/* X'@'/[?
**SiteFileFetch.java KSc~GP_
*/ dMJ!>l>2
package NetFox; RyuEHpN}
import java.io.*; t@)my[ !
import java.net.*; 8"i/wMP]
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public class SiteFileFetch extends Thread { Ir27ZP
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SiteInfoBean siteInfoBean = null; //文件信息Bean !lhFKb;
long[] nStartPos; //开始位置 <GaT|Hhc=
long[] nEndPos; //结束位置 T`?n,'!(
FileSplitterFetch[] fileSplitterFetch; //子线程对象 @^!\d#/M
long nFileLength; //文件长度 \!<"7=(J{4
boolean bFirst = true; //是否第一次取文件 b/nOdFO@
boolean bStop = false; //停止标志 Q 2"WV
File tmpFile; //文件下载的临时信息 gLD{1-v
DataOutputStream output; //输出到文件的输出流 f*<ps
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) c;wA
public SiteFileFetch(SiteInfoBean bean) throws IOException MqdB\OW&
{ -2 xE#r
siteInfoBean = bean; &DLhb90
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ~M*gsW$
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); y"-{$ N
if(tmpFile.exists ()) b
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{ VhvTBo<cw
bFirst = false; @8zT'/$
read_nPos(); dF
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} ]RD5Ex!K?
else :G 5C ]'t
{ 6R2uWv
nStartPos = new long[bean.getNSplitter()]; 4%7s259%
nEndPos = new long[bean.getNSplitter()]; 4.Z(:g
} ~^$MA$ /p
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} [D[D`gpjA
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public void run() 2r;GcjezH
{ 6vobta^w
//获得文件长度 bMmra.x4L
//分割文件 9|=nV|R'6
//实例FileSplitterFetch qlUzr.^-
//启动FileSplitterFetch线程 B+46.bIH
//等待子线程返回 !
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try{ h<Wg 3o
if(bFirst) ,QvYTJ{
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nFileLength = getFileSize(); ]fE3s{y
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if(nFileLength == -1) a5?A!k\2
{ B{aU;{1
System.err.println("File Length is not known!"); W-XpJ\_
} ffk4mhH
else if(nFileLength == -2) wyw <jH
{ tS<h8g_
System.err.println("File is not access!"); XWtiwf'K
} nU17L6'$
else PN
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{ azX`oU,l
for(int i=0;i<nStartPos.length;i++) $XGtS$
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); {eR9 ;2!
} {|6z+vR
for(int i=0;i<nEndPos.length-1;i++) gz61FW
{ 5B*qbM
nEndPos = nStartPos[i+1]; $.:3$et@/
} fHfY}BQS
nEndPos[nEndPos.length-1] = nFileLength; y5u\j{?Te
} HO5d%85
} a$m_D!b~_
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//启动子线程 ^ ulps**e
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 7'OPjtM
for(int i=0;i<nStartPos.length;i++) !ZrB^?sO
{ |$e:*
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), /U*yw5
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ETp'oh}?
nStartPos,nEndPos,i); M<(u A'
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); *jF#^=
fileSplitterFetch.start(); U$'y_}V
} C[YnrI!
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), +'XhC#:
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); l^r' $;<m
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Mr*|9h
nEndPos = " + nFileLength); u+2Lm*M
// fileSplitterFetch[nPos.length-1].start(); 2EfflZL3
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//等待子线程结束 [H,u)8)
//int count = 0; !8$RBD %
//是否结束while循环
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boolean breakWhile = false; GuO`jz F
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while(!bStop) cNj*E
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{ io4aYB\
write_nPos(); D1Yh,P<CF\
Utility.sleep(500); ;+`uER
breakWhile = true; e<5Y94YE
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for(int i=0;i<nStartPos.length;i++) Y=Hz;Ni
{ xR908+>5
if(!fileSplitterFetch.bDownOver) uRQ_'l
{ o:UXPAj
breakWhile = false; `^##b6jH
break; R2LK.bTVn
} Y&~M7TY b
} s'L?;:)dyB
if(breakWhile) wPnybb{
break; *{5>XH{
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//count++; 1q]c7"
//if(count>4) AuCWQ~
// siteStop(); FT/amCRyT
}
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System.err.println("文件下载结束!"); 1S%}xsR0
} "s]y!BLk
catch(Exception e){e.printStackTrace ();} >&Fa(o;*
