/* P+=m.
**SiteFileFetch.java ,II3b(l
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package NetFox; \P")Eh =d
import java.io.*; V)l:fUm2
import java.net.*; [`s0 L#
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public class SiteFileFetch extends Thread { @0]WMI9B"B
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SiteInfoBean siteInfoBean = null; //文件信息Bean w52py7
long[] nStartPos; //开始位置 l#%7BGwzY
long[] nEndPos; //结束位置 'O\ y7"a
FileSplitterFetch[] fileSplitterFetch; //子线程对象 "qd|!:bE
long nFileLength; //文件长度 gPb.%^p
boolean bFirst = true; //是否第一次取文件 >3@3~F%xAX
boolean bStop = false; //停止标志 jT}={[9b
File tmpFile; //文件下载的临时信息 MtaGv#mJ
DataOutputStream output; //输出到文件的输出流 8>Cf}TvErx
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 9}m?E<6&
public SiteFileFetch(SiteInfoBean bean) throws IOException GBT|1c'i
{ !|UX4
siteInfoBean = bean; X^K^az&L
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); {-8Nq`w
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 'Grii,
if(tmpFile.exists ()) ge:a{L
{ &)gc{(4$
bFirst = false; Z\xnPhV
read_nPos(); *OznZIn
} BAY e:0
else I`H&b&
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nStartPos = new long[bean.getNSplitter()]; )$bF*
nEndPos = new long[bean.getNSplitter()]; BV:Ca34&
} BQ)>}YHk
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public void run() {H)hoAenA
{ {+=hYB|&
//获得文件长度 Z,e|L4&
//分割文件 R54ae:8
//实例FileSplitterFetch I;%1xdPt
//启动FileSplitterFetch线程 l nHY?y7{
//等待子线程返回 peBHZJ``RX
try{ >Zs!
if(bFirst) ;Vs2e
{ ,;Wm>V)o
nFileLength = getFileSize(); `bfUP s
if(nFileLength == -1) G<D8a2q
{ hTzj{}w
System.err.println("File Length is not known!"); R[j? \#
} (${ #l
else if(nFileLength == -2) &K[sb%
{ *$BUow/>
System.err.println("File is not access!"); _.Hj:nFHz
} `;+x\0@<
else kSzap+ nB?
{ GEF's#YWK
for(int i=0;i<nStartPos.length;i++) G3io!XM)D
{ /MY's&D(
nStartPos = (long)(i*(nFileLength/nStartPos.length)); $"W[e"Q
} {$hWz (
for(int i=0;i<nEndPos.length-1;i++) nPdkvs
{ zGR,}v%%
nEndPos = nStartPos[i+1]; -dA9x~o
} ">CRFee0
nEndPos[nEndPos.length-1] = nFileLength; eyJWFJh
} gv>DOez/
} jVd`J
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//启动子线程 V 97ORI
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; Mf#@8"l
for(int i=0;i<nStartPos.length;i++) 1F,U^O
{ oo\^}jb
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 5=I({=/>
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), e'A_4;~@s
nStartPos,nEndPos,i); BInSS*L
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Lv['/!DJ|
fileSplitterFetch.start(); [|oG}'Xz
} 1C{0 R.
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Si]?4:E7=
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 7*+CX
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", M$%ON>Kq
nEndPos = " + nFileLength); [mu8V+8@d4
// fileSplitterFetch[nPos.length-1].start(); #$xtUCqX
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//等待子线程结束 :38h)9>RK
//int count = 0; 5?SE?VC=t
//是否结束while循环 b4cTn 6
boolean breakWhile = false; 7>y]uT@ar
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while(!bStop) H`)eT6:|/
{ ocWl]h].
write_nPos(); a<q9~QS
Utility.sleep(500); >IrQhSF
breakWhile = true; 7;q0'_G
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for(int i=0;i<nStartPos.length;i++) p-{ 4 $W
{ F\xIVY
if(!fileSplitterFetch.bDownOver) S1Y,5,}
{ T$"~Vu
breakWhile = false; fYy w2"
break; Mb2a;s
} z@3gNY&7.8
} -d'FKOD
if(breakWhile) !9PAfi?
break; .8^mA1fmX
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//count++; _lk VT']
//if(count>4) 1a(\F7
// siteStop(); 2~f*o^%l
} KPO w
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System.err.println("文件下载结束!"); N.q~\sF^
} ?wG
catch(Exception e){e.printStackTrace ();} i
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} ,Ohhl`q(
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//获得文件长度 @NA+Ma{N
public long getFileSize() vc|tp_M67
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int nFileLength = -1; 6
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try{ }C_g;7*
URL url = new URL(siteInfoBean.getSSiteURL()); f\cTd/?Ju
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 1$03:ve1
httpConnection.setRequestProperty("User-Agent","NetFox"); J' P:SC1
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int responseCode=httpConnection.getResponseCode(); TxK
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if(responseCode>=400) ~3j+hN8<
{ oCOv
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processErrorCode(responseCode); 5l8F.LtO\
return -2; //-2 represent access is error 4'#=_J
} 6O{QmB0KK
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String sHeader; D? %*L
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for(int i=1;;i++) jRC{8^98
{ qpe9?`vVX
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); oQ]FyV
//Utility.log(in.readLine()); )?SF IQ=
sHeader=httpConnection.getHeaderFieldKey(i); q!0HsF
if(sHeader!=null) &77J,\C$:
{ w,j!%N
if(sHeader.equals("Content-Length")) n^;-&
{ {ObY1Y`ea
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); }rmr0Bh
break; OXM=@B<"
} S;Sy.Lp
} lH_pG ~
else ;q9Y%*
break; {=
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} n
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} `Z>=5:+G@2
catch(IOException e){e.printStackTrace ();} F%y#)53g
catch(Exception e){e.printStackTrace ();} 81|[Y'f
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Utility.log(nFileLength); I/St=-;
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return nFileLength; IxWi>8
} *y<eK0
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//保存下载信息(文件指针位置) .{t5_,P
private void write_nPos() jNX6Ct?
{ W7|nc,i0\
try{ _X?_|!;J
output = new DataOutputStream(new FileOutputStream(tmpFile)); [^a7l$fmi
output.writeInt(nStartPos.length); 8u)>o*
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for(int i=0;i<nStartPos.length;i++) k8n9zJ8
{ sSKD"
// output.writeLong(nPos); )UU`uzU;u
output.writeLong(fileSplitterFetch.nStartPos); B=W#eu
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output.writeLong(fileSplitterFetch.nEndPos); 8hww({S2
} 30I-E._F
output.close(); u8?$W%eW
} g ;
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catch(IOException e){e.printStackTrace ();} 9
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catch(Exception e){e.printStackTrace ();} Da[#X`Kp$
} Y]6dYq{k
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//读取保存的下载信息(文件指针位置) L:&