/* IhnHNY]<g
**SiteFileFetch.java <6QG7i
*/ uMVM- (g%
package NetFox; %|E'cdvkX
import java.io.*; WA}<Zme3[
import java.net.*; _J(n~"eR
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public class SiteFileFetch extends Thread { Atsi}zTR\
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SiteInfoBean siteInfoBean = null; //文件信息Bean 7?Q@Hj(:NT
long[] nStartPos; //开始位置 o#3?")>|
long[] nEndPos; //结束位置 y_EkW
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FileSplitterFetch[] fileSplitterFetch; //子线程对象 Tlrr02>B{
long nFileLength; //文件长度 IN=pki|.
boolean bFirst = true; //是否第一次取文件 VH[r@Pn
boolean bStop = false; //停止标志 |T?wM/
File tmpFile; //文件下载的临时信息 ,K9\;{C
DataOutputStream output; //输出到文件的输出流 3D_Ky Z~M+
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) io:g]g
public SiteFileFetch(SiteInfoBean bean) throws IOException zvjVM"=G
{ 0q'd }D W
siteInfoBean = bean; L[l?}\
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); rMXIw
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 'f&o%5]
if(tmpFile.exists ()) RrrW0<Ed
{ r@N 0%JZZ
bFirst = false; j
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read_nPos(); {Hncm
} -c-af%xD
else . K`OEdr<
{ wKF #8Y
nStartPos = new long[bean.getNSplitter()]; -
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nEndPos = new long[bean.getNSplitter()]; piYv}4;:(
} OQzJRu)mF#
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} q/y4HT,x
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public void run() H`u8}{7
{ ,M2u (9
//获得文件长度 $YZsaw
//分割文件 lv
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//实例FileSplitterFetch 1d/-SxhZ
//启动FileSplitterFetch线程
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//等待子线程返回 i0F.c\
try{ ~\= VSwJ
if(bFirst) [A$5~/Q{U1
{ &v!=\Fig4
nFileLength = getFileSize(); pR_cI]{=SA
if(nFileLength == -1) `nBCCz'Y!
{ x._IP,vRx^
System.err.println("File Length is not known!"); iVq4&X_x
} 5.gM]si
else if(nFileLength == -2) <viIpz2jh%
{ ,w~0U
System.err.println("File is not access!"); H I/]s^aL
} TU ]Ed*'&
else a<X8l^Ln
{ 49f- u
for(int i=0;i<nStartPos.length;i++) )"?6Es SF
{ %bI(
nStartPos = (long)(i*(nFileLength/nStartPos.length)); cBf9-k
} (Wkli:Lq
for(int i=0;i<nEndPos.length-1;i++) 9hAS#|vK
{ >Gbj1>C}
nEndPos = nStartPos[i+1]; xe^*\6Y
} 5,=Yi$x
nEndPos[nEndPos.length-1] = nFileLength; `@GqD
} RZ)sCR
} O+;0|4V%
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{ zoUU
//启动子线程 ~ILig}I
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; u2HkAPhD
for(int i=0;i<nStartPos.length;i++) @rs(`4QEh
{ xsK{nM6g
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ?f v?6r
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), _'&N0 1
nStartPos,nEndPos,i); v +-f
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Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ~82[pY
fileSplitterFetch.start(); _3$@s{k-TI
} t}-[^|)7
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 51yIW*
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); r})2-3ZA9
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ~XGO^P"?
nEndPos = " + nFileLength); h}xUZ:
// fileSplitterFetch[nPos.length-1].start(); j`^':!
