/* 4$);x/
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**SiteFileFetch.java WUwH W
*/ g ni=S~u
package NetFox; "0Wi-52=V
import java.io.*; ! z^%$;p
import java.net.*; vdn`PS'#
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public class SiteFileFetch extends Thread { FUVoKX!#
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SiteInfoBean siteInfoBean = null; //文件信息Bean #Sxk[[KwH*
long[] nStartPos; //开始位置 cjf 8N:4N0
long[] nEndPos; //结束位置 i'w8Li
FileSplitterFetch[] fileSplitterFetch; //子线程对象 .^aakM
long nFileLength; //文件长度 MM}lW-q;
boolean bFirst = true; //是否第一次取文件 *&f^R}O
boolean bStop = false; //停止标志 t<)Cbple\
File tmpFile; //文件下载的临时信息 L\cd=&b`
DataOutputStream output; //输出到文件的输出流 T<hS
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 'MM%Sm,
public SiteFileFetch(SiteInfoBean bean) throws IOException 81gcM?
{ O_zW/#
siteInfoBean = bean; LW={| 3}
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); P=.yXirm?
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); mv5=>Xc6
if(tmpFile.exists ()) +VJS/
{ ! :[`>=!
bFirst = false; :bh#,]'
read_nPos(); J**-q(>
} ;_o1{?~
else @%(Vi!Cv"R
{ SdOa#U)
nStartPos = new long[bean.getNSplitter()]; )\
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nEndPos = new long[bean.getNSplitter()]; zTgY=fuz
} j20/Q)=h
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} |WiE`&?xP
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public void run() 1JRM@ !x
{ 1V\tKDM
//获得文件长度 )\S3Q
//分割文件 o!]muO*Rm
//实例FileSplitterFetch QKW\z aG
//启动FileSplitterFetch线程 5r&bk`
//等待子线程返回 bW]7$?acv
try{ HE;}B!>
if(bFirst) iyA=d{S;V
{ ~XzT~WxW
nFileLength = getFileSize(); L}~"R/iWCT
if(nFileLength == -1) $?_/`S13
{ rr@h9bak;g
System.err.println("File Length is not known!"); @U8}K#
} M id v
else if(nFileLength == -2) jR1o<]?
{ J0ysZ]
System.err.println("File is not access!"); q,i&%
} b< dwf[
else ', WnT:
{ "QKCZ8_C
for(int i=0;i<nStartPos.length;i++) og`rsl
{ &$$o=Y g,
nStartPos = (long)(i*(nFileLength/nStartPos.length)); GI se|[p
} AiP#wK;
for(int i=0;i<nEndPos.length-1;i++) ]u]BxMs
{ t5| }0ID-
nEndPos = nStartPos[i+1]; S/itK3
} - w{`/
nEndPos[nEndPos.length-1] = nFileLength; y*G3dWb
} UmR\2
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} `rLcJcW
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//启动子线程 1fK]A*{p
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 43VBx<"
for(int i=0;i<nStartPos.length;i++) NJNS8\4
{ @A5'vf|2;.
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), AV>_bw.
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ){nOM$W
nStartPos,nEndPos,i); ^xyU*A}D
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); afw`Heaa2(
fileSplitterFetch.start(); `WUyffS/!
} &<=?O
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// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), wit
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); HBdZE7.x)3
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", CN{xh=2qY[
nEndPos = " + nFileLength); d-sT+4o}
// fileSplitterFetch[nPos.length-1].start(); Q$yMU[l)
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//等待子线程结束 _qxBjB4t"a
//int count = 0; 2q
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//是否结束while循环 [.(,vn?6
boolean breakWhile = false; 33=lR-N#
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while(!bStop) k-Z:z?M
{ :MP*Xy\7&J
write_nPos(); w+wg)$i
Utility.sleep(500); b9xvLR8
breakWhile = true; l(y,lK=YP1
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for(int i=0;i<nStartPos.length;i++) 9Q.@RO$%C
{ )n&6= Li
if(!fileSplitterFetch.bDownOver) M!/!*,~
{ g5C$#<28
breakWhile = false; 5|jsv)M+
break; cBD#F$K2
} =h@t#-Z"
} 7BS5Eq B=
if(breakWhile) `53S[8
break; :5X^t
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//count++; kz*6%Cg*~
//if(count>4) f<{f/lU@
// siteStop(); 2oF1do;
} Z[9t?ePL
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System.err.println("文件下载结束!");
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} I7#^'/
catch(Exception e){e.printStackTrace ();} 3xz|d`A
} *EwDwS$$
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//获得文件长度 zIA)se
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public long getFileSize() 9/`3=r@
{ *iN5/w{VG
int nFileLength = -1; &qzy?/i8
try{ Y?qUO2
URL url = new URL(siteInfoBean.getSSiteURL()); @#p6C
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); #tIeI6Qw
httpConnection.setRequestProperty("User-Agent","NetFox"); D#D55X^6*
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int responseCode=httpConnection.getResponseCode(); %L|xmx!c
