/* TE9Iyl|=
**SiteFileFetch.java c6T[2Ig
*/ eg1Mdg\a
package NetFox; R>t?6HOcp
import java.io.*; Itz[%Dbiq9
import java.net.*; YuUJgt .1
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public class SiteFileFetch extends Thread { /|p\l"
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SiteInfoBean siteInfoBean = null; //文件信息Bean eiQ42x@Z
long[] nStartPos; //开始位置 IP
long[] nEndPos; //结束位置 ,MjlA{0
FileSplitterFetch[] fileSplitterFetch; //子线程对象 '2Lx>nByk
long nFileLength; //文件长度 m}(M{^\|
boolean bFirst = true; //是否第一次取文件 DkEf;P
boolean bStop = false; //停止标志 - -\eYVh[
File tmpFile; //文件下载的临时信息 qjsEyro$-
DataOutputStream output; //输出到文件的输出流 " ?Ux\)*
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) _;,"!'R`f
public SiteFileFetch(SiteInfoBean bean) throws IOException Iw4[D#o
{ T#\=v(_NR
siteInfoBean = bean; H]}mg='kI
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); mX%T"_^
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); pr[V*C/
if(tmpFile.exists ()) -(},%!-_
{ }9V0Cu1
bFirst = false; Nwo*tb:
read_nPos(); +|--}iE5n
} X%$1%)C9
else Zb7%$1)L~
{ p}Um+I=1
nStartPos = new long[bean.getNSplitter()]; H;seT XL
nEndPos = new long[bean.getNSplitter()]; Qv<p$Up6
} `MHixQ;j
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public void run() z(u,$vZ_
{ o:B?hr'\
//获得文件长度 &]tm'N25
//分割文件 Xf[;^?]X
//实例FileSplitterFetch nsM.`s@V
//启动FileSplitterFetch线程 %d%FI"!K
//等待子线程返回 *'*,mfk[
try{ ;9Qxq]
if(bFirst) "(iDUl
{ /
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nFileLength = getFileSize(); #iQF)x| D
if(nFileLength == -1) /BN=Kl]
{ XmaRg{22
System.err.println("File Length is not known!"); icQQLSU5
} 8>9MeDE
else if(nFileLength == -2) I/%L,XyRI
{ !ALq?u
System.err.println("File is not access!"); O6,2M[a
} e=s({V
else F|G v
{ 9 I:3
for(int i=0;i<nStartPos.length;i++) 3mHP=)
{ G?, "AA;
nStartPos = (long)(i*(nFileLength/nStartPos.length)); O)ose?Z
} AV4fN@BX
for(int i=0;i<nEndPos.length-1;i++) +4p=a [
{ * H~=dPC
nEndPos = nStartPos[i+1]; [%P[ x]-
} :*/g~y(fE
nEndPos[nEndPos.length-1] = nFileLength; ^ p7z3ng
} A9KPU:
} Qp7F3,/#
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//启动子线程 Yhz Dw8f
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; AiL80W^=d)
for(int i=0;i<nStartPos.length;i++) v0TbQ
{ >oN Wf
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), }]M'f:%b
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), BnfuI
nStartPos,nEndPos,i); %O!TS_~9
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); kT]jJbb"
fileSplitterFetch.start(); ]0O3kiVQ
} &grvlK
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), j;qV+Rq]t
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 7PuYrJ
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", VT-%o7%N
nEndPos = " + nFileLength); Dc*
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// fileSplitterFetch[nPos.length-1].start(); D+jE{v'
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//等待子线程结束 ?~IdPSY
//int count = 0; ^QjkZ^<dD
//是否结束while循环 4e?bkC
boolean breakWhile = false; H DD)AM&p
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while(!bStop) `A5n6*A7
{ CbXSJDs
write_nPos(); M6 8foeeN
Utility.sleep(500); 7<=p*
breakWhile = true; <CJy3<$u
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for(int i=0;i<nStartPos.length;i++) y(/5l
{ =c$x xEDD
if(!fileSplitterFetch.bDownOver) Q/]o'_[vW
{ sxS%1hp3
breakWhile = false; a#G3 dY>
break; Pd& Npp3
} R^=v&c{@
} ay||yn:
if(breakWhile) W8Wjq
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break; I(WIT=Wi<
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//count++; @nMVs6
//if(count>4) 2s>BNWTU
// siteStop(); ^7*7^<
} MslgQmlM
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System.err.println("文件下载结束!"); f& \Bs8la
} lFduX D
catch(Exception e){e.printStackTrace ();} m`n~-_
} /2hRLyeAZ
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//获得文件长度 FV3[7w=D\
public long getFileSize() fYzP4
{ X$@qs9?)^
int nFileLength = -1; 00s)=A_
try{ XPZ8*8JL
