/* CjA}-ee
**SiteFileFetch.java .sUL5`
*/ UKSI"/8I
package NetFox; c:}K(yAdd
import java.io.*; _j<,qi
import java.net.*; OL[_2m*;9p
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public class SiteFileFetch extends Thread { yNQ 9~P2
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SiteInfoBean siteInfoBean = null; //文件信息Bean `RE1q)o}8M
long[] nStartPos; //开始位置 dGc>EZSdj
long[] nEndPos; //结束位置 5xG/>fn
FileSplitterFetch[] fileSplitterFetch; //子线程对象 !Jo.Un7
long nFileLength; //文件长度 *Xd_=@L&B
boolean bFirst = true; //是否第一次取文件 O0"&wvR+5
boolean bStop = false; //停止标志 i)e)FhEY6
File tmpFile; //文件下载的临时信息 O11.wLNH
DataOutputStream output; //输出到文件的输出流 "?sLi
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) '?!2h'
public SiteFileFetch(SiteInfoBean bean) throws IOException ;"GI~p2~7
{ 4U:+iumy2
siteInfoBean = bean; >l5JwwG
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); z~a]dMs"(P
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); U0S}O(Ptr
if(tmpFile.exists ()) >JhIRf
{ d>7bwG+k
bFirst = false; gClDVO
read_nPos(); 3!B3C(g
} HjN )~<j
else 6_a.`ehtj<
{ 5(OF~mX#
nStartPos = new long[bean.getNSplitter()]; ~
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nEndPos = new long[bean.getNSplitter()]; |m7`:~ow
} :hxZ2O?5_
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public void run() & ~[%N
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//获得文件长度 Afa{f}st
//分割文件 J XnPKAN
//实例FileSplitterFetch c5rQkDW
//启动FileSplitterFetch线程 IA;KEGJ
//等待子线程返回 mwTn}h3N
try{ >Y< y]vM:
if(bFirst) 2jx+q
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nFileLength = getFileSize(); Bf88f<Z
if(nFileLength == -1) Qi7^z;
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System.err.println("File Length is not known!"); wGQ{
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else if(nFileLength == -2) XT_BiZ%l5O
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System.err.println("File is not access!"); M !OI :v
} vR~*r6hX8
else 49Ue2=PP#
{ M+^K,
for(int i=0;i<nStartPos.length;i++) #(*WxVE
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); C5RDP~au
} LDvF)Eg
for(int i=0;i<nEndPos.length-1;i++) =-pss 47
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nEndPos = nStartPos[i+1]; AQ
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nEndPos[nEndPos.length-1] = nFileLength; e?lqs,m@"
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//启动子线程 '\*Rw]bR|
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; rrwsj`
for(int i=0;i<nStartPos.length;i++) TcfBfscU
{ Jp-ae0 Ewa
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), X)f"`$
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), kdYl>M
nStartPos,nEndPos,i); #1bgV
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 1v\-jM"
fileSplitterFetch.start(); M*S5&xpX
} T*T.\b
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Z%OS W
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); >;3c;nf
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 4QZy-a*tA
nEndPos = " + nFileLength);
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// fileSplitterFetch[nPos.length-1].start(); j'J*QK&Q
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//等待子线程结束 n
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//int count = 0; t+(CAP|,
//是否结束while循环 I3x}F$^
boolean breakWhile = false; %<muVRkB\
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while(!bStop) ,6buo~?W:
{ gq@."wHU
write_nPos(); N8{>M,
Utility.sleep(500); \4p<;$'
breakWhile = true; G\NCEE'A
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for(int i=0;i<nStartPos.length;i++) er#=xqUY
{ X0$_KPn
if(!fileSplitterFetch.bDownOver) 1a!h&!$9
{ T+ t-0k
breakWhile = false; L
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break; Fszk?0T
} B&$89]gs|
} ~3YNHm6V
if(breakWhile) 2$ rq
break; y d$37G|n
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//count++; "}EbA3
//if(count>4) f\^QV
// siteStop(); `3:%F>
} TatyD**(
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System.err.println("文件下载结束!"); D{l((t3=T
} NE4fQi?3
catch(Exception e){e.printStackTrace ();} i=a LC*@
} HW G~m:km
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//获得文件长度 FTfA\/tl(;
public long getFileSize() /fq6-;co+
{ PS22$_}
int nFileLength = -1; IXN4?=)I
try{ M5V1j(URE
URL url = new URL(siteInfoBean.getSSiteURL()); %ze1ZWO{
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); yBj)#m5!
httpConnection.setRequestProperty("User-Agent","NetFox"); K0g:Q*J-
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int responseCode=httpConnection.getResponseCode(); 3$cF)5V f
if(responseCode>=400) -DnK)u\@
{ hrD6r=JT<~
processErrorCode(responseCode); q':wSu u
return -2; //-2 represent access is error <.B s`P
} 8TPm[r]
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String sHeader; w0!,1
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for(int i=1;;i++) ,Tl5@RN
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); %}!}2s.A
//Utility.log(in.readLine()); n4 @a`lN5g
sHeader=httpConnection.getHeaderFieldKey(i); DV\ei")
if(sHeader!=null) g8"7wf`0k
{ h12wk2@P/]
if(sHeader.equals("Content-Length")) U08?*{
{ vWH>k+9&X
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ^BX@0"&-
break; RKkI/ Z0
} NR&9:?
