/* ,[T/O\k
**SiteFileFetch.java O) TS$
*/ $=Ns7Sbup
package NetFox; 6bc\
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import java.io.*; "OA{[)fw"
import java.net.*; !zm;C@}ln
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public class SiteFileFetch extends Thread { k0O5c[j
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SiteInfoBean siteInfoBean = null; //文件信息Bean }3 _b%{
long[] nStartPos; //开始位置 -ycdg'v
long[] nEndPos; //结束位置 <YtjE!2
FileSplitterFetch[] fileSplitterFetch; //子线程对象 Cc*R3vHM6
long nFileLength; //文件长度 \'<P~I&p
boolean bFirst = true; //是否第一次取文件 t$~'$kM)<
boolean bStop = false; //停止标志 /:Gy .
File tmpFile; //文件下载的临时信息 c|`$
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DataOutputStream output; //输出到文件的输出流 }IZw6KiN
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 9PACXW0
public SiteFileFetch(SiteInfoBean bean) throws IOException hd i0YL
{ lZ7
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siteInfoBean = bean; x{8h3.ZQ,
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 0MroHFh9`
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); uoOUgNwGg
if(tmpFile.exists ()) ^e <E/j{~
{ Vs{\ YfF
bFirst = false; s3nO"~tM
read_nPos(); [>r0
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} :b(W&iBWhI
else {:("oK6w
{ QRK\74'uY
nStartPos = new long[bean.getNSplitter()]; oQ,<Yx%E3
nEndPos = new long[bean.getNSplitter()]; v*qbzW`
} -aVC`
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} ~Gz9pBv1
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public void run() kE.4 #
{ TwI s_r:
//获得文件长度 #=S^i[K/
//分割文件 ;*t#:U*
//实例FileSplitterFetch -y$6gCRY
//启动FileSplitterFetch线程 ls&H oJ7
//等待子线程返回 {QylNC9
try{ 5qW>#pTFVV
if(bFirst) t"YsIOT:O"
{ !OY}`a(z
nFileLength = getFileSize(); tE{M
if(nFileLength == -1) e2NK7
{ v\4<6Z:4
System.err.println("File Length is not known!"); *9$SFe|&n:
} .,p=e$x]
else if(nFileLength == -2) #"rK1Z
{ ~=iH*AQR
System.err.println("File is not access!"); K)mQcB-"?
} h*C!b?:"
else )MK$E,W
{ Ze8.+Ee
for(int i=0;i<nStartPos.length;i++) x51R:x(p
{ oPr`SYB
nStartPos = (long)(i*(nFileLength/nStartPos.length)); t1o
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} Z:7eroZP
for(int i=0;i<nEndPos.length-1;i++) B+U:=591
{ WEe7\bWF
nEndPos = nStartPos[i+1]; 4F
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} o.A:29KoU
nEndPos[nEndPos.length-1] = nFileLength; SU4i'o
} ]#^v754X^T
} K&`1{,
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//启动子线程 4jC)"tch
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; )]FXUz|;
for(int i=0;i<nStartPos.length;i++) &`v?oN9$
{ UAhWJ$(C
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), kl.; E{PL
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ;]Q6K9.d8
nStartPos,nEndPos,i); bV&9>fC
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); bA#9'Qu^j
fileSplitterFetch.start(); 3MNM<Ih
} "W%YsN0
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), A|
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); wV==sV
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", C&H'?0Y@
nEndPos = " + nFileLength); Fy Ih\
// fileSplitterFetch[nPos.length-1].start(); wCNn/%C
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Y06^M?}
//等待子线程结束 {@)ZXg
//int count = 0; 4 O8ct,Y
//是否结束while循环 $$NWN?H~
boolean breakWhile = false; ~>u|7M$(
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while(!bStop) Uc {m##!
{ 8R3{YJ6@T
write_nPos(); xt?-X%oY8
Utility.sleep(500); .6C/,rQ?c
breakWhile = true; 3;BIwb_
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for(int i=0;i<nStartPos.length;i++) }-Mg&~e`
{ h>\C2Q
if(!fileSplitterFetch.bDownOver) P\ke%Jdpw?
