/* Em
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**SiteFileFetch.java h#
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*/ g63(E,;;J
package NetFox; /cQueUME`
import java.io.*; vDhh>x(
import java.net.*; B:S>wFE(.
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public class SiteFileFetch extends Thread { }9# r0Vja
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SiteInfoBean siteInfoBean = null; //文件信息Bean
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long[] nStartPos; //开始位置 S8wLmd>
long[] nEndPos; //结束位置 N&+x+;Kx
FileSplitterFetch[] fileSplitterFetch; //子线程对象 $)ijN^hV
long nFileLength; //文件长度 :tB1D@Cb6
boolean bFirst = true; //是否第一次取文件 c&?m>2^6
boolean bStop = false; //停止标志 /}fHt^2H
File tmpFile; //文件下载的临时信息 gpvYb7Of0
DataOutputStream output; //输出到文件的输出流 kY|utoAP
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) GxI!{oi2
public SiteFileFetch(SiteInfoBean bean) throws IOException FF(#]vz '
{ `O!X((
siteInfoBean = bean; /hH
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); lH x^D;m6
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Kp~VS<3
if(tmpFile.exists ()) SpLzm A
{ rv^@, 8vq
bFirst = false; n&;85IF1
read_nPos(); TA`1U;c{n
} =_ ./~
else bz2ztH9 n
{ i$:*Pb3mV
nStartPos = new long[bean.getNSplitter()]; ;!mzyb*
nEndPos = new long[bean.getNSplitter()]; Vl/+;6_
} d *|Y
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} 8:c-k|CX
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public void run() r6MMCJ|G
{ ;4^Rx
//获得文件长度 fF$<7O)+]
//分割文件 L_uVL#To
//实例FileSplitterFetch RXpw!
//启动FileSplitterFetch线程 rb2S7k0{
//等待子线程返回 g1/[eoZzk
try{ tqvN0vY5
if(bFirst) D9CaFu
{ {W=%U|f
nFileLength = getFileSize(); t7dt*D_YqK
if(nFileLength == -1) 4n!aW?%
{ .9 on@S
System.err.println("File Length is not known!"); z0p*Z&
} X<`
else if(nFileLength == -2) 6Z6'}BDP
{ x=hiQ>BIO0
System.err.println("File is not access!"); pMx*F@&nU
} I {S;L
else b9KP( _
{ HZzD VCU
for(int i=0;i<nStartPos.length;i++) G_3O]BMKd)
{ iZ3IdiZ
nStartPos = (long)(i*(nFileLength/nStartPos.length)); /7nb,!~~l
} G~^r)fm_
for(int i=0;i<nEndPos.length-1;i++) fo*2:?K&
{ H1pO!>M
nEndPos = nStartPos[i+1]; /yDz/>ID\
} c z#rb*b
nEndPos[nEndPos.length-1] = nFileLength; 6y%qVx#!
} c)TPM/>(p
} *v
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//启动子线程 B4c]}r+
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; -LoZs
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for(int i=0;i<nStartPos.length;i++) 8`q:Gz=M\
{ rxgbV.tx
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), =r?hgGWe
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), |C;=-|
nStartPos,nEndPos,i); AW%#O\N
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ?>D+ge
fileSplitterFetch.start(); (Du@ S
} Zw
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// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), IXMop7~
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ~rE|%o
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", V%7WUq
nEndPos = " + nFileLength); ~NrG`
D}
// fileSplitterFetch[nPos.length-1].start(); U2tV4_ e
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//等待子线程结束 }>pknc?
