/* }@+:\
**SiteFileFetch.java "5wa91*
*/ _t #k,;
package NetFox; 9c :cw
import java.io.*; ` v@m-j6
import java.net.*; ~AT'[(6
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public class SiteFileFetch extends Thread { `,TzQ
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SiteInfoBean siteInfoBean = null; //文件信息Bean 9e,0\J
long[] nStartPos; //开始位置 JB[~;nLlC
long[] nEndPos; //结束位置 )C]gld;8
FileSplitterFetch[] fileSplitterFetch; //子线程对象 hp-<2i^"!
long nFileLength; //文件长度 Y^EcQzLw
boolean bFirst = true; //是否第一次取文件 dvJM6W>^=
boolean bStop = false; //停止标志 >_"an~Ss
File tmpFile; //文件下载的临时信息 $6iX
DataOutputStream output; //输出到文件的输出流 2)HuZda
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 'F0e(He@,
public SiteFileFetch(SiteInfoBean bean) throws IOException Ks`J([(W&
{ T!WT;A
siteInfoBean = bean; AogVF
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); !\.pq 2
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ^N{h3b8
if(tmpFile.exists ()) *]/zc1Q4M
{ &H/'rd0M
bFirst = false; D (?DW}Rqs
read_nPos(); GM f
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} A!WKnb_`
else z !rL
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nStartPos = new long[bean.getNSplitter()]; DKJmTH]rUg
nEndPos = new long[bean.getNSplitter()]; fN^8{w/O
} \B,@`dw
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} My[pr_xg
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public void run() +V046goX W
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//获得文件长度 |AU~_{H
//分割文件 hVAn>_(
//实例FileSplitterFetch s/ qYa])
//启动FileSplitterFetch线程 tq6!`L }3
//等待子线程返回 a:IC)]j$_
try{ EPM-df!=
if(bFirst) 9oR@UW1
{ ;1O_M9
nFileLength = getFileSize(); jrr*!^4|
if(nFileLength == -1) Mhf5bN|wQ
{ &n}f?
System.err.println("File Length is not known!"); qCpp6~]Um
} }1i`6`y1
else if(nFileLength == -2) VfC <WVYiZ
{ &zeyE;/Hj
System.err.println("File is not access!"); O6a<`]F
} _w+:Dv~*a
else ipgC RHE
{ j8{i#;s!"
for(int i=0;i<nStartPos.length;i++) `WFw3TI
{ f:|1_ j
nStartPos = (long)(i*(nFileLength/nStartPos.length)); J1RJ*mo7,
} GmEJhr.3`=
for(int i=0;i<nEndPos.length-1;i++) cyv`B3}
{ Z=Y& B>:[
nEndPos = nStartPos[i+1]; 6@ IXqKz
} )SRefW.v
nEndPos[nEndPos.length-1] = nFileLength; QP8Ei~
} ujq=F
} 6/Xk7B
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//启动子线程 "ZoRZ'i
fileSplitterFetch = new FileSplitterFetch[nStartPos.length];
}mq6]ZrK
for(int i=0;i<nStartPos.length;i++) dIa+K?INX
{ " H&W}N
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ex9g?*Q
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), #9}D4i.`}
nStartPos,nEndPos,i); u#;7<.D
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); (%e.:W${
fileSplitterFetch.start(); 2%@4]
} ukfQe }I
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), wb5baY9
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); *,8^@(th
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", OSWYGnZg
nEndPos = " + nFileLength); zrL$]Oy}x
// fileSplitterFetch[nPos.length-1].start(); w/S%YW3*
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//等待子线程结束 Z/;(fL
//int count = 0; >WQMqQ^t@
//是否结束while循环 NI}yVV
boolean breakWhile = false; st3l2Q
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while(!bStop) l7259Ro~
{ 7BjJhs
write_nPos(); (Hz^)5(~
Utility.sleep(500); ZaDyg"Tw+
breakWhile = true; # 448-8x
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for(int i=0;i<nStartPos.length;i++) [.8BTj1%
{ %C'?@,7C
if(!fileSplitterFetch.bDownOver) YpZ+n*&+
{ W5lR0)~#*
breakWhile = false; H*QIB_
break; zyc"]IzOU
} c~$)UND^
} o]` *M|
if(breakWhile) djQH1^(IU
break; 4(~L#}:r!
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//count++; 7he,?T)vD
//if(count>4) T`.O'!