if(responseCode>=400) 6)PnzeYW
{ vqAEF^HYry
processErrorCode(responseCode); ;X
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return -2; //-2 represent access is error PfsUe,*
} @6
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String sHeader; )<f4F!?,A
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for(int i=1;;i++) lNsdbyV'
{ Qr_0
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); e"%uOuIYX
//Utility.log(in.readLine()); oj[~H}>
sHeader=httpConnection.getHeaderFieldKey(i); =A*a9c2
if(sHeader!=null) N^M6*,F,J
{ 1%C EUE
if(sHeader.equals("Content-Length")) 1cc~UQ
{ id9 XwWV
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); Na4O( d`
break; }H<Z`3_U%
} '1rGsfp6In
} E4'z
else (<
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break; jz~#K;3=,
} ORM3oucP
} ~"_!O+Pj
catch(IOException e){e.printStackTrace ();} #].qjOj
catch(Exception e){e.printStackTrace ();} .^2.h
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Utility.log(nFileLength); %{7*o5`
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return nFileLength; 3 l}9'j
} ~;z]
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//保存下载信息(文件指针位置) bIlNA )g
private void write_nPos() vcCNxIzEG
{ B9Mp3[
try{ d>NO}MR
output = new DataOutputStream(new FileOutputStream(tmpFile)); d&AO4^
output.writeInt(nStartPos.length); sv&^sARN
for(int i=0;i<nStartPos.length;i++) y@,PTF
{ q7rb3d
// output.writeLong(nPos); Td|u-9OM
output.writeLong(fileSplitterFetch.nStartPos); Cn{v\Q~.4
output.writeLong(fileSplitterFetch.nEndPos); ?0M$p
} }30Sb&"
output.close(); +0)M1!gK
} 9Zj3 "v+b
catch(IOException e){e.printStackTrace ();} |h%HUau
catch(Exception e){e.printStackTrace ();} eXD~L&s[
} 7W*a+^
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//读取保存的下载信息(文件指针位置) :nR80]
private void read_nPos() @/?i|!6
{ b`$qKO
try{ B'Jf&v
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 4:S]n19nq
int nCount = input.readInt(); &ds+9A
nStartPos = new long[nCount]; 2 S~( P
nEndPos = new long[nCount]; `d^Q!QxE
for(int i=0;i<nStartPos.length;i++) |5%T)
{ !H@HgJ
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nStartPos = input.readLong(); =+UtAf<n
nEndPos = input.readLong(); `"}).{N]C
} /t`,7y3T
input.close(); sp:4b$zX
} k\qFWFR
catch(IOException e){e.printStackTrace ();} 6Q\|8a
catch(Exception e){e.printStackTrace ();} F\&{ >&
} MUsF
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private void processErrorCode(int nErrorCode) Woj5
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{ [|YvVA
System.err.println("Error Code : " + nErrorCode); SD :D8"8
} :.-z!
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//停止文件下载 zwU[!i)
public void siteStop() W7'<Jom|?
{ ']>9/r#
bStop = true; 8B &EH+
for(int i=0;i<nStartPos.length;i++) 99`w'Nlk
fileSplitterFetch.splitterStop(); [U",yN]d
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} J _dgP[
} {J
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//负责部分文件的抓取 {| hg3R~A
**FileSplitterFetch.java ~##FW|N)
*/ h@NC#Iod
package NetFox; |hw.nY]J
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import java.io.*; GC7 WRA
import java.net.*; qzJ<9H
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public class FileSplitterFetch extends Thread { zG<<MR/<
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String sURL; //File URL ohqThl
long nStartPos; //File Snippet Start Position $l"%o9ICG
long nEndPos; //File Snippet End Position =?0v,;F9|
int nThreadID; //Thread's ID !L9OJ1F
boolean bDownOver = false; //Downing is over R'`'q1=R
boolean bStop = false; //Stop identical {pH# zs4Y
FileAccessI fileAccessI = null; //File Access interface qe#5;#
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ZSK_Lux>
{ RG'76?z
this.sURL = sURL; (m,H 5
this.nStartPos = nStart; [
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this.nEndPos = nEnd; Nj3iZD|
nThreadID = id; u%e~a]
fileAccessI = new FileAccessI(sName,nStartPos);//定位 Pb>/b\&JS
} YLQ0UeDN'
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public void run() .!KsF
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{ KzO"$+M
while(nStartPos < nEndPos && !bStop) YwET.(oo
{ Uzzm2OS`
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try{ F/BR#J1
URL url = new URL(sURL); {CI4AT!?W
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); $'3xl2T
httpConnection.setRequestProperty("User-Agent","NetFox"); u-,}ug|
String sProperty = "bytes="+nStartPos+"-"; lTqlQ<`V
httpConnection.setRequestProperty("RANGE",sProperty); D)ri_w!Q
Utility.log(sProperty); U< Xdhgo?
