/* VYkOJAEBg
**SiteFileFetch.java /ZZo`
*/ >|!F.W
package NetFox; E#r6e+e1Q%
import java.io.*; _)Q)tOW
import java.net.*; ed4:r/Dpo
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public class SiteFileFetch extends Thread { QIF|pZ+^
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SiteInfoBean siteInfoBean = null; //文件信息Bean |r 1\
long[] nStartPos; //开始位置 rOw""mE
long[] nEndPos; //结束位置 !HL7a]PB
FileSplitterFetch[] fileSplitterFetch; //子线程对象 (;P)oB"`C
long nFileLength; //文件长度 0G1?
boolean bFirst = true; //是否第一次取文件 .MMFN}1O
boolean bStop = false; //停止标志 Hv(0<k6oH
File tmpFile; //文件下载的临时信息 jDIO,XuF
DataOutputStream output; //输出到文件的输出流 |Y"q. n77
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) FGu:8`c9
public SiteFileFetch(SiteInfoBean bean) throws IOException VdQ}G!d
{ +4f>njARIb
siteInfoBean = bean; Bvzl*
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//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); q$e2x=?
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); EcrM`E#kaZ
if(tmpFile.exists ()) u _s
{ 6ND,4'6
bFirst = false; Zalgg/.
read_nPos(); -}1S6dzr
} 5Tluxt71
else XP
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{ S*Scf~Qp
nStartPos = new long[bean.getNSplitter()]; T[B@7$Dp*
nEndPos = new long[bean.getNSplitter()]; 4%~$A`7
} &Eg>[gAIlp
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} zg2A$Fd[j
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public void run() P!:Y<p{=>
{ TAlpy$
//获得文件长度 &K2[>5
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//分割文件 F.ryeOJ
//实例FileSplitterFetch B;Ab`UX#t
//启动FileSplitterFetch线程 5WgdgDb@L
//等待子线程返回 pbKDtqSnz
try{ Teu4 ;
if(bFirst) |[(4h
{ pL8+gL
nFileLength = getFileSize(); E.Xfb"]
if(nFileLength == -1) a h>k=t8(
{ QgO@oV* S
System.err.println("File Length is not known!"); {^>m3
} JYOyz+wNd
else if(nFileLength == -2) j':Ybr>BR
{ )Xg,;^
System.err.println("File is not access!"); H>_ FCV8
} A>(m}P
else n
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{ &N GYV
for(int i=0;i<nStartPos.length;i++) sh[Yu
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); FYR%>Em
} %5 0}oD@
for(int i=0;i<nEndPos.length-1;i++) P}N%**>`
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nEndPos = nStartPos[i+1]; HiCNs;t
} o{pQDI {R
nEndPos[nEndPos.length-1] = nFileLength; 96T.xT>&
} >w+WG0Z
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} ]S<eO6z
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//启动子线程 \NKf$"x}
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 'x{g P?.
for(int i=0;i<nStartPos.length;i++) j0^~="p%C
{ n(l!T
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), |4aV~n[>#
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ~V[pu
nStartPos,nEndPos,i); %s P C3L
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); )+RTA
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fileSplitterFetch.start(); 1O*5>dkX;%
} $wH{snX
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ;0O3b
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); q]YPDdR#
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 8hba3L_Z
nEndPos = " + nFileLength); 4]A2Jl
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// fileSplitterFetch[nPos.length-1].start(); |8PUmax
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//等待子线程结束 z:-a7_
//int count = 0; W_9-JM(r
//是否结束while循环 vt<r_&+ pJ
boolean breakWhile = false; W,5A|Q~
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while(!bStop) I!&|L0Qq
{ )9MmL-7K
write_nPos(); T^g2N`w2
Utility.sleep(500); I-oI,c%+
breakWhile = true; >(S4h}^I
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for(int i=0;i<nStartPos.length;i++) 2s>dlz
{ f9u ^/QVS&
if(!fileSplitterFetch.bDownOver) /:d03N\9k
{ _fha9`
breakWhile = false; ewg&DBbN"
break; .^j#gE&B
} >Lp^QP1gU
} 2ikY.Xi6
if(breakWhile) -hj@^Auf
break; #Mw|h^Wm
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//count++; |E-/b6G
//if(count>4) Vd~{SS2>
// siteStop(); Hq[d!qc
} )kR~|Yn<-
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System.err.println("文件下载结束!"); JUXIE y^
} Q*}#?g
catch(Exception e){e.printStackTrace ();} P1)f-:;
} EKoAIC*?p
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//获得文件长度 l|z
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public long getFileSize() %5V!Fdb
{ ['ol]ZJ
int nFileLength = -1; Wm$(b2t
try{ N|K,{
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URL url = new URL(siteInfoBean.getSSiteURL()); Q1J./C}
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); eWzD'3h^
httpConnection.setRequestProperty("User-Agent","NetFox"); H7n5k,
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int responseCode=httpConnection.getResponseCode(); /1
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if(responseCode>=400) s `fIeP
{ u,e'5,`N
processErrorCode(responseCode); P3V=DOG"
return -2; //-2 represent access is error BV,P;T0"D
} Cv862kP
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String sHeader; BoZ])Y6=
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for(int i=1;;i++) ?;@xAj
{ x4|>HY<p?
