/* I:iMRvp
**SiteFileFetch.java vuPNru" 2
*/ EZ .3Z`
package NetFox; )S%t)}
import java.io.*; iBAP,cR?`
import java.net.*; z``wqK
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public class SiteFileFetch extends Thread { dREY m}1
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SiteInfoBean siteInfoBean = null; //文件信息Bean q/U-6A[0
long[] nStartPos; //开始位置 jW`JThoq
long[] nEndPos; //结束位置 Cn3_D
FileSplitterFetch[] fileSplitterFetch; //子线程对象
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long nFileLength; //文件长度 f;
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boolean bFirst = true; //是否第一次取文件 zZCRej
boolean bStop = false; //停止标志 xt5/`C
File tmpFile; //文件下载的临时信息 `T[@ -
DataOutputStream output; //输出到文件的输出流 R\3a Sx L
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) }psRgF
public SiteFileFetch(SiteInfoBean bean) throws IOException e9KD mX_
{ YP_L~zZ
siteInfoBean = bean; X%5eZ"1{x
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); H/*ol^X7
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Tl2t\z+ps
if(tmpFile.exists ()) )/::i
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bFirst = false; +_i{4Iz~p
read_nPos(); +n;nvf}(
} @h{|tP%"
else 43AzNXWF8
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nStartPos = new long[bean.getNSplitter()]; OY`B{jV-
nEndPos = new long[bean.getNSplitter()]; TsaQR2J@
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}
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public void run() `sCaGCp
{ t
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//获得文件长度 V[nPTYO4
//分割文件 RtMI[
//实例FileSplitterFetch v<!S_7h
//启动FileSplitterFetch线程 kKSGC?d
//等待子线程返回 xGwImF$r
try{ BUBx}dbCM
if(bFirst) eTS}-
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nFileLength = getFileSize(); ^r\rpSN
if(nFileLength == -1) JkAM:,^(
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System.err.println("File Length is not known!"); 13!@LbC
} }~I!'J#)
else if(nFileLength == -2) lln"c
{ z5fE<=<X_W
System.err.println("File is not access!"); njy2pDC@
} :jl*Y-mM
else {]R'U/
{
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for(int i=0;i<nStartPos.length;i++) nTqU~'d'
{ CjQO5
nStartPos = (long)(i*(nFileLength/nStartPos.length)); [b3!H{b#
} \#9LwC"8;
for(int i=0;i<nEndPos.length-1;i++) MuY:(zC%
{ %PYl
nEndPos = nStartPos[i+1]; crM5&L9zF
} 4!Js="
nEndPos[nEndPos.length-1] = nFileLength; %hnBpz
} r<+C,h;aww
} a+^`+p/5
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//启动子线程 !LN8=u.
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; jfxNV2[
for(int i=0;i<nStartPos.length;i++) wX"hUu
{ 4qOzjEQ
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), !wy _3a
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), i<Vc~!pT
nStartPos,nEndPos,i); n N<N~
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); t/iI!}
fileSplitterFetch.start(); b&z#ZY
} lYx_8x2
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Zo3!Hs ZA
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); a$My6Qa#
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", bBjr hi
nEndPos = " + nFileLength); A>@#eyB
// fileSplitterFetch[nPos.length-1].start(); ]ZY2\'
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//等待子线程结束 JmI%7bH@
//int count = 0; }
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//是否结束while循环 Ww]$zd-bo
boolean breakWhile = false; rQjk
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while(!bStop) HbKE;N
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write_nPos(); hhTtxC<:
Utility.sleep(500); E=s h^Q(A
breakWhile = true; TjW!-s?S
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for(int i=0;i<nStartPos.length;i++) !m@cTB7i
{ fzSkl`K}
if(!fileSplitterFetch.bDownOver) /7AHd ;
{ MpCPY"WLL
breakWhile = false; nQF&^1n
break; Qd}n4KF\
} @Kpm&vd(
} ;vH2r~
if(breakWhile) c+:ZmrP/
break; .hT>a<
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//count++; 1b5Z^a<u
//if(count>4) &tyS 6S+
// siteStop(); (t4i&7-
} Oyl~j#h
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System.err.println("文件下载结束!"); [EAOk=X
} _jQ:9,;
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catch(Exception e){e.printStackTrace ();} iM]O
} L AQ@y-K3
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//获得文件长度 d<m;Q}/l&h
public long getFileSize() CNB
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{ I,?NYIG"(
int nFileLength = -1; m06'T2 I
try{ VI!
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URL url = new URL(siteInfoBean.getSSiteURL()); 9[eiN
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); bxXpw&
httpConnection.setRequestProperty("User-Agent","NetFox"); GkAd"<B
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int responseCode=httpConnection.getResponseCode(); UTA|Ps$
if(responseCode>=400) { 53FR
{ H=/1d.p
processErrorCode(responseCode); Hv/C40uM-
return -2; //-2 represent access is error eR!#1ar
} JYdb^j2c
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String sHeader; 1iT_mtXK$
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for(int i=1;;i++) Pf;OYWST
{ MK#
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 9ihg[k
//Utility.log(in.readLine()); gwj?.7N*k
sHeader=httpConnection.getHeaderFieldKey(i); 8lF9LZ8
if(sHeader!=null) }QE.|.fA1
{ ;}B=g/C
if(sHeader.equals("Content-Length")) "*lx9bvV_
{ ZU\$x<,
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); Kzev] er
break; ,:S#gN{U
} F/v.hP_
} (:iMs)
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else \mb4leg5
break; c &c
} 8lk/*/} =<
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catch(IOException e){e.printStackTrace ();} P]+B}))
catch(Exception e){e.printStackTrace ();} `,O7S9]R+
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Utility.log(nFileLength); =ejcP&-V/
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return nFileLength; 6~dAK3v5
} O"\4[HE^
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//保存下载信息(文件指针位置) _`2%)#^o
private void write_nPos() :!i=g+e]
{ cS.@02~f"
try{ g~<[;6&