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//等待子线程结束 XfA3Ez,}
//int count = 0; zM6yUEg
//是否结束while循环 3_=~7B)
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boolean breakWhile = false;
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while(!bStop) *Yv"lB8
{ Mq) n=M
write_nPos(); R_h(Z{d
Utility.sleep(500); E
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breakWhile = true; m1_?xU
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for(int i=0;i<nStartPos.length;i++) >JT{~SRB|Y
{ U`q[5U"
if(!fileSplitterFetch.bDownOver) ^B@4 w\t
{ zjgK78!<
breakWhile = false; gd<8RVA
break; Wu)ATs}
} Sp)KtMV
} SCeZt [
if(breakWhile) RAKQ+Y"nl
break; ANSv ZqKh
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//count++; []Cvma1\
//if(count>4) 6h>8^l
// siteStop(); \Ekez~k{`
} Qu]0BVIe
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System.err.println("文件下载结束!"); )hk=wu6
} g$VcT\X
catch(Exception e){e.printStackTrace ();} [rqe;00]
} qx
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//获得文件长度 =1^a/
public long getFileSize() ih`/1n
{ #%VprcEK
int nFileLength = -1; TUhp
try{ *pP"u::S
URL url = new URL(siteInfoBean.getSSiteURL()); 0kgK~\^,.O
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); YN] w_=
httpConnection.setRequestProperty("User-Agent","NetFox"); }7hpx!s,
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int responseCode=httpConnection.getResponseCode(); 'R_U,9y`
if(responseCode>=400) D,xWc|V
{ qt]QO1pAd
processErrorCode(responseCode); v,vTRrpK
return -2; //-2 represent access is error 0!=e1_
} 3sGrX"0D
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String sHeader; XBhWj\`(T
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for(int i=1;;i++) N-^\X3X
{ V.WfP*~NJ
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); /6{`6(p
//Utility.log(in.readLine()); B2d$!Any
sHeader=httpConnection.getHeaderFieldKey(i); > 0 !J]gK
if(sHeader!=null) 4\pA^%73
{ d1e'!y}R5
if(sHeader.equals("Content-Length")) w%S<N
{ 5K'EuI)
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 7i{Rn K6*
break; rQ}4\PTi
} qIjC-#a=m
} |L;'In
else :EgdV
break; N(vbo
} OpxVy _5,
} yD1*^~ loJ
catch(IOException e){e.printStackTrace ();} 2DQ'h}BI
catch(Exception e){e.printStackTrace ();} yE9JMi0
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Utility.log(nFileLength); F/j=rs,*|D
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return nFileLength; 7P/j\frW
} w2]1ftY
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//保存下载信息(文件指针位置) x(}t r27o
private void write_nPos() p5F[( H|9
{ ^%_B'X9
try{ 8YkP57Y%[Z
output = new DataOutputStream(new FileOutputStream(tmpFile)); 74gU4T
output.writeInt(nStartPos.length); H'gPGOd
for(int i=0;i<nStartPos.length;i++) lG#&Pv>-
{ K'?ab 0
// output.writeLong(nPos); |Q9S$l]
output.writeLong(fileSplitterFetch.nStartPos); 6FEtq,;0w
output.writeLong(fileSplitterFetch.nEndPos); /oiAAB27
} JS(KCY 9
output.close(); YD@V2gK
} tB(Q-c
catch(IOException e){e.printStackTrace ();} @1n0<V/
catch(Exception e){e.printStackTrace ();} VPN@q<BV
} 7/Lbs
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//读取保存的下载信息(文件指针位置) LV8,nTYvE
private void read_nPos() d,<ctd
{ !LIWoa[ F.
try{ t ?bq~!X
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); /SMp`Q88
int nCount = input.readInt(); S\0"G*
nStartPos = new long[nCount]; :\80*[=;Z
nEndPos = new long[nCount]; yrsP'th
for(int i=0;i<nStartPos.length;i++) }GkEv}~t
{ nWXI*%m5
nStartPos = input.readLong(); :Hd?0eZ|
nEndPos = input.readLong(); CWBsiL
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} ,}{E+e5jh7
input.close(); ?'T>/<(
} $Fr2oSTT)
catch(IOException e){e.printStackTrace ();} M8juab%y
catch(Exception e){e.printStackTrace ();} rcI(6P<*
} ;uoH+`pf
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private void processErrorCode(int nErrorCode) @.0jC=!l
{ #{h4lte
System.err.println("Error Code : " + nErrorCode); |{9"n<JW
} !]kn=7
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//停止文件下载 K03a@:
public void siteStop() <