/* NKRXY~zHh
**SiteFileFetch.java g=.5*'Xlp
*/ g7pFOcV
package NetFox; cD\Qt9EI
import java.io.*; iX28+weH
import java.net.*; {BF\G%v;+
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public class SiteFileFetch extends Thread { /D q]=P
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SiteInfoBean siteInfoBean = null; //文件信息Bean e0TnA
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long[] nStartPos; //开始位置 d dPJx<
long[] nEndPos; //结束位置 v7-'H/d.
FileSplitterFetch[] fileSplitterFetch; //子线程对象 km^AX:r1
long nFileLength; //文件长度 `C1LR,J
boolean bFirst = true; //是否第一次取文件 ch&r.
boolean bStop = false; //停止标志 Z6=!}a%
File tmpFile; //文件下载的临时信息 #SdaTMLFf
DataOutputStream output; //输出到文件的输出流 cA*%K[9
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) /X?Nv^Hy
public SiteFileFetch(SiteInfoBean bean) throws IOException PIA&s6U
{ L81"W`?
siteInfoBean = bean; 9T]]T Ev4
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); }yw\+fc
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); _FV.}%W<u
if(tmpFile.exists ()) 5*CwQJC<
{ IkvH8E
bFirst = false; yD KX,
read_nPos(); ^ey\ c1K
} Vf@/}=X *
else @.0,ka,X
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nStartPos = new long[bean.getNSplitter()]; ] !H<vR$8
nEndPos = new long[bean.getNSplitter()]; YcI]_[
} M_e!s}F
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} f9$98SI
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public void run() ~UnfS};U
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//获得文件长度 ;8A_-$
//分割文件 D,7! /u'
//实例FileSplitterFetch <D=%55
//启动FileSplitterFetch线程 G{J9Fb8
//等待子线程返回 Pa.!:N-
try{ hk=+t&Y<H
if(bFirst) ovHbs^H%
{ Y,a.9AWw)
nFileLength = getFileSize(); ^,X+
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if(nFileLength == -1) H1w;Wb1se
{ ED6H
System.err.println("File Length is not known!"); /#X O!%=7
} V=c&QPP
else if(nFileLength == -2) l`1ZS8 [.
{ r8xH A
System.err.println("File is not access!"); cz0tnF*&
} * T-XslI
else U3Q'ZT
{ # WxH
for(int i=0;i<nStartPos.length;i++) 8FMP)N4+
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); CN >q`[!
} Ywni2-)<
for(int i=0;i<nEndPos.length-1;i++) )TWf/Lcp
{ BG|Kw)z*KM
nEndPos = nStartPos[i+1]; 4Qw!YI#40$
} UeVF@rw
nEndPos[nEndPos.length-1] = nFileLength; A[b'MNsv
} iX,Qh2(ig
} 7#RW4ZM
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//启动子线程 lmod8B
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; A*$vk2VWw
for(int i=0;i<nStartPos.length;i++) }3+(A`9h f
{ CocvEoE*z
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Ao,lEjN I
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), xNx!2MrR;
nStartPos,nEndPos,i); F'"-4YV>&
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ]\GGC]:\@
fileSplitterFetch.start(); dx~F [
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// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 20J:_+=]
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); F|"NJ*o}
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", aWit^dp
nEndPos = " + nFileLength); .Wr7?'D1M
// fileSplitterFetch[nPos.length-1].start(); s*VZLKO
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//等待子线程结束 2;q6~Y,
//int count = 0; wp@c;gK7
//是否结束while循环 pIh@!C
boolean breakWhile = false; t!PFosFp
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while(!bStop) T\]z0M
{ }e82e
write_nPos(); q k !Q2W
Utility.sleep(500); y(q1~73s
breakWhile = true; F[J;u/Z
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for(int i=0;i<nStartPos.length;i++) lD{9o2
{ ArF+9upGY
if(!fileSplitterFetch.bDownOver) V57^0^Zp`
{ +pDuRr
breakWhile = false; QK;A>]
break; 2Qn%p[#n
} V{(ve#y7`{
} $biCm$a
if(breakWhile) 1tD4I
break; D
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//count++; Rk"_4zJk
//if(count>4) m+1MoeR
// siteStop(); >bmL;)mc&
} SA}]ZK P
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System.err.println("文件下载结束!"); 03#r F@e
} 7|H !( a'
catch(Exception e){e.printStackTrace ();} A/GEDG
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} dGZVWEaPfx
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//获得文件长度 ][D<J0
public long getFileSize() [<bfwTFsl
{ U+nwLxe'
int nFileLength = -1; bPiJCX0d
try{ (3 B;
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URL url = new URL(siteInfoBean.getSSiteURL()); Z~$fTW6g
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); E@t^IGDr
httpConnection.setRequestProperty("User-Agent","NetFox"); UiW(/L
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int responseCode=httpConnection.getResponseCode(); RaG-9gujI
if(responseCode>=400) nz+DPk["
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processErrorCode(responseCode); ;clF\K>
return -2; //-2 represent access is error =XyK/$
} Gv3a<Knn4
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String sHeader; 4RJ8 2yq-
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for(int i=1;;i++) .#Z}}W#
{ q4Qm:|-
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); m?bb/o'B
//Utility.log(in.readLine()); +#n5w8T)M
sHeader=httpConnection.getHeaderFieldKey(i); wbVM'E/&
if(sHeader!=null) ;?bRRW
{ bvs0y7M='
if(sHeader.equals("Content-Length")) }8 fG+H.
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); QV7K~qi
break; NZmmO )p4
}
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} zZGPA j
else ^`Vt<DMT
break; :>;-uve8'
} v`bX#\It
} pu,/GBG_
catch(IOException e){e.printStackTrace ();} q^>$YY>F
catch(Exception e){e.printStackTrace ();} R84g<
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Utility.log(nFileLength); 78Nli/U
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return nFileLength; &>p2N
} coiTVDwA
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//保存下载信息(文件指针位置) J9mLW}I?NW
private void write_nPos() l3)(aay!
{ lKxv
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try{ yIh>j.P
output = new DataOutputStream(new FileOutputStream(tmpFile)); JIjqGxR
output.writeInt(nStartPos.length); `3*>tq
for(int i=0;i<nStartPos.length;i++) Oh5(8.<y
{ #<MLW4P
// output.writeLong(nPos); ?,;|*A
output.writeLong(fileSplitterFetch.nStartPos); --dGN.*xb4
output.writeLong(fileSplitterFetch.nEndPos); e(6g|h
} UW. F1)
output.close(); A|c :&i
} pzCD'
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catch(IOException e){e.printStackTrace ();} JwRdr8q
catch(Exception e){e.printStackTrace ();} cJGA5m/{I
} d]}
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//读取保存的下载信息(文件指针位置) ~2S`y=*:
private void read_nPos() mdoy1a
{ <