/* :fUNc^\2
**SiteFileFetch.java m8eoD{
*/ +Y2D @K?)
package NetFox; ~Q]/=HK
import java.io.*; mE'HRv
import java.net.*; H_ NoW
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public class SiteFileFetch extends Thread { i[wnG )
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SiteInfoBean siteInfoBean = null; //文件信息Bean uc\G)BN
long[] nStartPos; //开始位置 Y1F%-o
long[] nEndPos; //结束位置 {DE4PE`
FileSplitterFetch[] fileSplitterFetch; //子线程对象 X_)I"`
long nFileLength; //文件长度 ) r"7" i
boolean bFirst = true; //是否第一次取文件 W}|k!_/
boolean bStop = false; //停止标志 Hq&MePl[
File tmpFile; //文件下载的临时信息 :*R+ee,&-
DataOutputStream output; //输出到文件的输出流 A+}O~,mxP8
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) l\2"u M#7
public SiteFileFetch(SiteInfoBean bean) throws IOException PG@C5Rnu
{ "*TP@X?@f
siteInfoBean = bean; dz/3=0
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); hM&VMa [
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ? :A%$T
if(tmpFile.exists ()) Tm0\Oue0
{ M5xMTP-
bFirst = false; (Zej\lEN
read_nPos(); F ^lau f
} {IF$\{Al
else QHsJo|.
{ #miG"2ea..
nStartPos = new long[bean.getNSplitter()]; <p?oFD_e4
nEndPos = new long[bean.getNSplitter()]; 8|u8J0^
} jN(c`Gb
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} \K lY8\c[
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public void run() d"a\`#
{ kt7Em b}
//获得文件长度 aU#r`D@0
//分割文件 !,sQB_09C
//实例FileSplitterFetch 'oM=ZU8wo
//启动FileSplitterFetch线程 Wd7qpWItjQ
//等待子线程返回 X@/wsW(kM\
try{ q9\(<<f|
if(bFirst) umpa!q};
{ n"vO?8Sx
nFileLength = getFileSize(); 6aWNLJ@
if(nFileLength == -1) V<U9Pj^?^
{ q AsTiT6r
System.err.println("File Length is not known!"); 1 l^`
} SPvKq=,
else if(nFileLength == -2) O7J V{'?
{ ?xwZ< A
System.err.println("File is not access!"); Y$fF"pG?
} {+gK\Nz
else )/z+W[t
{ %wGQu;re
for(int i=0;i<nStartPos.length;i++) +JB*1dz>8
{ I]Z"?T
nStartPos = (long)(i*(nFileLength/nStartPos.length)); 2Y;iqR
} a!&m\+?
for(int i=0;i<nEndPos.length-1;i++) |T*t3}
{ 3g0v,7,Zv
nEndPos = nStartPos[i+1]; YdYaLTz
} qy-Hv6oof
nEndPos[nEndPos.length-1] = nFileLength; %4/X;w\3
} g}BS:#$
} cA{,2CYc
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//启动子线程 5X9*K
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ?9~|K/ `l
for(int i=0;i<nStartPos.length;i++) #qEUGD`
{ S@ItgG?X
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), TUQe.oAi
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), jz I,B
nStartPos,nEndPos,i); 1NAtg*`
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); `R-VJR 2"
fileSplitterFetch.start(); c=Zurqj
} m'2EiYX$}\
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), .G/RQn]x}
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); |KSoS#Y
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", oCKn
nEndPos = " + nFileLength); +@do<2l]
// fileSplitterFetch[nPos.length-1].start(); `Tr !Gj_
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iP?lP= M
//等待子线程结束 7V"Jfh4_
//int count = 0;
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//是否结束while循环 ~S0T+4$
boolean breakWhile = false; l i%8X.
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while(!bStop) i>=y3x"
{ C1-Jj_XQ.
write_nPos(); nd h\+7
Utility.sleep(500); pQ`S%]k.<
breakWhile = true; ~b9fk)z!
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for(int i=0;i<nStartPos.length;i++) {dvsZJj
{ n&E/{o(
if(!fileSplitterFetch.bDownOver) eM^Y
{ "gXvnl
breakWhile = false; n%{oFTLCo
break; *#B"%;Ln
} V|;os
} D ~NWP%H
if(breakWhile) B\>3[_n
break; _9z+xl
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//count++; %z["TVH
//if(count>4) k-$J #
// siteStop(); c`#4}$
} oXGP6#
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System.err.println("文件下载结束!"); 9}11>X
} 6/|"y
catch(Exception e){e.printStackTrace ();} 0"u=g)3
} r6e!";w:U
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//获得文件长度 3\5I4#S
public long getFileSize() }ct*<zj[~u
{ -raZ6?Zjc
int nFileLength = -1; 5:l"*
try{ dg;E,'e_
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URL url = new URL(siteInfoBean.getSSiteURL()); !jN$U%/,%.
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); X+//$J
httpConnection.setRequestProperty("User-Agent","NetFox"); ^ANz=`N5,
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int responseCode=httpConnection.getResponseCode(); vpu
if(responseCode>=400) Ap`D{u/
{ ~h444Hp=
processErrorCode(responseCode); RH;Kbu
return -2; //-2 represent access is error Cta!"=\
} =5M
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String sHeader; T!Uf
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for(int i=1;;i++) 6X$iTJ[\x
{ fU4{4M+9"
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); '59l.
