/* *` -
**SiteFileFetch.java @B)5Ho
*/ "V:RKH`
package NetFox; ZDK+>^A)
import java.io.*; gT fA]
import java.net.*;
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public class SiteFileFetch extends Thread { Q9X+H4`}y
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SiteInfoBean siteInfoBean = null; //文件信息Bean Y,KSr|vG
long[] nStartPos; //开始位置 \!)1n[N
long[] nEndPos; //结束位置 hs)_h^P
FileSplitterFetch[] fileSplitterFetch; //子线程对象 |@D%y&
long nFileLength; //文件长度 0#sf,ja>
boolean bFirst = true; //是否第一次取文件 e&pt[W}X%u
boolean bStop = false; //停止标志 ,Igd<A=
File tmpFile; //文件下载的临时信息 .P!pC
DataOutputStream output; //输出到文件的输出流 J.,7d ,
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ^hwTnW9Z1:
public SiteFileFetch(SiteInfoBean bean) throws IOException /:w.Zf>B9
{ /kFw(l_.
siteInfoBean = bean; `Yo!sgPO\
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); D14i]
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Q[% +y.
if(tmpFile.exists ()) m@c\<-P
{ )cRP6 =
bFirst = false; \yo)oIi[p
read_nPos(); I#:4H2H6
} #7,;/rtO7
else g5hMZPOmP
{ 0bI}
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nStartPos = new long[bean.getNSplitter()]; {b]V
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nEndPos = new long[bean.getNSplitter()]; D"GQlR
} v^Pjvv =
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} <lHVch"(^$
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public void run() EPGp8VGXp~
{ jun$CY4
//获得文件长度 `\#J&N
//分割文件 ~jn~M_}K
//实例FileSplitterFetch `_5{:
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//启动FileSplitterFetch线程 hy{1 Ea/T
//等待子线程返回 6,UW5389
try{ jxNnrIA
if(bFirst) %XAF"J
{ %[H|3
nFileLength = getFileSize();
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if(nFileLength == -1) 0L|D1_k[
{ 68-2EWq
System.err.println("File Length is not known!"); d\A!5/LG
} Rt2<F-gY
else if(nFileLength == -2) :o+&>z
{ ]3bXJE
System.err.println("File is not access!"); TG@ W:>N(
} oVYW'~OID
else <9jN4hV
{ GFppcL@a
for(int i=0;i<nStartPos.length;i++) Qvl3=[S
{ a1yGgT a?D
nStartPos = (long)(i*(nFileLength/nStartPos.length)); T.x"a$AU
} ^7>k:|7-t
for(int i=0;i<nEndPos.length-1;i++) 6
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nEndPos = nStartPos[i+1]; !H/5Ud9
} AIX?840V
nEndPos[nEndPos.length-1] = nFileLength; wseb]=U
} 1K&l}/zUl
} t],5{UF
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//启动子线程
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fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; Kp)H>~cL
for(int i=0;i<nStartPos.length;i++) t+<?$I[
{ : 7Jpt3
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ~"8D]
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), "s.]amC
nStartPos,nEndPos,i); 2SV}mK U
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); {sb2r%U!+
fileSplitterFetch.start(); rS&"UH?c7
} odaCKhdk
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), nC 2e^=^
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); )Lb?ZXT3
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", >pRC$'Usx
nEndPos = " + nFileLength); WkUV)/j
// fileSplitterFetch[nPos.length-1].start(); [8v>jQ)
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//等待子线程结束 "
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//int count = 0; :pXY/Pa
//是否结束while循环 u/ZV35z
boolean breakWhile = false; y)*W!]:7^>
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while(!bStop) )&vuT
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{ ec3zoKtV
write_nPos(); f(UB$^4
Utility.sleep(500); L"Dos +
breakWhile = true; s8V:;$ !
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for(int i=0;i<nStartPos.length;i++) 0T2^$^g
{ Dt:NBN
if(!fileSplitterFetch.bDownOver) d.xT8l}sS
{ 76(/(v.x
breakWhile = false; zGaqYbQD
break; AwtiV-w
} p)Fi{%bc
} e:+[}I)
if(breakWhile) szUJh9-
break; Aaug0X
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//count++; ov\+&=IRG
//if(count>4) 4w#:?Y
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// siteStop(); )nlFyWXh.
} i
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System.err.println("文件下载结束!"); PIHKSAnq
} 2"EaF^?\
catch(Exception e){e.printStackTrace ();} w ufQyT`
} C6A!JegU
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//获得文件长度 y#FFxSH>
public long getFileSize() '.]<lh!
{ Q%W>m0%
int nFileLength = -1; Y/T-2)D
try{ Fg0!2MKq*
URL url = new URL(siteInfoBean.getSSiteURL()); b+$E*}
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); piFZu/~Gq\
httpConnection.setRequestProperty("User-Agent","NetFox"); U+[h^M$U
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int responseCode=httpConnection.getResponseCode(); "A0y&^4B@
if(responseCode>=400) wli H3vA_
{ 3|%058bF
processErrorCode(responseCode); >z73uKA(
return -2; //-2 represent access is error zU'7x U-
} Kw(S<~9-@
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String sHeader; _w2%!+'
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for(int i=1;;i++) ez~u A4
{ aq\Fh7
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ab`9MJc;
//Utility.log(in.readLine()); n@6vCdk.
sHeader=httpConnection.getHeaderFieldKey(i); >">Xd@Wk
if(sHeader!=null) c}s#!|E0v
{ MI-S}Qoe
if(sHeader.equals("Content-Length")) #fk1'c2
{ pfw`<*e'
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); X ka+1c
break; Ti7
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} ) I(9qt>Y
} |kD69
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else bYqv)_8
break; *IIA"tC
} E~VV19Bv]/
} PjXiYc&
catch(IOException e){e.printStackTrace ();} O*Y ? :
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catch(Exception e){e.printStackTrace ();} A%x0'?GU
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Utility.log(nFileLength); EhW"s%Q
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return nFileLength; g4YlG"O[~
} e\^}PU
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//保存下载信息(文件指针位置) Ab>Kf r#
private void write_nPos() H=w):kL|
{ o|q5eUh=EY
try{ )WW*X6[k
output = new DataOutputStream(new FileOutputStream(tmpFile)); <QC7HR
output.writeInt(nStartPos.length); 87W!R<G
for(int i=0;i<nStartPos.length;i++) /8nUecr
{
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// output.writeLong(nPos); _}ii1fLv
output.writeLong(fileSplitterFetch.nStartPos); !]Qk?T~9-
output.writeLong(fileSplitterFetch.nEndPos); `#wEa'v6
} <2L,+
output.close(); ^suQ7#g
} g5"I{ol5T~
catch(IOException e){e.printStackTrace ();} zwRF-{s
catch(Exception e){e.printStackTrace ();} ,4`Vl<6
} g|->W]q@;
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//读取保存的下载信息(文件指针位置) %'_:#!9
private void read_nPos() = Ul"{T<
{ WagL8BpLx
try{ @mv
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DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); A+foc5B
int nCount = input.readInt(); @1&"S7@}u
nStartPos = new long[nCount]; s8 MQ:eAP
nEndPos = new long[nCount]; NqD Hrx
for(int i=0;i<nStartPos.length;i++) .w@B )f*
{ O9_1a=M
nStartPos = input.readLong(); q m_m8
nEndPos = input.readLong(); rC!"<