/* v 6
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**SiteFileFetch.java peVY2\1>R
*/ \6wltTW]#
package NetFox; @rYZ0`E9
import java.io.*; 1Vy8eI`4
import java.net.*; LO_Xrj
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public class SiteFileFetch extends Thread { M7/5e3
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SiteInfoBean siteInfoBean = null; //文件信息Bean p%$r\G-x
long[] nStartPos; //开始位置 %@PcQJg U<
long[] nEndPos; //结束位置 N/o?\q8
FileSplitterFetch[] fileSplitterFetch; //子线程对象 dHY@V>D'-
long nFileLength; //文件长度 PA^*|^;Xh
boolean bFirst = true; //是否第一次取文件 >
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boolean bStop = false; //停止标志 ;5/Se"Nd
File tmpFile; //文件下载的临时信息 mfj{_fR3
DataOutputStream output; //输出到文件的输出流 SD^::bH
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) z\|<h=EU
public SiteFileFetch(SiteInfoBean bean) throws IOException ] V/5<O1
{ q]="ek&_
siteInfoBean = bean; E:9RskI
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); &}u_e`A
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); >&.N_,*
if(tmpFile.exists ()) w~+*Vd~U
{ D+!T5)>(
bFirst = false; &MX&5@
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read_nPos(); l -XfUjJ
} Qr
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else <sC(a7i1
{ fQ 9af)d
nStartPos = new long[bean.getNSplitter()]; )zWu\JRp
nEndPos = new long[bean.getNSplitter()]; (Mfqzy
} \Q#pu;Y*N]
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} {Vu=qNx
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public void run() <2(X?,N5BD
{ (hwzA
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//获得文件长度
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//分割文件 <IZr..|O
//实例FileSplitterFetch t 9(,JC0
//启动FileSplitterFetch线程 q,sO<1wAT\
//等待子线程返回 D!* SA
try{ 3mo<O}}
if(bFirst) gkK(7=r%
{ EZWWvL
nFileLength = getFileSize(); PlCw,=K 8f
if(nFileLength == -1) 2_Lu0Yrg
{ Idu'+O4
System.err.println("File Length is not known!"); eV_",W
} MTwzL<@$
else if(nFileLength == -2) b|87=1^m[
{ 9+(b7L
System.err.println("File is not access!"); HHx5VI
} ]fY:+Ru
else :LuA6
{ "A[.7 w
for(int i=0;i<nStartPos.length;i++) {v!w2p@
{ c:=HN-*vQ
nStartPos = (long)(i*(nFileLength/nStartPos.length)); =?CIC%6m
} .P8m%$'N
for(int i=0;i<nEndPos.length-1;i++) Y3|_&\v6
{ Oh}52=
nEndPos = nStartPos[i+1]; }G(#jOYk
} 5#z7Hj&w
nEndPos[nEndPos.length-1] = nFileLength; c
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} =8vwaJ
} #pWy%U
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//启动子线程 :tENn
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fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ([m4dr
for(int i=0;i<nStartPos.length;i++) <OiH%:G/1
{ #+i5'p(4
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), MNh:NFCRA
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), {%2p(5FB
nStartPos,nEndPos,i); 5bZ0}^FYF
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); JiqhCt\
fileSplitterFetch.start(); D{7sfkcJ
} N/C$8D34
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), #x;d+Q@
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); &gh>'z;`r
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ht\_YiDg3
nEndPos = " + nFileLength); = m|<~t
// fileSplitterFetch[nPos.length-1].start(); 7LaRFL.,kO
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//等待子线程结束 Y;\@
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//int count = 0; a{e1g93}
//是否结束while循环 {_>XsB
boolean breakWhile = false; p>U= Jg
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while(!bStop) Us[F@
{ _or_Vw!
write_nPos(); asW
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Utility.sleep(500); {#t7lV'4
breakWhile = true; t.!?"kP"c
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for(int i=0;i<nStartPos.length;i++) s_Z5M2o
{ 1q
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if(!fileSplitterFetch.bDownOver) 6d5q<C_3t
{ $5#DU__F/
breakWhile = false; OZKZv,
break; 4Qi-zNNB
} ,\T `gh
} >of9m
if(breakWhile) CTqhXk[
break; &i805,lx
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//count++; D=f$-rn
//if(count>4) B<|Vm.D
// siteStop(); 5IgO4 <B
} 6!6R3Za$
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System.err.println("文件下载结束!"); HKC&grp
} Wa!C2nB
catch(Exception e){e.printStackTrace ();} juWbd|ad"
} ?>R(;B|ER
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}_}LaEYAo
//获得文件长度 c?Zi/7
public long getFileSize() >2'A~?%
{ A/ Sj>Y1j
int nFileLength = -1; N7q6pBA"E
try{ B90fUK2g
URL url = new URL(siteInfoBean.getSSiteURL()); {\h:k\k
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ubKp
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httpConnection.setRequestProperty("User-Agent","NetFox"); 'v(b^x<ZS
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int responseCode=httpConnection.getResponseCode(); =FAIbM>u
if(responseCode>=400) +wEsfYW
{ Tj2pEOu
processErrorCode(responseCode); ^%1u3
return -2; //-2 represent access is error ]P_yN:~
} zq$0 ?vGd
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String sHeader; I,/E.cRV<
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for(int i=1;;i++) uesIkJ^Q[
{ j3R}]F'C*
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); +}g6X6m
//Utility.log(in.readLine()); z
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sHeader=httpConnection.getHeaderFieldKey(i); Lu71Qdu09
if(sHeader!=null) *y~~~ 'J/
{ e\ZV^h}TQ
if(sHeader.equals("Content-Length")) gP!k[E,Q8
{ Gfepm$*%
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); "`KT7
break; VTO92Eo
} nwi8>MG
} \h}sA
else ?%T]V+40
break; E]pDp
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} j^/^PUR
} z>*\nomOn=
catch(IOException e){e.printStackTrace ();} TQpR'
catch(Exception e){e.printStackTrace ();} EQy~ ^7V B
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Utility.log(nFileLength); E,/nK
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return nFileLength; #Fh:z4
} =s:Z-*vy!
