/* "2sk1
**SiteFileFetch.java B,w
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*/ (?JdiY/
package NetFox;
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import java.io.*; X~JP
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import java.net.*; <EN9s
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public class SiteFileFetch extends Thread { xLOQu.
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SiteInfoBean siteInfoBean = null; //文件信息Bean Y-YuY
long[] nStartPos; //开始位置 gC/ e]7FNr
long[] nEndPos; //结束位置 bG@2f"
FileSplitterFetch[] fileSplitterFetch; //子线程对象 TSsZzsdr2
long nFileLength; //文件长度 $Emu*'
boolean bFirst = true; //是否第一次取文件 Dpw*m.f
boolean bStop = false; //停止标志 f6`GU$H
File tmpFile; //文件下载的临时信息 U{hu7
DataOutputStream output; //输出到文件的输出流 Op?"G
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) +W*~=*h|
public SiteFileFetch(SiteInfoBean bean) throws IOException HRDpFMA/~
{ G,|!&=Pe|E
siteInfoBean = bean; p,$N-22a
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); &EQhk9j
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); tULGfvp
if(tmpFile.exists ()) ~!r;?38V`
{ 4Qfsxg
bFirst = false; `/P/2{,~
read_nPos(); &o;0%QgF
} Ms(xQ[#+
else .=#jdc/
{ $Xu3s~:S
nStartPos = new long[bean.getNSplitter()]; L4g%o9G
nEndPos = new long[bean.getNSplitter()]; gtA34iw
} +ZOiL[rS
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} GYaP"3Lu
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public void run() ]19VEH
{ ?W'p&(;
//获得文件长度 &oS$<
//分割文件 m,E$KHt (
//实例FileSplitterFetch p%"dYH%]&0
//启动FileSplitterFetch线程 tUJRNEg
//等待子线程返回 5XZ!yYB?
try{ F`nQS&y
if(bFirst) }6c>BU}DF
{ d qn5G!fI
nFileLength = getFileSize(); MePD:;mm^
if(nFileLength == -1) 37/n"\4
{ c~Ka) dF|
System.err.println("File Length is not known!"); 85GIEUvH/
} \WCQ>c?~
else if(nFileLength == -2) )#}>,,S
{ NXY jb(4:
System.err.println("File is not access!"); _95296
} M<fhQJ
else PLyity-L[7
{ K T}
for(int i=0;i<nStartPos.length;i++) R2~Tr$:
{ `C+<!)2
nStartPos = (long)(i*(nFileLength/nStartPos.length)); kz"uTJK
} qos7u91z
for(int i=0;i<nEndPos.length-1;i++) afEa@et'
{ Z'JS@dV
nEndPos = nStartPos[i+1]; =?fz-HB
} 9t"Rw ns
nEndPos[nEndPos.length-1] = nFileLength; IU%|K~_n
} W(s4R,j
} iq(PC3e`V
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//启动子线程 }{o!
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; e#(Ck{e
for(int i=0;i<nStartPos.length;i++) o\IMYT
{ %qP[+N&
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), c3A\~tHW
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), m~ tvuz I
nStartPos,nEndPos,i); >H2`4]4]
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); n|SV)92o1
fileSplitterFetch.start(); ;;Q^/rkC
} 1j<(?MT-
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 6o3
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); O !L`0
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// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ':'g!b`/
nEndPos = " + nFileLength); 'X`Z1L/
// fileSplitterFetch[nPos.length-1].start(); *z=_sD?1
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//等待子线程结束 RgE`H r
//int count = 0; woYD &Oml
//是否结束while循环 l\HdB"nT
boolean breakWhile = false; R?2sbK4Cz
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while(!bStop) [m
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{ .J"N}
write_nPos(); 1^p/#jt
Utility.sleep(500); E h%61/
breakWhile = true; d"$8-_K
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for(int i=0;i<nStartPos.length;i++) pMc6p0
{ N+-Tp&:wY
if(!fileSplitterFetch.bDownOver) DHidI\*gT
{ LSo!_tY
breakWhile = false; X'9.fKp
break; z`y9<+
} +jN}d=N-
} x%P|T3Qy5
if(breakWhile) ?0tg}0|
break; bdUPo+
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//count++; G4&s_M$
//if(count>4) 3P>gDQP
// siteStop(); r );R/)&
} J(
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System.err.println("文件下载结束!"); \/-c)
} <G"cgN#]
catch(Exception e){e.printStackTrace ();} ]n ?x tI
} A=CeeC]}
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//获得文件长度 _Fb}zPU!
public long getFileSize() b^Hrzn
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int nFileLength = -1; B(
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try{ vL/ 3(Bo7
URL url = new URL(siteInfoBean.getSSiteURL()); ^}3^|jF
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); a(Y'C`x
httpConnection.setRequestProperty("User-Agent","NetFox"); -F[8ZiZ
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int responseCode=httpConnection.getResponseCode(); wak 26W>I3
if(responseCode>=400) \?bV\/GBR
{ St=nf\P&F
processErrorCode(responseCode); R^Rc!G}
return -2; //-2 represent access is error >hKsj{=R7
} y48]|%73
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String sHeader; <Ij!x`MS+
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for(int i=1;;i++) D6SUzI1+H
{ 2 a<\4w'
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Z\$HgG
//Utility.log(in.readLine()); |9@,ri\'Rg
sHeader=httpConnection.getHeaderFieldKey(i); (1/Sf&2i
if(sHeader!=null) 8K8u|]i
{ # @\3{;{R
if(sHeader.equals("Content-Length")) ` Xc7b
{ ;5a$OM
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 9O[IR)O~
break; !3Dq)ebBz
} {sTf4S\S
} lR(9;3
else e8a^"Z`a
break; Q
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} 1-RY5R}VR
} F?L]Dff
catch(IOException e){e.printStackTrace ();} u09Tlqh0 3
catch(Exception e){e.printStackTrace ();} _h%Jf{nu
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Utility.log(nFileLength); I2}W /}
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return nFileLength; OM'iJB6=
} iUKjCq02
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//保存下载信息(文件指针位置) 1N5
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private void write_nPos() +Z#=z,.^
{ SH*'<
try{ o.s'0xP]
output = new DataOutputStream(new FileOutputStream(tmpFile)); $-_" SWG.
output.writeInt(nStartPos.length); >}k*!J|
for(int i=0;i<nStartPos.length;i++) cIug~ x>
{ {uDW<