/* /xUTm=w7u
**SiteFileFetch.java ?>92OuG%W?
*/ b MZ-{<+i
package NetFox; ]4^9Tw6
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import java.io.*; ds}: t.3}6
import java.net.*; ]+u`E
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public class SiteFileFetch extends Thread { ^_0zO$z,
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SiteInfoBean siteInfoBean = null; //文件信息Bean Y@)/iwq
long[] nStartPos; //开始位置 }1kT0*'L
long[] nEndPos; //结束位置 VEj-%"\
FileSplitterFetch[] fileSplitterFetch; //子线程对象 b1>zGC^|
long nFileLength; //文件长度 *~YU0o
boolean bFirst = true; //是否第一次取文件 yU<T_&M
boolean bStop = false; //停止标志 ]q~_
File tmpFile; //文件下载的临时信息 G6]W'Kk
DataOutputStream output; //输出到文件的输出流 pN|BtrN{
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) :08b&myx
public SiteFileFetch(SiteInfoBean bean) throws IOException l|TiUjs
{ &Azfpv
siteInfoBean = bean; U.g7' `Z<
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Tk\?$n
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); C^oj/}^
if(tmpFile.exists ()) v50w}w'
{ <Ih)h$8`
bFirst = false; r{R879
read_nPos(); )(V|d$n
} .dM4B'OA?
else rWsUWA T*
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nStartPos = new long[bean.getNSplitter()]; j
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nEndPos = new long[bean.getNSplitter()]; &m<:&h& b
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} 3msb"|DG
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public void run() <vS3[(
{ c"F3[mrff
//获得文件长度 '&v.h#<
//分割文件 m/TjXA8_
//实例FileSplitterFetch e x"E50
//启动FileSplitterFetch线程 L{PH8Xl_
//等待子线程返回 IP<]a5
try{ dA4DW
if(bFirst) p6P .I8g
{ Dfz3\|LJ
nFileLength = getFileSize(); /<zBjvr%%
if(nFileLength == -1) eI99itDQ
{ Q1hHK'3w
System.err.println("File Length is not known!"); iR(=<>
} <KB V
else if(nFileLength == -2) wN}@%D-[v
{ lJlyfN
System.err.println("File is not access!"); X0\O3l*j
} LKC^Y)6o
else $?`-} wY
{ q%&JAX=
for(int i=0;i<nStartPos.length;i++) 'tyblj C
{ d-k`DJ!
nStartPos = (long)(i*(nFileLength/nStartPos.length)); 9feVy\u
} QT`|"RI%
for(int i=0;i<nEndPos.length-1;i++)
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{ 7# !RX3
nEndPos = nStartPos[i+1]; *m$lAWB5D
} nLvF^%P8
nEndPos[nEndPos.length-1] = nFileLength; I!-"SuBy4J
} OQ*BPmS-
} EjY8g@M;t
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//启动子线程 >G#SfE$0
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; WlJ=X$
for(int i=0;i<nStartPos.length;i++) n VNz5B
{ ."X}A
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), xOY
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), d1]1bN4`"0
nStartPos,nEndPos,i); mc
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Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); p<[gzmU9\b
fileSplitterFetch.start(); E^K<b7
} \mo NpKf
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), B
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); (D5sJ$&E@\
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", cVb&Jzd
nEndPos = " + nFileLength); b aO^Z
// fileSplitterFetch[nPos.length-1].start(); a%g |E'\Jw
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//等待子线程结束 b@s6jNhVO^
//int count = 0; ./l^Iz&0
//是否结束while循环 v^0*{7N'
boolean breakWhile = false; =%=lq0GF0
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while(!bStop) Sdo mG?;kV
{ fex<9'e
write_nPos(); > a?K![R
Utility.sleep(500); y]U]b G{
breakWhile = true; _A/q bm
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for(int i=0;i<nStartPos.length;i++) 3u,C I!
{ _ J t
if(!fileSplitterFetch.bDownOver) {r>iUgg
{ P$7i>(?(
breakWhile = false; )hy(0 D
break; ye^*Z>|
} d!P3<:+R[
} 7ciSIJ
if(breakWhile) ;}>g/lw
break; wJAJ /
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//count++; o)]mJb~XG-
//if(count>4) RW4,j&)
// siteStop();
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} G(;hJ'LT
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System.err.println("文件下载结束!"); BN>t"9XpW
} ABaK60.O[O
catch(Exception e){e.printStackTrace ();} f`W)Z$fN5
} CM`B0[B
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//获得文件长度 \9!hg(-F
public long getFileSize() - _?U/k(Hi
{ x>!bvZ2
int nFileLength = -1; '>:c:Tewy
try{ S.,5vI"s,
URL url = new URL(siteInfoBean.getSSiteURL()); DQI
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); oniVC',
httpConnection.setRequestProperty("User-Agent","NetFox"); Jk=_8Xvr`
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int responseCode=httpConnection.getResponseCode(); A)%!9i)
if(responseCode>=400) MBn ZO
{ GoUsB|-\
processErrorCode(responseCode); q@=3`yQ
return -2; //-2 represent access is error e0:[,aF`
} %o
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String sHeader; +ktubJ@Qgj
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for(int i=1;;i++) nh'TyUd!
