/* ?^hC|IR$
**SiteFileFetch.java bvoR?D\-"
*/ xn-n{U"
package NetFox; #pZ3xa3R
import java.io.*; !`u)&.t7
import java.net.*; 6l4l74
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public class SiteFileFetch extends Thread { 7-^d4P+|g
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SiteInfoBean siteInfoBean = null; //文件信息Bean 0@
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long[] nStartPos; //开始位置 `
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long[] nEndPos; //结束位置 k,?k37%T]
FileSplitterFetch[] fileSplitterFetch; //子线程对象 _jtBU
long nFileLength; //文件长度 Mqq7;w@(J
boolean bFirst = true; //是否第一次取文件 OlP#|x*
boolean bStop = false; //停止标志 }}
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File tmpFile; //文件下载的临时信息 Nz m
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DataOutputStream output; //输出到文件的输出流 mGIS[_dcs
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) xd*kNY
public SiteFileFetch(SiteInfoBean bean) throws IOException ]8RcZn
{ {h2D}F
siteInfoBean = bean; 1&dWt_\
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); m^wYRA.
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); qwN-VCj
if(tmpFile.exists ()) oOuWgr]0
{ |2mEowAd
bFirst = false; BM3nZ<%3
read_nPos(); !Ed';yfz\(
} kWgxswl7H
else [j5L}e!T
{ k@[Bx>
nStartPos = new long[bean.getNSplitter()]; :wIbKs.r
nEndPos = new long[bean.getNSplitter()]; mF
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} ;&iQNXL
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} 6%)dsTAB
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public void run() "]sr4Jg=
{ IkD\YPL;
//获得文件长度 .7oz
//分割文件 [z?<'Tj
//实例FileSplitterFetch BsxQW`>^y
//启动FileSplitterFetch线程 f;QWlh"9
//等待子线程返回 NbSwn}e_
try{ =x=#Etj|
if(bFirst) 'E6)6N
{ myH#.$=A
nFileLength = getFileSize(); !.9NJ2'8
if(nFileLength == -1) L='GsjF0}
{ KX{ S8_
System.err.println("File Length is not known!"); &7;W=uF
} w*
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else if(nFileLength == -2) NJ3b Oq
{ QH+Oi&xH
System.err.println("File is not access!"); Pj^6.f+
} a6[bF
else 'y@0P5[se
{ oM J5;
for(int i=0;i<nStartPos.length;i++) g,\<fY+4
{ xmbkn}@A
nStartPos = (long)(i*(nFileLength/nStartPos.length)); |ONkRxr@!
} k5|h8%h8
for(int i=0;i<nEndPos.length-1;i++) ] OR]
{ )wmXicURC
nEndPos = nStartPos[i+1]; XmLHZ,/
} )abo5
nEndPos[nEndPos.length-1] = nFileLength; 7,Nd[
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} wF}/7b54
} y;uk|#qnPS
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//启动子线程 L[D}pL=
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ZVViu4]?y
for(int i=0;i<nStartPos.length;i++) ^*RmT
{ q_JES4ofx
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), evq*&.6\
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), j`(o\Fd )
nStartPos,nEndPos,i); Nn+leM
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); V*LpO8=
fileSplitterFetch.start(); rT <=`9^{
} }]kzj0m
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), {l![{
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); H>k=V<
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", !DXKn\aQf
nEndPos = " + nFileLength); D}Z].c@E
// fileSplitterFetch[nPos.length-1].start(); dYW19$W
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//等待子线程结束 [/6IEt3}B
//int count = 0; nx84l 7<
//是否结束while循环 >tYptRP
boolean breakWhile = false; A6=
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while(!bStop) 8nW#Q<s
{ 1Sr@$+VGO
write_nPos(); LsoP >vJG
Utility.sleep(500); u<:RSg
breakWhile = true; "4zTP!Ow
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for(int i=0;i<nStartPos.length;i++) P'R!"