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//保存下载信息(文件指针位置) d263#R
private void write_nPos() )SaMfP1=v
{ =|V#~p*
try{ Om8Sgy?
output = new DataOutputStream(new FileOutputStream(tmpFile)); 3[R[`l]v?
output.writeInt(nStartPos.length); \mFgjPz
for(int i=0;i<nStartPos.length;i++) H96|{q=
{ Jb|dpu/e
// output.writeLong(nPos); k7nke^,|
output.writeLong(fileSplitterFetch.nStartPos); dFk$rr>q
output.writeLong(fileSplitterFetch.nEndPos); $L72%T
} h\|T(597.
output.close(); |4Os_*tRKU
}
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catch(IOException e){e.printStackTrace ();} lgefTT GX)
catch(Exception e){e.printStackTrace ();} <,t6A?YoMP
} Go7 oj'"
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//读取保存的下载信息(文件指针位置) As|e=ut(
private void read_nPos() i@ehD@.dH
{ ^5R2~
try{ Y";KWA}b
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); !!)NER-dv
int nCount = input.readInt(); r:t3Kf`+E-
nStartPos = new long[nCount]; > q8)~
nEndPos = new long[nCount]; riSgb=7q9
for(int i=0;i<nStartPos.length;i++) M
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{ lG`%4}1
nStartPos = input.readLong(); .6pVt_f0/
nEndPos = input.readLong(); V+$fh2t
} ._6Q "JAB
input.close(); nCLEAe$W\=
} =AX"'q
catch(IOException e){e.printStackTrace ();} 2zkOs:
catch(Exception e){e.printStackTrace ();} \|
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} D0X!j,Kc
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private void processErrorCode(int nErrorCode) ($,qxPOn
{ N@I=X-7nh|
System.err.println("Error Code : " + nErrorCode); TV?MB(mN
} ey`E
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//停止文件下载 +-Z `v
public void siteStop() p<\7" SB=
{ ,HK-mAH
bStop = true; ]}9[ys
for(int i=0;i<nStartPos.length;i++) ^K:-r !v^
fileSplitterFetch.splitterStop(); ,-SWrp`f
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} 6P02=
} PeJIa
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//负责部分文件的抓取 !WTL:dk
**FileSplitterFetch.java &&
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*/ xks Me
package NetFox; 2k^'}7G%
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import java.io.*; 5I/lF oy7
import java.net.*; fN6n2*wr(
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public class FileSplitterFetch extends Thread { 1/J6<FVq
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String sURL; //File URL "-Wb[*U;
long nStartPos; //File Snippet Start Position f7&9IW`7F^
long nEndPos; //File Snippet End Position =OFx4#6a
int nThreadID; //Thread's ID <sls1,
boolean bDownOver = false; //Downing is over 0CK3jdZ+X
boolean bStop = false; //Stop identical k\-h-0[|
FileAccessI fileAccessI = null; //File Access interface HmbQL2
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException plM:7#eA
{ ,OFNV|S$
this.sURL = sURL; yV*4|EkvW
this.nStartPos = nStart; m"wP]OQH*+
this.nEndPos = nEnd; ^p3W}D
nThreadID = id; ]#vi/6\J
fileAccessI = new FileAccessI(sName,nStartPos);//定位 sEi9<$~R@0
} ZKai*q4?
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public void run() U+&Eps&NI
{ "NTiQ}i
while(nStartPos < nEndPos && !bStop) XJ7pX1nf
{ "6Z(0 iu:{
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try{ M[(pLYq:
URL url = new URL(sURL); S1U[{R?,
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); w[AL'1s]
httpConnection.setRequestProperty("User-Agent","NetFox"); ]88qjKL
String sProperty = "bytes="+nStartPos+"-"; $dG:29w
httpConnection.setRequestProperty("RANGE",sProperty); U_WO<uhC
Utility.log(sProperty); IRTD(7"oyp
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InputStream input = httpConnection.getInputStream(); DKF
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//logResponseHead(httpConnection); Rx?ze(
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byte[] b = new byte[1024]; R[@}Lg7+v
int nRead; X!m
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while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) ],Yy)<e.
