/* vVL@K,q
**SiteFileFetch.java a')|1DnR
*/ ZY:[ekm%4Z
package NetFox; @^uH`mc
import java.io.*; ['ksP-=
import java.net.*; .; )l
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public class SiteFileFetch extends Thread { GtwT
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SiteInfoBean siteInfoBean = null; //文件信息Bean 8Dvazg}4
long[] nStartPos; //开始位置 IJ/sX_k
long[] nEndPos; //结束位置 5Vi>%5A>l
FileSplitterFetch[] fileSplitterFetch; //子线程对象 BATG FS&
long nFileLength; //文件长度 _!|/
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boolean bFirst = true; //是否第一次取文件 nJ"
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boolean bStop = false; //停止标志 M?;y\vS?.
File tmpFile; //文件下载的临时信息 sdS^e`S
DataOutputStream output; //输出到文件的输出流 ~xoF6CF
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) n#=o?!_4
public SiteFileFetch(SiteInfoBean bean) throws IOException 1 `KN]Nt
{ ]%!u7z|\6
siteInfoBean = bean; &hk-1y9QS
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ^gFqRbuS
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 1@lJonlF
if(tmpFile.exists ()) |`;54_f
{ O-4C+?V
bFirst = false; /6_|]ijc
read_nPos(); M|] "W
} L;od6<.*m
else kkK
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{ v
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nStartPos = new long[bean.getNSplitter()]; @'=Uq
nEndPos = new long[bean.getNSplitter()]; TFuR@KaBR
} EKp@9\XBC
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} Zo{$
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public void run() BAO| )~1Pd
{ $O^v]>h
//获得文件长度 #A8@CA^d
//分割文件 |$7vI&m
//实例FileSplitterFetch vaon{2/I
//启动FileSplitterFetch线程 $u/E\l
//等待子线程返回 @ps1Dr4s
try{ MJ=)v]a
if(bFirst) !|<=ZF2
{ R
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nFileLength = getFileSize(); 95<EN(oUD
if(nFileLength == -1) *]i!fzI']
{
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System.err.println("File Length is not known!"); W14Vm(`N
} >s` J5I!
else if(nFileLength == -2) ^`<w&I@
{ !cGDy/|
System.err.println("File is not access!"); 2c/Ys4/H4]
} |7#[ (%D!
else ?3O9eZY@
{ 4H+Ked&Oq
for(int i=0;i<nStartPos.length;i++) !p1qJ [
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); Qeu\&%C!<
} >><.3
for(int i=0;i<nEndPos.length-1;i++) \a+(=s(;
{ VAC iVKk
nEndPos = nStartPos[i+1]; .IJ_jt-^d
} 7u[j/l,
nEndPos[nEndPos.length-1] = nFileLength; ;=? ~
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} FW"^99mrnb
} s
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//启动子线程 F:#J:x'
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; =YG _z^'
for(int i=0;i<nStartPos.length;i++) 7#<c>~
{ %okzOKKX
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), CU7F5@+
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), VxzkQ}o
nStartPos,nEndPos,i); e:AHVepj{
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Ez{MU@Fk
fileSplitterFetch.start(); StI1){Wf
} K 0hu:1l)
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), [Ei1~n)o
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); GjB]KA^
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Kq.:G%
nEndPos = " + nFileLength); J1XL<7
// fileSplitterFetch[nPos.length-1].start(); 5b/ojr7
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//等待子线程结束 ,^8 MB.
//int count = 0; k-*Mzm]kb
//是否结束while循环 ouHu8)q'r
boolean breakWhile = false; ^2]LV6I
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while(!bStop) ~m*,mz
{ ] xd^% q*
write_nPos(); _8G>&K3T<
Utility.sleep(500); 6bBdIqGb}
breakWhile = true; D7"p}PD>~
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for(int i=0;i<nStartPos.length;i++) gK|R =J
{ -=698h*
if(!fileSplitterFetch.bDownOver) h.K(P+h
{ :c8n[+5
breakWhile = false; H6aM&r9}
break; A-CUv[pM
} $j)hNWI
} BGzI
if(breakWhile) r.0oxH']
break; _y .]3JNm
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//count++; Ri>?KrQF%
//if(count>4) H(Ms^8Vs~:
// siteStop(); +CM7C%U
} ~YCuO0t
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System.err.println("文件下载结束!"); g<\z= H
} b]gY~cbI8
catch(Exception e){e.printStackTrace ();} )R{UXk3q}
} .]Mn^2#j
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//获得文件长度 z 2/!m[U
public long getFileSize() ;LJ3c7$@lf
{ \Btk;ivg
int nFileLength = -1; > 8]j
try{ (foBp
URL url = new URL(siteInfoBean.getSSiteURL()); UBO^EVJ
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); :6;e\UE
httpConnection.setRequestProperty("User-Agent","NetFox"); !F!3Q4
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int responseCode=httpConnection.getResponseCode(); +yt6(7V*
if(responseCode>=400) TA}UY7v
{ rVAL|0;3
processErrorCode(responseCode); :XT?jdg
return -2; //-2 represent access is error POU}/e!Ua
} nq`q[KV:
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String sHeader; g8pm2o@S
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for(int i=1;;i++) h5@j`{
{ #w3ru6*W
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); r>qA $zD^
//Utility.log(in.readLine()); J me%
sHeader=httpConnection.getHeaderFieldKey(i); )wf\F6jN
if(sHeader!=null) V"d=.Hb>
{ .?#uxd~>
if(sHeader.equals("Content-Length")) P6?0r_Y
{ W$\X ~Q'0
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); (N U0Tw
break; &^ I+s^\=
} ^GXEJU7U
} dhR(_
else )bWrd$X
break; _C+DB A
} C*wdtEGq
} h$h]%y
catch(IOException e){e.printStackTrace ();} t;Wotfc[#0
catch(Exception e){e.printStackTrace ();} x%XT2+
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Utility.log(nFileLength); _Dq Qfc%
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return nFileLength; {fG|_+tl3o
} cgNt_8qC
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//保存下载信息(文件指针位置) Tt6{WDscZ
private void write_nPos() IrO+5 w
{ wA0eG@xi)
try{ (UW6F4:$
output = new DataOutputStream(new FileOutputStream(tmpFile)); me'(lQ6^
output.writeInt(nStartPos.length); uZ[/%GTX{)
for(int i=0;i<nStartPos.length;i++) dIK{MA
{ mmN|F$;r
// output.writeLong(nPos); )<LI%dQ:'l
output.writeLong(fileSplitterFetch.nStartPos); Nu.
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output.writeLong(fileSplitterFetch.nEndPos); rUFFF'm\*a
} .;%q/hP
output.close(); ?cBO6^
} PdM*5g4
catch(IOException e){e.printStackTrace ();} /W9
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catch(Exception e){e.printStackTrace ();} rU*q@y
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} t,?,F4j
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//读取保存的下载信息(文件指针位置) #O6
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private void read_nPos() nhT;b,G.Z
{ Gx;xj0-"
try{ Okoo(dfM
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ,7I},sZj
int nCount = input.readInt(); 4zX=3iBt
nStartPos = new long[nCount]; \AJS,QD
nEndPos = new long[nCount]; y*(_\\
for(int i=0;i<nStartPos.length;i++) wEK%T P4
{ z1}1*F"
nStartPos = input.readLong(); )DRkS,I
nEndPos = input.readLong(); R%W@~o\p]
} ,M{Q}:$+4
input.close(); W1<