/* Wz}DC7
**SiteFileFetch.java r?^[o
*/ N!O.=>8<
package NetFox;
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import java.io.*; BK,h$z7#6
import java.net.*; i:8g3|JfMe
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public class SiteFileFetch extends Thread { H)#HK!F6f
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SiteInfoBean siteInfoBean = null; //文件信息Bean \?n4d#=$o
long[] nStartPos; //开始位置 P(H,_7 4
long[] nEndPos; //结束位置 _FV<[x,nE8
FileSplitterFetch[] fileSplitterFetch; //子线程对象 )`Zj:^bz9
long nFileLength; //文件长度 Jxyeh1zqB
boolean bFirst = true; //是否第一次取文件 w QV4[
boolean bStop = false; //停止标志 Ww(($e!
File tmpFile; //文件下载的临时信息 @|yRo8|
DataOutputStream output; //输出到文件的输出流 8&q|*/2
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) F_KPhe$
public SiteFileFetch(SiteInfoBean bean) throws IOException j2oHwt6"
{ 3Zy $NsY3
siteInfoBean = bean; m53XN
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); HH_w!_f
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); P F#X8+&J
if(tmpFile.exists ()) (``EBEn
{ -N'xQ(#n3q
bFirst = false; \FVm_)
read_nPos(); o;.6Y `-fJ
} x 6=Yt{
else z5~{WAAI
{ <:v2N/i
nStartPos = new long[bean.getNSplitter()]; [A@K)A$f
nEndPos = new long[bean.getNSplitter()]; 3Thb0\<"
} #w2;n@7;X
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} ym>>5 (bni
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public void run() ~g&FeMo
{ -!X,MDO
//获得文件长度 T6
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//分割文件 os=Pr{
//实例FileSplitterFetch -,;r %7T
//启动FileSplitterFetch线程 &C_0JyT
//等待子线程返回 U g'y
try{ wi{qN___
if(bFirst) yrp;G_
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nFileLength = getFileSize(); s)?=4zJ
if(nFileLength == -1) J;?#Zt]`L
{ SV-M8Im73z
System.err.println("File Length is not known!"); QG~4<zy
} egOZ.oV
else if(nFileLength == -2) 1M%'Xe7
{ zn5U(>=c
System.err.println("File is not access!"); P[;<,U;'HO
} Q> Lh.U,{
else F*&A=@/3
{ D1Yc_
for(int i=0;i<nStartPos.length;i++) fSe$w#*I
{ -\Y"MwIED
nStartPos = (long)(i*(nFileLength/nStartPos.length)); O<A$,<6 7
} Qktj
for(int i=0;i<nEndPos.length-1;i++) $d<vPpJ3
{ Ek0zFnb[Gx
nEndPos = nStartPos[i+1]; QKj8~l(
} dNQR<v\IL
nEndPos[nEndPos.length-1] = nFileLength; (k{rn3,
} ~Y-
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} s7x&x;-
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//启动子线程 XkG:1H;Q%
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ZGstD2N$
for(int i=0;i<nStartPos.length;i++) 'N-nFc^
{ %Tc P[<
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Td7f
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ;7Hse^Oc
nStartPos,nEndPos,i); d0@&2hO
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); =}bDT2Nb
fileSplitterFetch.start(); jRk"#:
} Bz&6kRPv
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), >8I?YT.
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); X/=*o;":
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", d&!;uzOx
nEndPos = " + nFileLength); ,BUDo9h
// fileSplitterFetch[nPos.length-1].start(); WFl, u!"A
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//等待子线程结束 =5a|'O
//int count = 0; V^n?0^o
//是否结束while循环 qDMVZb-(#
boolean breakWhile = false; L7~9u|7a#
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while(!bStop) S;!l"1[;
{ byT@O:f L
write_nPos(); z0@{5e$#Y
Utility.sleep(500); oWJ0>)
breakWhile = true; /QA:`_</oh
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for(int i=0;i<nStartPos.length;i++) $#b@b[h<w
{ :\]TAQd-
if(!fileSplitterFetch.bDownOver) T^"-;
{ Ukf4Q\@w
breakWhile = false; X?2ub/Nr#Y
break; qy]tuKZI
} %OI4}!z@l
} !$q *~F"S
if(breakWhile) cO&(&*J r
break; 4,nUCT
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//count++; ~9[^abz
//if(count>4) 5:oteNc3
// siteStop(); cph&\
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} SFj:|S=v6j
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System.err.println("文件下载结束!"); -&AgjzN!
} 12D>~#J
catch(Exception e){e.printStackTrace ();} hd~3I4D
} u$vA9g4
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//获得文件长度 vpnOc2 -
public long getFileSize() +7`7cOqXg
{ '@jP$6T&
int nFileLength = -1; D-v}@tS'
try{ jcC"SqL
URL url = new URL(siteInfoBean.getSSiteURL()); uR;m<wPH,f
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); d*M:PjG@
httpConnection.setRequestProperty("User-Agent","NetFox"); C(4r>TNm
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int responseCode=httpConnection.getResponseCode(); vs*Q {
if(responseCode>=400) ##_`)/t,
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processErrorCode(responseCode); V2v}F=
return -2; //-2 represent access is error j'2:z#
} s-S#qGZ
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String sHeader; 3 P)N,
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for(int i=1;;i++) <i!:{'%
{
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); BEfP#h=hr
//Utility.log(in.readLine()); L/39<&W
sHeader=httpConnection.getHeaderFieldKey(i); 'yIz<o
if(sHeader!=null) A9 D vU)1
{ `A\|qH5`W
if(sHeader.equals("Content-Length")) h#e((j3-2Z
{ }$5e!t_K
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); \DgWp:|
break; gq:2`W&5
} kuQ+MQHs
} hFLLg|@
else aRc2#:~;
break; @hz~9AII9
} /'g/yBY
} :S_3(/} \
catch(IOException e){e.printStackTrace ();} z:Q4E|IX
catch(Exception e){e.printStackTrace ();} +|iJQF
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Utility.log(nFileLength); #mFY?Zp)
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return nFileLength; /XeCJxo8
} ws_/F
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//保存下载信息(文件指针位置) 2Nau]y]=
private void write_nPos() $+%eLx*
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try{ )W0zu\fL =
output = new DataOutputStream(new FileOutputStream(tmpFile)); =KCAHNr4?
output.writeInt(nStartPos.length); xO` `X<
for(int i=0;i<nStartPos.length;i++) K'DRX85F
{ Iu=n$H
// output.writeLong(nPos); FL8?<bU
output.writeLong(fileSplitterFetch.nStartPos); ]K^#'[
output.writeLong(fileSplitterFetch.nEndPos); ?T (@<