/* <{'':/tXI
**SiteFileFetch.java LG;xZQx'
*/ p{.EFa>H
package NetFox; ?g9CeeH*
import java.io.*; [}FP_Su$6
import java.net.*; rt"\\sOlMB
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public class SiteFileFetch extends Thread { aFhsRE?YC=
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SiteInfoBean siteInfoBean = null; //文件信息Bean Z";o{@p
long[] nStartPos; //开始位置 Wc(?ezn
long[] nEndPos; //结束位置 iK)w3S}k1y
FileSplitterFetch[] fileSplitterFetch; //子线程对象 )]v vp{
long nFileLength; //文件长度 i^
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boolean bFirst = true; //是否第一次取文件 8R)*8bb
boolean bStop = false; //停止标志 :kgwKuhL
File tmpFile; //文件下载的临时信息 +^`c"qJo
DataOutputStream output; //输出到文件的输出流 3?2;z+cz*u
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) <n0-zCf
public SiteFileFetch(SiteInfoBean bean) throws IOException }Za[<t BWS
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siteInfoBean = bean; ?onZ:s2
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); T1D7H~\lG
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); MYLq2g\
if(tmpFile.exists ()) 4/HyO\?z5
{ Ff|?<\x0}A
bFirst = false; iHTxD1D+H
read_nPos(); anv_I=
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else lQoa[#q
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nStartPos = new long[bean.getNSplitter()]; a}MOhM6T
nEndPos = new long[bean.getNSplitter()]; >/Slk{
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} ,)%nLc
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public void run() ^lbOv}C*
{ F)!B%4
//获得文件长度 Yr"G)i~"Y
//分割文件 {n{
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//实例FileSplitterFetch 7
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//启动FileSplitterFetch线程 .{~ygHQ`f
//等待子线程返回 /SSl$
try{ Hz28L$
if(bFirst) z;1yZ4[G
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nFileLength = getFileSize(); RKRk,jRL
if(nFileLength == -1) }[?X%=
{ gr yC#
System.err.println("File Length is not known!"); mR?OSeeB
} R$wo{{KX
else if(nFileLength == -2) s!uewS.
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System.err.println("File is not access!"); V&[|%jm&
} pvkru-i]
else 0!\pS{$zB
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for(int i=0;i<nStartPos.length;i++) L7C!rS
{ !c'a<{d@
nStartPos = (long)(i*(nFileLength/nStartPos.length)); k(!#^Mlz[
} kC6J@t)
for(int i=0;i<nEndPos.length-1;i++) BPtU]Bv-
{ ,}F{V>dhn
nEndPos = nStartPos[i+1]; enE8T3
} /id(atiF^
nEndPos[nEndPos.length-1] = nFileLength; 6imDA]5N&
} ]#KZ
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} e*=N \$
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//启动子线程 `TBau:E lI
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; LQ373
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for(int i=0;i<nStartPos.length;i++) ~O&3OL:L
{ !/sXG\
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), g/J
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Q(>89*b&
nStartPos,nEndPos,i); XF'K dz>p
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); BPwFcT)i!(
fileSplitterFetch.start(); 6xvy hg#B
} Em %"]B
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ;y
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ){ArZjG>
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", [$
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nEndPos = " + nFileLength); ESL(Mf'
// fileSplitterFetch[nPos.length-1].start();
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//等待子线程结束 hZU@35~BN
//int count = 0; =T|Z[/fto
//是否结束while循环 H<Ed"-n$I<
boolean breakWhile = false; k[&+Iy
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while(!bStop) mtvfG
{ 58ev (f
write_nPos(); "O!J6
Utility.sleep(500); ^ dM,K
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breakWhile = true; zkA"2dh
