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**SiteFileFetch.java fs2mN1
*/ XPHQAo[(s
package NetFox; r.^0!(d
import java.io.*; PtQQZ"ept
import java.net.*; k%EWkM)?
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public class SiteFileFetch extends Thread { L
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SiteInfoBean siteInfoBean = null; //文件信息Bean Q `e~MD
long[] nStartPos; //开始位置 >:w?qEaE
long[] nEndPos; //结束位置 c8^+^.=pX
FileSplitterFetch[] fileSplitterFetch; //子线程对象 tyc8{t#Z
long nFileLength; //文件长度 WW@JVZxK
boolean bFirst = true; //是否第一次取文件 MxM](ew~7
boolean bStop = false; //停止标志 |Hx%f
File tmpFile; //文件下载的临时信息 =8$|_
DataOutputStream output; //输出到文件的输出流 m.1LxM$8
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) x2
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public SiteFileFetch(SiteInfoBean bean) throws IOException 07.nq;/R
{ aqcFY8b
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siteInfoBean = bean; "-G&=(
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); u/z,92mmS
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); P_,v5Qx"-
if(tmpFile.exists ()) ??|d=4g\
{ Ivz+Jjw
bFirst = false; J}x>~?W
read_nPos(); 4^
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} x1|Da$2
else [Xxw]C6\>(
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nStartPos = new long[bean.getNSplitter()]; e(?:g@]-r
nEndPos = new long[bean.getNSplitter()]; 6?53q e
} |$YyjYK
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} ,]0S4h67
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public void run() Oamv9RyDvC
{ 4 hL`=[AB
//获得文件长度 zt7_r`#z
//分割文件 hNH.G(l0
//实例FileSplitterFetch x7vq?fP0n
//启动FileSplitterFetch线程 XxmJP5
//等待子线程返回 "nVK< V d
try{ aXRv}WO$>k
if(bFirst) +n@f'a">
{ /)sDnJ1r
nFileLength = getFileSize(); *
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if(nFileLength == -1) zl0;84:H
{ t[%x}0FP-F
System.err.println("File Length is not known!"); zx
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} q]F4Lq(
else if(nFileLength == -2) 6kP7
{ &foD&
System.err.println("File is not access!"); %p<$|'
} (F/HU"C
else P;j&kuW|zL
{ :lgHL3yl
for(int i=0;i<nStartPos.length;i++) EC<5M5Lc
{ q_-ma_F#s
nStartPos = (long)(i*(nFileLength/nStartPos.length)); -<8B,
} ]PeLcB
for(int i=0;i<nEndPos.length-1;i++) ZH\0=l)
{ yPSVwe|g
nEndPos = nStartPos[i+1]; 66/Z\H^d
} E^7C
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nEndPos[nEndPos.length-1] = nFileLength; DP|TIt ,Rl
} "]v
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} I%SuT7"Do
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//启动子线程 l+t #"3
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; JRD8Lz]Q3
for(int i=0;i<nStartPos.length;i++) UMT\Q6p
{ k}X[u8A
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), U9x4j_.q
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), pfR"s:#
nStartPos,nEndPos,i); +e U`H[iu
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ?2/uSG|
fileSplitterFetch.start(); *nLIXnm
} v5B"
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// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), R|-6o)$
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Sc$gnUYD{
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", q1H~
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nEndPos = " + nFileLength); 9t#P~>:jY}
// fileSplitterFetch[nPos.length-1].start(); FQ U\0<5
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//等待子线程结束 mU50pM~/i
//int count = 0; ]+mjOks~
//是否结束while循环 r)Or\HL
boolean breakWhile = false; WPtMds4
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while(!bStop) -H`\?
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{ ]\7lbLv
write_nPos(); X R4 )z
Utility.sleep(500); [$^A@bqk
breakWhile = true; Np$z%ewK.