// siteStop(); Lh"<XYY
} f/NH:1)y
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System.err.println("文件下载结束!"); 1N^[.=
} ^f
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catch(Exception e){e.printStackTrace ();} #`iB`|
} .hP D$o
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//获得文件长度 NP#w+Qw
public long getFileSize() /k6MzFoid
{ *{@Nq=fE
int nFileLength = -1; u\x}8pn
try{ *@r/5pM2}
URL url = new URL(siteInfoBean.getSSiteURL()); dvx#q5f_S
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ooL!TSGD
httpConnection.setRequestProperty("User-Agent","NetFox"); bv9]\qC]T<
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int responseCode=httpConnection.getResponseCode(); <#y[gTJ<'>
if(responseCode>=400) 88gM?G _X
{ gQelD6c
processErrorCode(responseCode); [0[i5'K:
return -2; //-2 represent access is error H8^(GUhyp
} eRstD>r
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String sHeader; 5 +YH.4R
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for(int i=1;;i++) vq0Tk
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{ 2dcV"lY
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); E`0?
//Utility.log(in.readLine()); C8:f_mJU
sHeader=httpConnection.getHeaderFieldKey(i); r1m]HFN
if(sHeader!=null) ]z;I_-
{ /?'FE 7Y
if(sHeader.equals("Content-Length")) #7$
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{ eIEeb,#i
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); q&-`,8#
break; |`,2ri*5A
} \fr~
} IH&|Tcf\
else 7P5)Z-K[
break; +wU@ynw
} F>6|3bOR
} =^f<v_L
catch(IOException e){e.printStackTrace ();} FZ<gpIv!NS
catch(Exception e){e.printStackTrace ();} n;C
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Utility.log(nFileLength); LTCb@L{^i
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return nFileLength; S9D<8j^
} #PW9:_BE
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//保存下载信息(文件指针位置) $q{!5-e
private void write_nPos() _QE qk@ql
{ x7w4[QYw
try{ ")5":V~fN
output = new DataOutputStream(new FileOutputStream(tmpFile)); Al^d$FaF
output.writeInt(nStartPos.length); l
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for(int i=0;i<nStartPos.length;i++) {n.PF8A5X
{ !cLo>,4
// output.writeLong(nPos); 7\[@m3s
output.writeLong(fileSplitterFetch.nStartPos); 8.=BaNU
output.writeLong(fileSplitterFetch.nEndPos); =.U[$~3q%
} q=m'^
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output.close(); oj<gD
} $am$EU?s
catch(IOException e){e.printStackTrace ();} Xp% v.M
catch(Exception e){e.printStackTrace ();} wqs?828x
} Hqx-~hQO
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//读取保存的下载信息(文件指针位置) [`[|l
private void read_nPos() #&k5d:
{ JPUW6e07o
try{ ,0Hr2*p
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); mh#a#<
int nCount = input.readInt(); 4G0m\[Du
nStartPos = new long[nCount]; )}(^,
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nEndPos = new long[nCount]; |O+H[;TB6
for(int i=0;i<nStartPos.length;i++) )
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{ +oML&g-g_
nStartPos = input.readLong(); gp?uHKsM
nEndPos = input.readLong(); 6ex/TySM
} : /N0!&7
input.close(); /NFj(+&g+
} Fb>?1i`RN
catch(IOException e){e.printStackTrace ();} 1{.|+S Z!
catch(Exception e){e.printStackTrace ();} `?@}>.
} GPudaF{
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private void processErrorCode(int nErrorCode) n\'4
{ 1#2 I
System.err.println("Error Code : " + nErrorCode); MUc$j&
} @ioJ]$o7
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//停止文件下载 g2ixx+`?|:
public void siteStop() Y('#jU
{ hH3RP{'=
bStop = true; {9pZ)tB
for(int i=0;i<nStartPos.length;i++) N!=v4f
fileSplitterFetch.splitterStop(); pa3{8x{9m
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} itP,\k7>d
} *#|&JIEsi
//负责部分文件的抓取 _8J.fT$${
**FileSplitterFetch.java p38-l'{#
*/ !;{7-~
package NetFox; HM1Fz\Sf
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import java.io.*; ie95rZp
import java.net.*; iHf $
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public class FileSplitterFetch extends Thread { 4l'fCZhA}
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String sURL; //File URL _6hQ %hv8
long nStartPos; //File Snippet Start Position F~W6Bp^W
long nEndPos; //File Snippet End Position ueWEc^_>
int nThreadID; //Thread's ID 3(N$nsi
boolean bDownOver = false; //Downing is over NwvC[4
boolean bStop = false; //Stop identical ,/2Vt/lt
FileAccessI fileAccessI = null; //File Access interface xm~`7~nFR
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 4k1xy##
{ J!(<y(l
this.sURL = sURL; G>}255qY
this.nStartPos = nStart; gZXi]m&
this.nEndPos = nEnd; AV]2euyn
