/* cZ>h [XX[
**SiteFileFetch.java hes$LH
*/ <*I%U]
package NetFox; HjG!pO{
import java.io.*; l!UF`C0g
import java.net.*; \Nd8,hE
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public class SiteFileFetch extends Thread { 24;F~y8H
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SiteInfoBean siteInfoBean = null; //文件信息Bean Z:51Q
long[] nStartPos; //开始位置 %-u Ra\
long[] nEndPos; //结束位置 9cV;W \ Tw
FileSplitterFetch[] fileSplitterFetch; //子线程对象 )q#1C]7m*
long nFileLength; //文件长度 cO}`PD$i
boolean bFirst = true; //是否第一次取文件 7Uy49cs,
boolean bStop = false; //停止标志 gr]:u4}
File tmpFile; //文件下载的临时信息 HHd;<% q
DataOutputStream output; //输出到文件的输出流 Hqsj5j2i
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) rmVF88/;
public SiteFileFetch(SiteInfoBean bean) throws IOException ks{y=@<,
{ w, uyN
siteInfoBean = bean; .7lDJ2
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); rDr3)*H?0
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); H\W/;Nn
if(tmpFile.exists ()) 9UF^h{X
{ yMz%s=rh
bFirst = false; ! n@*6
read_nPos(); 0|mF
/
} 3eOwy~
else UvwO/A\Gv
{ hRKAs
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nStartPos = new long[bean.getNSplitter()]; 9/[1a_
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nEndPos = new long[bean.getNSplitter()]; A^\A^$|O6
} OB-gH3:
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} c& &^Do
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public void run() PWU8 9YXp
{ Rn] `_[)*~
//获得文件长度 @D:$~4ks
//分割文件 o u%Xnk~
//实例FileSplitterFetch G.ag$KF
//启动FileSplitterFetch线程 V(/ @$&
//等待子线程返回 8Jnl!4
try{ x}acxu 2H7
if(bFirst) }ZPO^4H;-
{ Z %?:
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nFileLength = getFileSize(); >b6!*Lrhs
if(nFileLength == -1) m*'^*#
{ "YW&,X5R
System.err.println("File Length is not known!"); `TugtzRU
} +@n8DM{b
else if(nFileLength == -2) P;B<R"
{ J`uO~W"
System.err.println("File is not access!"); _tl
} 6I5,PB
else H83Gx;
{ f=$w,^)M
for(int i=0;i<nStartPos.length;i++) v$H=~m
{ l'Oz-p.@
nStartPos = (long)(i*(nFileLength/nStartPos.length)); 2.xA' \M
} nu'r`
for(int i=0;i<nEndPos.length-1;i++) 1=R6||8ws
{ e|6kgj3/
nEndPos = nStartPos[i+1]; ape\zZCV
} =IbDGw(
nEndPos[nEndPos.length-1] = nFileLength; `>.^/SGu>?
} b#h}g>l
} ~Bw)rf,
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//启动子线程 HNFG:t9
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 6bv~E.
for(int i=0;i<nStartPos.length;i++) R&lJ& SgC
{ UG@9X/l}
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), olHT* mr
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ]6:|-x:m
nStartPos,nEndPos,i); lfle7;
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Mp%.o}j
fileSplitterFetch.start(); p }p@])}8
} V'-}B6 3S>
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ?W6qwm,?L
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); FabDK :
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", {Kbb4%P+h
nEndPos = " + nFileLength); @y"/hh_?
// fileSplitterFetch[nPos.length-1].start(); 5X4 #T&.
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//等待子线程结束 Z$a5vu*pg
//int count = 0; Z%rMX}
//是否结束while循环 bSG}I|
boolean breakWhile = false; %3Ba9Nmid
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while(!bStop) fu=GgD*
{ <%_7%
write_nPos(); O)2==_f\
Utility.sleep(500); ?2RDd|#
breakWhile = true; G}|!Jdr
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for(int i=0;i<nStartPos.length;i++) =sp5.-r
{ =hw&2c
if(!fileSplitterFetch.bDownOver) _m?TEqB
{ `f|Gw5R
breakWhile = false; *VP-fyJp
break; [Dzd39aKr
} t\\oGH
} [WfigqY`b*
if(breakWhile) PU& v{gn
break; B4l*]K%
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//count++; u0o}rA
//if(count>4) %z9lCTmy
// siteStop(); $u ae8h
} `rWT^E@p5m
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System.err.println("文件下载结束!"); tz6N,4J?