{ /ki-Tha
breakWhile = false; pvyEs|f=%
break; oc( '!c
} WSH[*jMA
} FefroaJ:u
if(breakWhile) n>q!m@ }<
break; %T]^,y$n
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//count++; x5Lbe5/P
//if(count>4) *7h~0%WR
// siteStop(); b+|Jw\k
} @}d;-m~
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System.err.println("文件下载结束!"); YJ6~P
} W34xrm
catch(Exception e){e.printStackTrace ();} F1@Po1VTD
} kx;X:I(5&P
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//获得文件长度 -| m3=#
public long getFileSize() JK =A=
{ IHO*%3mA/
int nFileLength = -1; bLai@mL&a
try{ e`qrafa
URL url = new URL(siteInfoBean.getSSiteURL()); V'XEz;Ze
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Qi`3$<W>
httpConnection.setRequestProperty("User-Agent","NetFox"); Yn~fnI{
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int responseCode=httpConnection.getResponseCode(); 5 qfvHQ ~M
if(responseCode>=400) imYfRi=$
{ H<_Tn$<zH.
processErrorCode(responseCode); 3s!6rT_=)d
return -2; //-2 represent access is error ^~[7])}g6
} bu _ @>`S
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String sHeader; Qt+D ,X
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for(int i=1;;i++) -pYmM d,
{ Ea@0>_U|
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); _ Lh0
//Utility.log(in.readLine()); _C/|<Ot:
sHeader=httpConnection.getHeaderFieldKey(i); M?h{'$T
if(sHeader!=null) G7 UUx+ X
{ ['}|#3*w
if(sHeader.equals("Content-Length")) ML12&E>
{ |KYl'"5\
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); kzZgNv#G;
break; :.+w'SEn4M
} {:gx*4}q8
} HqWWWCWal
else Zmyq6.1q~
break; kS-BB[T
} I_ZJnu<
} :b44LXKCP
catch(IOException e){e.printStackTrace ();} l[T-Ak
catch(Exception e){e.printStackTrace ();} )4ek!G]Rb
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Utility.log(nFileLength); ^@V*:n^
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return nFileLength; Qf=^CQ=lV
} $vXY"-k
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//保存下载信息(文件指针位置) %HG+|)b
private void write_nPos() ,"`20.Lv
{ E D>7
try{ 5<(*
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output = new DataOutputStream(new FileOutputStream(tmpFile)); w PR Ns9^
output.writeInt(nStartPos.length); LLTr+@lj
for(int i=0;i<nStartPos.length;i++) QPf\lN/$4d
{ _;PQt" ]
// output.writeLong(nPos); W8 g13oAu"
output.writeLong(fileSplitterFetch.nStartPos); }'P|A
output.writeLong(fileSplitterFetch.nEndPos); uBww
} 4~Cf_`X}]
output.close(); Jq` Dvz
} G ky*EY
catch(IOException e){e.printStackTrace ();} m-O*t$6
catch(Exception e){e.printStackTrace ();} ,h^6y
} :(~<BiqR(
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//读取保存的下载信息(文件指针位置) P}Ig6^[m\
private void read_nPos() w]gLd
{ %DiQTg7V,
try{ i
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DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); EcHZmf
int nCount = input.readInt(); 4xW~@meNB
nStartPos = new long[nCount]; 2`]c&k;]
nEndPos = new long[nCount]; %.$!VTO"
for(int i=0;i<nStartPos.length;i++) uY~mi9E
{ /9ORVV
nStartPos = input.readLong(); IMD^(k 2
nEndPos = input.readLong(); ]&]G
} 961&rR}d
input.close(); zRjbEL
} oqwW
catch(IOException e){e.printStackTrace ();} !6|_`l>G,
catch(Exception e){e.printStackTrace ();} j4i$2ZT'
} OG<*&V
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private void processErrorCode(int nErrorCode) Q I";[
{ wBpt
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System.err.println("Error Code : " + nErrorCode); ia\Gmh
} %t&Lq }e
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//停止文件下载 rmw}Ui"
public void siteStop() 2Di~}* 9&
{ bsu?Q'q
bStop = true; e Fs5l
for(int i=0;i<nStartPos.length;i++) |5;,]lbt
fileSplitterFetch.splitterStop(); &G%AQpDW5
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} |h $Gs2
} *=@8t^fa86
//负责部分文件的抓取 l atm_\
**FileSplitterFetch.java
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*/
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package NetFox; G:b6Wf
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import java.io.*; ~W>{Dd(J_
import java.net.*; ~*EipxhstJ
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public class FileSplitterFetch extends Thread { Y_*KAr'{P
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String sURL; //File URL s8(Z&pQ
long nStartPos; //File Snippet Start Position <6]Hj2
long nEndPos; //File Snippet End Position \KJTR0EB:>
int nThreadID; //Thread's ID 6p;Pf9
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boolean bDownOver = false; //Downing is over 0*:n<T9
boolean bStop = false; //Stop identical h(q4
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FileAccessI fileAccessI = null; //File Access interface lg-`zV3
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ;t7F%cDA
{ WuVsW3@
this.sURL = sURL; v0WB.`rO
this.nStartPos = nStart; u@D5SkT
this.nEndPos = nEnd; X ([^i;mr
nThreadID = id; \t{4pobo
fileAccessI = new FileAccessI(sName,nStartPos);//定位 <EyJ $$
} d.ywH;
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public void run() O^c?w8
{ ;xTMOuI*
while(nStartPos < nEndPos && !bStop) 1;./e&%%
{ 5D3&E_S
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try{ q@1A2L\Om
URL url = new URL(sURL); .))k
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); M97+YMY)
httpConnection.setRequestProperty("User-Agent","NetFox"); 49/2E@G4.
