/* -<5H8P-
**SiteFileFetch.java B 3eNvUFZg
*/ L_AQS9a^D
package NetFox; y|%lw%cSe
import java.io.*; 5dLb`Gf
import java.net.*; Lw{'mtm
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public class SiteFileFetch extends Thread { {"^#CSi
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SiteInfoBean siteInfoBean = null; //文件信息Bean 7=4V1FS6i
long[] nStartPos; //开始位置 ld'Aaxl&
long[] nEndPos; //结束位置 c6HH%|
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ;7yt,b5&C
long nFileLength; //文件长度 B=2f-o
boolean bFirst = true; //是否第一次取文件 +'D
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boolean bStop = false; //停止标志 Y.o-e)zX
File tmpFile; //文件下载的临时信息 ptpu
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DataOutputStream output; //输出到文件的输出流 }x:nhy`
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) _lG\_6oJ,
public SiteFileFetch(SiteInfoBean bean) throws IOException N Z~"2~Hh
{ #]Q.B\\
siteInfoBean = bean; v&u8Ks
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); =A^VzIj(
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 0Yc#fD
if(tmpFile.exists ()) 6H!"oC&
{ ]m""ga
bFirst = false;
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read_nPos(); @RS|}M^4
} CA ,0Fe3
else $g)X,iQu
{ qgsKbsl
nStartPos = new long[bean.getNSplitter()]; 4N{^niq7
nEndPos = new long[bean.getNSplitter()]; Z+x`q#ZQr
} .Ue1}'v*,
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} 8Vqh1<
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public void run() XDq*nA8#5B
{ l050n9#9p
//获得文件长度 $Z^HI
//分割文件 *.Ceb%W7C
//实例FileSplitterFetch T>s3s5Y
//启动FileSplitterFetch线程 JIU=^6^2'
//等待子线程返回 c*x5t"{
try{ )~[hf,R5S
if(bFirst) (SYSw%v$A
{ <f`G@
nFileLength = getFileSize(); -AxO1
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if(nFileLength == -1) ~m.@{Do0p
{ <lwkjt=RV
System.err.println("File Length is not known!"); E14Dq#L
} ~uz 4
else if(nFileLength == -2) 2:l8RH!Y
{ RgT|^|ZA
System.err.println("File is not access!"); )]5}d$83
} [D%5Fh\0
else uVw|fT
{ -?68%[4lm_
for(int i=0;i<nStartPos.length;i++) o@KK/f
{ QGQ>shIeZ
nStartPos = (long)(i*(nFileLength/nStartPos.length)); |Ptv)D
} [.NG~ cpb
for(int i=0;i<nEndPos.length-1;i++) [Dq!t1
{ Qtpw0t"
nEndPos = nStartPos[i+1]; DZ Q=Sinry
} myeez+@ m
nEndPos[nEndPos.length-1] = nFileLength; Th)Z?\8zk
} 7B,axkr
} &udlt//^%
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//启动子线程 \P|PAU@,
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; G\1\L*+0
for(int i=0;i<nStartPos.length;i++) B#K{Y$!v
{ u:f.g?!`"
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 7U\GX
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), "?UBW5nM#
nStartPos,nEndPos,i); &z(E-w/S
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); L^0s
fileSplitterFetch.start(); [~<X|_LG
} U6@Hgi>
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), B#T4m]E/
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 9I;d>%
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ]hL`HP
nEndPos = " + nFileLength); t$lO~~atr
// fileSplitterFetch[nPos.length-1].start(); e$3{URg
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//等待子线程结束 @Js^=G2
//int count = 0; af<R.
//是否结束while循环 (/r l\I
boolean breakWhile = false; lU[" ZFP
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while(!bStop) RHc-kggk!
{ +(-L
write_nPos(); ZCAdCKX|
Utility.sleep(500); d/O~"d
breakWhile = true; YxUC.2V|7$
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for(int i=0;i<nStartPos.length;i++) OIMsxXF\J
{ 1]i{b/ 4
if(!fileSplitterFetch.bDownOver) O:Ixy?b;Z
{ nM1F4G
breakWhile = false; `"/s," c:D
break; *+ql{\am4N
} #Jo#[-r
} uoM;p'
if(breakWhile) ;ctJ9"_g
break; 1webk;IM
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+ S^OzCGk
//count++; 0 xUw}T6
//if(count>4) O#g'4 S
// siteStop(); ebSG|F
} TM1isZ
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System.err.println("文件下载结束!"); 1'[RrJ$Q
} vjcG
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catch(Exception e){e.printStackTrace ();} bV5 {
} Cz%tk}2
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//获得文件长度 GxL;@%B
public long getFileSize() R; wq
{ *oC],4y~D
int nFileLength = -1; jo8hVWJ7V*
try{ 'Olp2g8=
URL url = new URL(siteInfoBean.getSSiteURL()); xpWx6
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); X2?