{ \=&F\EV
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); :B7dxE9[r
//Utility.log(in.readLine()); L/c`t7
sHeader=httpConnection.getHeaderFieldKey(i); /6{P
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if(sHeader!=null) vq` M]1]FO
{ +(U;+6 b
if(sHeader.equals("Content-Length")) csjCXT=Ve
{ <N(r-
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); >[0t@Tu,D
break; *8Kx y@
} b!4Z~d0=
} f2iA5 rCV]
else }h+{>{2j
break; 7!g"q\s
} K0fuN)C
} 1:;S6{oQ
catch(IOException e){e.printStackTrace ();} 1smKU9B2)
catch(Exception e){e.printStackTrace ();} BVzMgn;
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Utility.log(nFileLength); jB"IJ$cD
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return nFileLength; (yK@(euG
} t2LX@Q"
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//保存下载信息(文件指针位置) g#%Egb1
private void write_nPos() 4DgH/Yo
{ ]%2y`Jrl^W
try{ 6]|-%
output = new DataOutputStream(new FileOutputStream(tmpFile)); VOSq%hB
output.writeInt(nStartPos.length); z 4qEC
for(int i=0;i<nStartPos.length;i++) uGpLh0
{ 8 RA
// output.writeLong(nPos); Q2 Dh(
output.writeLong(fileSplitterFetch.nStartPos); _$KEE|9
output.writeLong(fileSplitterFetch.nEndPos); nrV!<nNBk
} "F:V$,mJ
output.close(); 1| dXbyUd
} |)*9BN
catch(IOException e){e.printStackTrace ();} {,B.OM)J
catch(Exception e){e.printStackTrace ();} Wud-(19
} ^{Fo,7
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//读取保存的下载信息(文件指针位置) : G'a"%x
private void read_nPos() LeV";=_n
{ 7/zaf
try{ @TJ2
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DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 8?N![D\@
int nCount = input.readInt(); QlMv_|`9
nStartPos = new long[nCount]; K=1prv2
nEndPos = new long[nCount]; s`en8%
for(int i=0;i<nStartPos.length;i++) ]E$bK
{ >rXD Lj-e
nStartPos = input.readLong(); 7.kgQ"?&
nEndPos = input.readLong(); H X{K5 +
} N
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input.close(); ?vP6~$*B
} "*LQr~k~}
catch(IOException e){e.printStackTrace ();} y!c<P,Lt3f
catch(Exception e){e.printStackTrace ();} '#a;n
} &$heW,
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private void processErrorCode(int nErrorCode) q"i]&dMr
{ VCzb[.
System.err.println("Error Code : " + nErrorCode); G
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} ++ZP
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//停止文件下载 XS$#\UQ
public void siteStop() y~'%PUN
{ >8|V[-H
bStop = true; D63?f\
for(int i=0;i<nStartPos.length;i++) \M;cF"e-S
fileSplitterFetch.splitterStop(); qpjiQ,\:b
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} WmOu#5*;
} D?FmlDTr[
//负责部分文件的抓取 pVM1%n:#
**FileSplitterFetch.java *v$j n
*/ ?pWda<&
package NetFox; N/eus"O;
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import java.io.*; `!xI!Y\
import java.net.*; 1)3'Y2N*
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public class FileSplitterFetch extends Thread { .kTOG'K\e
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String sURL; //File URL ;9<?~S
long nStartPos; //File Snippet Start Position ,$Cr9R&/
long nEndPos; //File Snippet End Position <'4 8mip
int nThreadID; //Thread's ID YU XxQ|
boolean bDownOver = false; //Downing is over x*p'm[Tdtm
boolean bStop = false; //Stop identical N2 t`
FileAccessI fileAccessI = null; //File Access interface SmAii}-jf
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 2FY]o~@
{ u2IU/z8
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this.sURL = sURL; {Iz"]Wh<f
this.nStartPos = nStart; DyCkz"1S
this.nEndPos = nEnd; O^q~dda
nThreadID = id; T*g}^TEh
fileAccessI = new FileAccessI(sName,nStartPos);//定位 $Wjx$fD
} ] &SmeTe
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public void run() 3a&HW
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{ [{>3"XJ'
while(nStartPos < nEndPos && !bStop) FOteNQTj
{ \t%iUZ$
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try{ 1,7
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URL url = new URL(sURL); 7'gk=MQc
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); I%b5a`7
httpConnection.setRequestProperty("User-Agent","NetFox"); MdFFt:y:
String sProperty = "bytes="+nStartPos+"-"; b`JS&E
httpConnection.setRequestProperty("RANGE",sProperty); <g&.U W4
Utility.log(sProperty); ,g4T>7`&U%
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InputStream input = httpConnection.getInputStream(); [E+J=L.l
//logResponseHead(httpConnection); =q>lP+
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byte[] b = new byte[1024]; }57Jn5&'
int nRead; b|*+!v:I>T
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) ArScJ\/Nwv
{ HCx0'|J
nStartPos += fileAccessI.write(b,0,nRead); C$$Zwgy
//if(nThreadID == 1) bc NyB$S
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); \qTp#sF
} ^y%8_r&
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Utility.log("Thread " + nThreadID + " is over!"); ?]aVRmL
bDownOver = true; 8hYl73#
//nPos = fileAccessI.write (b,0,nRead); Gm &jlN
} O.Y|},F
catch(Exception e){e.printStackTrace ();} r;{ggwY&J
} $Ld-lQsL
} 2
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//打印回应的头信息 cm!|A?-<
public void logResponseHead(HttpURLConnection con) !? H:?
