/* =*'K'e>P3
**SiteFileFetch.java 5m\T~[`%
*/ 'p> *4}
package NetFox; gu|cQ2xV
import java.io.*; Qs
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import java.net.*; wxW\L!@
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public class SiteFileFetch extends Thread { I?~iEO\nh
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SiteInfoBean siteInfoBean = null; //文件信息Bean NB#-W4NA
long[] nStartPos; //开始位置 4lsg%b6_%,
long[] nEndPos; //结束位置 3?Tk[m1b
FileSplitterFetch[] fileSplitterFetch; //子线程对象 Dqg~g|(Q<
long nFileLength; //文件长度 M
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boolean bFirst = true; //是否第一次取文件 .j l|?o
boolean bStop = false; //停止标志 X0&[cyP!
File tmpFile; //文件下载的临时信息 D%,AdR"m
DataOutputStream output; //输出到文件的输出流 fKQq]&~
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) "qxu9Hg!
public SiteFileFetch(SiteInfoBean bean) throws IOException En:/{~9{F
{ |9x H9@^f
siteInfoBean = bean; >og-
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//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 0hoi=W6AQ
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); U{|WN7Q:A
if(tmpFile.exists ()) o^*k
{ qrt2BT)
bFirst = false; jFPD SR5
read_nPos(); "inXHxqu/J
} Y!*F-v@
else Fo$'*(i
{ d"~-D;
nStartPos = new long[bean.getNSplitter()]; {~a+dEz
nEndPos = new long[bean.getNSplitter()]; *c{X\!YBh
} #*)X+*
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} vC|V8ea
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public void run() )a0%62
{ ;($" _h
//获得文件长度 m{{8#@g
//分割文件 F?*ko,
//实例FileSplitterFetch JR^#NefJ
//启动FileSplitterFetch线程 yf@DaIG
//等待子线程返回 Unc_e
try{ )D>= \Me
if(bFirst) *wNO3tP't
{ 5 4vDP 9
nFileLength = getFileSize(); x-Ug(/!^
if(nFileLength == -1) S :%SarhBD
{ *fg|HH+i
System.err.println("File Length is not known!"); p6|RV(?8
} p8_
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else if(nFileLength == -2) /KLs+^c5
{ 9n!IdqKN
System.err.println("File is not access!"); }n[<$*W^
} k%2Rv4)hU
else n7*.zI]%&
{ DVLF8]5
for(int i=0;i<nStartPos.length;i++) /+zzZnLl-M
{ 6>R|B?I%
nStartPos = (long)(i*(nFileLength/nStartPos.length)); 9aKt (g6
} R\^XF8n6/
for(int i=0;i<nEndPos.length-1;i++) ml\2%07
{ H%^j yGS
nEndPos = nStartPos[i+1]; c$AwJhl^]
} 3Sh#7"K3
nEndPos[nEndPos.length-1] = nFileLength; aZBb@~Y
} 4b<>gpQ
} R^ &nBwp
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//启动子线程 29~Bu5
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 2Pz)vnV"
for(int i=0;i<nStartPos.length;i++) NU{`eM
{ N "Mw1R4
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ux=0N]lc
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), A$;"9F@
nStartPos,nEndPos,i); %IhUQ6
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); *!-J"h
fileSplitterFetch.start(); 9W+RUh^W
} KE*8Y4#9
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 9?L,DThQ
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 9Atnnx]n
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", NR|t~C+
nEndPos = " + nFileLength); /@`kM'1:
// fileSplitterFetch[nPos.length-1].start(); sBV})8]KM
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//等待子线程结束 V9cKl[
//int count = 0; =}^J6+TVL
//是否结束while循环 4ht+u
boolean breakWhile = false;
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while(!bStop) qrxn%#\XP
{ /lqVMlz\77
write_nPos(); j|X>:!4r
Utility.sleep(500); Exu>%
breakWhile = true; zc#$hIi
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for(int i=0;i<nStartPos.length;i++) .QVZ!
{ "B"Yfg[
if(!fileSplitterFetch.bDownOver) ( {}Z
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{ *%;+3SV
breakWhile = false; RwyRPc_
break; `Eq~W@';Q0
} MeMSF8zSQ
} f tE2@}
if(breakWhile) Ptj[9R
break; rmh 1.W
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//count++; ;(I')[R"
//if(count>4) EnD}|9
// siteStop(); .{ +Obi
} KYN{Dh]-}
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System.err.println("文件下载结束!"); ?Q#yf8
} Q-7C'|
catch(Exception e){e.printStackTrace ();} j,@@[{tu
} LUN"p#1
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//获得文件长度 waRK$/b
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public long getFileSize() ^P p2T
{ S%{^@L+V
int nFileLength = -1; 7 S6@[-E
try{ &upM,Jsr*
URL url = new URL(siteInfoBean.getSSiteURL()); CYFi_6MFl
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); /t"FZ#
httpConnection.setRequestProperty("User-Agent","NetFox"); O4lHR6M2
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int responseCode=httpConnection.getResponseCode(); Pua|Z
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if(responseCode>=400) {>rGe#Vu
{ wR]jJbF
processErrorCode(responseCode); ?CU6RC n
return -2; //-2 represent access is error ?=#vp /
} o +KDK{MD
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String sHeader; HmQ.'