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for(int i=0;i<nStartPos.length;i++) +Gg6h=u
{ eZJrV}V
if(!fileSplitterFetch.bDownOver) 7?Q<kB=f
{ .r[kNh@
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breakWhile = false; 8fY1~\G:\
break; 049E#[<Q"
} \,+act"v
} *$0uAN
if(breakWhile) C{H:-"\J9
break; ^0Cr-
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//count++; 'P3CgpF<Z2
//if(count>4) oQ{(7.e7)
// siteStop(); 0sD"Hu
} [y F>W$Bn%
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System.err.println("文件下载结束!"); 82O#Fe q
} /4}{SE
catch(Exception e){e.printStackTrace ();} 07:CcT
} xxpvVb)mF
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//获得文件长度 ""|vhgP
public long getFileSize() 8vjaQ5
{ ZaIlo5
int nFileLength = -1; Y_ b;1RN
try{ Bb_R~1
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URL url = new URL(siteInfoBean.getSSiteURL()); -|"W|K?nq
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); &-mPj82R
httpConnection.setRequestProperty("User-Agent","NetFox"); fRS)YE@a:
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int responseCode=httpConnection.getResponseCode(); n}Pz:
if(responseCode>=400) h&|q>M3
{ ,HO~NqmB4
processErrorCode(responseCode);
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return -2; //-2 represent access is error (U#4j 6Q
} Q ;V `
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String sHeader; 35|F?Jx.r
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//9Ro"
for(int i=1;;i++) EdbLAagI6
{ ;4tmnC>OnA
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); E2+x?Sc+
//Utility.log(in.readLine()); ^@5#jS2
sHeader=httpConnection.getHeaderFieldKey(i); I
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if(sHeader!=null) E`]lr[
{
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if(sHeader.equals("Content-Length")) c'ExZ)RJ
{ J\VG/)E
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); lv\C(^mGq
break; nK=-SQ
} t6V@00M@
} k`[ L
else A2.[P==
break; g).k+
} Lx6C fR
} p^S]O\;M7
catch(IOException e){e.printStackTrace ();} A14}
catch(Exception e){e.printStackTrace ();} Hyx%FN=
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Utility.log(nFileLength); Ry2rQM`
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return nFileLength; WtlPgT;wE
} 9,g &EnvG
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//保存下载信息(文件指针位置) =23JE'^=
private void write_nPos() unn2MP'
{ \@6PA
try{ s2s}5b3
output = new DataOutputStream(new FileOutputStream(tmpFile)); j<[+vrj
output.writeInt(nStartPos.length); 94Wf ]
for(int i=0;i<nStartPos.length;i++) rN* ,U\q
{ H=Sy.
// output.writeLong(nPos); yv2BbrYyy
output.writeLong(fileSplitterFetch.nStartPos); <7Igd6u
output.writeLong(fileSplitterFetch.nEndPos); agdiJ-lyQ
} kH$)0nK
output.close(); N]qX^RSb
} $42%H#
catch(IOException e){e.printStackTrace ();} &aD]_+b
catch(Exception e){e.printStackTrace ();} svki=GD_(.
} 9nIBs{`/Ac
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//读取保存的下载信息(文件指针位置) NgH"jg-
private void read_nPos() *p)1c_
{ K& /
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try{ U)mg]o-VE
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); <tp\+v!u
int nCount = input.readInt(); =fy~-FN_
nStartPos = new long[nCount]; ,#;%ILF4%
nEndPos = new long[nCount]; _c|aRRW
for(int i=0;i<nStartPos.length;i++) "7Qc:<ww
{ O{WJi;l
nStartPos = input.readLong(); tu(k"'aJ
nEndPos = input.readLong(); haj\Dm
} G+Vlaa/7
input.close(); >(>Fx\z}
} 1%W|>M`
catch(IOException e){e.printStackTrace ();} j(JUOief
catch(Exception e){e.printStackTrace ();} D4jf%7X!Lu
} PP{2{
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private void processErrorCode(int nErrorCode) ZLK@x.=
{ )'\pa2
System.err.println("Error Code : " + nErrorCode); @H'pvFLK?
} pMJK?- )
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//停止文件下载 '&