/* H}U&=w'
**SiteFileFetch.java ;m`I}h<
*/ e#zGLxa
package NetFox; S0yPg9v
import java.io.*; erqm=)
import java.net.*; (nE$};c<b2
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public class SiteFileFetch extends Thread { U;jk+i
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SiteInfoBean siteInfoBean = null; //文件信息Bean }`_2fJ6
long[] nStartPos; //开始位置 "lz!'~im
long[] nEndPos; //结束位置 yTDoS|B+)
FileSplitterFetch[] fileSplitterFetch; //子线程对象 "(C}Dn#
long nFileLength; //文件长度 e<C5}#wt
boolean bFirst = true; //是否第一次取文件 /FYa{.Vlr
boolean bStop = false; //停止标志 qp{NRNkQ
File tmpFile; //文件下载的临时信息 rg'? ?rq
DataOutputStream output; //输出到文件的输出流 Pc(2'r@#
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) CZa9hsM
public SiteFileFetch(SiteInfoBean bean) throws IOException p}Gk|Kjlq,
{ '[juPI(!
siteInfoBean = bean; d3{Zhn@
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); be764do
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Eui;2P~
if(tmpFile.exists ()) 3p^WTQ>(
{ d&ZwVF!
bFirst = false; `r]Cd
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read_nPos(); {(tE pr
} T@RzY2tz
else @DUdgPA
{ *e8V4P
nStartPos = new long[bean.getNSplitter()]; {T^'&W>8G8
nEndPos = new long[bean.getNSplitter()]; FF_$)%YUp
} 6Nl$&jL
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public void run() wR4P0[
{ 1mjv~W
//获得文件长度 9|e"n|[
//分割文件 _*;cwMne-
//实例FileSplitterFetch >WD^)W fa
//启动FileSplitterFetch线程 I{Kc{MXn
//等待子线程返回 z)]EB6uRg
try{ Ke/P[fo
if(bFirst) @qe>ph[UA
{ )RkU='lB "
nFileLength = getFileSize(); PIr Uls0}
if(nFileLength == -1) Q72wg~% w
{ ^Qr
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System.err.println("File Length is not known!"); cPN7^*
} yf8UfB#a
else if(nFileLength == -2) T4#knSIlh
{ 1uH\Bn]p?
System.err.println("File is not access!"); I|ULf
} G|MDo|q]
else +
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for(int i=0;i<nStartPos.length;i++) 2+P3Sii
{ Mb9q<4
nStartPos = (long)(i*(nFileLength/nStartPos.length)); /Z% ?;
} k}O|4*.BT
for(int i=0;i<nEndPos.length-1;i++) 9D|
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{ #0P<#S^7
nEndPos = nStartPos[i+1]; 5\'%zZ, l
} +Va?wAnr
nEndPos[nEndPos.length-1] = nFileLength; g 764wl
} WR-C_1-pT
} FvNO*'xP
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//启动子线程 >4VU
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; !'gz&3B~h
for(int i=0;i<nStartPos.length;i++) "''<:K|
{ m0*
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Y5NbY02E
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), b{ozt\: M
nStartPos,nEndPos,i); ."^dJ |fN
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); _Pz3QsV9
fileSplitterFetch.start(); j(BS;J$i
} |HU
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// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ]q3Kd{B
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 7E5Dz7
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", T7T!v
nEndPos = " + nFileLength); <F3sQAe
// fileSplitterFetch[nPos.length-1].start(); 2at?9{b
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//等待子线程结束 X|QCa@Foe
//int count = 0; UbibGa=
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//是否结束while循环 9j2I6lGQ
boolean breakWhile = false; b c4x"]!
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while(!bStop) 8 (KfX%
{ ~76.S
write_nPos(); t?
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Utility.sleep(500); y;Zfz~z
breakWhile = true; mce`1Tjw
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for(int i=0;i<nStartPos.length;i++) mc+wRx
{ g
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if(!fileSplitterFetch.bDownOver) bGi_",
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{ !bcbzg2d&
breakWhile = false; bZ9NnSuH
break; F=om^6G%X5
} 5Hm!5:ZB
} {^kG<v.vV
if(breakWhile) QO7:iSZJ
break; by
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//count++; IeB6r+4|
//if(count>4) NslA/"*
// siteStop(); H|)1T-%
} :ky<`Jfr`
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System.err.println("文件下载结束!"); M96( Rg
} 9i<-\w^$
catch(Exception e){e.printStackTrace ();} _o?(t\B9{
} c9uT`h
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//获得文件长度 rc$!$~|I3Z
public long getFileSize() 6}T%m?/ }
{ v|I5Gz$qpa
int nFileLength = -1; ~8m>DSs)D
try{ 1D[P\r-
URL url = new URL(siteInfoBean.getSSiteURL()); xNm32~
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); _0*>I1F~
httpConnection.setRequestProperty("User-Agent","NetFox"); p},Fwbl
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int responseCode=httpConnection.getResponseCode(); (`]*Y(/2G
if(responseCode>=400) i5KwYoN
{ S8OVG4-
processErrorCode(responseCode); DjzUH{6O
return -2; //-2 represent access is error )6Q0f
} ~snF20
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String sHeader; m_$I?F0
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for(int i=1;;i++) 06^1#M$'
{ ZGpTw[5ql
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); @pGlWw9*
//Utility.log(in.readLine()); uT} TSwgp
sHeader=httpConnection.getHeaderFieldKey(i); b3b~T]]
if(sHeader!=null) UB$`;'|i
{ 2rCY&8
if(sHeader.equals("Content-Length")) }=hoATs
{ X^D9)kel
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 2-V)>98
break; ;hA7<loY
} 7_40_kwJi
} 2ly,l[p8
else eq~c
break; `MsYgd
} T_x+sv=|X!
} @qPyrgy
catch(IOException e){e.printStackTrace ();} As+;qNO
catch(Exception e){e.printStackTrace ();} N
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Utility.log(nFileLength); 48CI8[T
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return nFileLength; U>_IYT
} 9*|3E"Vr
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//保存下载信息(文件指针位置) ?JgO-.
private void write_nPos() H_?B{We
{ hOB\n!
try{ pf8O`e,Awf
output = new DataOutputStream(new FileOutputStream(tmpFile)); $}nh[@
output.writeInt(nStartPos.length); XalJo@%-
for(int i=0;i<nStartPos.length;i++) 9c6GYWIFt&
{ h
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// output.writeLong(nPos); c',:@2R
output.writeLong(fileSplitterFetch.nStartPos); &'(a$S>v
output.writeLong(fileSplitterFetch.nEndPos); rMHQzQ0%
} ?7uKP}1|
output.close(); )@,90Vhh
} 1/2V.:bg
catch(IOException e){e.printStackTrace ();} #$=8g
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catch(Exception e){e.printStackTrace ();} H=&/ Q
} WBr:|F+~s
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//读取保存的下载信息(文件指针位置) fJWxJSdi
private void read_nPos() rg5]`-!=
{ R3j#WgltP
try{ m-ph}
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); [v0ri<