/* BSSehe*
**SiteFileFetch.java (kK8
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*/ =w _T{V
package NetFox; Z9% u,Cb
import java.io.*; t,XbF
import java.net.*; Edh9=sxL
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public class SiteFileFetch extends Thread { <daH0l0
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SiteInfoBean siteInfoBean = null; //文件信息Bean ?_S);
long[] nStartPos; //开始位置 mpDxJk!
long[] nEndPos; //结束位置 y\iECdPU
FileSplitterFetch[] fileSplitterFetch; //子线程对象 7{S;~VH3
long nFileLength; //文件长度 4^Ks!S>K{8
boolean bFirst = true; //是否第一次取文件 sKiy1Ww
boolean bStop = false; //停止标志 srImk6YD
File tmpFile; //文件下载的临时信息 D2MIV&pahP
DataOutputStream output; //输出到文件的输出流 c(3idO*R)
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) UY.o,I>s
public SiteFileFetch(SiteInfoBean bean) throws IOException @frV:%
{ 4.kn,s
siteInfoBean = bean; Lq@uwiq!
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); gK *=T
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); XL1x8IB
if(tmpFile.exists ()) vHPsHy7y
{ ] TZ/=Id
bFirst = false; 11A;z[Zk
read_nPos(); G-o6~"J\
} +H?
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else ~ me/ve
{ PEKXPFN
nStartPos = new long[bean.getNSplitter()]; ,MLAW
nEndPos = new long[bean.getNSplitter()]; w);Bet
} vBY?3p,0p
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} 6k|f]BCL
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public void run() ,;h}<("q
{ [RDY(}P%
//获得文件长度 .36]>8
//分割文件 ZtI@$ An
//实例FileSplitterFetch RS{E|
//启动FileSplitterFetch线程 B-$ps=G+z
//等待子线程返回 N;cSR\Ng
try{ .z,`{-7U
if(bFirst) f_. 0 uM
{ 4)snt3k
nFileLength = getFileSize(); %W2
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if(nFileLength == -1) |A)a
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{ mP
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System.err.println("File Length is not known!"); -}>H3hr
} -ozcK
else if(nFileLength == -2) xUB{{8B:L
{ dhr-tw
System.err.println("File is not access!"); J>0RN/38o
} $j0<ef!
else "(;t`,F
{ cMAY8$
for(int i=0;i<nStartPos.length;i++) xI5zP?
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{ OL@' 1$/A
nStartPos = (long)(i*(nFileLength/nStartPos.length)); ZP4y35&%y
} 5pxw[c53#
for(int i=0;i<nEndPos.length-1;i++) U;U19[]
{ H<3ayp$
nEndPos = nStartPos[i+1]; M9(Kxux#
} HwBJUr91]
nEndPos[nEndPos.length-1] = nFileLength; U]iZ3^8VT
} )dRBI)P
} DV~g
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//启动子线程 l`E KL2n
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; r
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for(int i=0;i<nStartPos.length;i++) 'u%SI]*;>
{ YM +4:P2
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), .!g
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ,k6V?{ZA
nStartPos,nEndPos,i); )s8{|) -
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ]nx5E_j2
fileSplitterFetch.start(); #D8u#8Dz
} BHIC6i%
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ]Cc8[ZC
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); -Rr Qv(
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", T=T1?@2C
nEndPos = " + nFileLength); <ta#2
// fileSplitterFetch[nPos.length-1].start(); S>EO6z#
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//等待子线程结束 Qr*7bE(a
//int count = 0; Jnq}SUev
//是否结束while循环 W0N*c*k
boolean breakWhile = false; JO|xX<#:
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while(!bStop) b:6e2|xf?
{ Ve|=<7%%S
write_nPos(); ~&Y%yN^
Utility.sleep(500); JcI~8;Z@Z~
breakWhile = true; Zl=IZ?F
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for(int i=0;i<nStartPos.length;i++) #s|/5[i
{ FDIOST !
if(!fileSplitterFetch.bDownOver) Gbc2\A\
{ 0D^c4[Y'l
breakWhile = false; 2g_2$)2
break; `EzC'e
} {~~'
} iea7*]vW
if(breakWhile) `:;fc
break; vI+X9C?
