFileFetch.java GU'/-6-T
*/ lz.ta!6
package NetFox; MXsSF|-
import java.io.*; N;ed_!
import java.net.*; tW;1
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public class SiteFileFetch extends Thread { ;^nN!KDjR
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SiteInfoBean siteInfoBean = null; //文件信息Bean ~G.'pyW
long[] nStartPos; //开始位置 ohqi4Y!j/~
long[] nEndPos; //结束位置 '`Eb].s*
FileSplitterFetch[] fileSplitterFetch; //子线程对象 _NQMi4 V(
long nFileLength; //文件长度 E}K6Op;=v5
boolean bFirst = true; //是否第一次取文件 >[;+QVr;
boolean bStop = false; //停止标志 @l:\0cO
File tmpFile; //文件下载的临时信息
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DataOutputStream output; //输出到文件的输出流 LYb@0O<w
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 45e-A{G~
public SiteFileFetch(SiteInfoBean bean) throws IOException n}(/>?/
{ (055>D6
siteInfoBean = bean; L=4%MyZ.e
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Zq7Y('=`t@
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); };"-6e/9
if(tmpFile.exists ()) -J8&!S8 X
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bFirst = false; pEf1[ zq
read_nPos(); v<
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} - Te+{
else SoX\S|}%6[
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nStartPos = new long[bean.getNSplitter()]; F]kn4zr
nEndPos = new long[bean.getNSplitter()]; z97RNT|Y7U
} `R@1Sc<*|
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} gE$D#PZa
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public void run() Fd!Np7xw
{ D4nYyj1O3
//获得文件长度 8,unq3
//分割文件 JB.f7-
//实例FileSplitterFetch M?m Pi 3
//启动FileSplitterFetch线程 .YYfba#{
//等待子线程返回 ,@1rP 55
try{ ZoJ_I
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if(bFirst) [?z`XY_-
{ ~JhH ,E
nFileLength = getFileSize(); T%|{Qo<j
if(nFileLength == -1) IiW*'0H:/
{ ~n9x
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System.err.println("File Length is not known!"); Aw#@}TGT
} y&;ytNG&<
else if(nFileLength == -2) _Q)rI%A2
{ /dGpac
System.err.println("File is not access!"); QP HibPP:
} LbCcOkL/@@
else aX
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for(int i=0;i<nStartPos.length;i++) ?wM{NVt#-
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); G)~/$EF,_
} a`/\0~
for(int i=0;i<nEndPos.length-1;i++) >Pa&f20Hp
{ IZ?+c@t
nEndPos = nStartPos[i+1]; j{ QzD^t
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nEndPos[nEndPos.length-1] = nFileLength; {vCB$@/o
} ;1x(~pD*o
} 'Lm\ r+$F
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//启动子线程 D@.+B`bA
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ;W"=s79
for(int i=0;i<nStartPos.length;i++) z)AZ:^!O
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 4WspPHj
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 1nGpW$Gx
nStartPos,nEndPos,i); 2h=QJgpCG
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Z'hHXSXM
fileSplitterFetch.start(); !q]@/<=
} {,;R\)8D
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 2Kg-ZDK8
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); p;nRxi7'
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", o'Rr2,lVi
nEndPos = " + nFileLength); {N.JA=
// fileSplitterFetch[nPos.length-1].start(); \3K%>
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//等待子线程结束 `IC2}IiF
//int count = 0; 2Q bCH}
//是否结束while循环 P]h-**O
boolean breakWhile = false; g/3t@7*<
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while(!bStop) 4eD>DW
{ QYB66g:
write_nPos(); qS|ns'[
Utility.sleep(500); UO~Xzx!e
breakWhile = true; /9QC$Z):<
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for(int i=0;i<nStartPos.length;i++) 8%\0v?a5
{ p)&Yr
if(!fileSplitterFetch.bDownOver) U 7_1R0h
{ gPJZpaS
breakWhile = false; H;DCkVL
break; Al}D~6MD
} A
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} nNc>nB1
if(breakWhile) V'iT>
break; Y%zYO
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//count++; #ULjK*)R
//if(count>4) $R&K-;D/8
// siteStop(); EX"o9'
} k`(Cwp{Oc
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System.err.println("文件下载结束!"); B'}pZOa[Wb
} n.l7V<1
catch(Exception e){e.printStackTrace ();} G4<M@ET
} `zoC++hx
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//获得文件长度 G2 {R5F !