} *"\Q ~#W
else m[j3s=Gr
break; Z5L1^
} uFWgq::\
} tJPRR_nZv
catch(IOException e){e.printStackTrace ();} )X;cS}
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catch(Exception e){e.printStackTrace ();} )<F\IM
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Utility.log(nFileLength); t`,IW{
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return nFileLength; <WJ0St
} gj,J3x4TK/
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//保存下载信息(文件指针位置) ';,Bn9rv
private void write_nPos() {7>CA'>
{ Rl4zTAI
try{ `;CU[Ps?]
output = new DataOutputStream(new FileOutputStream(tmpFile)); 7$W;4!BN*
output.writeInt(nStartPos.length); .p(l+
for(int i=0;i<nStartPos.length;i++) \_AEuz3
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{ &AcFa<U
// output.writeLong(nPos); #L:P
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output.writeLong(fileSplitterFetch.nStartPos); X,+}syK
output.writeLong(fileSplitterFetch.nEndPos); 6QXQ<ah"
} 6.s?
output.close(); wrYQ=u#Z
} rDX'oP:
catch(IOException e){e.printStackTrace ();} {IHK<aW
catch(Exception e){e.printStackTrace ();} aSkx#mV
} cC^C7AAq^
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//读取保存的下载信息(文件指针位置) UX`DZb+^
private void read_nPos() #6sC&w3
{ *P R_Y=v%
try{ .l=*R7~EU
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); S<!_
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int nCount = input.readInt(); |zq!CLjD@
nStartPos = new long[nCount]; G+ v, Hi1
nEndPos = new long[nCount]; Rgfhs[Z
for(int i=0;i<nStartPos.length;i++) }K80G~O2<
{ ^Lmc%y
nStartPos = input.readLong(); C'czXZtn
nEndPos = input.readLong(); nQ17E{^pR
} :LiDJF
input.close(); Z3So|M{v
} xY'qm8V
catch(IOException e){e.printStackTrace ();} CEuk1$
catch(Exception e){e.printStackTrace ();} M:Y*Tb6w
} O+p-1 C$\
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private void processErrorCode(int nErrorCode) 04PoBv~g
{ .k,Jt+
System.err.println("Error Code : " + nErrorCode); mzE$aFu8
} Mq:'-`
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//停止文件下载
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public void siteStop() gMBQtPNM
{ 4m~7 ~- h
bStop = true; Y3$PQwn
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for(int i=0;i<nStartPos.length;i++) 25a#eDbqi
fileSplitterFetch.splitterStop(); gO:Z6}3vM
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} 9c^skNbS
} ,3]?%t0xe
//负责部分文件的抓取 D<bU~Gd,P
**FileSplitterFetch.java { w8
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*/ HKiVEg
package NetFox; gJPDNZ*6pk
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import java.io.*; }-{ b$6]
import java.net.*; ;4kx >x*H
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public class FileSplitterFetch extends Thread { oB0 8
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String sURL; //File URL <,@H;|mZ
long nStartPos; //File Snippet Start Position x'2 ,sE
long nEndPos; //File Snippet End Position 4" ,
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int nThreadID; //Thread's ID O+o ;aa6
boolean bDownOver = false; //Downing is over 4aN+}TkH@G
boolean bStop = false; //Stop identical P#[IUXtT
FileAccessI fileAccessI = null; //File Access interface X"k^89y$
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException :_^0'ULP
{ cK|rrwa0
this.sURL = sURL; b~/Wnp5
this.nStartPos = nStart; AJ\VY;m7F
this.nEndPos = nEnd; D(qHf9
nThreadID = id; P(pd0,%i;a
fileAccessI = new FileAccessI(sName,nStartPos);//定位 ]HyHz9QkL
} CO:*x,6au
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public void run() Ehb?CnV#J
{ 9V=<| 2
while(nStartPos < nEndPos && !bStop)
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{ d<^_w!4X}
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try{ (Bt;DM#>
URL url = new URL(sURL); J[}gku?C;
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); &;ZC<