/* lVOu)q@l7g
**SiteFileFetch.java nKa$1RMO
*/ 2*w0t:Yxe
package NetFox; Dre2J<QL
import java.io.*; z2_6??tS/c
import java.net.*; a2IgC25
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public class SiteFileFetch extends Thread { 5"XC$?I<}
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SiteInfoBean siteInfoBean = null; //文件信息Bean El\%E"Tk%
long[] nStartPos; //开始位置 yAL[[
long[] nEndPos; //结束位置 &>d:R_Q]
FileSplitterFetch[] fileSplitterFetch; //子线程对象 >NYW{(j
long nFileLength; //文件长度 F8-?dp f'
boolean bFirst = true; //是否第一次取文件 -Eu6U`"(
boolean bStop = false; //停止标志 ~5FW[_
File tmpFile; //文件下载的临时信息 #Cpd9|
DataOutputStream output; //输出到文件的输出流 @+3kb.P%7
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 1 zw*/dp
public SiteFileFetch(SiteInfoBean bean) throws IOException *(C(tPhC
{ wE+${B03
siteInfoBean = bean; .*m>\>Gsgw
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); J'$>Gk]
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ;AO#xv+#
if(tmpFile.exists ()) !?c|XdjZ
{ q9Y9w(
bFirst = false; ^nbnbU4'
read_nPos(); `]Q:-h
} V"c
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else =[b)1FUp
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nStartPos = new long[bean.getNSplitter()]; (x/k.&
nEndPos = new long[bean.getNSplitter()]; X 1
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} ,]bB9tid
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} C74a(Bk}H
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public void run() wgCa58H76
{ M#(+c_(r
//获得文件长度 *G*
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//分割文件 8Z(Mvq]f&
//实例FileSplitterFetch :q#Xq;Wp
//启动FileSplitterFetch线程 6I@h9uIsze
//等待子线程返回 n{6G"t:^l
try{ g+J-Zg6
if(bFirst) 0u\GO;
{ ?@E!u|]K
nFileLength = getFileSize(); E?_Z`*h
if(nFileLength == -1) gNt(,_]ZR
{ ZYC<Wb)I
System.err.println("File Length is not known!"); 1t)il^p4[;
} xlQBe-Wg
else if(nFileLength == -2) 293M\5:
{ #O+),,WS
System.err.println("File is not access!"); )c `7( nY
} 7(pF[LCF
else yu;P +G
{ xg3:} LQ
for(int i=0;i<nStartPos.length;i++) \B,(k<
{ Oil?JI Hq
nStartPos = (long)(i*(nFileLength/nStartPos.length)); euC&0Ee2
} Hv2De0W
for(int i=0;i<nEndPos.length-1;i++) uD^cxD
{ yU9DSY\m{
nEndPos = nStartPos[i+1]; )ubiB^g'm
} Q)IKOt;N]
nEndPos[nEndPos.length-1] = nFileLength; xL\0B,]
} thI
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} Evedc*z~P
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//启动子线程 )c)vTZy
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; s,]z[qB#$
for(int i=0;i<nStartPos.length;i++) zx)z/1
{ Y\No4w ^|d
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), , GP?amh
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), HhvdqvIEG
nStartPos,nEndPos,i); neLAEHV
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); >U[j]V]
fileSplitterFetch.start(); %^ !,t:d
} Dy:|g1>
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), FY#C.mL
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 5yP\I+Fm
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ]x(!&y:h
nEndPos = " + nFileLength); {0WHn.,2Y
// fileSplitterFetch[nPos.length-1].start(); $42{HFGq
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//等待子线程结束 T( U_
//int count = 0; `~By)?cT_>
//是否结束while循环 /w}u3|L$
boolean breakWhile = false; 5:KQg
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while(!bStop) @X#F3;
{ }f6HYU
write_nPos(); <nT
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Utility.sleep(500); R8a3
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breakWhile = true; .nx2";oi
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for(int i=0;i<nStartPos.length;i++) G$F<$
{ Wa{` VS
if(!fileSplitterFetch.bDownOver) [q8 P~l
{ ) QU
breakWhile = false; P&*2pX:
break; @emK1iwm
} Ezd_`_@R
} D$I5z.a
if(breakWhile) wNpTM8rfU#
break; Y,^@P
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//count++;
/} b03
//if(count>4) rrik,qyv6
// siteStop(); Nh_Mz;ITuu
} B#Vz#y
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System.err.println("文件下载结束!"); vunHNHltW0
} Lr~=^{
catch(Exception e){e.printStackTrace ();} (ROY?5
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} 4NheWM6
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//获得文件长度 Bg x'9p/
public long getFileSize() \Je0CD=e`
{ 1W^taJH]
int nFileLength = -1; P-y jN
try{ uKUiV%p!