//int count = 0; Sxt"B
//是否结束while循环 7{e
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boolean breakWhile = false; fIx+ILs
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while(!bStop) ~RW+GTe
{ |B?m,U$A!
write_nPos(); X:f UI4
Utility.sleep(500); h0*!;Z7
breakWhile = true; aD<A.Lhy
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for(int i=0;i<nStartPos.length;i++) %~O,zs.2p
{ er("wtM
if(!fileSplitterFetch.bDownOver) .KB^3pOpx
{ &n}]w+w
breakWhile = false; X[-xowE-
break; YFLZ %(
} s[RAHU
} dc+>m,3$
if(breakWhile) |IeTqEu9
break; 7Kr*P<-G
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//count++; OZb-:!m*
//if(count>4) FZ{h?#2?
// siteStop(); [SjqOTon{
} %+aCJu[k(z
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System.err.println("文件下载结束!"); MD}w Y><C
} f&NgS+<K$
catch(Exception e){e.printStackTrace ();} =J]&c?I
} A9KET$i@v
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//获得文件长度 %8RrRW
public long getFileSize() JU 4<|5H
{ NlA,'`,
int nFileLength = -1; oM
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try{ lF<]8m%F
URL url = new URL(siteInfoBean.getSSiteURL()); N~nziY*C,*
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); +RHS!0
httpConnection.setRequestProperty("User-Agent","NetFox"); ^rB8? kt
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int responseCode=httpConnection.getResponseCode(); z 4e7PW|
if(responseCode>=400) =Pyj%4Rs
{ $f$SNx)),
processErrorCode(responseCode); P7[h-3+^
return -2; //-2 represent access is error frm>4)9+
} lne|5{h
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String sHeader; o@_q]/Mh
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for(int i=1;;i++) 0G(/Wb"/
{ U"~>jZKk
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); D5gFXEeh
//Utility.log(in.readLine()); s-NX o
sHeader=httpConnection.getHeaderFieldKey(i); eFB5=)ld
if(sHeader!=null) CYf$nYR
{ H-!,yte
if(sHeader.equals("Content-Length")) 9sM!`Lz{
{ 6lZ3tdyNo
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); &Gc9VF]o
break; (fhb0i-
} 4V"E8rUL(
} zF@/K`
else j}#w)M
break; [DYQ"A=)d
} ]E{NNHK%2N
} _kC-dEGf!y
catch(IOException e){e.printStackTrace ();} SjK
catch(Exception e){e.printStackTrace ();} !K#qe Y}
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Utility.log(nFileLength); :ffY6L+
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return nFileLength; Yz9owe8}[
} !@5 9)
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//保存下载信息(文件指针位置) ~kV/!=
private void write_nPos() ~EW(Gs!=C
{ YByLoM*
try{ +l42Awl>K
output = new DataOutputStream(new FileOutputStream(tmpFile)); .S EdY:
output.writeInt(nStartPos.length);
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for(int i=0;i<nStartPos.length;i++) q#~ (/
{ &L3M]
// output.writeLong(nPos); ]|#+zx|/D
output.writeLong(fileSplitterFetch.nStartPos); "BAK !N$9
output.writeLong(fileSplitterFetch.nEndPos); RCJ|P~*
} IM*y|UHt
output.close(); g/4[N{Xf
} T%+#xl
catch(IOException e){e.printStackTrace ();} \-E^lIVF
catch(Exception e){e.printStackTrace ();} ??5Q)Erm1
} pG_;$8Hc
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//读取保存的下载信息(文件指针位置) >k|5Okq g
private void read_nPos() ^"E^zHM(
{ L]7=?vN=8
try{ />C^WQI^
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); z>xmRs
int nCount = input.readInt(); rDtY[
nStartPos = new long[nCount]; K&u_R