URL url = new URL(siteInfoBean.getSSiteURL()); k.jBu
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Rry]6(
httpConnection.setRequestProperty("User-Agent","NetFox"); -rjQ^ze
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int responseCode=httpConnection.getResponseCode(); l]#=I7 6
if(responseCode>=400) l!KPgRw
{ kj.9\
processErrorCode(responseCode); ?FUK_]
return -2; //-2 represent access is error _<DOA:'v
} 6`G8 UDK>F
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String sHeader; %3|/t-US
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for(int i=1;;i++) TI<3>R
{ 2_6ON
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); h:U#F )
//Utility.log(in.readLine()); aG]^8`~>'
sHeader=httpConnection.getHeaderFieldKey(i); 1Sza%D;3
if(sHeader!=null) v`jHd*&6)
{ >T\@j\X4
if(sHeader.equals("Content-Length")) IbJl/N%o
{ s$(%?,yf2
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); >dJ~
break; $+ N~Fa
} Lfdg5D5.P
} ij~-
else S0gxVd(
break; +Mhk<A[s
} %W2U$I5
} "vQ%`
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catch(IOException e){e.printStackTrace ();} RLL%l
catch(Exception e){e.printStackTrace ();} Z
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Utility.log(nFileLength); ?Yf
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return nFileLength; $$W2{vr7+
} PB.'huu
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//保存下载信息(文件指针位置)
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private void write_nPos() oyY
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{ INp:;
try{ `4X.UPJ
output = new DataOutputStream(new FileOutputStream(tmpFile)); U<q`f-
output.writeInt(nStartPos.length); &Td)2Wt
for(int i=0;i<nStartPos.length;i++) c3ru4o*K
{ ~e]B[>PT
// output.writeLong(nPos); }&v-<qC^
output.writeLong(fileSplitterFetch.nStartPos); HwZl"!;Mry
output.writeLong(fileSplitterFetch.nEndPos); HC1<zW[
} ^k$Bx_{
output.close(); O6 s3#iu
} b SgbvnJ
catch(IOException e){e.printStackTrace ();} ~k?wnw
catch(Exception e){e.printStackTrace ();} /':64#'
} /'E[03I~
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//读取保存的下载信息(文件指针位置) NWPT89@ l
private void read_nPos() ?6nB=B)/
{ QT73=>^B
try{ =Ry8E2NuM
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Fj2z$
int nCount = input.readInt(); cQ1Axs TO
nStartPos = new long[nCount]; -$:*!55:j
nEndPos = new long[nCount]; a~a:mM>p
for(int i=0;i<nStartPos.length;i++) L-S5@;"
{ 2
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nStartPos = input.readLong(); |r,})o>
nEndPos = input.readLong(); x{zZ%_F
} YcclO
input.close(); vM!2?8bEFd
} XzX2V">(%
catch(IOException e){e.printStackTrace ();} 5#N<~
catch(Exception e){e.printStackTrace ();} +>;Ux1'@
} |e+3d3T35
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private void processErrorCode(int nErrorCode) V_D wHq2
{ DTM(SN8R+n
System.err.println("Error Code : " + nErrorCode); Lk@+iHf
} a#% *H
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//停止文件下载 ZWGX*F#}P
public void siteStop() (VI(Nv:o@
{ Jr;w>8B),
bStop = true; wbcip8<t
for(int i=0;i<nStartPos.length;i++) n'{jc6&|
fileSplitterFetch.splitterStop(); x=L"qC9f/
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} &~/g[\Y
} 2RF3pIFrm
//负责部分文件的抓取 LklE,W
**FileSplitterFetch.java ]v),[]Xs
*/ W2h4ej\s
package NetFox; m9MYd
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import java.io.*; tjB)-=j[
import java.net.*; t?)]xS)
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public class FileSplitterFetch extends Thread { R@5eHP^
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String sURL; //File URL s-'~t#h
long nStartPos; //File Snippet Start Position EA1&D^nT
long nEndPos; //File Snippet End Position ss }-YnG
int nThreadID; //Thread's ID 4g2`[< S
boolean bDownOver = false; //Downing is over
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boolean bStop = false; //Stop identical $6J22m!S4n
FileAccessI fileAccessI = null; //File Access interface lxgfi@@+h
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException s5+;8u9K
{ ~vA8I#.