//Utility.log(in.readLine()); -257g;
sHeader=httpConnection.getHeaderFieldKey(i); .%mjE'
if(sHeader!=null) ZHc;8|}
{ *q(HW
if(sHeader.equals("Content-Length")) DZX4c 2J
{ 5$
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); S3YAc4
break; "QV1G'
} SrXuiiK
} q^b_'We_9
else z0 _/JwJn
break; zKaEh
} Redxg. P
} ^s?i&K,!
catch(IOException e){e.printStackTrace ();} @#| R{5=+
catch(Exception e){e.printStackTrace ();} F2["Ak NM
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Utility.log(nFileLength); m{0u+obi&w
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return nFileLength; )hK1W\5
} s B!2't
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//保存下载信息(文件指针位置) Px"K5c*
private void write_nPos() }ilX
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{ :a9$f8*b
try{ " qrL:,
output = new DataOutputStream(new FileOutputStream(tmpFile)); F84?Mi{r2
output.writeInt(nStartPos.length); , MU9p*
for(int i=0;i<nStartPos.length;i++) aV?r %'~Z
{ Jl,\^)DSw
// output.writeLong(nPos); ]mvVX31T
output.writeLong(fileSplitterFetch.nStartPos); iMOf];O)
output.writeLong(fileSplitterFetch.nEndPos); TZk.h8
} fT_swhIO
output.close(); Qmn'G4#@E
} E{6X-C[)v
catch(IOException e){e.printStackTrace ();} q"pnFK9/L
catch(Exception e){e.printStackTrace ();} Nh\y@\F>
} t8FgQ)tk
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//读取保存的下载信息(文件指针位置) rzgzX
private void read_nPos() Zu %oIk
{ @?"t&h
try{ RlTVx:
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); )ur&Mnmm
int nCount = input.readInt(); X+XbIbUuL
nStartPos = new long[nCount]; MBH/,Yd
nEndPos = new long[nCount]; &b&o];a
for(int i=0;i<nStartPos.length;i++) $~*d.
{ L\asrdL?=
nStartPos = input.readLong(); "n=Ih_J
nEndPos = input.readLong(); Gu9x4p
} )d-{#
input.close(); EM.rO/qcW
} uDi#a~m@
catch(IOException e){e.printStackTrace ();} %uLyL4*L(p
catch(Exception e){e.printStackTrace ();} W4(O2RU
} :7Q,
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private void processErrorCode(int nErrorCode) ?YbZVoD)J
{ EaGS}=qY5
System.err.println("Error Code : " + nErrorCode); Y^f12%
} Gk5SG_o
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//停止文件下载 /q8?xP.
public void siteStop() >w=xGb7
{ D?"TcA
bStop = true; i<Be)Y-'
for(int i=0;i<nStartPos.length;i++)
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fileSplitterFetch.splitterStop(); L)ry!BuHI
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} v{2Vg
} ^~dvA)bH
//负责部分文件的抓取 +(<}`!9M*
**FileSplitterFetch.java i@ avm7
*/ L~FE;*>7
package NetFox; g#ONtY@*U
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import java.io.*; ?RD)a`y51
import java.net.*; )(pJ~"'L
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public class FileSplitterFetch extends Thread { ai,Mez
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String sURL; //File URL ico(4KSk
long nStartPos; //File Snippet Start Position c!%:f^7g
long nEndPos; //File Snippet End Position 'HV}Tr
int nThreadID; //Thread's ID PF(P"f.?D
boolean bDownOver = false; //Downing is over ,uP1U@Cas
boolean bStop = false; //Stop identical AcF;5h
FileAccessI fileAccessI = null; //File Access interface 1dK^[;v>3
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 9bT,=b;
{ U)p P^:|
this.sURL = sURL;
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this.nStartPos = nStart; rkl/5z??
this.nEndPos = nEnd; J)n g,i
nThreadID = id; 2aN
fileAccessI = new FileAccessI(sName,nStartPos);//定位 wWflZ"%
} O"mU#3?
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public void run() }r/L 9
{ E}qeh"sJt
while(nStartPos < nEndPos && !bStop) -K/' }I
{ 6P;1I+5m{q
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try{ Q_#X*I
URL url = new URL(sURL); 3P p*ID
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 1W
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httpConnection.setRequestProperty("User-Agent","NetFox"); ? F fw'O
String sProperty = "bytes="+nStartPos+"-"; $/45*
httpConnection.setRequestProperty("RANGE",sProperty); ,Fg&<Be}Jx
Utility.log(sProperty); 0r=Lilu{q
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InputStream input = httpConnection.getInputStream(); !U/:!e`N
//logResponseHead(httpConnection); (.!q~G
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);;UNO21+
byte[] b = new byte[1024]; eeb8v:4
int nRead; #
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while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) |_~BV&g,N
{ $zz=>BOk
nStartPos += fileAccessI.write(b,0,nRead); .?S#DS )
//if(nThreadID == 1) W9V%Xc`LQ
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); AJ:@c7:eS
} :"O=/p+*Us
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Utility.log("Thread " + nThreadID + " is over!"); &H5
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bDownOver = true; bTHa;* `
//nPos = fileAccessI.write (b,0,nRead); j&m<=-q
} xyz-T1ib
catch(Exception e){e.printStackTrace ();} 5
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} XW]|Mv[M
} %_SE$>v^
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}.zgVLL
//打印回应的头信息 o<P%|>qX
public void logResponseHead(HttpURLConnection con) L +. K}w
{ G68N@g
for(int i=1;;i++) h/(9AO}t
{ 3[aJ=5
String header=con.getHeaderFieldKey(i); dGh<R|U3
if(header!=null) 5'V'~Q%
//responseHeaders.put(header,httpConnection.getHeaderField(header)); r?/>t1Z
Utility.log(header+" : "+con.getHeaderField(header)); HNjkRl)QR
else 2 >xV&