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InputStream input = httpConnection.getInputStream(); ]/1\.<uJId
//logResponseHead(httpConnection); .>F4s_6l
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byte[] b = new byte[1024]; 3._
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int nRead; s2G9}i{
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) N$]er'`
{ LZe)_9$
nStartPos += fileAccessI.write(b,0,nRead); Na/Y1RW
//if(nThreadID == 1) sd\p[MXX
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); q/U-6A[0
} $xZ ~bE9
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Utility.log("Thread " + nThreadID + " is over!"); ? /z[Jx.
bDownOver = true; vHpw?(]
//nPos = fileAccessI.write (b,0,nRead); (?\+
} `T[@ -
catch(Exception e){e.printStackTrace ();} i>YQ<A1
} K#wA ;
} R>"Fc/{y
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//打印回应的头信息 (8h4\utA
public void logResponseHead(HttpURLConnection con) c]ARgrH-
{ g) u%?T
for(int i=1;;i++) Vz/w.%_g
{ _=s9o/Cn]
String header=con.getHeaderFieldKey(i); -Y/i
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if(header!=null) O+=%Mz(l
//responseHeaders.put(header,httpConnection.getHeaderField(header)); ]q%r2 (y,k
Utility.log(header+" : "+con.getHeaderField(header)); U*$P"sS`
else xrg?{*\
break; Y)X7*iTi'j
} E@ U]k$M
} B{j><uxl
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public void splitterStop() [UzD3VPg
{ <@-O06
bStop = true; 8O,\8:I#
} Yao}Xo9}
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} 4$&l`yWU+
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/* Kk8}m;
**FileAccess.java ~U&NY7.@
*//文件访问(定位,写) AYA{_^#+3
package NetFox; ,D+ydr
import java.io.*; !lgL=Ys(
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public class FileAccessI implements Serializable{ }~I!'J#)
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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 z5fE<=<X_W
RandomAccessFile oSavedFile; njy2pDC@
long nPos; :jl*Y-mM
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public FileAccessI() throws IOException 2H|:/y
{ /e '3\,2_
this("",0); .c"nDCFVR
} ^}=)jLS
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public FileAccessI(String sName,long nPos) throws IOException 2nB99L{6
{ e,p"=/!aY
oSavedFile = new RandomAccessFile(sName,"rw"); ^&eF916H
this.nPos = nPos; ,@ 8+%KqG
oSavedFile.seek(nPos); SN{+ P k
} iNA3Y
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public synchronized int write(byte[] b,int nStart,int nLen) V*4Z.3/E5
{ &F&`y
int n = -1; Ht
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try{ uDDa>Ka#+
oSavedFile.write(b,nStart,nLen); te+} j7SU
n = nLen; x4'@U<
} 7s|'NTp
catch(IOException e) I@'[> t
{ g<:Lcg"u
e.printStackTrace (); JY0aE
} >H;i#!9,
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return n; h&<"jCjL
} $xbC^ k
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} NfgXOLthM
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/* ob.<j
**SiteInfoBean.java Bs~~C8+
*/ n1f8jS+'}
package NetFox; ]" 'yf;g
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public class SiteInfoBean { -N45ni87
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private String sSiteURL; //Site's URL E`IXBI
private String sFilePath; //Saved File's Path Vm[Rp,"
private String sFileName; //Saved File's Name cbzA`b'Mg
private int nSplitter; //Count of Splited Downloading File N"S`9B1eD(
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public SiteInfoBean() uBm"Xkxe|w
{//nSplitter的缺省值为5 f@OH~4FG
//default value of nSplitter is 5 o7) y~ ke
this("","","",5); )(}[S:`
} -H-U8/W C
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) ;sB=f
{ Th)
sSiteURL= sURL; 5
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sFilePath = sPath; DSrU7#
sFileName = sName; *QC6zJ
this.nSplitter = nSpiltter; 7~h3B<
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public String getSSiteURL() 02J/=AC5
{ S,&LH-ps
return sSiteURL; ;wv[';J
} )@g[aRFa
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public void setSSiteURL(String value) MP%#)O6
{ 'n &p5%
sSiteURL = value; ?WI v4
} m eF7[>!U
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public String getSFilePath() V._-iw]v
{ =M\yh,s!
return sFilePath; bxXpw&
} GkAd"<B
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public void setSFilePath(String value) UTA|Ps$
{ k[Em~>m
sFilePath = value; H=/1d.p
} ]iV]7g8:
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public String getSFileName() `G\
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{ N*IroT3
return sFileName; ti5fsc
} 4 9qa
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public void setSFileName(String value) t[|oSF#i
{ }z]d]
sFileName = value; UF9={fN1
} A c_P^
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public int getNSplitter() $(1t~u<17
{ )~'UJPK
return nSplitter; :5kDc"
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} !?,,
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public void setNSplitter(int nCount) Kw fd
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{ }&v}S6T
nSplitter = nCount; L$ T2 bul
} ,EQ0""G!
} rZUTBLZ`j
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/* x?i
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**Utility.java %JeNDXbI4
*/ !'$*Z(
package NetFox; frcAXh9
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public class Utility { cW3'057
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public Utility() igu1s}F
{ {4+/0\
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} g~<[;6&