URL url = new URL(siteInfoBean.getSSiteURL()); g| I6'K!<
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); O;:mCt _H
httpConnection.setRequestProperty("User-Agent","NetFox"); (MxQ+D\
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int responseCode=httpConnection.getResponseCode(); |
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if(responseCode>=400) }v}P
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{ R;&AijS8
processErrorCode(responseCode); ^
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return -2; //-2 represent access is error K*LlW@
} yerg=,$_i
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String sHeader; 1ySk;;3
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for(int i=1;;i++) cQy2"vtU
{ zPn+V7F
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); "O3tq=Q
//Utility.log(in.readLine()); vWzm@
sHeader=httpConnection.getHeaderFieldKey(i); ` Mjj@[
if(sHeader!=null) *\+\5pu0
{ 2_HNhW
if(sHeader.equals("Content-Length")) qkDI](4
{ +"
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); !Xf5e*1IS
break; `u3EU*~W
} y\4L{GlBM
} )~)J?l3{
else f-vCm 5f
break; Dp,L/1GQ8
} 89pEfl j2
} %g{X ?
catch(IOException e){e.printStackTrace ();} h7G"G"
catch(Exception e){e.printStackTrace ();} _|kxY'_[8
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Utility.log(nFileLength); >JHryS.j$4
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return nFileLength; -$,TMqM
} \)#kquH/l
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//保存下载信息(文件指针位置) Gw/Pk4R
private void write_nPos() I0D(F
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{ eI$oLl@
try{ _mqL8ho
output = new DataOutputStream(new FileOutputStream(tmpFile)); 2VmNZ{<
output.writeInt(nStartPos.length); LO9=xGj.
for(int i=0;i<nStartPos.length;i++) JU1~e@/'%
{ Z]>O+
// output.writeLong(nPos); |mxDjgq
output.writeLong(fileSplitterFetch.nStartPos); o[Q MT P
output.writeLong(fileSplitterFetch.nEndPos); XKj|f`
} ]#)()6)2v
output.close(); BTqS'NuT
} ! `
catch(IOException e){e.printStackTrace ();} ]
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catch(Exception e){e.printStackTrace ();} TaZmRL
} !"?#6-,Xn
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//读取保存的下载信息(文件指针位置) ^S4d:-.3
private void read_nPos() b[r8e
{ PCHu#5j_a
try{ w1Nm&}V
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); g0xuxK;9c
int nCount = input.readInt(); "h{q#~s
nStartPos = new long[nCount]; hO\<%0F
nEndPos = new long[nCount]; .F4>p=r
for(int i=0;i<nStartPos.length;i++) GFj{K
{ cM(:xv
nStartPos = input.readLong(); OcR$zlgs[v
nEndPos = input.readLong(); %<\vGqsM
} [\^n=
input.close(); h]IxXP?h[
} ^cOUQ33
catch(IOException e){e.printStackTrace ();} u@Ih GME
catch(Exception e){e.printStackTrace ();} \pa"%c)
} : %lTU
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private void processErrorCode(int nErrorCode) .0zY}`
{ }^ApJS(FQ
System.err.println("Error Code : " + nErrorCode); pNG:0
} 7Od
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//停止文件下载 X&tF;<m^
public void siteStop() Ep9nsX*
{ ;km`P|<U
bStop = true; zJq~!#pZ
for(int i=0;i<nStartPos.length;i++) QyEnpZ8?a
fileSplitterFetch.splitterStop(); &jS>UsGh
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} LdYB7T,
} v> LIvi|]
//负责部分文件的抓取 "3X2VFwoJ
**FileSplitterFetch.java VACQ+
*/ &|s0P
package NetFox; lUOF4U&r
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import java.io.*; E-T)*`e
import java.net.*; u4t7Ie*Q
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public class FileSplitterFetch extends Thread { Ot4 Z{mA
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String sURL; //File URL \o z#l'z
long nStartPos; //File Snippet Start Position Y@;CF
long nEndPos; //File Snippet End Position &C`Gg<
int nThreadID; //Thread's ID E(*0jAvO[z
boolean bDownOver = false; //Downing is over wg9t)1k{e
boolean bStop = false; //Stop identical *D'22TO[[!
