/* 7"20hAd
**SiteFileFetch.java a&c6.#E{y
*/ +l9!Fl{MK\
package NetFox; 3?V_BUoON
import java.io.*; c'%-jG)\
import java.net.*; nxWY7hU
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public class SiteFileFetch extends Thread { YjxF}VI~<
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SiteInfoBean siteInfoBean = null; //文件信息Bean lku[dQdk
long[] nStartPos; //开始位置 =g9*UzA"O
long[] nEndPos; //结束位置 |wiqGzAr{
FileSplitterFetch[] fileSplitterFetch; //子线程对象 $$Oey)*
long nFileLength; //文件长度 1(I6.BHW
boolean bFirst = true; //是否第一次取文件 e4H A7=z
boolean bStop = false; //停止标志 =5/9%P8j9
File tmpFile; //文件下载的临时信息 8<8:+M}
DataOutputStream output; //输出到文件的输出流 A OISs4
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) -likj#Z
public SiteFileFetch(SiteInfoBean bean) throws IOException Sjvdirr
{ `$,GzS (
siteInfoBean = bean; Ta(Y:*Ri
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); [d(U38BI
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); K/i*w<aPb7
if(tmpFile.exists ()) `6lr4Kk @R
{ NG "C&v
bFirst = false; D~hg$XzK
read_nPos(); ="Ho%*@6
} (tIo:j
else gy#/D& N[
{ gtk7)Uh
nStartPos = new long[bean.getNSplitter()]; @k,z:~[C=
nEndPos = new long[bean.getNSplitter()]; $8UUzk
} 3Z5D)zuc
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} %E#s\B,w
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public void run() n>ULRgiT:o
{ A
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//获得文件长度 Si8pzd
//分割文件 }uJu>'1[G
//实例FileSplitterFetch }+.}J
//启动FileSplitterFetch线程 [x+FcXb
//等待子线程返回 oW ::hB
try{ g)#W>.Asd
if(bFirst) fI&t]
{ 06O2:5zF
nFileLength = getFileSize(); B:'J`M"N
if(nFileLength == -1) TW)c#P43K
{ h"X;3b^ m
System.err.println("File Length is not known!"); ,]9P{k]O
} % tS,}ze
else if(nFileLength == -2) /t+f{VX$
{ ~;l@|7wGz
System.err.println("File is not access!"); ED=V8';D
} hs^zTZ_
else tSr8 zAV
{ B2>H_dmQ
for(int i=0;i<nStartPos.length;i++) &e E=<x
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); 0?s|i :
} %j.0G`x9 +
for(int i=0;i<nEndPos.length-1;i++) ',9V|jvK
{ 't:;irLW.
nEndPos = nStartPos[i+1]; BXtCSfY$
} 3{'Ne}5%I
nEndPos[nEndPos.length-1] = nFileLength; 5rw 7;'
} [tlI!~Z
} Bt@^+vH ~
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//启动子线程 ur)9x^y
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; Of*Pw[vD
for(int i=0;i<nStartPos.length;i++) 4 ezEW|S
{ - Ajo9H
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ] eotc2?u
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), r)y=lAyF>
nStartPos,nEndPos,i); bo2H]PL*
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); J\+0[~~
fileSplitterFetch.start(); &XIt5<$~R
} [w0QZyUn
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), |Luqoa
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 3@kf@Vf
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ?qPo=~y01
nEndPos = " + nFileLength); f.D?sH An
// fileSplitterFetch[nPos.length-1].start(); MqW7cjg
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//等待子线程结束 \y97W&AN
//int count = 0; |]jb& M
//是否结束while循环 J"!vu.[
boolean breakWhile = false; Sdp&jZY
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while(!bStop) %RTBV9LIXr
{ <^&ehy:7y
write_nPos();
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Utility.sleep(500); ,)0H3t
breakWhile = true; Bo)3!wO8
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for(int i=0;i<nStartPos.length;i++) v\c>b:AofD
{ e%svrJ2
if(!fileSplitterFetch.bDownOver) eWCb73
{ `#rL*;\uV
breakWhile = false; j_K4;k#r
break; @Xt*Snd
} ,|3MG",@@h
} ^X=arTE
if(breakWhile) _GV:HOBi
break; PRx8I
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//count++; BL0 {HV!
//if(count>4) caIL&G,
// siteStop(); Z-^LKe
} Z/W:97M
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System.err.println("文件下载结束!");
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} U bXh,QEG*
catch(Exception e){e.printStackTrace ();} {&cJDqz5=
} pV9IHs}
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//获得文件长度 '9laa=H%8
public long getFileSize() fa-IhB1!K
{ qB~rQPa
int nFileLength = -1; \z>fb%YW
try{ `nUXDmdwzO
URL url = new URL(siteInfoBean.getSSiteURL()); ),0g~'I~D
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); v_BcTzQ0S
httpConnection.setRequestProperty("User-Agent","NetFox"); @:j}Jmg
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int responseCode=httpConnection.getResponseCode(); Hkk/xNP
if(responseCode>=400) ?Y$JWEPJ
{ uW=k K0E
processErrorCode(responseCode); ^|/TC!v]M
return -2; //-2 represent access is error ]3x?
} EMh7z7}Rr
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String sHeader; ,$@bE
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for(int i=1;;i++) sQ=]NF)\
{ hB"fhX
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); {Bk[rCl
//Utility.log(in.readLine()); riUwBiVa?2
sHeader=httpConnection.getHeaderFieldKey(i); >W%EmnLK
if(sHeader!=null) p?*Q- f
{ iIvc43YV%
if(sHeader.equals("Content-Length")) 9%k2'iV7
{ ?8I?'\F;
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader));
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break; 8LyD7P1\
} D60aH!ft
} 6w*dKInG[-
else x/NfZ5e0X
break; QCD.YFM
} :nh_k4S@v
} ?}Z1bH
catch(IOException e){e.printStackTrace ();} ?5+.`L9H
catch(Exception e){e.printStackTrace ();} Cw
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Utility.log(nFileLength); %<)2/|lCd
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return nFileLength; |EIng0a
} q2/pNV#
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//保存下载信息(文件指针位置) 9`T)@Uj2n
private void write_nPos() bbtGXfI+SB
{ dV*]f$wQ
try{ +dWDxguE{w
output = new DataOutputStream(new FileOutputStream(tmpFile)); |!1Y*|Q%s
output.writeInt(nStartPos.length); 8Ry3`ct
for(int i=0;i<nStartPos.length;i++) ]S&&|Fc
{ i)o2klIkB
// output.writeLong(nPos); ."TxX.&HE
output.writeLong(fileSplitterFetch.nStartPos); J &o|QG
output.writeLong(fileSplitterFetch.nEndPos); h2)yq:87
} zE336
output.close(); hP=WFD&
} H~oail{EQ
catch(IOException e){e.printStackTrace ();} 5/q}`T9i%7
catch(Exception e){e.printStackTrace ();} c CSs
} fWCo;4<5?
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//读取保存的下载信息(文件指针位置) P#E &|n7DT
private void read_nPos() Yab%/z2:
{ q YC;cKv
try{ 6}Vf\j~
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 9
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int nCount = input.readInt(); a_[Eh fE
nStartPos = new long[nCount]; \(J8#V
nEndPos = new long[nCount]; `uq8G
for(int i=0;i<nStartPos.length;i++) H ;7(}:.
{ @D)al^]x6
nStartPos = input.readLong(); =4vy@7/
nEndPos = input.readLong(); 8&;UO{
} pe0F0Ruy
input.close(); v&Ii^?CvO
} f&