/* hA1-){aw3q
**SiteFileFetch.java )"+2Z^1-
*/ ,|kDsR!
package NetFox; 6#@ f'~s
import java.io.*; ])}(k
import java.net.*; cC'x6\a
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public class SiteFileFetch extends Thread { N!2Rl
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SiteInfoBean siteInfoBean = null; //文件信息Bean m3<+yz$!r
long[] nStartPos; //开始位置 oXXC@[??}N
long[] nEndPos; //结束位置 2*iIjw3g
FileSplitterFetch[] fileSplitterFetch; //子线程对象 $*R/tJ.
long nFileLength; //文件长度 {0"YOS`3AX
boolean bFirst = true; //是否第一次取文件 *%/~mSx
boolean bStop = false; //停止标志 ({WyDu&=
File tmpFile; //文件下载的临时信息 A:l@_*C..
DataOutputStream output; //输出到文件的输出流 H<EQu|f&x
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) GL{57
public SiteFileFetch(SiteInfoBean bean) throws IOException /3 B
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{ re?s.djT
siteInfoBean = bean; ~{,X3-S_H
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 6/V3.UP-
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); y:m_tv0~0
if(tmpFile.exists ()) e]=lKxFh&l
{ !V2/A1?
bFirst = false; zOgTQs"ZH
read_nPos(); -#!x|ne
} jh2t9SI~
else #n0Y6Pr
{ RPd}Wf
nStartPos = new long[bean.getNSplitter()]; Z[__"^}
nEndPos = new long[bean.getNSplitter()]; 91>fqe
} U-/{0zB
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} 'R`tLN
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public void run() $Iv2j">3)
{ evkH05+;W
//获得文件长度 Tou/5?#%e
//分割文件
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//实例FileSplitterFetch b306&ZVEk
//启动FileSplitterFetch线程 B(xN Gs
//等待子线程返回 >{\7&}gz
try{ )XcOl7XLN
if(bFirst) W@|6nPm
{ +)o}c"P!
nFileLength = getFileSize();
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if(nFileLength == -1) A+hT3;lp
{ (jU6GJRP
System.err.println("File Length is not known!"); 0cK{
} E|'h]NY
else if(nFileLength == -2) M@0;B30L
{ @2'Mt}R>
System.err.println("File is not access!"); 2{|h8oz
} L_=3<nE
else 3bnS
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{ jReXyRmo({
for(int i=0;i<nStartPos.length;i++) Xp0F
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{ 34\(7JO
nStartPos = (long)(i*(nFileLength/nStartPos.length)); !uQPc
} a5a($D
for(int i=0;i<nEndPos.length-1;i++) Reatdh
{ S[WG$
nEndPos = nStartPos[i+1]; Sb~MQ_
} #>Zzf
nEndPos[nEndPos.length-1] = nFileLength; lz1wO5%h
} ?-^~f
} sc,Xw:YO
}.s~T#v
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//启动子线程 jH_JmYd
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ~NW32
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for(int i=0;i<nStartPos.length;i++) GnvL'ESa@M
{ !.d@L6
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 9k{PBAP
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 2RSt)3!},
nStartPos,nEndPos,i); ;G%R<Z
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); yn#X;ja-
fileSplitterFetch.start(); lok=
} \L"kV!>
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), )ZN|t?|
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); qvPtyc^fN
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", j_Yp>=+[
nEndPos = " + nFileLength); I_RsYw
// fileSplitterFetch[nPos.length-1].start(); fkac_X$7
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//等待子线程结束 =ZqT3_
//int count = 0; G;YrF)\
//是否结束while循环 r?/'!!4
boolean breakWhile = false; F i0GknQ+
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while(!bStop) RsYU59_Y
{ t<#h$}=:Vt
write_nPos(); b9!FC$^J
Utility.sleep(500); WYr/oRO
breakWhile = true; BqT y~{)+
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for(int i=0;i<nStartPos.length;i++) soQ1X@"0
{ >rf'-X4n
if(!fileSplitterFetch.bDownOver) |j,"Pl}il^
{ =uS9JU^E
breakWhile = false; ;n
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break; >Z5gSs0
} :\|SQKD
} 9E6_]8rl
if(breakWhile) `E>1>'
break; Ig
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//count++; .4E&/w+
//if(count>4) @<elq'2
// siteStop(); `7r@a
} maNl^i
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System.err.println("文件下载结束!"); <_-hRbS
} ~Yy>zUH^X
catch(Exception e){e.printStackTrace ();} X"fb; sGT
} 5;YMqUkw
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//获得文件长度 4GX-ma,
public long getFileSize() B\o Mn
{ C)`Fv=]R
int nFileLength = -1; 85LAYaw
try{ z62;cv
URL url = new URL(siteInfoBean.getSSiteURL()); j3{D^|0bP
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); yjF1}SQ
httpConnection.setRequestProperty("User-Agent","NetFox"); 7Mg=b%IYs
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int responseCode=httpConnection.getResponseCode(); %yv<y+yP~
if(responseCode>=400) ]d!