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//count++; '645Fr[lg
//if(count>4) LP5@ID2G
// siteStop(); rsC^Re:*jr
} mpDQhD[n
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System.err.println("文件下载结束!"); E|omC_h
} S"Mm_<A$@
catch(Exception e){e.printStackTrace ();} y@u,Mv
} y>_*}>2 ,O
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//获得文件长度 Tq!.M1{&
public long getFileSize() s_Gf7uC
{ jL9to6 Hmr
int nFileLength = -1; |s*tRag
try{ ~ YCZvJ
URL url = new URL(siteInfoBean.getSSiteURL()); w2o5+G=
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ub=Bz1._
httpConnection.setRequestProperty("User-Agent","NetFox"); xC.Tipn>
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int responseCode=httpConnection.getResponseCode(); "gGv>]3
if(responseCode>=400) eUm,=s
{ WxI_wRKx
processErrorCode(responseCode); dI$M9;
return -2; //-2 represent access is error R}Z2rbt
} |;(0]
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String sHeader; >p@v'h/Cr
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for(int i=1;;i++) O2C&XeB:4
{ $jgEB+
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); )0p7d:%mV
//Utility.log(in.readLine()); FW--|X]8
sHeader=httpConnection.getHeaderFieldKey(i); qQx5n
if(sHeader!=null) :x/L.Bz
{ n6s[q-td
if(sHeader.equals("Content-Length")) k&SI-jxj
{ ^h\Y.
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); p}O[A`
break; kxVR#:
} +LeM[XX
} x4nmDEpa
else 7\sR f/
break; $mq@g
} w@"l0gm+u[
} JN:EcVuy
catch(IOException e){e.printStackTrace ();} e!JC5Al7
catch(Exception e){e.printStackTrace ();} c6Z\ecH9
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Utility.log(nFileLength); OVgx2_F
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return nFileLength; j9]H~:g$d
} O[/l';i
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//保存下载信息(文件指针位置) y(uE
private void write_nPos() ej&ZE
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{ La#otuw+?
try{ STY\c5
output = new DataOutputStream(new FileOutputStream(tmpFile)); :r,o-D
output.writeInt(nStartPos.length); `'
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for(int i=0;i<nStartPos.length;i++) l&LrcM
{ UpIt"+d2&
// output.writeLong(nPos); yCLDJ%8
output.writeLong(fileSplitterFetch.nStartPos); |#_`aT"
output.writeLong(fileSplitterFetch.nEndPos); Eggdj+
} wEJ) h1=)^
output.close(); /!L#cUog
} !Al?B9KJ
catch(IOException e){e.printStackTrace ();} 22gk1'~dO
catch(Exception e){e.printStackTrace ();} .S=^)
} qe"t0w|U?
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//读取保存的下载信息(文件指针位置) "ZU CYYre
private void read_nPos() /,m!SRJ
{ ui$JQ _P
try{ ?YTngIa
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); H^N
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int nCount = input.readInt(); DEcsFC/SK
nStartPos = new long[nCount]; a2tRmil
nEndPos = new long[nCount]; E |BE(F;K
for(int i=0;i<nStartPos.length;i++) NHjZ`=Js
{ C/L+gU&
nStartPos = input.readLong(); 7xr@$-U
nEndPos = input.readLong(); ;Q&|-`NK
} ;)nV
input.close(); ~xSAR;8
} ollk {N
catch(IOException e){e.printStackTrace ();} sq~9
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catch(Exception e){e.printStackTrace ();} A:-r2;xB
} quEP"
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private void processErrorCode(int nErrorCode) X|iWnz+^
{ V<%eWT)x7C
System.err.println("Error Code : " + nErrorCode); 9;*-y$@
} &>]c"?C*
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//停止文件下载 2y0J~P! I
public void siteStop() SlRQi:
{ cB ,l=/?
bStop = true; vm
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for(int i=0;i<nStartPos.length;i++) bb]r
fileSplitterFetch.splitterStop(); 6bXR?0$*M.
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} 2a3RRP
} WFTXSHcG
//负责部分文件的抓取 yaD_c;
**FileSplitterFetch.java X/l{E4Ex
*/ 3r]:k)J
package NetFox; ~Os1ir.
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import java.io.*; {hmC=j
import java.net.*; [_pw|BGp
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public class FileSplitterFetch extends Thread { ?mCino
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String sURL; //File URL I\DH
long nStartPos; //File Snippet Start Position XFiP8aX<
long nEndPos; //File Snippet End Position &=-ZNWNo
int nThreadID; //Thread's ID qlJzXq{|`
boolean bDownOver = false; //Downing is over (WISf}[l;
boolean bStop = false; //Stop identical z9B""ws
FileAccessI fileAccessI = null; //File Access interface bkvm-$/
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 8wXnc%
{ WX9ABh& 5
this.sURL = sURL; -xXz}2S4
this.nStartPos = nStart; :47bf<w|Y
this.nEndPos = nEnd; ?2zbZ
nThreadID = id; Z@G[\"
fileAccessI = new FileAccessI(sName,nStartPos);//定位 TJY
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} 2`?58&
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public void run() EL?6x
{ qZS]eQW.