nThreadID = id; my1@41
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fileAccessI = new FileAccessI(sName,nStartPos);//定位 l|[N42+
} *:7rdzn
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public void run() ^uc=f2=>,
{ G e@{_
while(nStartPos < nEndPos && !bStop) iWkWR"ysy
{ h,N?Ab'S
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try{ ]s'as9s9
URL url = new URL(sURL); u&vf+6=9Dd
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Hvi49c]]
httpConnection.setRequestProperty("User-Agent","NetFox"); +\]\[6
String sProperty = "bytes="+nStartPos+"-";
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httpConnection.setRequestProperty("RANGE",sProperty); <'Eme
Utility.log(sProperty); g:@#@1rB6
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InputStream input = httpConnection.getInputStream(); ^{`exCwMx
//logResponseHead(httpConnection); .~;\eW [
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byte[] b = new byte[1024]; ,&.!?0+
int nRead; !;A\.~-!G
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) ;$|nrwhy
{ PC8Q"O
nStartPos += fileAccessI.write(b,0,nRead);
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//if(nThreadID == 1) hn@08t G
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); cV6D<,)
} KV *#T20T
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Utility.log("Thread " + nThreadID + " is over!"); + &Eqk
bDownOver = true; .L~AL|2_
//nPos = fileAccessI.write (b,0,nRead); (w3YvG.
} 2/^3WY1U
catch(Exception e){e.printStackTrace ();} </zEg3F\
} C,r;VyW6BI
} *i%d,w0+
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//打印回应的头信息 Ui W>J
public void logResponseHead(HttpURLConnection con) g!|kp?
{ =dKtV.L
for(int i=1;;i++) _B<X`L
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{ rb.N~
String header=con.getHeaderFieldKey(i); #;e:A8IQ
if(header!=null) 6bC3O4Rw
//responseHeaders.put(header,httpConnection.getHeaderField(header)); x 9fip-
Utility.log(header+" : "+con.getHeaderField(header));
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else -Q*gW2KmV
break; 5t]H?b8
} 24eLB?H
} q0vQa
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public void splitterStop() }Sv:`9=
{ T0)@pt7>
bStop = true; 0GeTSFj
} aW7^d'ZZ\
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} 4!?eRY
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/* +mn[5Y} :
**FileAccess.java q/,O\,
*//文件访问(定位,写) X \/#@T
package NetFox; NBGH_6DROw
import java.io.*; kuP(r
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public class FileAccessI implements Serializable{ t{{QE:/
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//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 5$k:t
RandomAccessFile oSavedFile; [4f{w%~^
long nPos; j\M?~=*w
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public FileAccessI() throws IOException Gd85kY@w7
{ gcT%c|.
this("",0); ?Ir:g=RP*
} ym1Y4,
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public FileAccessI(String sName,long nPos) throws IOException nu%*'.
{ wibNQ`4k
oSavedFile = new RandomAccessFile(sName,"rw"); cvL;3jRo
this.nPos = nPos; s~X%Y<9l
oSavedFile.seek(nPos); =I_'.b
} cr;da)
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public synchronized int write(byte[] b,int nStart,int nLen) Nh44]*
{ ?:0Jav
int n = -1; sYA1\YIii
try{ BI@[\aRLQ
oSavedFile.write(b,nStart,nLen); $I?"lky
n = nLen; >A"(KSNL
} pQB."[n
catch(IOException e) y6BAH
{ V0mn4sfs
e.printStackTrace (); Ny/MJ#Lq
} Mi_$">1-W
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return n; %W S+(0*1
} JBZ@'8eqi]
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} ns4,@C$
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/* FS1z`wYP
**SiteInfoBean.java E]r?{t`]
*/ w0unS`\4
package NetFox; |R:'\+E
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public class SiteInfoBean { WNc0W>*NE1
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private String sSiteURL; //Site's URL f|(M.U-
private String sFilePath; //Saved File's Path xT2PyI_:
private String sFileName; //Saved File's Name I]q% 2ie
private int nSplitter; //Count of Splited Downloading File K*d Cc}:`
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public SiteInfoBean() >yDZw!C
{//nSplitter的缺省值为5 Y_P!B^z3
//default value of nSplitter is 5 |y!A&d=xYn
this("","","",5); ,/unhfs1q
} 7{Wny&[0
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) %&bY]w
{ 3Zh)]^
sSiteURL= sURL; lu/
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sFilePath = sPath; BJ(M2|VH
sFileName = sName; 08{@rOr
this.nSplitter = nSpiltter; Etm?'
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