} NHiq^ojk
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//获得文件长度 Q6^x8
public long getFileSize() 6fwY$K\X
{ T=\!2gt
int nFileLength = -1; ~HDdO3
try{ Np)aS[9W
URL url = new URL(siteInfoBean.getSSiteURL()); dWR1cvB(wY
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); HomN/wKh
httpConnection.setRequestProperty("User-Agent","NetFox"); >.LKct*5K
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int responseCode=httpConnection.getResponseCode(); Y\?j0X;
if(responseCode>=400) {4rQ7J4Ux
{ <k]qH-v4
processErrorCode(responseCode); 7GZq|M_:y
return -2; //-2 represent access is error ;V.vfar
} bPd-D-R
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String sHeader; #WufZ18#
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for(int i=1;;i++) ,7,;twKz
{ 9*}gl3y
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); +Me2U9
//Utility.log(in.readLine()); (@&I_>2Q
sHeader=httpConnection.getHeaderFieldKey(i); $']VQ4tZ
if(sHeader!=null) 40K2uT{cq
{ <NB41/
if(sHeader.equals("Content-Length")) xm H-!Da
{ \G;CQV#{9
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 7g6RiH}
break; 59!)j>f
} [7W(NeMk
} \&q=@rJp(z
else .3wY\W8Dr-
break; {}\CL#~y
} GLh]G(
} D1X{:#|
catch(IOException e){e.printStackTrace ();} ]\;xN~l
catch(Exception e){e.printStackTrace ();} ' G#SLqZy
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Utility.log(nFileLength); agsISu(
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return nFileLength; _ #'9kx|)
} oR %agvc^^
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//保存下载信息(文件指针位置) Tbh '_F6
private void write_nPos() nj2gs,k
{ h>3H7n.
try{ Hj~O49%j&
output = new DataOutputStream(new FileOutputStream(tmpFile)); OM!=ViN(=
output.writeInt(nStartPos.length); I;j3*lV_
for(int i=0;i<nStartPos.length;i++) ^ d\SPZ
{ /V^sJ($V$~
// output.writeLong(nPos); "ahvNx;x
output.writeLong(fileSplitterFetch.nStartPos); Qpu3(`d<
output.writeLong(fileSplitterFetch.nEndPos); +qkMQETV6
} mJMq{6;
output.close(); nem@sB;v#
} r_2btpL^
catch(IOException e){e.printStackTrace ();} Y'N'hRD
catch(Exception e){e.printStackTrace ();} {;k_!v{
} nW5K[/1D
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//读取保存的下载信息(文件指针位置) GS%b=kc
private void read_nPos() _01Px a2.
{ A3s57.Z]|
try{ /77z\[CeYH
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); #x~_`>mDN
int nCount = input.readInt(); _^T}_
nStartPos = new long[nCount]; yGEb7I$h
nEndPos = new long[nCount]; v2J0u:#,
for(int i=0;i<nStartPos.length;i++) Q!$IQJ]|Y
{ D 'L{wm
nStartPos = input.readLong(); ;Qa;@
nEndPos = input.readLong(); detL jlE
} ;.s:X
input.close(); t)I0lnbs
} \"d?=uFe
catch(IOException e){e.printStackTrace ();} ?}sOG?{
catch(Exception e){e.printStackTrace ();} o#e7,O
} grbTcLSF
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private void processErrorCode(int nErrorCode) z5EVG
{ [hU=mS8=^
System.err.println("Error Code : " + nErrorCode); K0<yvew
} kp`0erJqw
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//停止文件下载 I:t^S.,
public void siteStop() o!Fl]3F
{ H#+xKYrp
bStop = true; tpU
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for(int i=0;i<nStartPos.length;i++) ou6j*eSN
fileSplitterFetch.splitterStop(); 8^X]z|[d2
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} AZwa4n}"
} ZQ[~*)
//负责部分文件的抓取 Wc;+2Hl[@
**FileSplitterFetch.java sqG`"O4W
*/ 2U%qCfh6|
package NetFox; }n95< {
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import java.io.*; !$r9C/k
import java.net.*; 3bts7<K=
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public class FileSplitterFetch extends Thread { 7@P656{
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String sURL; //File URL e\.HWV ]I
long nStartPos; //File Snippet Start Position };p~A-E=
long nEndPos; //File Snippet End Position Gl>E[iO
int nThreadID; //Thread's ID }ecsGw
boolean bDownOver = false; //Downing is over (1 yGg==W.
boolean bStop = false; //Stop identical %#9P?COs&W
FileAccessI fileAccessI = null; //File Access interface .,mM%w,^O
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException stXda@y<p
{ o<J5!
this.sURL = sURL; [&daG