/* u$t*jw\fHg
**SiteFileFetch.java x"8(j8e
*/ mC>7l7%
package NetFox; L9fhe,en
import java.io.*; %j2YCV7
import java.net.*; r.-NfK4
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public class SiteFileFetch extends Thread { 7<IrN\@U
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SiteInfoBean siteInfoBean = null; //文件信息Bean HY5g>wv@
long[] nStartPos; //开始位置 (}4tj4d
long[] nEndPos; //结束位置 \dIIZSN
FileSplitterFetch[] fileSplitterFetch; //子线程对象 "h$A. S
long nFileLength; //文件长度 Bq79Ev
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boolean bFirst = true; //是否第一次取文件 s,K @t_J
boolean bStop = false; //停止标志 >AN`L`%2
File tmpFile; //文件下载的临时信息 ORcl=Eo>
DataOutputStream output; //输出到文件的输出流 tq<7BO<6
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) *Z|!%C
public SiteFileFetch(SiteInfoBean bean) throws IOException #OJ^[Zi<
{ S$BwOx3QF
siteInfoBean = bean; uPR usG4!R
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); b]4yFwb
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); G
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if(tmpFile.exists ()) egx(N
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{ e_k1pox]l
bFirst = false; E^A9u
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read_nPos(); +c}fDrr)
} T>vH ZZiO
else Nf-IDK
{ 9y.C])(2
nStartPos = new long[bean.getNSplitter()]; C<qJnB:B9
nEndPos = new long[bean.getNSplitter()]; h(GgkTj4+
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public void run() [5 a`$yaQ
{ j,EE`g&
//获得文件长度 PovPO
//分割文件 _)2NFq
//实例FileSplitterFetch cU%#oEMf<
//启动FileSplitterFetch线程 :ozHuHJ#
//等待子线程返回
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try{ > ^n'
if(bFirst) f`/JY!uj{
{ ;P5\EJo
nFileLength = getFileSize(); [rqq*_eB
if(nFileLength == -1) lQi2ym?
{ -("79v>#
System.err.println("File Length is not known!"); Pa0tf:
} jY87NHg
else if(nFileLength == -2) 1ww|km
{ &vdGKYs 6
System.err.println("File is not access!"); p7zHP
} :Gy
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else ;Jv)J3y
{ lG fO
for(int i=0;i<nStartPos.length;i++) I4qzdD
{ \Qu~iB(Y
nStartPos = (long)(i*(nFileLength/nStartPos.length)); VI" ,E}
} =2J+}ac
for(int i=0;i<nEndPos.length-1;i++) ,0lRs
{ sGMC$%e}
nEndPos = nStartPos[i+1]; "o;l8$)VL
} X*$ 7g;
nEndPos[nEndPos.length-1] = nFileLength; 2$qeNy
} pOIFO=k
} +;FF0_
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//启动子线程 <adu^5BI
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; AGK+~EjL@
for(int i=0;i<nStartPos.length;i++) g@B9i=
{ C(e!cOG
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), P*I\FV
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), aOWbIS[8
nStartPos,nEndPos,i); ,dZ
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Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); <`-"K+e!J
fileSplitterFetch.start(); CEqfsKrsxE
} 1hi^
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), \&ERSk2
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); GlQ=M )E
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", (t<i?>p
nEndPos = " + nFileLength); g>OGh o
// fileSplitterFetch[nPos.length-1].start(); k?|VFh1
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f=}u;^
//等待子线程结束 ;u}MG3Y8
//int count = 0; oJyC{G
//是否结束while循环 X=${`n%LG
boolean breakWhile = false; c7wza/r>
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while(!bStop) ~g1@-)zYxK
{ Qbt
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write_nPos(); |])%yRAGQ
Utility.sleep(500); m_\CK5T_
breakWhile = true; rUx%2O|qu
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for(int i=0;i<nStartPos.length;i++) Y<a/(`
{ ^6J*yV%
if(!fileSplitterFetch.bDownOver) =jg!@H=_i
{ Y*wbFL6`
breakWhile = false; i,;Q
break; .}Bb
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} -cY/M~
} 0A5xG&
if(breakWhile) "=4=Q\0PT
break; w$61+KH K
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//count++; @OwU[\6fc}
//if(count>4) >6jyd{
// siteStop(); R`TM@aaS:
} _@?]!J[
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System.err.println("文件下载结束!"); -J? df
} f4@Dn
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catch(Exception e){e.printStackTrace ();} {a%T <WW
} BtU,1`El5
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//获得文件长度 9&rn3hmP
public long getFileSize() b-~`A;pr
{ :4(7W[r6
int nFileLength = -1; e5veq!*C?