FileAccessI fileAccessI = null; //File Access interface 9&$y}Y
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 0eT(J7[ <
{ 'j`=if
this.sURL = sURL; !O\82d1P
this.nStartPos = nStart; vDp8__^
this.nEndPos = nEnd; bg!/%[ {M
nThreadID = id; W,K;6TZhh
fileAccessI = new FileAccessI(sName,nStartPos);//定位 JgxtlYjl
} \Z?9{J
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public void run() W =D4r
{ 6|gCuT4
while(nStartPos < nEndPos && !bStop) TJ2=m9Z
{ {0[tNth'h
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try{ 5VfyU8)7X
URL url = new URL(sURL); S(k3 `;K
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); .yMEIUm
httpConnection.setRequestProperty("User-Agent","NetFox"); OC_+("N
String sProperty = "bytes="+nStartPos+"-"; zykT*V
httpConnection.setRequestProperty("RANGE",sProperty); piJu+tUy
Utility.log(sProperty); ~Q Oe##
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InputStream input = httpConnection.getInputStream(); 8+~
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//logResponseHead(httpConnection); wy<\Tg^J
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byte[] b = new byte[1024]; `68@+|#
int nRead; .u)X3..J
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) iJ ($YvF4
{ x!?u^
nStartPos += fileAccessI.write(b,0,nRead); f&=AA@jLv
//if(nThreadID == 1) XPavReGf
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); +vw\y
} uF X#`^r`
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Utility.log("Thread " + nThreadID + " is over!");
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bDownOver = true; y8d]9sX{
//nPos = fileAccessI.write (b,0,nRead); [meO[otb
} ;o
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catch(Exception e){e.printStackTrace ();} 7LfAaj
} ;@0;pY
} `Syl:rU~y@
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//打印回应的头信息 J-[,KME_^
public void logResponseHead(HttpURLConnection con) l?E{YQq]
{ H[NSqu.s
for(int i=1;;i++) o$wEEz*4
{ 7z%L*z8V
String header=con.getHeaderFieldKey(i); C>ICu*PW
if(header!=null) a]$1D!Anc
//responseHeaders.put(header,httpConnection.getHeaderField(header)); jrCfWa}z
Utility.log(header+" : "+con.getHeaderField(header)); Ja|5 @
else ;"xfOzQ
break; \Q {m9fE
} _jvxc'6
} A9[ F
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public void splitterStop() >Ifr [
{ ]>W6
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bStop = true; C+*d8_L
} B~?*?Z'
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} 5u,{6
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/* 1ufp qqk
**FileAccess.java J9..P&c\
*//文件访问(定位,写) UZWioxsKr+
package NetFox; I~[F|d>
import java.io.*; R]JT&p|w.1
;
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public class FileAccessI implements Serializable{ g6yB6vk
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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 n#cC+>*>+
RandomAccessFile oSavedFile; ):P?
long nPos; # ncRb
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public FileAccessI() throws IOException >;jZa
{ 3(``#7
this("",0); ?'IP4z;y
} M5i%jZk
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public FileAccessI(String sName,long nPos) throws IOException ajve~8/&
{ :)8VdWg
oSavedFile = new RandomAccessFile(sName,"rw"); _aq8@E~
this.nPos = nPos; Vo4,@scG
oSavedFile.seek(nPos); j SHk{T!J
} .L+6 $8m
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public synchronized int write(byte[] b,int nStart,int nLen) l\f*d6o
{ B=U 3
int n = -1; y3vdUauOn
try{ dR
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oSavedFile.write(b,nStart,nLen); bes<qy
n = nLen; 4M^=nae
} oxr#7Ei0d
catch(IOException e) yyR0]NzYUD
{ I.I`6(Cb
e.printStackTrace (); )i6mzzj5
} &`h{iK7
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return n; f<GhkDPm>?
} &g#@3e1>
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} _qU4Fadgm
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/* zlyS}x@p
**SiteInfoBean.java
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*/ p$O.>
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package NetFox; 3N8t`N
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public class SiteInfoBean { <<UB ^v m
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private String sSiteURL; //Site's URL 5sdn[Tt##
private String sFilePath; //Saved File's Path 4"GR]
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private String sFileName; //Saved File's Name W,D4.w$@'
private int nSplitter; //Count of Splited Downloading File Ig$(3p
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public SiteInfoBean() y+Ra4G#/}
{//nSplitter的缺省值为5 Yy5h"r
//default value of nSplitter is 5 }~2LW" 1'
this("","","",5); K)6rY(x
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} :X"?kK0 V
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) ih)zG
{ $Y;U[_l#
sSiteURL= sURL; v/@^Q1G/:
sFilePath = sPath; y>:N{|
sFileName = sName; j 7fL7:,T
this.nSplitter = nSpiltter; $yN{-T"
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} :1 ^LsLr5
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public String getSSiteURL() p5Z"|\
{ <5d~P/,
return sSiteURL; YD<:,|H
} Moy <@+
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public void setSSiteURL(String value) ,NOsFO-`<
{ ~Io7]
sSiteURL = value; j_/>A=OD
} Yf:IKY
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public String getSFilePath() @_-hk|Nl@
{ x`U^OLV
return sFilePath; d+<G1w&