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httpConnection.setRequestProperty("User-Agent","NetFox"); ZH:-.2*cj
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int responseCode=httpConnection.getResponseCode(); $?.0>0,<
if(responseCode>=400) yM*-em
{ @%7IZg;P6
processErrorCode(responseCode); H\Y5Fd9)
return -2; //-2 represent access is error ?*36&Iq}
} ^u?#fLr
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String sHeader; 4&}V3"lg
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for(int i=1;;i++) ''{REFjK7
{ vr,8i7*0
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); [z2XK4\e1T
//Utility.log(in.readLine()); Xu4C*]A>
sHeader=httpConnection.getHeaderFieldKey(i); g>m)|o'
if(sHeader!=null) B}PT-S1l
{ "$->nC.
if(sHeader.equals("Content-Length")) wxa?.
{ u3"0K['3
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ?s=O6D&
break; 0Jz5i4B
} *Kpk1
} 7,MDFO{n
else [g bYIwL.
break; w1aev
} F;4*,Ap
} 6zo'w Wc3
catch(IOException e){e.printStackTrace ();} ,g.*Mx`-
catch(Exception e){e.printStackTrace ();} 'pCZx9*c
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Utility.log(nFileLength); {XHAQ9'
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return nFileLength; UlG8c~p
} =cwQG&as
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//保存下载信息(文件指针位置) y /$Q5P+o
private void write_nPos() y&ZyThqg
{ B3+9G,or
try{ [y(DtOR
output = new DataOutputStream(new FileOutputStream(tmpFile)); Q]JWWKt6rV
output.writeInt(nStartPos.length); aG"j9A~ &
for(int i=0;i<nStartPos.length;i++) z%)~s/2Rs
{ 1JRM@ !x
// output.writeLong(nPos); 1V\tKDM
output.writeLong(fileSplitterFetch.nStartPos); )\S3Q
output.writeLong(fileSplitterFetch.nEndPos); o!]muO*Rm
} Jy#c 6
output.close(); dRdI('
} bW]7$?acv
catch(IOException e){e.printStackTrace ();} ?QDHEC62
catch(Exception e){e.printStackTrace ();} y*F !k{P
} wbIgZ]o!/;
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//读取保存的下载信息(文件指针位置) <r9L-4
private void read_nPos() '|I8byiK
{ xRX2u_f$<
try{ %^bHQB%
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); FAkrM?0/
int nCount = input.readInt(); /C[Q?
nStartPos = new long[nCount]; q,i&%
nEndPos = new long[nCount]; *^ZJ&.
for(int i=0;i<nStartPos.length;i++) J!{t/_aw
{ eD|p1+76
nStartPos = input.readLong(); f`$F^=
nEndPos = input.readLong(); M_I.Y1|
} Q9yIQ{>H[
input.close(); ^n|yfvR
} 3X;k c>
catch(IOException e){e.printStackTrace ();} w#XD4kwQG
catch(Exception e){e.printStackTrace ();} "{;E+-/
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} wtl3Ex,DO
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private void processErrorCode(int nErrorCode) 8l1s]Kqr
{ uPT2ga ]
System.err.println("Error Code : " + nErrorCode); :*=fGwIWS
} t3qPocYQ
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//停止文件下载 OH\(;RN*
public void siteStop() DruiiA
{ 0P5s'2w
bStop = true; )>=!</@
for(int i=0;i<nStartPos.length;i++) 4'+g/i1S
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fileSplitterFetch.splitterStop(); u?-|sv*
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} O
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} %eE0a4^".
//负责部分文件的抓取 Sl;[9l2
**FileSplitterFetch.java 2 rFjYx8D!
*/ dwpE(G y6c
package NetFox; RoFOjCc>D.
