/* 8tL~FiHb"
**SiteFileFetch.java LV Ge]lD
*/ 7#Ft|5$~q
package NetFox; tw;}jh
import java.io.*; 1Mzmg[L8
import java.net.*; 'L'R9&o<X
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public class SiteFileFetch extends Thread { ?9/G[[(
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SiteInfoBean siteInfoBean = null; //文件信息Bean 4s-!7
long[] nStartPos; //开始位置 e
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long[] nEndPos; //结束位置 vsPu*[%
FileSplitterFetch[] fileSplitterFetch; //子线程对象 =cI(d ,
long nFileLength; //文件长度 P
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boolean bFirst = true; //是否第一次取文件 V
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boolean bStop = false; //停止标志 ^q5#ihM
File tmpFile; //文件下载的临时信息 XS#Qu=,-
DataOutputStream output; //输出到文件的输出流 [,Gg^*umS
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) x5Bk/e'
public SiteFileFetch(SiteInfoBean bean) throws IOException j#|ZP-=1_
{ X?O[r3<
siteInfoBean = bean; y[;>#j$
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); c 9Mz]1@f
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ?uu*L6
if(tmpFile.exists ()) oH@78D0A
{ Q &8-\
bFirst = false; HMXE$d=[
read_nPos(); V3Bz
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} _BufO7`.
else llq<egZpm
{ rq{$,/6.
nStartPos = new long[bean.getNSplitter()]; /ZX}Nc g
nEndPos = new long[bean.getNSplitter()]; \bXa&Lq
} yi[x}ffdE
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} $4\j]RE!
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public void run() +A+)=/i;
{ mFeP9MfJ
//获得文件长度 :jf3HG
//分割文件 Wwo0%<2y
//实例FileSplitterFetch 6]N.%Y[(
//启动FileSplitterFetch线程 k6^Z~5
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//等待子线程返回 rv;3~'V
try{ Jm@oDME_E
if(bFirst) }V>T M{
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nFileLength = getFileSize(); vO=fP_
if(nFileLength == -1) )7@0[>
{ P>T"cv
System.err.println("File Length is not known!"); f$( e\++
} 4i bc
else if(nFileLength == -2) 'w/hw'F6
{ \e_O4
System.err.println("File is not access!"); d9ihhqq3}
} ~&O%N
else a*;b^Ze`v
{ t^HRgY'NjM
for(int i=0;i<nStartPos.length;i++) sLFl!jX
{ hZ3bVi)L\
nStartPos = (long)(i*(nFileLength/nStartPos.length)); :&Nbw
} ^Cmyx3O^
for(int i=0;i<nEndPos.length-1;i++) 0(Ij%Wi,
{ a.'*G6~Qgw
nEndPos = nStartPos[i+1]; |qLh5Ty
} }G=M2V<L
nEndPos[nEndPos.length-1] = nFileLength; e!`i3KYn"
} `/g
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} VQI3G
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//启动子线程 v=k$A
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; -di o5a
for(int i=0;i<nStartPos.length;i++) !wNO8;(
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 4 :=]<sc,
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 'yth'[
nStartPos,nEndPos,i); *I'yH8Fcn
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); U.TA^S]`g
fileSplitterFetch.start(); +"(jjxJm
} ~
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// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Q&&@v4L
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1);
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// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", bcR_E5x$
nEndPos = " + nFileLength); H"KCK6
// fileSplitterFetch[nPos.length-1].start(); 07)yG:q*x
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//等待子线程结束 -&;TA0~;
//int count = 0; VX/#1StC
//是否结束while循环 r/sNrB1U"y
boolean breakWhile = false; :LTN!jj
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while(!bStop) j9,P/K$:w
{ s(^mZ
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write_nPos(); AEuG v}#
Utility.sleep(500); V:27)]q
breakWhile = true; 2Hdu:"j
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for(int i=0;i<nStartPos.length;i++) sr}E+qf
{ <or2
if(!fileSplitterFetch.bDownOver) W l16`9
{ -DCbko
breakWhile = false; yBRC*0+Vy
break; m3ff;,
} 4sM.C9W
} 4~=l}H>&
if(breakWhile) 0ksa
break; ?}7p"3j'z
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//count++; lLD12d
//if(count>4) ? q&T$8zc4
// siteStop(); smLQS+UE
} <1%$Vq
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System.err.println("文件下载结束!"); Jo}eeJ;k
} ZB&6<uw
catch(Exception e){e.printStackTrace ();} }&e5$lB
} ipILG4
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//获得文件长度 qFNes)_r
public long getFileSize() ;6wA"
{ Z8oK2Dw
int nFileLength = -1; !a<ng&H^U
try{ E P+J
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URL url = new URL(siteInfoBean.getSSiteURL()); m6djeOl
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); UDni]P!E
httpConnection.setRequestProperty("User-Agent","NetFox"); )ANmIwmC#
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int responseCode=httpConnection.getResponseCode(); Faf&U%]*`
if(responseCode>=400) '=6\v!