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); h1@|UxaE#
//Utility.log(in.readLine()); }[XzM/t
sHeader=httpConnection.getHeaderFieldKey(i); k<RJSK8
if(sHeader!=null) .WM 0x{t/
{ w^MU$ubx
if(sHeader.equals("Content-Length")) }MAQhXI^O|
{ y>wrm:b-O
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); B5h-JON]-
break; ^(y=DJ7
} ks|[`FH
} BqC, -gC
else S6CM/
break; =S/$h}Vi
} maQE Bi,
} }YJ(|z""
catch(IOException e){e.printStackTrace ();} 3"=% [
catch(Exception e){e.printStackTrace ();} 0jCYOl
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Utility.log(nFileLength); YfL|FsCh
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return nFileLength; Fgq"d7` 9@
} tn\Y:
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//保存下载信息(文件指针位置) 1];rW`Bw
private void write_nPos() N"MK 0k
{ cAq>|^f0a
try{ hNBv|&D#
output = new DataOutputStream(new FileOutputStream(tmpFile)); <![tn#_
output.writeInt(nStartPos.length); u4TU"r("A
for(int i=0;i<nStartPos.length;i++) oT2h'gu")
{ KtzoL#CT
// output.writeLong(nPos); -5,QrMM<
output.writeLong(fileSplitterFetch.nStartPos); @w&VI6
output.writeLong(fileSplitterFetch.nEndPos); p48M7OV
} 0STtwfTr:
output.close(); XH4!|wz
} `&$"oW{HW
catch(IOException e){e.printStackTrace ();} )1ia;6}
catch(Exception e){e.printStackTrace ();} JwWW w1
} *0]E4]ZO
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//读取保存的下载信息(文件指针位置) S|!)_RL
private void read_nPos() a@ `1 5O:
{ |_L\^T|6
try{ !xmvCH=2
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); WccTR
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int nCount = input.readInt(); `<&RZB2
nStartPos = new long[nCount]; cPA-EH
nEndPos = new long[nCount]; Pk/{~!+
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for(int i=0;i<nStartPos.length;i++) *A C){M
{ dr0<K[S_
nStartPos = input.readLong(); <>/0;J1<
nEndPos = input.readLong(); PD$XLZ
} z=1 J{]
input.close(); 'qcLK>E
} nEu,1
catch(IOException e){e.printStackTrace ();} h|OqM:J;
catch(Exception e){e.printStackTrace ();} -1).'aJ^
} N*z_rZE
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private void processErrorCode(int nErrorCode) q<(yNqMKP
{ [uCW8:e
System.err.println("Error Code : " + nErrorCode); =H&{*Ja
} 8 tMfh
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//停止文件下载 5&a4c"fU
public void siteStop()
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{ mh`~1aEr
bStop = true; Eukj2a
for(int i=0;i<nStartPos.length;i++) )RA$E`!b
fileSplitterFetch.splitterStop(); ]la8MaZ<