String sProperty = "bytes="+nStartPos+"-"; aEQrBs
httpConnection.setRequestProperty("RANGE",sProperty); dG3?(}p+
Utility.log(sProperty); w2 (}pz:
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InputStream input = httpConnection.getInputStream(); U#Kw+slM
//logResponseHead(httpConnection); cJT_Qfxx
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byte[] b = new byte[1024]; 5Q}HLjG8Z
int nRead; !b K;/)
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) )jI4]6
{ .h
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nStartPos += fileAccessI.write(b,0,nRead); QncjSaEE
//if(nThreadID == 1) S%
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// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Y,n8co^
} *s1o?'e
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Utility.log("Thread " + nThreadID + " is over!"); |L;Hd.l7^*
bDownOver = true; fiAj#mX
//nPos = fileAccessI.write (b,0,nRead); K~&3etQF
} BR6HD7G
catch(Exception e){e.printStackTrace ();} WVyq$p/V
} ?fU{?nI}>p
} bMqS:+
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//打印回应的头信息 oPAc6ObOV~
public void logResponseHead(HttpURLConnection con) 5U_ar
{ `ER#S_}
for(int i=1;;i++) kyB>]2
{ kad$Fp39
String header=con.getHeaderFieldKey(i); "H=fWz5z
if(header!=null) VF-[O
//responseHeaders.put(header,httpConnection.getHeaderField(header)); ojWf]$^y}
Utility.log(header+" : "+con.getHeaderField(header)); ^*NOG\BK@
else A?ESjMy(R
break; ^SUo-N''
} IOrYm
} iee`Yg!EOH
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public void splitterStop() w@N)Pu
{ F0'o!A#|(
bStop = true; sGMnm
} gcM(K.n
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} Df$Yn
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/* Mm^6*L]
**FileAccess.java 1kc{`oL
*//文件访问(定位,写) n
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package NetFox; K!88 Nox(
import java.io.*; WdrMp
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public class FileAccessI implements Serializable{ \cAifU
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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 n{F&GE="
RandomAccessFile oSavedFile; 4,6?sTuX
long nPos; F.R0c@&W
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public FileAccessI() throws IOException tUFXx\p
{ "FfP&lF/
this("",0); o,
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} P$A'WEO'
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public FileAccessI(String sName,long nPos) throws IOException '^t(=02J
{ 2f0_Xw_V_
oSavedFile = new RandomAccessFile(sName,"rw"); "8yDqm
this.nPos = nPos; k*T&>$k}^
oSavedFile.seek(nPos); QTI^?@+N>
} Z5>}
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public synchronized int write(byte[] b,int nStart,int nLen) qB=%8$J
{ NEMC
int n = -1; W QyMM@#
try{ }Mh`j$
oSavedFile.write(b,nStart,nLen); *7/MeE6)i
n = nLen; A `=.F
} {$-\)K
catch(IOException e) _k5-Wd5Ypw
{ }D#[yE,=\
e.printStackTrace (); q}7(w$&
} fL R.2vJ
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return n; /\uW[mt
} |Q~5TL>b
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} Q92hI"
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/* ehYGw2
**SiteInfoBean.java []eZO_o6j
*/ _;5N@2?
package NetFox; r)t-_p37
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public class SiteInfoBean { 0\^K\J,.
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private String sSiteURL; //Site's URL $t$YdleIH
private String sFilePath; //Saved File's Path bG9$ &,
private String sFileName; //Saved File's Name B6a
private int nSplitter; //Count of Splited Downloading File |zSoA=7?
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public SiteInfoBean() AVv 8Hhd
{//nSplitter的缺省值为5 0Fm,F&12
//default value of nSplitter is 5 3P2L phW
this("","","",5); ;F'/[l{+
} ;*EPAC+
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) O_wRI\!
{ ZnYoh/
sSiteURL= sURL; ;;l-E>X0
sFilePath = sPath; |yow(2(F@
sFileName = sName; 0xg6
this.nSplitter = nSpiltter; e!~x-P5M`
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} %]i("21
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public String getSSiteURL() %7bZnK`C
{ LK[%}2me
return sSiteURL; X>y6-%@
} b}#ay2AR
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public void setSSiteURL(String value) :.M"M$MRp8
{ @z)_m!yV1
sSiteURL = value; ${%*O}$
} ~'l.g^p bv
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public String getSFilePath() !EQMTF=(
{ v(tr:[V
return sFilePath; h
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} C6C7*ks
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public void setSFilePath(String value) 7EAkY`Op
{ [8QE}TFic
sFilePath = value; pP6pn~}
} W=T}hA#`
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public String getSFileName() &