/* }q@#M8 b
**SiteFileFetch.java |K Rt$t
*/ T2<%[AF0
package NetFox; :gU5C Um
import java.io.*; 0GrM:Lh y
import java.net.*; YPI)^ }
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public class SiteFileFetch extends Thread { Q l)hIf$Oo
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SiteInfoBean siteInfoBean = null; //文件信息Bean 4)8VmCW
long[] nStartPos; //开始位置 A)sYde(
long[] nEndPos; //结束位置 (^
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FileSplitterFetch[] fileSplitterFetch; //子线程对象 I*
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long nFileLength; //文件长度 1Y'4 g3T
boolean bFirst = true; //是否第一次取文件 nPXP9wmh4x
boolean bStop = false; //停止标志 tj@(0}pi4
File tmpFile; //文件下载的临时信息 1B2#uhT]r
DataOutputStream output; //输出到文件的输出流 v>} +->f
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) PmE)FthdP(
public SiteFileFetch(SiteInfoBean bean) throws IOException @!f4>iUy
{ NgGMsE\C}
siteInfoBean = bean; O[ird`/
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); - /\qGI
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ;z4F-SYQ
if(tmpFile.exists ()) F,p0OL.
{ lfcGi3
bFirst = false; W[O]Aal{
read_nPos(); Gm Wr
} ?x #K:a?
else ~< bpdI0
{ H\ejW@<;h
nStartPos = new long[bean.getNSplitter()]; Yn}Gj'
nEndPos = new long[bean.getNSplitter()]; Re8x!e'>
} !Rl|o^Vw>{
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} f?sm~PwC-
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public void run() 4Lt9Dx1
{ /=/Ki%hh
//获得文件长度 )FQ"l{P
//分割文件 `]eJF|"
//实例FileSplitterFetch LOx+?4|y
//启动FileSplitterFetch线程 QE(.w
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//等待子线程返回 mgjJNzclL
try{ eTx9fxw
if(bFirst) ux&"TkEp
{ [v"Z2F<.=
nFileLength = getFileSize(); ~U]g;u
if(nFileLength == -1) yv[j
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{ }UW7py!TN
System.err.println("File Length is not known!"); luf5-XT
} g^]Iw~T6$
else if(nFileLength == -2) /IUu-/ D
{ )Fv.eIBY
System.err.println("File is not access!");
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} fkzSX8a9}
else ccuGM W G*
{ p,fV .5q
for(int i=0;i<nStartPos.length;i++) K?^;|m-
{ `-L?x2)U
nStartPos = (long)(i*(nFileLength/nStartPos.length)); dM-cQo:
} 1(?4*v@B
for(int i=0;i<nEndPos.length-1;i++) ^&eF916H
{ ,@ 8+%KqG
nEndPos = nStartPos[i+1]; SN{+ P k
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nEndPos[nEndPos.length-1] = nFileLength; C 5.3[
} lhN@,q
} 6L<:>55
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//启动子线程 =:WZV8@%
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; !,Uo{@E)Y
for(int i=0;i<nStartPos.length;i++) M5`v^>
{ +FTc/r
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), "Lbsq\W>
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), AFz:%m
nStartPos,nEndPos,i); s:U:Dv
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 03 @aG
fileSplitterFetch.start(); 5CkG^9
} K|P0nJT
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), !/is+
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); y*i&p4Y*
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 2zBk#c+
nEndPos = " + nFileLength); J6Z[c*W
// fileSplitterFetch[nPos.length-1].start(); \]tBwa
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//等待子线程结束 }e[ E
//int count = 0; x%B_v^^^
//是否结束while循环 ?Z#N9Z~\
boolean breakWhile = false; T`bYidA
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while(!bStop) /s\ mV
{ }T?X6LA$I8
write_nPos(); }Ce9R2
Utility.sleep(500); gmL~n7m:K
breakWhile = true; hw
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for(int i=0;i<nStartPos.length;i++) N"S`9B1eD(
{ pi"H?EHk
if(!fileSplitterFetch.bDownOver) INg0[Lpc
{ sU_K^=6*
breakWhile = false; 5PeS/%uT@
break; !m@cTB7i
} fzSkl`K}
} smn"]K
if(breakWhile) MpCPY"WLL
break; iiPVqU%
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//count++; L<F8+a7i
//if(count>4) E'AR.!