public long getFileSize()
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int nFileLength = -1; =zsA@UM0
try{ EK 8r V
URL url = new URL(siteInfoBean.getSSiteURL()); &x.n>O
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); YQ$Wif:@(n
httpConnection.setRequestProperty("User-Agent","NetFox"); eeM$c`Y<
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int responseCode=httpConnection.getResponseCode(); A7enC,Ey
if(responseCode>=400) bdYx81
{ Eb~e=){
processErrorCode(responseCode); Rm&4Pku
return -2; //-2 represent access is error hd%O\D?
} cOoF +hz0O
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String sHeader; pPH"6
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for(int i=1;;i++) [}Z!hq
{ jccSjGX@w
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); "lnI@t{o
//Utility.log(in.readLine()); ]w/%>
sHeader=httpConnection.getHeaderFieldKey(i); P. Gmj;
if(sHeader!=null) g;-6Hg'
{ 6` 4,
if(sHeader.equals("Content-Length")) phP%
{ =IEei{
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); XGcl9FaO}
break; Mh@RO|F
} {^A,){uX]
} S4C4_*~Vd
else njGZ#{"eC
break; \J-}Dp\0b
} ]yV,lp
} Y+Cqc.JBQ
catch(IOException e){e.printStackTrace ();} %pUA$oUt
catch(Exception e){e.printStackTrace ();} z/P^Bx]r
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Utility.log(nFileLength); =2OLyZDI
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return nFileLength; $*qQ/hi
} <!a%GI
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//保存下载信息(文件指针位置) EHH+)mlo
private void write_nPos() #v\o@ArX
{ V]W-**j<
try{ l|L
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output = new DataOutputStream(new FileOutputStream(tmpFile)); VpyqVbx1
output.writeInt(nStartPos.length); EXizRL-9o
for(int i=0;i<nStartPos.length;i++) uGY(`
{ *T-v^ndJh
// output.writeLong(nPos); f5P@PG]{
output.writeLong(fileSplitterFetch.nStartPos); 9iM[3uyO
output.writeLong(fileSplitterFetch.nEndPos); jpt-5@5O
} u!TMt8+c
output.close(); P*g:rg
} cNG`-+U'
catch(IOException e){e.printStackTrace ();} /|WBk}
catch(Exception e){e.printStackTrace ();} ,T0q.!d
} [WUd9fUL
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//读取保存的下载信息(文件指针位置) %ou@Y`
private void read_nPos() <G /a-Z
{ cIQe^C
try{ Rc#c^F<
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ?X nKKw\
int nCount = input.readInt(); #<81`%
nStartPos = new long[nCount]; LPS]TG\
nEndPos = new long[nCount]; 2|JtRE+
for(int i=0;i<nStartPos.length;i++) OR<%h/ \f
{ .9$
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nStartPos = input.readLong(); "W@>lf?"
nEndPos = input.readLong(); rtT*2k*
} +?ilTU
input.close(); c^8csQ fG
} {O5(O oDa
catch(IOException e){e.printStackTrace ();} c;doxNd6
catch(Exception e){e.printStackTrace ();} R=<uf:ca
} G~{#%i
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private void processErrorCode(int nErrorCode) bq"dKN`
{ 2+}hsGnp
System.err.println("Error Code : " + nErrorCode); IP+.L]S
} zc&i 4K
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//停止文件下载 !Nx'4N`&l
public void siteStop() I`S?2i2H
{ N'=b8J-fF
bStop = true; R:,
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for(int i=0;i<nStartPos.length;i++) =S<