/* iKY&gnu"
**SiteFileFetch.java &r%3)Z8Et
*/ gK#w$s50
package NetFox; 8ipLq`)
import java.io.*; v%[mt`I
import java.net.*; Q2=~
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public class SiteFileFetch extends Thread { XU7bWafy
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SiteInfoBean siteInfoBean = null; //文件信息Bean hNy S
long[] nStartPos; //开始位置 -AQX-[B
long[] nEndPos; //结束位置 0f1#TgX
FileSplitterFetch[] fileSplitterFetch; //子线程对象 X9HI@M]h
long nFileLength; //文件长度 OpQa!
boolean bFirst = true; //是否第一次取文件 pnU
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boolean bStop = false; //停止标志 hg @Jpg
File tmpFile; //文件下载的临时信息 9n7d
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DataOutputStream output; //输出到文件的输出流 0<9TyN6
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) [4e5(!e
public SiteFileFetch(SiteInfoBean bean) throws IOException DBRJtU!5x
{ }dM^6
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siteInfoBean = bean; qQ_QF
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); JhcS
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); GZo4uwG@a
if(tmpFile.exists ()) KK6YA
{ ?Dm&A$r
bFirst = false; M<Mr (z
read_nPos(); !:5n
} Y')+/<Q2E
else b'YbHUyu
{ M&dtXG8<^
nStartPos = new long[bean.getNSplitter()]; 7SCI_8`
nEndPos = new long[bean.getNSplitter()]; }0G Ab2
} -tQ|&fl
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public void run() f7'%AuSQ(
{ "6i9 f$N
//获得文件长度 4SYN$?.Mp
//分割文件 L/I-(08!Y:
//实例FileSplitterFetch 0bE_iu>f'
//启动FileSplitterFetch线程 &bRH(yF
//等待子线程返回 KJiwM(o
try{ p* @L1
if(bFirst) i`~y%y
{ 5z_)
nFileLength = getFileSize(); +,lD_{}_
if(nFileLength == -1) Ou^dI
{ U VT8TN-T
System.err.println("File Length is not known!"); x-<dJ}`
} qJ@?[|2R
else if(nFileLength == -2) v6:DA#0
{ u#\3T>o%@
System.err.println("File is not access!"); k$UBZ,=iC
} DYS(ZY)4
else XHr{\/4V
{ :$j~;)2
for(int i=0;i<nStartPos.length;i++) *u}):8=&R
{ ^4"_I
nStartPos = (long)(i*(nFileLength/nStartPos.length)); mI# BQE`p6
} EB#z\
for(int i=0;i<nEndPos.length-1;i++) iJi|* P5dw
{ m_B5M0},
nEndPos = nStartPos[i+1]; L*z;-,
} hk
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nEndPos[nEndPos.length-1] = nFileLength; aI{[W;43T
} J:5n/m^A
} gT.-Cf{
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//启动子线程 RY'y%6Z]ZO
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; oZ}e
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for(int i=0;i<nStartPos.length;i++) jhLh~.
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{ D&shrKFx
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), zin,yJ
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 61'7b`:(hi
nStartPos,nEndPos,i); OjN]mp-q
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); !4E:IM63
fileSplitterFetch.start(); <7GK *I
} <da! #12L
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), =T$E
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); g@Zc'g/XB
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", b Y>Ug{O;
nEndPos = " + nFileLength); ld
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// fileSplitterFetch[nPos.length-1].start(); JG[+e*8
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//等待子线程结束 ^.(]i\V_
//int count = 0; MWl@smRh
//是否结束while循环 tT 7$2 9
boolean breakWhile = false; 073(xAkL{
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while(!bStop) 7v-C-u[E`
{ Lg^m?~{
write_nPos(); 9hv\%_>o
Utility.sleep(500); ty78)XI
breakWhile = true; c:0$
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for(int i=0;i<nStartPos.length;i++) s+[=nau('w
{ {t7
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if(!fileSplitterFetch.bDownOver) h+Dok#g
{ cZu:dwE
breakWhile = false; <fw[7=_)^
break; +,MzD'(D
} "\9@gfsp)
} [ACYd/
if(breakWhile) Cdv TC`~,
break; *f(}@U
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//count++; uk1IT4+
//if(count>4)
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// siteStop(); M;(lc?Rv
} Dihk8qJ/6
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System.err.println("文件下载结束!"); _ehU:3L`s
} gQ?k}D
catch(Exception e){e.printStackTrace ();} +o/q@&v;Ax
} $d"6y
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//获得文件长度 ecHy. 7H
public long getFileSize() ?eu=0|d
{ L$b9|j7
int nFileLength = -1; !O5UE
try{ .,c8cq?
URL url = new URL(siteInfoBean.getSSiteURL()); _uBf.Qfs
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ! yxb<
httpConnection.setRequestProperty("User-Agent","NetFox"); E`i;9e'S
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int responseCode=httpConnection.getResponseCode(); *) wp
if(responseCode>=400) Xbz}pAnj
{ &L/C:<.
processErrorCode(responseCode); [p<L*3<
return -2; //-2 represent access is error _])1P?.
} +`[$w<I
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String sHeader; ^WeT3b q
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for(int i=1;;i++) I[&!\Me[+w
{ \F>
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); HsO=%bb
//Utility.log(in.readLine()); ZFRKh:|
sHeader=httpConnection.getHeaderFieldKey(i); ^D h2_vbI
if(sHeader!=null) i{`>!)U
{ 8^^al!0K~
if(sHeader.equals("Content-Length")) "u%$`*
{ I*#~@:4*
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); pG"
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break; pZH
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} $)'{+1
} Y`M.hYBXk
else ^iGIF~J9
break; (s9?#t6
} 46 77uy
} -F*j`
catch(IOException e){e.printStackTrace ();} iBZ+gsSP
catch(Exception e){e.printStackTrace ();} &o?pZ(\C
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Utility.log(nFileLength); ]-R8W/fDn
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return nFileLength; rf9RG!
} #0mn_#-P)
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//保存下载信息(文件指针位置) v.\&gn