{ /@I`V?Q!a
nStartPos += fileAccessI.write(b,0,nRead); 6"R'z#{OF
//if(nThreadID == 1) >T-4!ZvS\j
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); =nqHVRA
} dg_w$#
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Utility.log("Thread " + nThreadID + " is over!"); uF<?y0t
bDownOver = true; ~0@fK<C)O
//nPos = fileAccessI.write (b,0,nRead); AWJA?
} QQv%>=_`
catch(Exception e){e.printStackTrace ();} <T&v\DN
} '.&Y)A6!
} D}Sww5ZmP
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//打印回应的头信息 l>KkAA
public void logResponseHead(HttpURLConnection con) '.k'*=cq0
{ ^b.#4i(v
for(int i=1;;i++) 6[SIDOp*^
{ <>728;/C
String header=con.getHeaderFieldKey(i); 6&il>
if(header!=null) @_1cY#!
//responseHeaders.put(header,httpConnection.getHeaderField(header)); c94=>p6
Utility.log(header+" : "+con.getHeaderField(header)); p}<60O"r$
else ?'_6M4UKa
break; gtePo[ZH.P
} B9Hib1<8
} X0R EC%
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public void splitterStop() dqs~K7O^E
{ V:vqt@
bStop = true; !F.h+&^D;
} PcqS#!t
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} p4
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/* ,~DV0#"
**FileAccess.java e[s}tjx
*//文件访问(定位,写) P-3f51 Q
package NetFox; =1@LMIi5x
import java.io.*; EC 1|$Co
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public class FileAccessI implements Serializable{ =4l @A>
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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 v?Utz~lQ
RandomAccessFile oSavedFile; gu+zfvkcY
long nPos;
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public FileAccessI() throws IOException kwL|gO1L
{ -%@ah:iJ
this("",0); 5doi4b>]!
} {ywwJ
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public FileAccessI(String sName,long nPos) throws IOException 7eAV2.
{ X-(4/T+v
oSavedFile = new RandomAccessFile(sName,"rw"); JO+tY[q
this.nPos = nPos; &T~X`{V]`
oSavedFile.seek(nPos); -Ep#q&\
} %,~?;JAj
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public synchronized int write(byte[] b,int nStart,int nLen) ]%FAJ\
{ a4*976~![
int n = -1; p6R+t]oH
try{ zX4RqI
oSavedFile.write(b,nStart,nLen); N+@ Ff3M
n = nLen; 6-fv<Pn
} R$8{f:Pj
catch(IOException e) (+[%^96
{ xcU!bDV
e.printStackTrace (); 7J!s"|VS
} W(R~K -
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return n; q]I aRho
} Dzf\m>H[
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} e-`.Ht
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/* o3/o2[s
**SiteInfoBean.java #-<Go'yF
*/ BEvY&3%l
package NetFox; bo/9k 4N3
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public class SiteInfoBean { [Hx(a.,d
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private String sSiteURL; //Site's URL VMRfDaO9
private String sFilePath; //Saved File's Path !>n!Q*\(Ov
private String sFileName; //Saved File's Name T+ZA"i+
private int nSplitter; //Count of Splited Downloading File $3G^}A"
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public SiteInfoBean() ld@+p
{//nSplitter的缺省值为5 eIY`RMo
(
//default value of nSplitter is 5 |HD>m'e
this("","","",5); 8 O9^g4?
} +w^,!gA&
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) in<.0v9w
{ :J]'c}
sSiteURL= sURL; t{jY@JT|
sFilePath = sPath; b>OB}Is
sFileName = sName; w\o6G7
this.nSplitter = nSpiltter; W~;Jsd=f
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} V;xPZ2C;
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public String getSSiteURL() 6r<a
{ Lz.khE<
return sSiteURL; R+Hu?Dv&F
} |p&EP2?T
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public void setSSiteURL(String value) &/]en|f"
{ :^3 )[.m
sSiteURL = value; {x_.QWe5
} 0N$7(.
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public String getSFilePath() _w4G|j$C
{ @/.#
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return sFilePath; ["EXSptB
} 7sxX?u
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public void setSFilePath(String value) n9+33^ PT
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sFilePath = value; 0vm> *M*p
} W/!P1M n
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public String getSFileName() d^aVP
{ P[
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return sFileName; OB(oOPH
} x950,`zy
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public void setSFileName(String value) VO|ECB2e
{ w+R/>a(]
sFileName = value; 2F:qaz
} u;_h%z5K
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public int getNSplitter() e
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{ ^~YT<cJ1h
return nSplitter; wsWFD xR
} {=ox1+d
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public void setNSplitter(int nCount) ;t{q]"? W
{ o6[.$C
nSplitter = nCount; )@N d3Z
} '[{<aEo
} UucI>E3?P{
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/* Jbu2y'zE
**Utility.java }mj9$=B4
*/ '>"{yi-
package NetFox; /sA&}kX}E
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