/* |eN#9Bm
**SiteFileFetch.java ~r/"w'dB
*/ Y7WxV>E
package NetFox; b2}>{Li0
import java.io.*; W62 $ HI
import java.net.*; N_dHPa
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public class SiteFileFetch extends Thread { P$YY4|`
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SiteInfoBean siteInfoBean = null; //文件信息Bean _?j66-(
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long[] nStartPos; //开始位置 |u r/6{Oj1
long[] nEndPos; //结束位置 3Go/5X/
FileSplitterFetch[] fileSplitterFetch; //子线程对象 p~Tp=d)/
long nFileLength; //文件长度 glMYEGz6p
boolean bFirst = true; //是否第一次取文件 jZjWz1+
boolean bStop = false; //停止标志 o!R.QI^2VT
File tmpFile; //文件下载的临时信息 ,g69 ?w
DataOutputStream output; //输出到文件的输出流 r[doN{%
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) cB$OkaG#
public SiteFileFetch(SiteInfoBean bean) throws IOException #'poDX?
{ z\S#P|;
siteInfoBean = bean; #[ei/p
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); /_WAF90R?
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); $Hw
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if(tmpFile.exists ()) D-{;;<nIr`
{ 'eyzH[l,(
bFirst = false; lk.]!K$}
read_nPos(); %7w=; ]ym
} w=NM==cLj
else " ^v/Y
{ noSkKqP
nStartPos = new long[bean.getNSplitter()]; _&(\>{pm
nEndPos = new long[bean.getNSplitter()]; xwuGJ
} [
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} 0bG[pp$[
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public void run() )b%t4~7
{ Lud[.>i
//获得文件长度 f ZEyXb
//分割文件 A-n@:` n~
//实例FileSplitterFetch Mi>!
//启动FileSplitterFetch线程 ZmLA4<
//等待子线程返回 ,/fB~On-
try{ FUt{-H!<
if(bFirst) \d'>Ky;GD
{ x;^DlyyYU
nFileLength = getFileSize(); _GhP{C$
if(nFileLength == -1) |IcA8[
{ 0oNNEC
System.err.println("File Length is not known!"); L3/SIoqd
} ^}w@&Bje
else if(nFileLength == -2) v3p0
{ *F<Ar\f5
System.err.println("File is not access!"); (Q]Ww_r~
} |wxAdPe
else DpRGPs
{ 5T*Uq>x0
for(int i=0;i<nStartPos.length;i++) OLH[F
{ W
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); OO?;??
} Ci-CY/]s
for(int i=0;i<nEndPos.length-1;i++) A#o ~nC<
{ zIzL7oD
nEndPos = nStartPos[i+1]; Y)O88C
} ugu|?z*dI
nEndPos[nEndPos.length-1] = nFileLength; YW14X
} x?"+Or.h
} T`zUgZ]
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//启动子线程 N9dx^+\
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; `{oFdvL~)
for(int i=0;i<nStartPos.length;i++) 5cUz^ >
{ ;b`kN;s
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), e,?qwZK:y
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), nF5\iV
nStartPos,nEndPos,i); HZawB25{
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Y5ZBP?P
fileSplitterFetch.start(); 3wYhDxY1
} g[c_rty
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), |j2$G~B6
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 7DZZdH$Fm
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", YHp]O+c
nEndPos = " + nFileLength); XLgp.w;
// fileSplitterFetch[nPos.length-1].start(); N,3 )`Vm
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//等待子线程结束 c]/X
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//int count = 0; S4Q
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//是否结束while循环 Nx;Oz
boolean breakWhile = false; 17E,Qnf
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while(!bStop) q/h, jM
{ ;u?L>(b
write_nPos(); (|2:^T+
Utility.sleep(500); Yq-Vwh/
breakWhile = true; l9Av@|
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for(int i=0;i<nStartPos.length;i++) 4n0Iw I
{ M:*)l(
if(!fileSplitterFetch.bDownOver) rqWD#FB=z
{ Z [YSET
breakWhile = false; ts/Ha*h
break; M\A6;dz'
} c6Z"6-}$
} o_sb+Vn|
if(breakWhile) ^2`*1el
break; j a'_syn
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//count++; Oj>;[O"
//if(count>4) Y#zHw<<E
// siteStop(); Gm[XnUR7V
} {%D4%X<
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System.err.println("文件下载结束!"); YJF|J2u
} lNo]]a+_
catch(Exception e){e.printStackTrace ();} ,R}9n@JI^Y
} 4C }#lW9
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//获得文件长度 tfdb9#&?
public long getFileSize() }_oQg_-7e
{ 5i-VnG
int nFileLength = -1; IOY<'t+
try{ *&~(>gNF,
URL url = new URL(siteInfoBean.getSSiteURL()); ,0@QBr5P
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 6f^IAa|
httpConnection.setRequestProperty("User-Agent","NetFox"); M%bD7naBq
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int responseCode=httpConnection.getResponseCode(); M Al4g+es
if(responseCode>=400) YRyaOrl$<
{ skF}_
processErrorCode(responseCode); L5wR4Ue)
return -2; //-2 represent access is error ^|(VI0KO
} MDoV84Fh
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String sHeader; Y+DVwz$
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for(int i=1;;i++) H`4KhdqR
{ riQ0'-p
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); {$I1(DYN
//Utility.log(in.readLine()); L=gG23U&
sHeader=httpConnection.getHeaderFieldKey(i); @CS%=tE}U
if(sHeader!=null) A}[x))r
{ "}2I0tM
if(sHeader.equals("Content-Length")) Q>I7.c-M|
{ z,RjQTd
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); CQs,G8\/
break; p@eW*tE
} C,B{7s0-
} mM'uRhO+
else mZ g'
break; C6qGCzlG`
} A+KpECP
} -ZoAbp$
catch(IOException e){e.printStackTrace ();} UlPhW~F)
catch(Exception e){e.printStackTrace ();} y;fnC5Q
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Utility.log(nFileLength); )O8w'4P5
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return nFileLength; IeAi '
} p:
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//保存下载信息(文件指针位置) y
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private void write_nPos() H-3*},9
{ /}k?Tg/
try{ )BZ6QO`5n
output = new DataOutputStream(new FileOutputStream(tmpFile)); sY* qf=
output.writeInt(nStartPos.length); ~&D5RfK5f
for(int i=0;i<nStartPos.length;i++) B.}j1Bb
{ zd=N.