nEndPos = new long[nCount]; 1pVS&0W
for(int i=0;i<nStartPos.length;i++) .C%<P"=J4h
{ D#aDv0b
nStartPos = input.readLong(); b\f
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nEndPos = input.readLong(); #x@$lc=k3
} Nd4f^Y
input.close(); ]dVGUG8
} 4>YR{
catch(IOException e){e.printStackTrace ();} ]U?^hZ_
catch(Exception e){e.printStackTrace ();} <(#(hDwy
} 39c2pV[
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private void processErrorCode(int nErrorCode) . P viA
{ I]|Pq
System.err.println("Error Code : " + nErrorCode); oE@a'*.\
} ;T\%|O=Ke
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//停止文件下载 _1X!EH"
public void siteStop() BX/8O<s0
{ 2B1q*`6R
bStop = true; P.se'z)E
for(int i=0;i<nStartPos.length;i++) rE7G{WII
fileSplitterFetch.splitterStop(); PxX4[ P
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} 8bGd} (
} %X]jaX7
//负责部分文件的抓取 thh.A
**FileSplitterFetch.java R>|{N9
*/ Ng&%o
package NetFox; -
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import java.io.*; 1y&\5kB
import java.net.*; 1NFsb-<u
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public class FileSplitterFetch extends Thread { > tS'Q`R
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String sURL; //File URL 'ycJMYP8
long nStartPos; //File Snippet Start Position ^S<Y>Nm]
long nEndPos; //File Snippet End Position Y>z>11yEB0
int nThreadID; //Thread's ID W.jGGt\<\
boolean bDownOver = false; //Downing is over YRk(u7:0
boolean bStop = false; //Stop identical D>r&}6<
FileAccessI fileAccessI = null; //File Access interface &A/]pi-\
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException O^PKn_OJ
{ G&SB-
this.sURL = sURL; 3d8L6GJ
this.nStartPos = nStart; [Y/}
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this.nEndPos = nEnd; OF>mF~
nThreadID = id; 2>9C-VL2
fileAccessI = new FileAccessI(sName,nStartPos);//定位 1.JK33
} ZgJQ?S$D
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public void run() ~Gp[_ %K
{ .<?GS{6
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while(nStartPos < nEndPos && !bStop) yF:1( 4
{ 0JS?; fk
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try{ OKZV{Gja
URL url = new URL(sURL); 234p9A@
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); o 11jca|
httpConnection.setRequestProperty("User-Agent","NetFox"); Xq4O@V
String sProperty = "bytes="+nStartPos+"-"; E =67e=h
httpConnection.setRequestProperty("RANGE",sProperty); R- wp9 ^
Utility.log(sProperty); &AMl:@p9
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InputStream input = httpConnection.getInputStream(); Mt|zyXyzX
//logResponseHead(httpConnection); SGRp3,1\4%
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byte[] b = new byte[1024]; }Bh8=F3O
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int nRead; Y Uc+0
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) pad*oPH,
{ &E F!OBR
nStartPos += fileAccessI.write(b,0,nRead); \sixI;-2
//if(nThreadID == 1) 2DrM3ZU8
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 9=M$AB
} ;+_:,_
Q} JOU
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Utility.log("Thread " + nThreadID + " is over!"); |i*37r6]=
bDownOver = true; u#fM_>ML
//nPos = fileAccessI.write (b,0,nRead); /62!cp/F/D
} P5V}#;v
catch(Exception e){e.printStackTrace ();} \7eUw,~Q>
} ,t744k')
} UgRiIQMq.