// siteStop(); s6`E.Eevm
} V"/.An|
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System.err.println("文件下载结束!"); 2.q Zs8&
} hY"eGaoF"
catch(Exception e){e.printStackTrace ();} LE\*33k_
} (Z),gxt
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//获得文件长度 h,{m{Xh
public long getFileSize() RHF"$6EAFG
{ b;i*}4h!
int nFileLength = -1; h3MdQlJ&
try{ :@L7RZ`_
URL url = new URL(siteInfoBean.getSSiteURL()); }LUvh
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); F&Md+2
httpConnection.setRequestProperty("User-Agent","NetFox"); xIM,0xM2
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int responseCode=httpConnection.getResponseCode(); /vQ)$;xf#
if(responseCode>=400) V}E['fzBFV
{ !nmZ"n|}p
processErrorCode(responseCode); X|of87
return -2; //-2 represent access is error <y6`8J7:
} PQHztS"
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String sHeader; *lfjsrPu
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for(int i=1;;i++) JX59n%$@
{ K9<8FSn
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); r:QLU]
//Utility.log(in.readLine()); mb\T)rj
sHeader=httpConnection.getHeaderFieldKey(i); Rk$7jZdTf
if(sHeader!=null)
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{ $fb%?n{
if(sHeader.equals("Content-Length")) lu#a.41
{ }z]d]
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ?^&ih:"
break; A c_P^
} IFLphm5
} {j wv+6]U
else </I%VHP,[f
break; > X~\(|EM
} xQ9t1b|{e
} q!z?Tn#!jd
catch(IOException e){e.printStackTrace ();} *DJsY/9d}'
catch(Exception e){e.printStackTrace ();} WIWo4[(
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Utility.log(nFileLength); 5_^d3LOT0x
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return nFileLength; B:zx 9
} rz|T2K
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//保存下载信息(文件指针位置) Y.m1d ?H 1
private void write_nPos() `_J&*Kk5
{ Q& [!+s:2J
try{ H I9/
output = new DataOutputStream(new FileOutputStream(tmpFile)); 2CC"Z
output.writeInt(nStartPos.length); c)EYXo
for(int i=0;i<nStartPos.length;i++) E~y8X9HZ)
{ |!o C7!+0^
// output.writeLong(nPos); PMQTcQ^
output.writeLong(fileSplitterFetch.nStartPos); g`y9UYeh
output.writeLong(fileSplitterFetch.nEndPos); IADSWzQ@
} B>u`%Ry&
output.close(); %|jS`kj
} `^#Rwn#
catch(IOException e){e.printStackTrace ();} =Uk#7U"P
catch(Exception e){e.printStackTrace ();} ra~=i|s
} >MYxj}I4{z
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//读取保存的下载信息(文件指针位置) p\zqZ=s
private void read_nPos() 9/"&6,
{ +Xg:*b9So
try{ c!@|yE,
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ".jO2GO^
int nCount = input.readInt(); `0upm%A
nStartPos = new long[nCount]; \3vQXt\dM$
nEndPos = new long[nCount]; O_ #++G
for(int i=0;i<nStartPos.length;i++) v&:[?<6-
{ ?>7\L'n=5I
nStartPos = input.readLong(); 0A}XhX
nEndPos = input.readLong(); aT^
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} |
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input.close(); d.}65{F,x
} w5Fk#zJv
catch(IOException e){e.printStackTrace ();} 5c5!\g~'
catch(Exception e){e.printStackTrace ();} QMMpB{FZ`o
} qkfof{z
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private void processErrorCode(int nErrorCode) cc${[yj)
{ \d:Q%S
System.err.println("Error Code : " + nErrorCode); 'v'[_(pq
} 6$"IeBRO
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//停止文件下载 xWLZlUHEu
public void siteStop() ij:xr% FJ
{ 'e:4
bStop = true; ]MCH]/
for(int i=0;i<nStartPos.length;i++) U<Oc&S{]*
fileSplitterFetch.splitterStop(); Vg62HZ |
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} p;4FZ$
} j*>]HNo&
//负责部分文件的抓取 "OwM'
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**FileSplitterFetch.java :U\*4l
*/ <xBL/e
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package NetFox; +;+G+Tn
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import java.io.*; /Ey%aA4v
import java.net.*; =U84*HAv
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public class FileSplitterFetch extends Thread { JQb{?C
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String sURL; //File URL KyIUz9$
long nStartPos; //File Snippet Start Position 4UbqYl3|a
long nEndPos; //File Snippet End Position rFcz0
int nThreadID; //Thread's ID ~xzr8 P
boolean bDownOver = false; //Downing is over b!t[PShw^
boolean bStop = false; //Stop identical #2|biTJ
FileAccessI fileAccessI = null; //File Access interface 3]S_w[Q4
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException tF[)Y#
{ m
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this.sURL = sURL; 5XT^K)'
this.nStartPos = nStart; z81dm
this.nEndPos = nEnd; ~F@p}u8TV
nThreadID = id; $,Q]GIC
fileAccessI = new FileAccessI(sName,nStartPos);//定位 )fo0YpE^|
} JCxQENsVqB
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public void run() ;/NC[:'$D
{ 7cV