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{ qm"rY\:
processErrorCode(responseCode); Q|#W#LV,K
return -2; //-2 represent access is error q!|*oUW
} 1ng!G 7g
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String sHeader; Gz,i~XX
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for(int i=1;;i++) gaZu;t2u
{ -;^j:L{
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); )-a'{W/t
//Utility.log(in.readLine()); &E.^jR~*
sHeader=httpConnection.getHeaderFieldKey(i); n(;|q&3
if(sHeader!=null) tFp Ygff<
{ s~5[![1
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if(sHeader.equals("Content-Length")) x-^`~p
{ z=q3Zo
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); iO|se:LY<
break; iOW#>66d
} Ab{ K<:l
} W04@!_) <
else 2AT5
break; H|3:6x
} Uq^#r iq
} zh8nc%X{
catch(IOException e){e.printStackTrace ();} Vex{.Vh,"
catch(Exception e){e.printStackTrace ();} Cv6'`",Yzm
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Utility.log(nFileLength); )48QBz?
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return nFileLength; |}=acc/
} _Xk.p_uh
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//保存下载信息(文件指针位置) F8jd'OR
private void write_nPos() f4 P8Oz
{ I|gB@|_~
try{ &$`P,i 1)
output = new DataOutputStream(new FileOutputStream(tmpFile)); F \KjEl0
output.writeInt(nStartPos.length); bDL,S?@
for(int i=0;i<nStartPos.length;i++) |H;F7Y_
{ Qz5sxi
// output.writeLong(nPos); 6-$jkto
output.writeLong(fileSplitterFetch.nStartPos); pwL;A3$|
output.writeLong(fileSplitterFetch.nEndPos); <
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} 49GkPy#]L=
output.close(); .F
} "{@A5A
catch(IOException e){e.printStackTrace ();} 9K{%vK
catch(Exception e){e.printStackTrace ();} le/,R@]B9
} ,(qRc(Ho
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//读取保存的下载信息(文件指针位置) ;oW6 NJ
private void read_nPos()
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{ 0D\#Pq
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try{ [ 9 {*94M
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); I,>-t GK
int nCount = input.readInt(); e:fy#,HEj{
nStartPos = new long[nCount]; xS4w5i2
nEndPos = new long[nCount]; 8m2Tk\;:
for(int i=0;i<nStartPos.length;i++) *|%@6I(
{ =,spvy'"*C
nStartPos = input.readLong(); yu!h<nfzA
nEndPos = input.readLong(); Ugu[|,
} l{I6&^!KS
input.close(); ($au:'kU
} x$5) ^ud?
catch(IOException e){e.printStackTrace ();} UO0{):w>
catch(Exception e){e.printStackTrace ();} iU$] {c2;A
} {.?ZHy\Rk
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private void processErrorCode(int nErrorCode) .7e2YI,S
{ ~$Tkn_w#
System.err.println("Error Code : " + nErrorCode); <"{qk2LS1
} Uzz'.K(Mv|
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//停止文件下载 & ?h#Z!
public void siteStop() s.bc>E0
{ 27
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bStop = true; 1O/+8yw
for(int i=0;i<nStartPos.length;i++) _4"mAPt
fileSplitterFetch.splitterStop(); }Lc-7[/
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} 0h#lJS*
} UK595n;P
//负责部分文件的抓取 _"?.!
**FileSplitterFetch.java %<k2#6K
*/ Gw>^[dmt!
package NetFox; FQu8vwV6>
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import java.io.*; #pP[xE"Y
import java.net.*; R)_%i<nq\
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public class FileSplitterFetch extends Thread { HJLu'KY}
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String sURL; //File URL CJ1 7n
long nStartPos; //File Snippet Start Position fsJ9bQm/
long nEndPos; //File Snippet End Position U{7w#>V
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int nThreadID; //Thread's ID ~HTmO;HNf"
boolean bDownOver = false; //Downing is over xf<at ->
boolean bStop = false; //Stop identical mw_~*Nc'9
FileAccessI fileAccessI = null; //File Access interface 5's87Z;6
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Ov5"
{ w`4=_J=GO
this.sURL = sURL; 7E!IF>`
this.nStartPos = nStart; >6NRi /[
this.nEndPos = nEnd; rf
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nThreadID = id; o)Iff)m$
fileAccessI = new FileAccessI(sName,nStartPos);//定位 $;1#To
} 3,p]/Z_
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public void run() *,e:]!*
{ ]JCvyz
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while(nStartPos < nEndPos && !bStop) zz+$=(T:M
{ XG}C+;4Aw
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try{ *^g:P^4
URL url = new URL(sURL); C`$n[kCJ
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); H\h3TdL
httpConnection.setRequestProperty("User-Agent","NetFox"); 7op`s5i
String sProperty = "bytes="+nStartPos+"-"; / :
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httpConnection.setRequestProperty("RANGE",sProperty); wP6Fl L
Utility.log(sProperty); F20E_2;@@
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InputStream input = httpConnection.getInputStream(); LgKaPg$
//logResponseHead(httpConnection);
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byte[] b = new byte[1024]; JW{rA6?
int nRead; gbI^2=YT'
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) B|R@5mjm
{ s"0Y3x3
nStartPos += fileAccessI.write(b,0,nRead); qlb-
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//if(nThreadID == 1) [h^2Y&Au5
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); |%J {RA
} j"}*T
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Utility.log("Thread " + nThreadID + " is over!"); 'm4W}F
bDownOver = true; !