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import java.io.*; `<Q[$z
import java.net.*; kl~)<,/@
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public class FileSplitterFetch extends Thread { ;!+-fn4C
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String sURL; //File URL j|KjQ'9
long nStartPos; //File Snippet Start Position 03/mB2|TF(
long nEndPos; //File Snippet End Position Ud_7>P$a
int nThreadID; //Thread's ID /h7uE
boolean bDownOver = false; //Downing is over [;Y,nSw
boolean bStop = false; //Stop identical kSpy-bVn
FileAccessI fileAccessI = null; //File Access interface h6Q~Di
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 'ti ~TG
{ 7BS5Eq B=
this.sURL = sURL; ]#\De73K
this.nStartPos = nStart; '5m4kDs
this.nEndPos = nEnd; *mJ\Tzc)
nThreadID = id; #z1/VZ
fileAccessI = new FileAccessI(sName,nStartPos);//定位 5SMV3~*P
} YNB7`:
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public void run() l$&dTI<#
{ 3#0y.. F
while(nStartPos < nEndPos && !bStop) UQg_y3
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{ *Fg)`M3g
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try{ x[y}{T
URL url = new URL(sURL); #De a$
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); p9E/#U8A_
httpConnection.setRequestProperty("User-Agent","NetFox"); wVq9t|V
String sProperty = "bytes="+nStartPos+"-"; 8:;]tt
httpConnection.setRequestProperty("RANGE",sProperty); ;nx.:f
Utility.log(sProperty); i-}Tt<^
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InputStream input = httpConnection.getInputStream(); p/qu4[Mm
//logResponseHead(httpConnection); P6I<M}p
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byte[] b = new byte[1024]; ~dC.,"
int nRead; iR!]&Oh
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) c{IL"B6>
{ zm{`+boH<
nStartPos += fileAccessI.write(b,0,nRead); %>y`VN
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//if(nThreadID == 1) '
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// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); #N$\d4q9
}
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Utility.log("Thread " + nThreadID + " is over!"); UcKVLzKs
bDownOver = true; MH|F<$42
//nPos = fileAccessI.write (b,0,nRead); ifNyVEHy
} gBO,
catch(Exception e){e.printStackTrace ();} ckb(+*+l
} !9{hbmF#
} ~Zn|(
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//打印回应的头信息 ULhXyItL
public void logResponseHead(HttpURLConnection con) BIS .,
{ Fi'ZId
for(int i=1;;i++)
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{ D~bx'Wr+
String header=con.getHeaderFieldKey(i); ,c-*/{3
if(header!=null) psse^rFg
//responseHeaders.put(header,httpConnection.getHeaderField(header)); J(K/z,4h
Utility.log(header+" : "+con.getHeaderField(header)); \*&?o51!e
else /1p5KVTKv
break; 6<9}>Wkf
} <5"&]!
.
} ^We}i
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{ P,hH~!
public void splitterStop() PhPe7^
{ cs7^#/3<
bStop = true; 2$MoKOx8$
} bIlNA )g
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} Y<jX[ET!
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/* A|4om=MO
**FileAccess.java 3AglvGK7{
*//文件访问(定位,写) a~J!G:(
package NetFox; 5}Id[%.x
import java.io.*; 8#HnV%|N
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public class FileAccessI implements Serializable{ f _$hK9I
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//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 a6gPJF[Jo
RandomAccessFile oSavedFile; m+(g.mvK>
long nPos; vQp'bRR
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public FileAccessI() throws IOException 5Po:$(
{ +$#<gp"
this("",0); pKpB
} "O-X*>?f
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public FileAccessI(String sName,long nPos) throws IOException xMNQT.A
{ O9zMD8
oSavedFile = new RandomAccessFile(sName,"rw"); Dn@ZS _f
this.nPos = nPos; !H@HgJ
-
oSavedFile.seek(nPos); rM^2yr7H
} 9-V'U\}L
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public synchronized int write(byte[] b,int nStart,int nLen) ',xUU{5?
{ .>#O'Z&q9
int n = -1; gOe!GnO
try{ 4`)r1D!U
oSavedFile.write(b,nStart,nLen); c-5AI{%bl6
n = nLen; \b%c_e
} FNuE-_
catch(IOException e) y2#"\5dC
{ 0;@>jo6,!
e.printStackTrace (); d/jP2uuA
} (_!I2"Q*
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return n; c_S~{a44Ud
} #;~HoOK*#
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} @8>bp#x/1
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/* akNqSZwj
**SiteInfoBean.java r180vbN$
*/ hSw=Oq82
package NetFox; Ha|}Oj
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public class SiteInfoBean { qPD(D{,f$
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private String sSiteURL; //Site's URL A.("jb@I
private String sFilePath; //Saved File's Path ,b&hLht
private String sFileName; //Saved File's Name .#bf9JOE
private int nSplitter; //Count of Splited Downloading File HV)aVkr/&
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public SiteInfoBean() [|1I.AZ{
{//nSplitter的缺省值为5 aQ$sn<-l
//default value of nSplitter is 5 &.?E[db"h
this("","","",5); {pH# zs4Y
} |u?VlRt
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) zs Q|LwQ
{ K$Vu[!l`
sSiteURL= sURL; 2[Lv_<i|
sFilePath = sPath; -$o0P'Vx
sFileName = sName; 7`;f<QNo
this.nSplitter = nSpiltter; iLZY6?_^
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} nOL.%
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public String getSSiteURL() kMurNA=
{ Uzzm2OS`
return sSiteURL; s$>n U
} <^Vj1s
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public void setSSiteURL(String value) Ve|:k5z
{ f0sGE5
sSiteURL = value; "E\mj'k
} .gDq+~r8O
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public String getSFilePath() rX?ZUw?u&
{ 9/{ zS3h3
return sFilePath; 8!Wh`n<
} ').)0;
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public void setSFilePath(String value) 30uPDDvar
{
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sFilePath = value; ;\2Z?Kq
} 4\&Y;upy+
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