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for(int i=1;;i++) mJN*DP{
{ H.=S08c3kA
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); g*]/HS>e<G
//Utility.log(in.readLine()); ;:DDz
sHeader=httpConnection.getHeaderFieldKey(i); QMAineO
if(sHeader!=null) 2/F";tc\'
{ i&_&4
if(sHeader.equals("Content-Length")) TG^?J`
{ SR8)4:aKW
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); Q!*}^W
break; |S0nR<x-M
} 1~aP)q
} o4PJ9x5R!
else ~4^~w#R
break; n> tru L
} [ ~&yLccN
} ~OSgpM#O!T
catch(IOException e){e.printStackTrace ();} b<bj5m4fz>
catch(Exception e){e.printStackTrace ();} [Rxbb+,U
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Utility.log(nFileLength); Q/zlU@
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return nFileLength; E>I\m!ue
} )Bw}T
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//保存下载信息(文件指针位置) 50jZu'z:
private void write_nPos() )Gm,%[?2C
{ $~c
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try{ scQnL'\
output = new DataOutputStream(new FileOutputStream(tmpFile)); '^!#*O
output.writeInt(nStartPos.length); RzOcz=A}
for(int i=0;i<nStartPos.length;i++) tN1xZW:
{ Nbvs_>N
// output.writeLong(nPos); .$"13"
output.writeLong(fileSplitterFetch.nStartPos); KBOp}MEz
output.writeLong(fileSplitterFetch.nEndPos); h"3Mj*s
} N(Sc!rX
output.close(); +oev NM
} \`U=pZJ
catch(IOException e){e.printStackTrace ();} XT%\Ce!
catch(Exception e){e.printStackTrace ();} 6"YcM:5~
} pt$\pQ
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//读取保存的下载信息(文件指针位置) (|9t+KP
private void read_nPos() G$mAyK:
{ /P%OXn$i/
try{ 5_7y 1
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Aw$+Ew[8 2
int nCount = input.readInt(); [jEZ5]%
nStartPos = new long[nCount]; iu.v8I;<
nEndPos = new long[nCount]; c]%~X&Tg`
for(int i=0;i<nStartPos.length;i++) w<&R|= 93
{ K;Fs5|gFU
nStartPos = input.readLong(); A@<a')#>)
nEndPos = input.readLong(); ?Gqq]ozm
} z3Zo64V~7
input.close(); 38#Zlcf
} 8_Nyy/K#F
catch(IOException e){e.printStackTrace ();} \@B'f
catch(Exception e){e.printStackTrace ();} G_]zymXQ
} _)kTlX:,
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private void processErrorCode(int nErrorCode) %zz,qs)Eu
{ x/dyb.
System.err.println("Error Code : " + nErrorCode);
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} )_olJCdaP^
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//停止文件下载 aqEmF
public void siteStop() {/}%[cY=
{ D/YMovH%
bStop = true; i_e%HG
for(int i=0;i<nStartPos.length;i++) yu>)[|-
fileSplitterFetch.splitterStop(); oJ?,X^~_
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} 19b@QgfWpb
} es^@C9qt
//负责部分文件的抓取 QpD-%gN
**FileSplitterFetch.java jS ?#c+9
*/ 0[]) wl
package NetFox; V+5av Z}
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import java.io.*; p1UYkmx[
import java.net.*; B~B, L*kC2
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public class FileSplitterFetch extends Thread { />n!2'!