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//nPos = fileAccessI.write (b,0,nRead); u -;_y='m
} xfpa]Z
catch(Exception e){e.printStackTrace ();} U@HK+C"M|
} MXw hxk#E
} A;*d}Xe&J
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//打印回应的头信息 %5eY'
public void logResponseHead(HttpURLConnection con) +_; l|uhT;
{ ;LG#.~f
for(int i=1;;i++) P*
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{ e8pG"`wM8
String header=con.getHeaderFieldKey(i); |2RC# ]/-Y
if(header!=null) :[O
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//responseHeaders.put(header,httpConnection.getHeaderField(header)); ]~aF2LJ_q
Utility.log(header+" : "+con.getHeaderField(header)); _I)U%?V+
else \9cG36
break; V8rx#H~
} 5_- (<B
} W+PJZn
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public void splitterStop() 2nSSFx r
{ G&i!Hs
bStop = true; mS^tX i5hg
} Ov-icDMm
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} |G?htZF
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/* |y0(Q V
**FileAccess.java N'^&\@)xiU
*//文件访问(定位,写) K_RjX>q%N
package NetFox; X~lVVBO
import java.io.*; ^>jwh
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public class FileAccessI implements Serializable{ v2B0q4*BS?
~:Ll&29i
//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 +y&Tf#.V/A
RandomAccessFile oSavedFile; sg$rzT-S4
long nPos; ^Wt*
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public FileAccessI() throws IOException mj9 <%P
{ +VO-oFE |
this("",0); \l9qt5rS
} Dey<OE&
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public FileAccessI(String sName,long nPos) throws IOException 5@+,Xh,H|t
{ dwDcR,z?a
oSavedFile = new RandomAccessFile(sName,"rw"); L)@?e?9
this.nPos = nPos; M<kj_.
oSavedFile.seek(nPos); BT}!W`
} >pp5;h8!
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public synchronized int write(byte[] b,int nStart,int nLen) >zXsNeGQR
{ &6ZD136
int n = -1; e[&L9U6GW-
try{ f;W|\z'
oSavedFile.write(b,nStart,nLen); 7?GIS '
n = nLen; 8B\2Zfe
} ^(f"v
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catch(IOException e) TFkZp e;
{ /5Oa,NS7
e.printStackTrace (); va}Pj#=
} {q`jDDM
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return n; <vONmE a
} }bdmomV
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} o<COm9)i
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/* W4pL ,(S
**SiteInfoBean.java .Le?T&_
*/ /OLFcxEWh
package NetFox; ca7=V/i_a{
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public class SiteInfoBean { WvBc#s-
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private String sSiteURL; //Site's URL {`LU+
private String sFilePath; //Saved File's Path 6p?,(
private String sFileName; //Saved File's Name d1AioQ9
private int nSplitter; //Count of Splited Downloading File 8Kg n"M3
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public SiteInfoBean() eg(6^:z?f
{//nSplitter的缺省值为5 Y9uC&/_C
//default value of nSplitter is 5 p"n$!ilbm
this("","","",5); g!lWu[d
} H`1{_
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) v!<gY
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{ Sdt`i
sSiteURL= sURL; w80oXXs[#
sFilePath = sPath; piPR=B+
sFileName = sName; [x+FcXb
this.nSplitter = nSpiltter; gp>3I!bo[K
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} }& cu/o4
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public String getSSiteURL() ,]9P{k]O
{ lAb*fafQy
return sSiteURL; KN<S}3MN
} "i y
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public void setSSiteURL(String value) ]^h]t~
{ ,:%CB"J
sSiteURL = value; U{2BVqM
} /rWd=~[MO
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public String getSFilePath() GeyvId03H
{ C _'%NlJ'
return sFilePath; ~IYUuWF(
} nV"~-On
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public void setSFilePath(String value) 8EW_V$>R
{ a=J^
sFilePath = value; :flx6,7D
} !hJ+Lp_
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public String getSFileName() Vc 1\i
{ -.1y(k^4E
return sFileName; XW[j!`nlk
} 95ZyP!
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public void setSFileName(String value) eWCb73
{ *:Y%HAy*
sFileName = value; V3&RJ k=b
} f86XkECZ;`
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public int getNSplitter() ASKf'\,dV
{ 8m-U){r!U^
return nSplitter; caIL&G,
} /NLui@|R
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public void setNSplitter(int nCount) h?AS{`.1
{ =i$Fl{vH
nSplitter = nCount; |t^E~HLm,
} E%yNa]\P
} fa-IhB1!K
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/* I5`4Al
**Utility.java 8NxM4$nQX
*/ -z-C*%~
package NetFox; |LRedD7n
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public class Utility { 69PE9zz
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public Utility() ]%hn`ZJ
{ zpzK>DH(
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} PxTwPl
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//线程睡眠 q]\:P.x!>
public static void sleep(int nSecond) srPWE^&