/* /DyeMCY-
**SiteFileFetch.java B:0oT
*/ jpS$5Ct
package NetFox; ]];pWlo!
import java.io.*; {:VK}w
import java.net.*; JC->
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public class SiteFileFetch extends Thread { qsXkm4
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={
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SiteInfoBean siteInfoBean = null; //文件信息Bean 44B D2`nF
long[] nStartPos; //开始位置 XqUQ{^;aI
long[] nEndPos; //结束位置 XksI .]tfj
FileSplitterFetch[] fileSplitterFetch; //子线程对象 v_pe=LC{-e
long nFileLength; //文件长度 n}e%c B
boolean bFirst = true; //是否第一次取文件 Im!b-1
boolean bStop = false; //停止标志 @>.aQE
File tmpFile; //文件下载的临时信息 8 l)K3;q_
DataOutputStream output; //输出到文件的输出流 JhwHsx/
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) DTM(SN8R+n
public SiteFileFetch(SiteInfoBean bean) throws IOException Lk@+iHf
{ frW\!r{LT
siteInfoBean = bean; :A!EjIL`#
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 83
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tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ~<O.Gu&"R
if(tmpFile.exists ()) m.`I}
{ y6-P6T
bFirst = false; K5T1dBl,0
read_nPos(); X=Ar"Dx}}s
} UBM#~~sM
else '[%Pdd]!
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{ 3`{;E{
nStartPos = new long[bean.getNSplitter()]; DEhR\Z!
nEndPos = new long[bean.getNSplitter()]; Ta/zDc"e
} 2|i1}
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public void run() bma.RCyY<
{ 3+d^Bpp4
//获得文件长度 P]y{3y:XxM
//分割文件 <YEKbnw$o
//实例FileSplitterFetch O-)[!8r
//启动FileSplitterFetch线程 wb(S7OsMO
//等待子线程返回 s_RK x)w@
try{ dhxzW@'nIL
if(bFirst) }fkdv6mz
{ ,Nhv#U<$
nFileLength = getFileSize(); E3[9!L8gb
if(nFileLength == -1) &\~*%:C
{ D]aQt%TL
System.err.println("File Length is not known!"); ~"vS$>+
} 'nh2}
else if(nFileLength == -2) "(p /3qFY
{ 7 kA+F+f
System.err.println("File is not access!"); ~vA8I#.
} KU{zzn;g
else sb3z8:r
{ `MCtm(<
for(int i=0;i<nStartPos.length;i++) 3fpaTue|x
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); I3r")}P
} O;V^Fk(
for(int i=0;i<nEndPos.length-1;i++) ~xc/Dsb$
{ &[j9Up'
nEndPos = nStartPos[i+1]; ')yYpWO
} xr@;w8X`^
nEndPos[nEndPos.length-1] = nFileLength; V_m!<sr (
} 60nP'xfR
} Opg_-Bf
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//启动子线程 QJVB:>A
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; oMLs22Do?
for(int i=0;i<nStartPos.length;i++) p^q/u
{ +cYDz#3%
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), V4}jv7>A
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 2ib,33 Z
nStartPos,nEndPos,i); &s}sA+w
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); OgQ8yKfDB
fileSplitterFetch.start(); i%<NKE;v7m
} z)v o
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), nHDKe)V
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ~8(Xn2
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 40`Qsv0#
nEndPos = " + nFileLength); [bX^_ Y
// fileSplitterFetch[nPos.length-1].start(); dyf>T}Iy
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//等待子线程结束 q "T?