this.sURL = sURL; KU{zzn;g
this.nStartPos = nStart; f{O-\
this.nEndPos = nEnd; KehM.c^
nThreadID = id; zDtC]y'
fileAccessI = new FileAccessI(sName,nStartPos);//定位 SFtcO
} (G} }h
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public void run() a?GXVQ
{ =-/'$7R,
while(nStartPos < nEndPos && !bStop) {d xl8~/I
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try{ .bP8Z=
URL url = new URL(sURL); e&:%Rr]x
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); L'`Au/%S}
httpConnection.setRequestProperty("User-Agent","NetFox"); LJb=9tp~
String sProperty = "bytes="+nStartPos+"-"; 4:Ju|g]O
httpConnection.setRequestProperty("RANGE",sProperty); :k`Qj(7S
Utility.log(sProperty); \ >wQyz
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InputStream input = httpConnection.getInputStream(); WHOy\j},V
//logResponseHead(httpConnection); %g5#q64
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byte[] b = new byte[1024]; lDKyD`WKnZ
int nRead; jVOq/o
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) ?f3R+4
{ B=%%3V)2
nStartPos += fileAccessI.write(b,0,nRead); C{nk,j
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//if(nThreadID == 1) J1cz
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// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); u*5}c7)uId
} 4|5;nxkGm8
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Utility.log("Thread " + nThreadID + " is over!"); !t~tIJ>6
bDownOver = true; L
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//nPos = fileAccessI.write (b,0,nRead); Hhk`yX c_
} s?S e]?i
catch(Exception e){e.printStackTrace ();} yX{7<\x
} <o3I<ci6
} FJ!`[.t1AU
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//打印回应的头信息 sUmpf 4/
public void logResponseHead(HttpURLConnection con) ,?qJAV~>
{ ]}l.*v\uK
for(int i=1;;i++) j1->w8
{ W+=j@JY}q9
String header=con.getHeaderFieldKey(i); n{~&^Nby*I
if(header!=null) {jR3D!hK
//responseHeaders.put(header,httpConnection.getHeaderField(header)); jr.{M
Utility.log(header+" : "+con.getHeaderField(header)); d_&pxy?
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else o+{i26%
break; s 72yu}
} &FOq c
} /y4A?*w 6
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public void splitterStop() VyYrL]OrA
{ $6 Hf[(/ e
bStop = true; t.RDS2N|
} c2:,
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} lFcHE c
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/* l :u1P
**FileAccess.java IDqUiN
*//文件访问(定位,写) S5F5Tr;TN
package NetFox; {2 T:4i5
import java.io.*; F=*t]X[z}
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public class FileAccessI implements Serializable{ N.]~%)K:{
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//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 z(O*DwY#
RandomAccessFile oSavedFile; *0L3#. i
long nPos; `}uM91;
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public FileAccessI() throws IOException .8ikcs
{ ^!k_"C)B
this("",0); H=WB6~8)
} ?5lO1(
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public FileAccessI(String sName,long nPos) throws IOException ?*kB>U9e
{ Er$&}9G+-
oSavedFile = new RandomAccessFile(sName,"rw"); yLXIjR
this.nPos = nPos; Xq37:E2
oSavedFile.seek(nPos); /4+zT?f
} I~p*~mLh'
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public synchronized int write(byte[] b,int nStart,int nLen) n4XkhY|
{ s-x1<+E(
int n = -1; 1g,gilc
try{ 9PO5GYU
oSavedFile.write(b,nStart,nLen); jY/(kA]}
n = nLen; qQo*:3/];
} yU7XX+cB7
catch(IOException e) ND=JpVkvZ?
{ 'zMmJl}\vd
e.printStackTrace (); F/tRyq`D
} Wie0r@5E
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return n; gwg~4:W
} j1K~zG
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} 3&c'3y:b
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/* t)k;5B`> &
**SiteInfoBean.java egfd=z=2un
*/ 4PU@W o
package NetFox; D0S^Msk9L
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public class SiteInfoBean { "OkZ
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private String sSiteURL; //Site's URL "av/a
private String sFilePath; //Saved File's Path e9S*^2;
private String sFileName; //Saved File's Name \fUVWXv
private int nSplitter; //Count of Splited Downloading File ab)ckRC
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public SiteInfoBean() KlBT9"6"
{//nSplitter的缺省值为5 l#+@!2z
//default value of nSplitter is 5 |r+hj<K
this("","","",5); i \lr
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} l#>A.-R*`
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) Sv>CVp*
{ PIQd=%?'
sSiteURL= sURL; qla=LS\-A+
sFilePath = sPath; yC|odX#
sFileName = sName; w`#9Re
this.nSplitter = nSpiltter; UA0(
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} YVz,P_\(m
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public String getSSiteURL() (0?FZ.9%
{ 2U+Fat@
return sSiteURL; 'q8:1i9\[
} %/s+-j@s:
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public void setSSiteURL(String value) =3;!
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{ `VglE?M
sSiteURL = value; ?$/W3Xn0%
} w0<1=;_%
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public String getSFilePath() #Wv8+&n
{ uBM%E OE
return sFilePath; 4QNwu7TeR
} 4!'4 l=jO
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public void setSFilePath(String value) /" &Jf}r
{ \C1`F[d_
sFilePath = value; V`feUFw3
} a'my0m
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public String getSFileName() #_Lgo
{ 5'(#Sf
return sFileName; WO+>W+|N
} (|y@ftr@
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public void setSFileName(String value) DPl &e-`
{ _]+
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sFileName = value; *zX^Sg-[
} jH 9.N4L
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public int getNSplitter() bGp3V. H
{ 7zXX&