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for(int i=0;i<nStartPos.length;i++) ^/k,
{ R'L?Xn}3
if(!fileSplitterFetch.bDownOver) *
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{ #Gd7M3
breakWhile = false; B=r0?%DX"1
break; TiQ^}5~M
} lw s(/a*c
} {$0&R$v3
if(breakWhile) !Qcir&]C>
break; ]dq5hkjpU
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//count++; wDMjk2YN
//if(count>4) Ssw&'B|o
// siteStop(); +tIz[+u
} Nl
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System.err.println("文件下载结束!"); o*-9J2V=J
} -3` "E%9
catch(Exception e){e.printStackTrace ();} La9r
} a&C.=
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//获得文件长度 '#A:.P
public long getFileSize() Xk?R mU6
{ qcYNtEs*c
int nFileLength = -1; y+A{Y
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URL url = new URL(siteInfoBean.getSSiteURL()); c yP,[?N
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); H'Ln
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httpConnection.setRequestProperty("User-Agent","NetFox"); 8bt53ta
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int responseCode=httpConnection.getResponseCode(); ;gUXvx~~r
if(responseCode>=400) 8 aZ$5^z
{ Pxqiv9D<R
processErrorCode(responseCode); =-Nsc1&
return -2; //-2 represent access is error ~,gLplpG0
} HxZ.OZbR
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String sHeader; (i]Z|@|)
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for(int i=1;;i++) &{ ZSE^
{ 4jGLAor|
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); U(*yL-
//Utility.log(in.readLine()); csDQva\
sHeader=httpConnection.getHeaderFieldKey(i); w12}Rn8
if(sHeader!=null) m2 O&2[g
{ Pw{"_g
if(sHeader.equals("Content-Length")) krjN7&
{ @1g&Z}L
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 4H-j
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break; kYlg4 .~M
} oRq3 pO}f
} .,M;huRg
else L M
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break;
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} /H)Br~ l
} {cR=N~_EO
catch(IOException e){e.printStackTrace ();} Rh<N);Sl7
catch(Exception e){e.printStackTrace ();} +c) TDH
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Utility.log(nFileLength); mxp Y&Y
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return nFileLength; 8W -@N
} xA #H0?a]
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//保存下载信息(文件指针位置) k ZxW"2
private void write_nPos() k>5 O`Y:
{ ;LQ9#M?
try{ CGZ^hoh/
output = new DataOutputStream(new FileOutputStream(tmpFile)); opD-vDa h
output.writeInt(nStartPos.length); bX2"89{
for(int i=0;i<nStartPos.length;i++) 74f9|~%
{ ARWZ; GX
// output.writeLong(nPos); *
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output.writeLong(fileSplitterFetch.nStartPos); %4,?kh``D
output.writeLong(fileSplitterFetch.nEndPos); HnU Et/
} d~Mg
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output.close(); i_ QcC
} 78]gtJ
catch(IOException e){e.printStackTrace ();} JJnYOau
catch(Exception e){e.printStackTrace ();} jg_n 7
} @Y-TOCadT
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//读取保存的下载信息(文件指针位置) l r~gG3
private void read_nPos() hs(W;tR@W
{ ; LMWNy4
try{ c1%rV`)]
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); _| zBUrN
int nCount = input.readInt(); 62\&RRB
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nStartPos = new long[nCount]; XYfv(y
nEndPos = new long[nCount]; %|+E48
for(int i=0;i<nStartPos.length;i++) PJ
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{ LchnBtjn
nStartPos = input.readLong(); v}[dnG
nEndPos = input.readLong(); ZnfNQl[
} n7l%gA*
input.close(); d,9`<1{9
} cdTsRS;E
catch(IOException e){e.printStackTrace ();} YI@Fhr
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catch(Exception e){e.printStackTrace ();} JhX=l-?
} OYmi?y\
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private void processErrorCode(int nErrorCode) FWY2s(5p
{ IIz0m3';+
System.err.println("Error Code : " + nErrorCode); }roG(
} AK-}V4C/A
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//停止文件下载 <Q5Le dN
public void siteStop() =6T
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{ Cifd21v4
bStop = true; I%lE;'x
for(int i=0;i<nStartPos.length;i++) -]S.<8<$
fileSplitterFetch.splitterStop(); G>z,#Xt
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} ig_2={Q@
} ;[$n=VX`
//负责部分文件的抓取 -<f;l_(
**FileSplitterFetch.java n$["z
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*/ %y<]Yzv.
package NetFox; jirbUl
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import java.io.*; ux-CpI
import java.net.*; ~<9{#uM
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public class FileSplitterFetch extends Thread { tE"Si<[]H$
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String sURL; //File URL Vpp&