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//打印回应的头信息 e]aDP1n3t
public void logResponseHead(HttpURLConnection con) nAato\mM
{ j_[tu!~
for(int i=1;;i++) +E+p"7
{ rKc9b<Ir
String header=con.getHeaderFieldKey(i); s^TZXCyF o
if(header!=null) FGJ1dBLr
//responseHeaders.put(header,httpConnection.getHeaderField(header)); =s{> Fsm1
Utility.log(header+" : "+con.getHeaderField(header)); *Q.>-J<S
else =Bey gT^
break; Jr4Ky<G_i
} uZYF(Yu
} @bLy,Xr&
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public void splitterStop() dQX6(Jj
{ 0> E r=,e
bStop = true; Dpac^ST
} <dNOd0e
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} E=Bf1/c\
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/* ttQGoUkj
**FileAccess.java m7V/zne
*//文件访问(定位,写) w.o@7|B1N
package NetFox; W
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import java.io.*; VGN5<?PrN
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public class FileAccessI implements Serializable{ 6_;icpN]
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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 {Mk6T1Bkq
RandomAccessFile oSavedFile; A{zN| S[
long nPos; (mB&m@-N
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public FileAccessI() throws IOException Q{>k1$fkV
{ T763:v
this("",0); ?j.,Nw4FC
} R\f+SvE
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public FileAccessI(String sName,long nPos) throws IOException 1GRCV8"Z^
{ >R_&Ouh:
oSavedFile = new RandomAccessFile(sName,"rw"); G_JA-@i%
this.nPos = nPos; 372rbY
oSavedFile.seek(nPos); TX/Xt7#R:
} ,p a {qne
/N.b%M]!
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public synchronized int write(byte[] b,int nStart,int nLen) c6]U E@A
{ 29b9`NXt
int n = -1; e9tjw[+A
try{ WU`
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oSavedFile.write(b,nStart,nLen); cjY-y-vO
n = nLen; ,`Z1m
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} gH vZVC[b
catch(IOException e) kD%( _K5
{ i]4I [!
e.printStackTrace (); n@i HFBb
} WwFm*4{[o
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return n; Or+U@vAnk
} _[3D
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} BO&bmfp7,
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/* ;'K5J9k
**SiteInfoBean.java gf@:R'$:+
*/ N+xP26D8
package NetFox; WH} y"W
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public class SiteInfoBean { 6gE7e|+
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private String sSiteURL; //Site's URL P@B]
private String sFilePath; //Saved File's Path x9g#<2w8
private String sFileName; //Saved File's Name p6@)-2^
private int nSplitter; //Count of Splited Downloading File n\DV3rXI9
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public SiteInfoBean() {\5
{//nSplitter的缺省值为5 ~
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//default value of nSplitter is 5
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this("","","",5); # W']6'O
}
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) vE?G7%,
{ aFYIM`?(
sSiteURL= sURL; F41=b4/
sFilePath = sPath; S\=Nn7"
sFileName = sName; `^&OF uee
this.nSplitter = nSpiltter; ##*3bDf$-5
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} 6_Y,eL]"
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public String getSSiteURL() wHy!CP%
{ fZF@k5*\
return sSiteURL; HZge!Yp<
} }}~ |!8
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public void setSSiteURL(String value) l_p2Riv
{ ,J@
sSiteURL = value; GTd,n=
} #6=
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public String getSFilePath() ?caSb=f
{ [W&T(%(W-
return sFilePath; 4r}51 N\
} ?@86P|19
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public void setSFilePath(String value) e^voW"?%
{ <5051UEu
sFilePath = value; 2+XAX:YD
} WyiQoN'q
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public String getSFileName() HRA|q
{ x%B%f`]8
return sFileName; GbI/4<)l}
} 59u}W 0
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public void setSFileName(String value) ob]w;"
{ XCQs2CHt
sFileName = value; h*\%vr
} PJ#,2=n~
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public int getNSplitter() |G<|F`Cj
{ ccxNbU
return nSplitter; h?U
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} i%?* @uj
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public void setNSplitter(int nCount) (ZlU^Gw#UB
{ ~xTt204S
nSplitter = nCount; -9?]IIVb
} u ga_T
} 6 u6x
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/* V7/Rby Q
**Utility.java [}m[ )L\
*/ gX@aG9
package NetFox; UiNP3TJ'L
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public class Utility { #vlgwA
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public Utility() Fr-SvsNFB
{ 7tp36 TE
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} j~MI<I+l[
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//线程睡眠 rJB}qYD
public static void sleep(int nSecond) Z_NCD`i;
{ 6]wIG$j
try{ ,esmV-
Thread.sleep(nSecond); ar,7S&s