//int count = 0; )F&.0 '
//是否结束while循环 |@1(^GX
boolean breakWhile = false; 0g=vMLi
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while(!bStop) <"`f!k#[
{
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write_nPos(); J@<f*
Utility.sleep(500); 5%QYe]D
breakWhile = true; 2^Im~p~ByE
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for(int i=0;i<nStartPos.length;i++) Ah@e9`_r
{ [Y.JC'F#
if(!fileSplitterFetch.bDownOver) g$"x,:2x{
{ )=#Js<&3:
breakWhile = false; xZ%3e
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break; K8-1?-W
} R1Q,m
} U,T#{
if(breakWhile) iR{@~JN=)
break; 4G;KT~Cgb
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//count++; 5W|wDy
//if(count>4) FYE(lEjxi
// siteStop(); \r{wNqyv
} ThW9=kzQW
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System.err.println("文件下载结束!"); XVfUr\=,T
} 9
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catch(Exception e){e.printStackTrace ();} BdU .;_K
} ?G~rYETvw
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//获得文件长度 $RF.LVc
public long getFileSize() ^qBm%R(
{ @cxM#N8e
int nFileLength = -1; ,\3Cq2h
try{ Z[Iej:o5
URL url = new URL(siteInfoBean.getSSiteURL()); HfP<hQmN'
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); l?m 3*
httpConnection.setRequestProperty("User-Agent","NetFox"); roG<2i F
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int responseCode=httpConnection.getResponseCode(); > QN-K]YLL
if(responseCode>=400) 1>OU~A"
{ U61
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processErrorCode(responseCode); 3xP<J)S0
return -2; //-2 represent access is error #n.v#FyNx
} IQ~Anp^R
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String sHeader; D,FgX/&i/
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for(int i=1;;i++) Bonj K#
{ =x(k)RTDu
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ^c.pvC"4j
//Utility.log(in.readLine()); rP"Y.;s
sHeader=httpConnection.getHeaderFieldKey(i); y/_=
if(sHeader!=null) }7{(o-
{ ##F$8d)q
if(sHeader.equals("Content-Length")) mAIl)mq|g
{ 2Z<S^9O9
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); S7cD}yx*[
break; +:70vZc:V@
} A>S7Ap4z>
} 17;9> *O'
else 7T!t*sSO'
break; eW3?3l`fvt
} 48J{Y3F
} F2 <Q~gQ;
catch(IOException e){e.printStackTrace ();} 4z~;4
catch(Exception e){e.printStackTrace ();} j1K~zG
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Utility.log(nFileLength); 3&c'3y:b
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return nFileLength; K~^o06 Y
} LSXsq}
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//保存下载信息(文件指针位置) )ytP$,r![S
private void write_nPos() :AuK Q`c
{ 1{cF/ :o
try{ lSd tw b
output = new DataOutputStream(new FileOutputStream(tmpFile)); j 7O!uUQQ
output.writeInt(nStartPos.length); fffWvf
for(int i=0;i<nStartPos.length;i++) 9M|#X1r{%{
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// output.writeLong(nPos); f1o^:}5x
output.writeLong(fileSplitterFetch.nStartPos); SjJ$Oinc
output.writeLong(fileSplitterFetch.nEndPos); *(i%\
} r<P? F
output.close(); &js$qgY
} |6Iw\YU
catch(IOException e){e.printStackTrace ();} G2c\"[N1/
catch(Exception e){e.printStackTrace ();} L-q)48+^k
} hA&m G33
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//读取保存的下载信息(文件指针位置) NP~3!b
private void read_nPos() ^$oEM0h
{ fG.6S"|M
try{ +>a(9r|:
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); es+ZPX>Y
int nCount = input.readInt(); L!ms{0rJ
nStartPos = new long[nCount]; * "?,.
nEndPos = new long[nCount]; OMYbCy^
for(int i=0;i<nStartPos.length;i++) NW21{}=4
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nStartPos = input.readLong(); }>YEtA
nEndPos = input.readLong(); ^QHgc_oDm
} pMUUF5
input.close(); y=SpIbn{
} pm= s
catch(IOException e){e.printStackTrace ();} UK@hnQU8`
catch(Exception e){e.printStackTrace ();} EW]8k@&g
} 6Ol)SQE,
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private void processErrorCode(int nErrorCode) {K/xI
{ =1O;,8`
System.err.println("Error Code : " + nErrorCode); ;1TQr3w
} O4a~(*f
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//停止文件下载 YQO9$g0%
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public void siteStop() \[B#dw#
{ HXqG;Fds(
bStop = true; b|@f!lA
for(int i=0;i<nStartPos.length;i++) 6gq`V,
fileSplitterFetch.splitterStop(); nK]L0 *s
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} L9z5o(Aa
} o O1Fw1Y
//负责部分文件的抓取 i^}DIx{
**FileSplitterFetch.java :pP l|"
*/ $f6wmI;<y
package NetFox; VK}H;
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