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String sURL; //File URL "`NAg
long nStartPos; //File Snippet Start Position ]P/i}R:
long nEndPos; //File Snippet End Position #>M^BOR8
int nThreadID; //Thread's ID K7X*N
boolean bDownOver = false; //Downing is over 2m^qXE$
boolean bStop = false; //Stop identical eLIZ<zzW0}
FileAccessI fileAccessI = null; //File Access interface X-*LA*xbN
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException *ze,X~8-
{ V|G*9^Y
this.sURL = sURL; UD=[::##
this.nStartPos = nStart; q P0UcG
this.nEndPos = nEnd; D"gv:RojD
nThreadID = id; C8W_f( i~
fileAccessI = new FileAccessI(sName,nStartPos);//定位 OS-k_l L
} f0879(,i
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public void run() RzU9]e
{ +Sc2'z>R
while(nStartPos < nEndPos && !bStop) NL,6<ZOon,
{ ^5Zka!'X2Z
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try{ Y-lwS-Ii
URL url = new URL(sURL); OLo?=1&;;
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ^WF_IH&
httpConnection.setRequestProperty("User-Agent","NetFox"); aLl=L_
String sProperty = "bytes="+nStartPos+"-"; %l,CJd5
httpConnection.setRequestProperty("RANGE",sProperty); 7K ~)7U
Utility.log(sProperty); pk`5RDBu
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InputStream input = httpConnection.getInputStream(); 31\mF\{V
//logResponseHead(httpConnection); Z;S)GUG^
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byte[] b = new byte[1024]; jn`5{ ]D
int nRead; #"8'y
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) z%BX^b$Hj
{ >;l rH&
nStartPos += fileAccessI.write(b,0,nRead); -24ccN;
//if(nThreadID == 1) P_5 G'[
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Cn0s?3Fm
} -/
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Utility.log("Thread " + nThreadID + " is over!"); qHgzgS7a
bDownOver = true; Kn1T2WSAg
//nPos = fileAccessI.write (b,0,nRead); `6RccEm
} TqSjL{l%
catch(Exception e){e.printStackTrace ();} X#Ob^E%J
} v,Zoy|Lu
} [kTckZv
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//打印回应的头信息 6q8PLyIp
public void logResponseHead(HttpURLConnection con) r9*6=*J|
{ YeVo=hYH@
for(int i=1;;i++) EEMRy
{ E62_k
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String header=con.getHeaderFieldKey(i); ;O|u`fAqT
if(header!=null) Rn`DUYg
//responseHeaders.put(header,httpConnection.getHeaderField(header)); 9R">l5u
Utility.log(header+" : "+con.getHeaderField(header)); 8
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else &O#1*y
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break; RP^vx`9h
} QyY<Zi;6
} sgnc$x"
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public void splitterStop() unNN&m#@
{ NB5lxaL
bStop = true; %%#bTyF
} <Ql2+ev6
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} cj^hwtx
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/* F(ZczwvR
**FileAccess.java >^IUS8v
*//文件访问(定位,写) Lxv6\3I+
package NetFox; {;m|\652B
import java.io.*; of
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public class FileAccessI implements Serializable{ ;JMmr-@
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//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 X 4!Jj*
RandomAccessFile oSavedFile; `
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long nPos; :6Tv4ZUvcG
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public FileAccessI() throws IOException 4)>S3Yr
{ xJnN95`R@
this("",0); ;.rY`<|
} JStEOQF4
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public FileAccessI(String sName,long nPos) throws IOException mB6%. "
{ GctV
oSavedFile = new RandomAccessFile(sName,"rw"); OEX\]!3_Fm
this.nPos = nPos; LPZ\T}<l
oSavedFile.seek(nPos); =6f)sZpPh
} 0P!Fci/t
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public synchronized int write(byte[] b,int nStart,int nLen) !N_eZPU.v
{ US"UkY-\
int n = -1; Pp_? z0M
try{ Ra6 }<o
oSavedFile.write(b,nStart,nLen); rZ)7(0BBs
n = nLen; )D)4=LJ
} {t.S_|IE
catch(IOException e) RTDplv; ]
{ A0,e3gb
e.printStackTrace (); _
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} hs:iyr]@9
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return n; Z6Z/Y()4Tl
} }W(t>>
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} P_H_\KsH*(
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/* e\f\CMb
**SiteInfoBean.java e.#,9
*/ (d*||"
package NetFox; QC&,C}t,
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public class SiteInfoBean { ts("(zI1E
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private String sSiteURL; //Site's URL feeHXKD|
private String sFilePath; //Saved File's Path U!K#g_}
private String sFileName; //Saved File's Name QUfF>,[sv
private int nSplitter; //Count of Splited Downloading File W7@Vma`
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public SiteInfoBean() uq7/G|
{//nSplitter的缺省值为5 #l.s>B4
//default value of nSplitter is 5 OECVExb@eH
this("","","",5); yu>;m.e_
} J!dv"Ww"
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) -V[!qI
{ Tj\hAcD
sSiteURL= sURL; Fg}t{e]3a
sFilePath = sPath; ]scr@e
sFileName = sName; O*x~a;?G
this.nSplitter = nSpiltter; +
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} +"JWsD(C(
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public String getSSiteURL() :_nGh]%
{ ~"4Cz27
return sSiteURL; %M`zkA2]J
} Asq&Z$bB_
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public void setSSiteURL(String value) ZP&iy$<L
{ /TIt-c
sSiteURL = value; Z:V<