try{ prIq9U|@
URL url = new URL(siteInfoBean.getSSiteURL()); /91H!s
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); &^&k]JBaV
httpConnection.setRequestProperty("User-Agent","NetFox"); <@;e N&
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int responseCode=httpConnection.getResponseCode(); x%cKTpDh!
if(responseCode>=400) %pTbJaM\U
{ 4I {|M,+
processErrorCode(responseCode); Eq'{uV:
return -2; //-2 represent access is error QD\S E
} RsTpjY*Xb
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String sHeader; 8MW|CM4Q
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for(int i=1;;i++) g*Cs/w
{ 2Ybz`O!
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ,:=E+sS
//Utility.log(in.readLine()); "#[Y[t\Ia
sHeader=httpConnection.getHeaderFieldKey(i); =_
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if(sHeader!=null) 5%tIAbGW
{ nwO;>Qr
if(sHeader.equals("Content-Length"))
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{ 7sHtJr
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); {wA@5+[
break; BT`/OD@
} <
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} {yspNyOx
else /\#qz.c2K
break; N;Hf7K
} %v}:#_va]
} .HGEddcC
catch(IOException e){e.printStackTrace ();} 0 B3*\ H}5
catch(Exception e){e.printStackTrace ();} oX?2fu-
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Utility.log(nFileLength); ^f3F~XhY3
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return nFileLength; `$MO.K{
} }\l5|Ft[!
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//保存下载信息(文件指针位置) z
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private void write_nPos() L & PhABZ
{ ih1SN,/
try{ q;B-np?U
output = new DataOutputStream(new FileOutputStream(tmpFile)); '1.T-.4>&
output.writeInt(nStartPos.length); {u9VHAXCf
for(int i=0;i<nStartPos.length;i++) V3I&0P k
{ O a-ZeCq
// output.writeLong(nPos); 9"MC<
output.writeLong(fileSplitterFetch.nStartPos); E;-R<X5n
output.writeLong(fileSplitterFetch.nEndPos); ^dqyX(
} p|AIz3
output.close(); S'TF7u
} A"S})
catch(IOException e){e.printStackTrace ();} 7CwG(c/5
catch(Exception e){e.printStackTrace ();} M[TgNWl/[
} ;Iv)J|*
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//读取保存的下载信息(文件指针位置) R<k4LHDy
private void read_nPos() Oo=}j
{ dc%+f
try{ Is?0q@
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 6ng
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int nCount = input.readInt(); qIO)Z
nStartPos = new long[nCount]; fE_QB=9 cz
nEndPos = new long[nCount]; Kw-E%7gh4c
for(int i=0;i<nStartPos.length;i++) ^5"s3Qn
{ W@pVP4F0xM
nStartPos = input.readLong(); 2/>AmVM
nEndPos = input.readLong(); ,v)@&1Wh:
} .sjM$#V=
input.close(); {\lu; b!
} O`|'2x{[O
catch(IOException e){e.printStackTrace ();} ]S%qfna e1
catch(Exception e){e.printStackTrace ();} )v
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} =b !f
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private void processErrorCode(int nErrorCode) ]j_S2lt
{ hc~--[1c:
System.err.println("Error Code : " + nErrorCode); H#wn3O
} 9\Yj`,i5
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//停止文件下载 \JN<