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while(nStartPos < nEndPos && !bStop) /nv*OKS|
{ )Q9Qo)D T
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try{ C D6N8n]
URL url = new URL(sURL); z,ryY'ua/I
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); &qY]W=9uK
httpConnection.setRequestProperty("User-Agent","NetFox"); F<h+d917
String sProperty = "bytes="+nStartPos+"-"; {$t*XTY6R
httpConnection.setRequestProperty("RANGE",sProperty); 1q=Q/L4P
Utility.log(sProperty); _{): w~zi
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InputStream input = httpConnection.getInputStream(); 7oZ Pb
//logResponseHead(httpConnection); z\FBN=54z
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byte[] b = new byte[1024]; %4`
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int nRead; AP z"k?D0
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) tvno3"
{ v?8i;[
nStartPos += fileAccessI.write(b,0,nRead); PcbhylKd
//if(nThreadID == 1) /\Cf*cJ
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); jD<xpD
} 6
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Utility.log("Thread " + nThreadID + " is over!"); nN.Gn+Cl
bDownOver = true; l(x0d
//nPos = fileAccessI.write (b,0,nRead); Bi9Q8#lh
} g/l:q&Q<
catch(Exception e){e.printStackTrace ();} XXm7rn
} ";Cf@}i>
} Fa`%MR1
| )
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//打印回应的头信息 ,_$J-F?
public void logResponseHead(HttpURLConnection con) `uLr^G=;
{ WnGi;AGH=1
for(int i=1;;i++) ~u!V_su]GY
{ #oiU|>3Y
String header=con.getHeaderFieldKey(i); |d~'X%b%
if(header!=null) M^OYQf
//responseHeaders.put(header,httpConnection.getHeaderField(header)); ^6{op3R_
Utility.log(header+" : "+con.getHeaderField(header)); }; 7I
else '>"blfix8
break; zqt%x?l
} L1+s0g>
} DO{otn9<
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public void splitterStop() |_g7k2oLY
{ R<I#.
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bStop = true; E;`^`T40
} OpazWcMoo
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} /?
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/* 'Qg!ww7O
**FileAccess.java }^Sk.:;n3
*//文件访问(定位,写) MBjAe!,-
package NetFox; xR$T/] /
import java.io.*; czT2f
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public class FileAccessI implements Serializable{ Vp1ct06^
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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 C6F7,v62
RandomAccessFile oSavedFile; :J@3:+sr
long nPos; `#W+pO
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public FileAccessI() throws IOException cR!M{U.q
{ Hn(Eut7%
this("",0); #Vmf
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} V'RbTFb9Z
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public FileAccessI(String sName,long nPos) throws IOException pl[@U<8aw
{ F
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oSavedFile = new RandomAccessFile(sName,"rw"); }%PK %/ zI
this.nPos = nPos; o_b3G
oSavedFile.seek(nPos); |ssl0/nk
} >r\GB#\5
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public synchronized int write(byte[] b,int nStart,int nLen) .Mb0++% W
{ 7BINqVS&
int n = -1; F7j/Zuj
try{ tw.GBR
oSavedFile.write(b,nStart,nLen); *aS+XnT/
n = nLen; jTg~]PQ^
} 5_](N$$
catch(IOException e) ~Gh7i>n*
{ 1anh@T.
e.printStackTrace (); 479X5Cl
} M?My+o T
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return n; ~@6l7H6{
} }[lP^Qs
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} Fx.Ly]L
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/* <FU?^*~
**SiteInfoBean.java <)!,$]S
*/ <"K*O9nst
package NetFox; z7sDaZL?_
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public class SiteInfoBean { p[xGL }
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private String sSiteURL; //Site's URL rOE:
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private String sFilePath; //Saved File's Path *k8?$(
private String sFileName; //Saved File's Name 6@8t>"}
private int nSplitter; //Count of Splited Downloading File EZjtZMnj
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public SiteInfoBean() T^`; wD
{//nSplitter的缺省值为5 li\=mH,Wr
//default value of nSplitter is 5 rq!*unJ
this("","","",5); (&Lt&i _
} 1,;zX^
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) jZkc
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{ NNbdP;=:u
sSiteURL= sURL; %aw.o*@:
sFilePath = sPath; gELG/6l
sFileName = sName; `?N0?;
this.nSplitter = nSpiltter; m }HaJ
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} z#o''
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public String getSSiteURL() vaP`'
{ MA:5'n
return sSiteURL; /; Bmh=
} 9-{=m+|b
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public void setSSiteURL(String value) (oX!D(OI
{ =(7nl#o
sSiteURL = value; egG<"e*W}N
} +ppA..1
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