while(nStartPos < nEndPos && !bStop) @3Lh/&
{ Duu)8ru
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try{ >$RQ
URL url = new URL(sURL); P d"=&Az|
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); z3bRV{{YqN
httpConnection.setRequestProperty("User-Agent","NetFox"); nN]GO}
String sProperty = "bytes="+nStartPos+"-"; 1j!LK-
httpConnection.setRequestProperty("RANGE",sProperty); w I7iE4\vz
Utility.log(sProperty); 1_of;=9V
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InputStream input = httpConnection.getInputStream(); s)L\D$;+O
//logResponseHead(httpConnection); t{ R\\j
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byte[] b = new byte[1024]; 5!b+^UR;z
int nRead; $Sx(vq6(
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) /~O>He
{ j^Vr!y
nStartPos += fileAccessI.write(b,0,nRead); @X?7a]+;8
//if(nThreadID == 1) OABMIgX
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ?DwI>< W
} 4Ucs9w3[
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Utility.log("Thread " + nThreadID + " is over!"); 1LK`
bDownOver = true; EDA%qNd]j
//nPos = fileAccessI.write (b,0,nRead); S#{jyU9 ]
} b5@sG^
catch(Exception e){e.printStackTrace ();} sYG:\>}ie
} vR)f'+_Nz
} s<XAH7?0
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//打印回应的头信息 n?[JPG2X
public void logResponseHead(HttpURLConnection con) i0TbsoKh:
{ (\8~W*ej"
for(int i=1;;i++) RXD*;B$v
{ X>la!}sV
String header=con.getHeaderFieldKey(i); UD!-.I]
if(header!=null) t4P`#,:8
//responseHeaders.put(header,httpConnection.getHeaderField(header)); nZbINhls
Utility.log(header+" : "+con.getHeaderField(header)); W0 n?S
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else "PD^]m
break; kF@Z4MB}yr
} IW{}l=D/
} d$H
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public void splitterStop() \`:nmFO(9
{ AbExJ~JV\g
bStop = true; sy]hMGH:3W
} x_+-TC4IXn
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} li37*
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/* iCtDV5
**FileAccess.java
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*//文件访问(定位,写) V"Sa9P{y"
package NetFox; !0Mx Bem
import java.io.*; -\9K'8 C
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public class FileAccessI implements Serializable{ o}p^q:T*
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//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 cFZcBiw
RandomAccessFile oSavedFile; *8I"7'xh
long nPos; 'nT#c[x[0
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public FileAccessI() throws IOException ! }>CEE
{ =G9I7Y@
this("",0); rk-GQ#SKU
} fpa~~E-
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public FileAccessI(String sName,long nPos) throws IOException KDS}"/
{ 7C9_;81_Dt
oSavedFile = new RandomAccessFile(sName,"rw"); -hY@r 7y
this.nPos = nPos; |kGQ~:k+P
oSavedFile.seek(nPos); +WjX@rSq[
} ~+)>D7
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public synchronized int write(byte[] b,int nStart,int nLen) oMNSQMlI
{ T' > MXFLh
int n = -1; &\y`9QpVF
try{ AGGT]
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oSavedFile.write(b,nStart,nLen); ^~;"$=Wf
n = nLen; 7|PB6h3
} Ii&\LJ
catch(IOException e) RG.wu6Av
{ v{X<6^g
e.printStackTrace (); !$hi:3{U,
} I<rT\':9
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return n; #:NY9.\o
} ni85Ne$
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} GO)5R,
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/* bO` SBq$
**SiteInfoBean.java @h9QfJ_f
*/ DF>3)oTF
package NetFox; SLW|)Q24
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public class SiteInfoBean { 2FcNzAaV
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private String sSiteURL; //Site's URL v5\5:b{/
private String sFilePath; //Saved File's Path V}Ee1C
private String sFileName; //Saved File's Name :,ucJ|
private int nSplitter; //Count of Splited Downloading File #g/m^8n?s
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public SiteInfoBean() j5[Y0)pV\
{//nSplitter的缺省值为5 $XI.`L *g
//default value of nSplitter is 5 M-Ek(K3SRf
this("","","",5); %Gl1Qi+Po_
} PIAE6,*
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) S Rk%BJ? ~
{ Ci4;e
sSiteURL= sURL; U&ytZ7iB
sFilePath = sPath; #jh5% @
sFileName = sName; THlQifA!
this.nSplitter = nSpiltter; l8khu)\n4R
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} a^8PB|G
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public String getSSiteURL() pC]XbokES
{ Re2&qxE
return sSiteURL; snWe&