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{ 7C
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if(!fileSplitterFetch.bDownOver) ?FxxH*>"
{ M5CFW >T
breakWhile = false; (ybKACx
break; 5l}v
}
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} ?=$a6o
if(breakWhile) ,_D`0B6o
break; %TP0i#J
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//count++; 8 W79
//if(count>4) zvL;.U
// siteStop(); ]`b/_LJN$F
} M1-n
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System.err.println("文件下载结束!"); mY+Jju1
} P?\ IlziCB
catch(Exception e){e.printStackTrace ();} q{nNWvL
} /q0[T{Wz$
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]%!:'#
//获得文件长度 M| :wC
public long getFileSize() _Y?p =;
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int nFileLength = -1; eF823cH2x_
try{ *0^!%Y'/4
URL url = new URL(siteInfoBean.getSSiteURL()); T8bk \\Od
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); /PafIq
httpConnection.setRequestProperty("User-Agent","NetFox"); ZBUEg7c
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int responseCode=httpConnection.getResponseCode(); w^6rgCl
if(responseCode>=400) `A_CLVE
{ GWsvN&nr
processErrorCode(responseCode); ?%Hj,b
return -2; //-2 represent access is error qcSlqWDk
} R?Vs8?
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String sHeader; &`Oj<UyJY
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for(int i=1;;i++) gdPv,p19L
{ R*|y:T,H
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); q$L=G
//Utility.log(in.readLine()); pnl7a$z
sHeader=httpConnection.getHeaderFieldKey(i); Uus%1hC%a
if(sHeader!=null) ?%-VSL>$w=
{ Up*1j:_O
if(sHeader.equals("Content-Length")) ND $m|V-C
{ I|8'#QX
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ^yL6A1
break; '#LbIv4
} R/Y9t8kk
} n;+CV~
else R9@Dd
break; E%8Op{zv_
} v'na{"
} $a.fQ<,\X
catch(IOException e){e.printStackTrace ();} k<(G)7'gm
catch(Exception e){e.printStackTrace ();} HI&N&a9C
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Utility.log(nFileLength); =;Ap+}
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return nFileLength; v<CZ.-r\j
} &B?TX.
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//保存下载信息(文件指针位置) {,xI|u2R
private void write_nPos() utOATjB.z
{ @{/GdB,}
try{ `s1>7XWf
output = new DataOutputStream(new FileOutputStream(tmpFile)); @pq2Z^SQ H
output.writeInt(nStartPos.length); $1lI6 =
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for(int i=0;i<nStartPos.length;i++) mWEaUi)Zz
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// output.writeLong(nPos); sT8(f=^)8F
output.writeLong(fileSplitterFetch.nStartPos); T6mbGE*IeE
output.writeLong(fileSplitterFetch.nEndPos);
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} oE/g)m%
output.close(); <5@VFRjc
} 8G3CQ]G
catch(IOException e){e.printStackTrace ();} W;L<zFFbU)
catch(Exception e){e.printStackTrace ();} \"k[y+O],4
} I
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//读取保存的下载信息(文件指针位置) 7 6 nrDE
private void read_nPos() \EI<1B
{ J34/rL/s
try{ 3QSA|
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ,jH<i.2R
int nCount = input.readInt(); 3T1t !q4/5
nStartPos = new long[nCount]; m{#?fR=9
nEndPos = new long[nCount]; ;|yd}q=p
for(int i=0;i<nStartPos.length;i++) X;:qnnO
{ :)JIKP%$\)
nStartPos = input.readLong(); C?dQ
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nEndPos = input.readLong(); Odn`q=
} )T0%<(J
input.close(); \iL{q^Im
} py|ORVN(Z
catch(IOException e){e.printStackTrace ();} z3Id8G&>
catch(Exception e){e.printStackTrace ();} =#=<%HPT
} pzr\<U`
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)}!Z^ND*
private void processErrorCode(int nErrorCode) oz8z%*9(
{ #Sg< 9xsW
System.err.println("Error Code : " + nErrorCode); [pY1\$,
} dMd2a4
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//停止文件下载 W0-KFo.'
public void siteStop() E^s<5BC;
{ K x4_`;>
bStop = true; ,]Gi942
for(int i=0;i<nStartPos.length;i++) };{Qx
fileSplitterFetch.splitterStop(); CU`yi.)T{
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} vQH6CB"
} C\`*_t
//负责部分文件的抓取 |(eRv?Qy@
**FileSplitterFetch.java simD<&p
*/ !&(^R<-id
package NetFox; !#[B#DZc(
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import java.io.*; [LF<aR5
import java.net.*; ^QG;:.3v
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public class FileSplitterFetch extends Thread { kO3N.t@n
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String sURL; //File URL q 3nF\Me0
long nStartPos; //File Snippet Start Position l/i7<