/* 0QEVL6gw
**SiteFileFetch.java ;t"#7\
*/ #.FtPR
package NetFox; f4`=yj*
import java.io.*; uN6TV*]:
import java.net.*; Wl::tgU
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public class SiteFileFetch extends Thread { k\x>kJ}0
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SiteInfoBean siteInfoBean = null; //文件信息Bean
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long[] nStartPos; //开始位置 (AXSQI~y
long[] nEndPos; //结束位置 I&R4.;LW
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ha3 Qx
long nFileLength; //文件长度 yWt87+%T
boolean bFirst = true; //是否第一次取文件 V\)@Yk2
boolean bStop = false; //停止标志 6^UeEmjc
File tmpFile; //文件下载的临时信息 ).-B@&Eu%
DataOutputStream output; //输出到文件的输出流 [T~O%ly7x&
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) p# O%<S@?
public SiteFileFetch(SiteInfoBean bean) throws IOException H4^-M Sw
{ X^fMt]
siteInfoBean = bean; }MXZ
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); *9?-JBT&F
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ~~:i+-[
if(tmpFile.exists ()) G~u94rw|:
{ 4J-)+C/edx
bFirst = false; K^s!0[6
read_nPos(); ']A+wGR&r
} }& `#
else N`8?bU7a}"
{ q=UKL`;C}U
nStartPos = new long[bean.getNSplitter()]; [g_f`ZJ=
nEndPos = new long[bean.getNSplitter()]; p4HX83y{
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} pmIQD"
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public void run() 4vp,izNW
{ Dr,{V6^
//获得文件长度 Fgt/A#`fz
//分割文件 v[35C]gS
//实例FileSplitterFetch u|O5ZV-cd
//启动FileSplitterFetch线程 O2ety2}?f
//等待子线程返回 4N*Fq!k~
try{ l|U=(aA]h
if(bFirst) .5KRi6
{ "%-HZw%X
nFileLength = getFileSize(); |giK]Z
if(nFileLength == -1) C03ehjT<
{ @j5W4HU
System.err.println("File Length is not known!"); 552c4h/T
} +Rxf~m(pV
else if(nFileLength == -2) x_bS-B)%Y:
{ D3(|bSca
System.err.println("File is not access!"); JU/K\S2%,
} |W`1#sP>
else C&Ow*~
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for(int i=0;i<nStartPos.length;i++) K(Zd-U
{ 8O("o7~"
nStartPos = (long)(i*(nFileLength/nStartPos.length)); HQ ^> ~
} }4
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for(int i=0;i<nEndPos.length-1;i++) IEjKI"
{ H_vOZ0
nEndPos = nStartPos[i+1]; p\b:uy6#
} "xdXHuX
nEndPos[nEndPos.length-1] = nFileLength; >77
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} u23^* -
} 6>SP5|GG
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//启动子线程 ]^/:Xsk$
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; E/Eny5
for(int i=0;i<nStartPos.length;i++) IAhyGD{b
{ YJ.'Yc
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), #B;` T[
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), -"<H$
nStartPos,nEndPos,i); ATk>:^n
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); `c(,_oa{
fileSplitterFetch.start(); .e"De-u
} b4S7Q"g
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ) m%ghpX
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); J$j&j`
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", !gW$A-XD
nEndPos = " + nFileLength); pj?+cy
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// fileSplitterFetch[nPos.length-1].start(); 3yZtyXRPn
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//等待子线程结束
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//int count = 0; \*v}IO>2})
//是否结束while循环 S2;{)"mS
boolean breakWhile = false; ,BOB &u
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while(!bStop) c{V0]A9VF
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write_nPos(); e7>)Z
Utility.sleep(500); ()}O|JL:K
breakWhile = true; ;)u}`4~L
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for(int i=0;i<nStartPos.length;i++) EYcvD^!1g
{ yQM7QLbTk
if(!fileSplitterFetch.bDownOver) 8 y/YX
{ {ZY^tTsY
breakWhile = false; $/Zsy6q:
break; zf5s\w.4
} _+wv3?
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} R]m`v: 9
if(breakWhile) FWq6e,
break; 0r_8/|N#
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//count++; X+?*Tw!\
//if(count>4) B#B$w_z
// siteStop(); J55K+
} A
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System.err.println("文件下载结束!"); "z=A=~~<{
} %0Ulh6g;Dt
catch(Exception e){e.printStackTrace ();} h"
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} ?G*XZ0u~
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//获得文件长度 ;]i&AAbj
public long getFileSize() RR75ke[Hs
{ DSizr4R
int nFileLength = -1; *;,=x<
try{ fP&F$"o8
URL url = new URL(siteInfoBean.getSSiteURL()); @zT.&1;`
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); n-}:D<\7
httpConnection.setRequestProperty("User-Agent","NetFox"); yodJGGAzk
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int responseCode=httpConnection.getResponseCode(); NQ'^z
if(responseCode>=400) B5 C]4
{ ?0DCjh8We
processErrorCode(responseCode); #fk)Y1
return -2; //-2 represent access is error ,B5Ptf#
} 0{BPT>'
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String sHeader; a_`E'BkgU
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for(int i=1;;i++) 8v*>~E/0
{ >#$(M5&}-
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); fh b &_T
//Utility.log(in.readLine()); p<Ah50!B
sHeader=httpConnection.getHeaderFieldKey(i); p27A#Uu2}
if(sHeader!=null) i74^J +xk
{ wTf0O@``6H
if(sHeader.equals("Content-Length")) UacN'Rat
{ E:D1ZV
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); SV<*qz
break; hIXGfvUy
} QTz{ZNi!
} U4 m[@wF
else ;}A#ws_CD_
break;
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} ]n _-
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catch(IOException e){e.printStackTrace ();} `]LaX&u
catch(Exception e){e.printStackTrace ();} >BrxJw#M
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Utility.log(nFileLength); s|pb0
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return nFileLength; \xDu#/^
} [9BlP
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//保存下载信息(文件指针位置) ,h#!!j\j6
private void write_nPos() W#u}d2mP
{ >u*woNw(XM
try{ d=oOMXYa
output = new DataOutputStream(new FileOutputStream(tmpFile)); I%e7:cs >
output.writeInt(nStartPos.length); JV36@DVQ
for(int i=0;i<nStartPos.length;i++) c5;YKON
{ cuq7eMG6z
// output.writeLong(nPos); Y@9L8XNP>
output.writeLong(fileSplitterFetch.nStartPos); Tb IM{X
output.writeLong(fileSplitterFetch.nEndPos); nd3]&occ
} x^+ C[%
output.close(); ~e
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} O.&6J/
catch(IOException e){e.printStackTrace ();} yZ0; \Tr*J
catch(Exception e){e.printStackTrace ();} @
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} Pu/0<