} tPQjjoh
catch(Exception e){e.printStackTrace ();} I`% ]1{
} B'AU~#d
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//获得文件长度 Y&![2o.Q
public long getFileSize() =ws iC'
{ ZyJ-}[z
int nFileLength = -1; _l ,_NV&T
try{ *wfb~&:}
URL url = new URL(siteInfoBean.getSSiteURL()); Y<ZaW{%
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); XCo3pB
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httpConnection.setRequestProperty("User-Agent","NetFox"); VZhHO
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int responseCode=httpConnection.getResponseCode(); *XCgl*% *
if(responseCode>=400) WDF;`o*3
{ 8kRqF?rbj
processErrorCode(responseCode); {:%A
return -2; //-2 represent access is error #Wf9`
} !gyEw1Re7
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String sHeader; ?=FRnpU?
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for(int i=1;;i++) U+4W9zhwo
{ bTd94
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ,B'n0AO/'
//Utility.log(in.readLine()); pm4'2B|)g
sHeader=httpConnection.getHeaderFieldKey(i); -(;<Q_'s{"
if(sHeader!=null) ; *ZiH%q,
{ n N_Ylw
if(sHeader.equals("Content-Length")) -50Nd=1
{ fZ6-ap,u
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); QnZ7e#@UP
break; eoGGWW@[
} yGs:3KI
} jE#&u DfI
else YCBcyE}p
break; GV"X) tGo
} \'>8 (i~
} Rf4}4ixkj
catch(IOException e){e.printStackTrace ();} #;lB5) oe
catch(Exception e){e.printStackTrace ();} !RPPwvNk4
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Utility.log(nFileLength); -qDM(zR
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return nFileLength; tsWzM9Yf
} 0]u=GD%
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//保存下载信息(文件指针位置) aj|gt
private void write_nPos() *?`<Ea
{ \Um &
try{ O={
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output = new DataOutputStream(new FileOutputStream(tmpFile)); GEGg
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output.writeInt(nStartPos.length); FWb`F&
for(int i=0;i<nStartPos.length;i++) P.>5`^
{ },& =r= B
// output.writeLong(nPos); B s {n
output.writeLong(fileSplitterFetch.nStartPos); Be4n\c.
output.writeLong(fileSplitterFetch.nEndPos); 713)D4y}
} ixjhZk i<
output.close(); 8jdEx&K
} +wpQ$)\
catch(IOException e){e.printStackTrace ();} 8j^3_lD
catch(Exception e){e.printStackTrace ();} :dML+R#Ymh
} LEgx"H=c
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//读取保存的下载信息(文件指针位置) Gc0/*8u/
private void read_nPos() nB.u5
{ B4/\RC2
try{ Z]\IQDC
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ?>}&,:U}
int nCount = input.readInt(); MVYf-'\^
nStartPos = new long[nCount]; Pf?zszvs
nEndPos = new long[nCount]; a'prlXr\4
for(int i=0;i<nStartPos.length;i++) (q+EP(Q
{ -+H?0XN
nStartPos = input.readLong(); g-O}e4
nEndPos = input.readLong(); |\#6?y[o
} +}Q@{@5w
input.close(); ]ff5MY 36
} YYi:d=0<SO
catch(IOException e){e.printStackTrace ();} mcm8|@Y{
catch(Exception e){e.printStackTrace ();} us2RW<Oxv
} 4/+P7.}ea-
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private void processErrorCode(int nErrorCode) .0ExHcr
{ E==vk~cz
System.err.println("Error Code : " + nErrorCode); %.mHV7c)%
} ,2/y(JX}*!
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//停止文件下载 #$*l#j"#A
public void siteStop() ]R7zvcu&
{ t9Y?0O}/
bStop = true; >SSRwYIN
for(int i=0;i<nStartPos.length;i++) n1;y"`gHk
fileSplitterFetch.splitterStop(); s<`54o ,
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} +1(L5Do}
} uHu (
//负责部分文件的抓取 ADW>
**FileSplitterFetch.java =3R5m>6!/
*/ 5IfyD ]<
package NetFox; tI;pdR]
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import java.io.*; r[votdFo
import java.net.*; ~L3]Wa.
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public class FileSplitterFetch extends Thread { -<RG'I~
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String sURL; //File URL *j/[5J0'M
long nStartPos; //File Snippet Start Position ~K-_]*[x
long nEndPos; //File Snippet End Position 4Px
int nThreadID; //Thread's ID Q?7:XbN
boolean bDownOver = false; //Downing is over B(l8&
boolean bStop = false; //Stop identical GT(nW|v
FileAccessI fileAccessI = null; //File Access interface jn/
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 7]&ouT
{ 1}>u Y
this.sURL = sURL; M>kk"tyM
this.nStartPos = nStart; 9p '#a:
this.nEndPos = nEnd; /:o (Ghc?