// output.writeLong(nPos); x,c\q$8yH
output.writeLong(fileSplitterFetch.nStartPos); _opB,,G
output.writeLong(fileSplitterFetch.nEndPos); $49;\pBZl
} #Eqx Eo;
output.close(); XdE|7=+s
} s0'6r$xj
catch(IOException e){e.printStackTrace ();} SP4(yJy&
catch(Exception e){e.printStackTrace ();} P&Wf.qr{:
} SmV}Wf
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//读取保存的下载信息(文件指针位置) rxOvYF
private void read_nPos() HE-ErEtGB
{ Ah;`0Hz;
try{ X.AE>fx*h
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); hLaQ[9
int nCount = input.readInt(); F#z1 sl'
nStartPos = new long[nCount]; Fnuheb'&m
nEndPos = new long[nCount]; #'I<q
for(int i=0;i<nStartPos.length;i++) >vDi,qmZ
{ ]) #?rRw
nStartPos = input.readLong(); ]Aj5 K
nEndPos = input.readLong(); ITZ}$=
} {5(M
input.close(); vofBS
} EJ(z]M`f
catch(IOException e){e.printStackTrace ();} NW`Mc&
catch(Exception e){e.printStackTrace ();} REPI>-|
} /}S1e P6
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private void processErrorCode(int nErrorCode) >fp_$bjd
{ VqS1n
System.err.println("Error Code : " + nErrorCode); VP^{-mDph
} o97*3W]
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//停止文件下载 >[<f\BN|
public void siteStop() o`nJJ:Cxq-
{ |5*:ThC[
bStop = true; 0NXaAf:2Z
for(int i=0;i<nStartPos.length;i++) '\P+Bu]6&
fileSplitterFetch.splitterStop(); [6%y RQ_
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} +<3e@s&
} ?Skv2!X|
//负责部分文件的抓取 ]:Pkh./
**FileSplitterFetch.java 1n#{c5T
*/ )H{OqZZYD
package NetFox; ;pG5zRe
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import java.io.*; `m\ ?gsw7
import java.net.*; R.rE+gxO1
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public class FileSplitterFetch extends Thread { .8XkB<[wb
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String sURL; //File URL RA}Y$ }^#'
long nStartPos; //File Snippet Start Position `rpmh7*WV
long nEndPos; //File Snippet End Position v"dl6%D"
int nThreadID; //Thread's ID B
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boolean bDownOver = false; //Downing is over US&:UzI.
boolean bStop = false; //Stop identical B~%SB/eu
FileAccessI fileAccessI = null; //File Access interface 9w-;d=(Q
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException "Jg*
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{ d V3R)
this.sURL = sURL; T5aeO^x
this.nStartPos = nStart; "MDy0Tj8EN
this.nEndPos = nEnd; X`7O%HiX/`
nThreadID = id; Hm_&``='
fileAccessI = new FileAccessI(sName,nStartPos);//定位 =j8g6# 'u
} uy([>8uu
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public void run() rrl{3
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{ WB" 90!
while(nStartPos < nEndPos && !bStop) ;MW=F9U*
{ :Y4G^i
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try{ Q'rX ]kk_
URL url = new URL(sURL); W1[C/dDc
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); sX(rJLbD
httpConnection.setRequestProperty("User-Agent","NetFox"); *!,k`=.([#
String sProperty = "bytes="+nStartPos+"-"; @XH@i+{B
httpConnection.setRequestProperty("RANGE",sProperty); Gk)6ljL
Utility.log(sProperty); g?>
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InputStream input = httpConnection.getInputStream(); !{XVaQ?x
//logResponseHead(httpConnection); cB2~W%H
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byte[] b = new byte[1024]; Zrq\:KxX
int nRead; 6W)#FO`
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) tA-p!#V<k1
{ v#9Uy}NJ9
nStartPos += fileAccessI.write(b,0,nRead); qO>A6
//if(nThreadID == 1) vcSb:('
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); MwWN;_#EO)
} NZuylQ)0
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Utility.log("Thread " + nThreadID + " is over!"); BsYJIKfW
bDownOver = true; _+qtH< F/
//nPos = fileAccessI.write (b,0,nRead); 2MDY nMy
} `%=!_|
catch(Exception e){e.printStackTrace ();} ];Y tw6A
} V.w!]{xm
} |L6 +e*
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//打印回应的头信息 jk5C2dy
public void logResponseHead(HttpURLConnection con) \5F
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{ U.J/ "}5`T
for(int i=1;;i++) ?DC;Hk<
{ &FDWlrGg
String header=con.getHeaderFieldKey(i); =2d h}8Mz
if(header!=null) }1YQ?:@
//responseHeaders.put(header,httpConnection.getHeaderField(header)); 'l._00yu
Utility.log(header+" : "+con.getHeaderField(header)); _@sSVh$+
else ?YnB:z*eV
break; %kiPE<<x
} zC!Pb{IaH
} 8o,"G}Hjk
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public void splitterStop() XI5q>cd\Sz
{ e;&f