{ !1K.HdK
for(int i=1;;i++) NJmx(!Xsh
{ @$Yk#N;&(
String header=con.getHeaderFieldKey(i); {NcJL< ;tS
if(header!=null) L,!\PV|
//responseHeaders.put(header,httpConnection.getHeaderField(header)); Dm$SW<!l|
Utility.log(header+" : "+con.getHeaderField(header)); 4.Fh4Y:$'
else um%s9
break; mY[*Cj3WJ
} 66sgs16k
} t~)4f.F:
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public void splitterStop() f,|;eF-Z
{ Y^C(<N$
bStop = true; 2
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} Y]Z&
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} wkx #WC
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/* Z[l+{
**FileAccess.java c}|} o^
*//文件访问(定位,写) .3jijc j
package NetFox; >o%X;U
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import java.io.*; vbX.0f "n
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public class FileAccessI implements Serializable{ TaaCl#g$?
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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 '4D7:
RandomAccessFile oSavedFile; IwS<p-
long nPos; h?h)i>
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public FileAccessI() throws IOException tk:nth
{ M= |is*t
this("",0); `c|H^*RC
} Z0O0Q =e\Y
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public FileAccessI(String sName,long nPos) throws IOException O*lIZ,!n
{ <AiE~l| D
oSavedFile = new RandomAccessFile(sName,"rw"); 68w~I7D>
this.nPos = nPos; [6
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oSavedFile.seek(nPos); HRQfT>"/
} 1(*+_TvZ
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public synchronized int write(byte[] b,int nStart,int nLen) t/%[U,m
{ tUW^dGo.
int n = -1; 6i~<,;Cn
try{ UUM:*X
oSavedFile.write(b,nStart,nLen); ydRS\l
n = nLen; !,{N>{I
} Oiqc]4TL
catch(IOException e) H#WqO<<v
{ X+HPdrT
e.printStackTrace (); 6' \M:'<0e
} wuxOFlrg
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return n; 7l09
} {zc*yV\
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} x_/l,4_
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/* nB[B
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**SiteInfoBean.java 0S
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*/ 4PR&67|AH_
package NetFox; V?>&9D"m
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public class SiteInfoBean { N6T
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private String sSiteURL; //Site's URL C43I(.2g
private String sFilePath; //Saved File's Path Oml /;p
private String sFileName; //Saved File's Name kp!(e0n
private int nSplitter; //Count of Splited Downloading File m]'+Eye ]r
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public SiteInfoBean() E@l@f
{//nSplitter的缺省值为5 2#CN:b]+
//default value of nSplitter is 5 s0h0EpED
this("","","",5); Sht3\cJ8
} G=CP17&h6
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) -]YsiE?r
{ Nr"GxezU+A
sSiteURL= sURL; 0C"2?etMx
sFilePath = sPath; 7|[Dr@.S
sFileName = sName; C\;%IGn
this.nSplitter = nSpiltter; }N,v&B
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} Z^J)]UL/
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public String getSSiteURL() xk,1D
{ RUut7[r
return sSiteURL; p_fsEY
} LJ 9#!r@H
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public void setSSiteURL(String value) OMab!
{ V,\}|_GY
sSiteURL = value; .#K\u![@N
} <~svy)Cz
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public String getSFilePath() Lm0q/d2|\X
{ us<dw@P7{
return sFilePath; Y9%zo~]-W'
} c"Q9ob
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public void setSFilePath(String value) V.yDZ"
{ nn">
sFilePath = value; `Cy;/95m
} jCg4$),b
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public String getSFileName() D6\k}4n-
{ )sK_k
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return sFileName; Np.<&`p!
} &s\/Uq
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public void setSFileName(String value) y>r^ MQ
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sFileName = value; I=YZ!* f/`
} $UdFm8&
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public int getNSplitter() fnFIw=d
{ <#T#+uO
return nSplitter; aLQ]2m
} sE^=]N
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public void setNSplitter(int nCount)
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{ lXnv(3j3*s
nSplitter = nCount; Vr T0S
} Eqx |k-<a
} Z22#lF\ N
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/* i[vOpg]J
**Utility.java Dd)L~`k{)
*/ o4aFgal1
package NetFox; _o>?\ :A
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public class Utility { d! _8+~
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public Utility() y"w`yl{_
{ jF{\=&fU
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