nThreadID = id; !5escR!\D
fileAccessI = new FileAccessI(sName,nStartPos);//定位 vi-mn)L6#
} %I>-_el
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public void run() ),#hBB`ZA
{ @2eV^eO9
while(nStartPos < nEndPos && !bStop) tMQz'3,X
{ Qk_`IlSd
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try{ e|&}{JP{[
URL url = new URL(sURL); #Emz9qTsce
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); SGUu\yS&s
httpConnection.setRequestProperty("User-Agent","NetFox"); LnY`f -H
String sProperty = "bytes="+nStartPos+"-"; 5J 0Sc
httpConnection.setRequestProperty("RANGE",sProperty); b( qO fek
Utility.log(sProperty); ]%8f-_fSy
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InputStream input = httpConnection.getInputStream(); bo%v(
//logResponseHead(httpConnection); Bx&F* a;5
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byte[] b = new byte[1024]; M(+;AS?;
int nRead; g\O&gNq<)-
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) ;s(uaC3
{ v@KP~kp
nStartPos += fileAccessI.write(b,0,nRead); ))z1T 8
//if(nThreadID == 1) n;+e( ob;;
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); XnCrxj
} Js("H
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Utility.log("Thread " + nThreadID + " is over!"); R:}u(N
bDownOver = true; X8Ld\vZYn
//nPos = fileAccessI.write (b,0,nRead); v!b
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} :(o6^%x
catch(Exception e){e.printStackTrace ();} oy?>e1Sy*
} )rP)-op|A
} FJj #
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//打印回应的头信息 [q5N 4&q\
public void logResponseHead(HttpURLConnection con) c'8a)j$$+
{ u|'}a3
for(int i=1;;i++) *w[\(d'T
{ J|D$
String header=con.getHeaderFieldKey(i); ZKT~\l
if(header!=null) yavoGk
//responseHeaders.put(header,httpConnection.getHeaderField(header)); 5?()o}VjAO
Utility.log(header+" : "+con.getHeaderField(header)); 3{;W!/&>
else Es~|:$(N]|
break; `T \"B%
} 1; "t8.*%e
} +#|):aF
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public void splitterStop() <P"4Mk7`s
{ ;& PK6G
bStop = true; $^1L|KgXp
} KOQ9K
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} },=0]tvZG#
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/* uv,_?x\'
**FileAccess.java mm5y'=#
*//文件访问(定位,写) 3nJd0E
package NetFox; U=G^wL
import java.io.*; H"g$qSx
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public class FileAccessI implements Serializable{ j+>#.22+
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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 W"@FRWcd
RandomAccessFile oSavedFile; MGmUgc
long nPos; E9yBa=#*c
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public FileAccessI() throws IOException }uTe(Rf
{ $YM6}D@
this("",0); +C(v4@=nd
} vGT#BS%
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public FileAccessI(String sName,long nPos) throws IOException {Va"o~io
{ $YyN-C
oSavedFile = new RandomAccessFile(sName,"rw"); F9|\(St &
this.nPos = nPos; +[DL]e]@U
oSavedFile.seek(nPos); bS9<LQ*
} 0K&\5xXM
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public synchronized int write(byte[] b,int nStart,int nLen) 5$T>noD
{ sPee"9%,
int n = -1; }5)sS}C
try{ onuhNn_=>
oSavedFile.write(b,nStart,nLen); e[lRY>Pe5
n = nLen; z>f>B6
} >9S@:?^&q>
catch(IOException e) dUTF0U
{ 06&:X^
e.printStackTrace (); cN{-&\
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} Dw@0P
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return n; 'e3[m
} _TRO2p0
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} gGiLw5o,
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/* -F+dRzxH
**SiteInfoBean.java "SuBtoK
*/ -n-rKN.T
package NetFox; 8qEK6-
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public class SiteInfoBean { GYD`
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private String sSiteURL; //Site's URL B@,L83
private String sFilePath; //Saved File's Path @+v;B:
private String sFileName; //Saved File's Name 8%UI<I,
private int nSplitter; //Count of Splited Downloading File SOyE$GoOsx
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public SiteInfoBean() GHMoT
{//nSplitter的缺省值为5 FuZ7xM,
//default value of nSplitter is 5 7kBULeBn|
this("","","",5); [8k7-}[
} JZ[~3swR
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) C} #:<Jx
{ DR`d^aBWQ
sSiteURL= sURL; 2EubMG
sFilePath = sPath; e,_b
sFileName = sName; a*}ZT,V
this.nSplitter = nSpiltter; y[*Bw)F\N
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} $18|@\Znj
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public String getSSiteURL() Bv^{|w
{ &)Fp
return sSiteURL; !b"#`O%`
} Hnwir!=7
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; 4E0%@R
public void setSSiteURL(String value) *`:zSnu
{ jUq^$+N
sSiteURL = value; 5$Yt@8;
} A f@IsCOJ
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public String getSFilePath() &L,zh{Mp
{ %,rUN+vW
return sFilePath; )1a3W7
} Oo<^~d2=
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public void setSFilePath(String value) !<