{ x;')9/3
processErrorCode(responseCode); PuO&wI]:
return -2; //-2 represent access is error hL5|69E
} nLiY%x`S
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String sHeader; 3 9|MX21k
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for(int i=1;;i++) QwJyY{O`
{ yA>nli=
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); z~Q>V]a>;
//Utility.log(in.readLine()); 4{l,
sHeader=httpConnection.getHeaderFieldKey(i); 3t6LT
if(sHeader!=null) T5:G$-qL(
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if(sHeader.equals("Content-Length")) B+0hzkPY
{ hG:|9Sol,
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); j w9b)
break; \j)E5b+
} 6x|jPb
} $j?1g#
else ~!3r&(
break; PzR[KUK
} 9$m|'$p3sG
} o+9j?|M
catch(IOException e){e.printStackTrace ();} xRsWI!d+|
catch(Exception e){e.printStackTrace ();} TW>WHCAm
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Utility.log(nFileLength); uOGw9O-d9
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return nFileLength; X~i<g?]
} hiw|2Y&`
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//保存下载信息(文件指针位置) uXq.
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private void write_nPos() gl_^V&c
{ TNr :pE<
try{ BV+ Bk+
output = new DataOutputStream(new FileOutputStream(tmpFile)); S/I /-Bp~
output.writeInt(nStartPos.length); (2
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for(int i=0;i<nStartPos.length;i++) .-X8J t
{ CsifKHI
// output.writeLong(nPos); aoa)BNs
output.writeLong(fileSplitterFetch.nStartPos); PAOJ\U
output.writeLong(fileSplitterFetch.nEndPos); @oad,=R&
} @Pzu^
output.close(); "2T#MO/
} :<#nTh_@\'
catch(IOException e){e.printStackTrace ();} :$9tF>
catch(Exception e){e.printStackTrace ();} M {Q;:
} CC^'@~)?
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//读取保存的下载信息(文件指针位置) ~<OSYb
private void read_nPos() *U\`CXn;
{ LRMx<X8
try{ H1(Uw:V8
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 1|6%evPu(
int nCount = input.readInt(); @[i4^
nStartPos = new long[nCount]; }k
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nEndPos = new long[nCount]; A7hVHxNJ-
for(int i=0;i<nStartPos.length;i++) y
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{ Vr1<^Ib
nStartPos = input.readLong(); VD]zz
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nEndPos = input.readLong(); JO"<{ngsQ
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input.close(); JOim3(5?s
} A:9?ZI/X
catch(IOException e){e.printStackTrace ();} '1)$'
catch(Exception e){e.printStackTrace ();} Eue~Y+K*b
}
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private void processErrorCode(int nErrorCode) eSmLf*\G
{ yU}qOgXx
System.err.println("Error Code : " + nErrorCode); 8d-t|HkN
} df #$9-
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//停止文件下载 =-lb)Z"d
public void siteStop() u21EP[[,
{ "djw>|,N<
bStop = true; tlp@?(u
for(int i=0;i<nStartPos.length;i++) 3az&