/* "0CjP+1k
**SiteFileFetch.java #]E(N~
*/ @*>Sw>oet
package NetFox; Y
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import java.io.*; A(8n
import java.net.*; cK@jmGj+
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public class SiteFileFetch extends Thread { krB'9r<wa`
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SiteInfoBean siteInfoBean = null; //文件信息Bean -F\qnsZ2
long[] nStartPos; //开始位置 ;apzAF
long[] nEndPos; //结束位置 2-'Opu
FileSplitterFetch[] fileSplitterFetch; //子线程对象 $s\UL}Gc
long nFileLength; //文件长度 ;@3FF
boolean bFirst = true; //是否第一次取文件 e5?PkFV^a1
boolean bStop = false; //停止标志 a.@qGsIH
File tmpFile; //文件下载的临时信息 ~Rpm-^
DataOutputStream output; //输出到文件的输出流 T6#CK
`.%JjsD<
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) !ABiy6d
public SiteFileFetch(SiteInfoBean bean) throws IOException rJJ[X4$
{ vUA0FoOp
siteInfoBean = bean; cXnKCzSxZq
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); -|S]oJy
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); G8Z 4J7^
if(tmpFile.exists ()) i3VW1~ .8
{ S'LZk9E
bFirst = false; *\uM.m0$
read_nPos(); K_/zuTy
} DgHaOAdU
else 3;[DJ5
{ b:J(b?
nStartPos = new long[bean.getNSplitter()]; MZ>6o5K|
nEndPos = new long[bean.getNSplitter()]; p(F " /
} /9pM>Cd*Z
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} S4^N^lQ]
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public void run() ZR0r>@M3v<
{ Iu@y(wyg
//获得文件长度 -r7]S
//分割文件 Z8#Gwyinx
//实例FileSplitterFetch S8d8%R~1=h
//启动FileSplitterFetch线程 5kypMHJm
//等待子线程返回 ~EzaC?fQ
try{ :1ecx$
if(bFirst) !y:%0{l
{ cO2& VC
nFileLength = getFileSize(); ~ PWSo%W8
if(nFileLength == -1) U69u'G:
{ fBn"kr;
System.err.println("File Length is not known!"); 4Y> Yi*n
} (-77[+2
else if(nFileLength == -2) Ny- [9S-<
{ YevyN\,}V!
System.err.println("File is not access!"); M:KbD|
} g7V8D
else l_'[27
{ )d\j I
for(int i=0;i<nStartPos.length;i++) (>4aibA'P
{ :~Q!SL N
nStartPos = (long)(i*(nFileLength/nStartPos.length)); }R[#?ty;]
} $?G"GQ!.
for(int i=0;i<nEndPos.length-1;i++) g>rp@M
{ m([(:.X/IX
nEndPos = nStartPos[i+1]; oX@ya3!Pz
} )tHaB,
nEndPos[nEndPos.length-1] = nFileLength; LVJI_ O{fH
} 7hW+T7u?
} ._w8J"E5
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//启动子线程 w%AcG~`j!B
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; /M;#_+VK<
for(int i=0;i<nStartPos.length;i++) aI(7nJ=R
{ NcOPL\
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), o%{'UG
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), )n49lr6X
nStartPos,nEndPos,i); :A
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Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 5!YA o\S
fileSplitterFetch.start(); %J:SO_6
} gWABY%!}
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), =gfI!w
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ?"#%SKm
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", QxuhGA
nEndPos = " + nFileLength); p.I.iAk%G^
// fileSplitterFetch[nPos.length-1].start(); 7(M(7}EKA
w=]Ks'C]
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//等待子线程结束 X"gCRn%tn
//int count = 0; pLa[}=
//是否结束while循环 '{I_\~*
boolean breakWhile = false; =deMd`=J
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while(!bStop) CQ`=V2:"ON
{ _=ua6}Xp
write_nPos(); ^;,M}|<h
Utility.sleep(500); a?|vQ*W
breakWhile = true; *<N3_tx"
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for(int i=0;i<nStartPos.length;i++) ~DRmON5 M
{ F' U 50usV
if(!fileSplitterFetch.bDownOver) |@ ,|F:h<M
{ NK|? y
breakWhile = false; /525w^'pd
break; f/WQ[\<!I
} iGB_{F~t4}
} T=hh oGn
if(breakWhile) v_e9}yI
break; J"=1/,AS
} VJfJ/
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//count++; xtPLR/Z
//if(count>4) L9pvG(R%
// siteStop(); lis/`B\x
} WN(ymcdYB
h)~=Dm
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System.err.println("文件下载结束!"); +`7KSwa
} !O\;Nua
catch(Exception e){e.printStackTrace ();} N#lDW~e'
} 'r(1Nj
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DD" $1o"
//获得文件长度 1/p*tZP8i
public long getFileSize() {G <kA(Lm
{ syU9O&<
int nFileLength = -1; y/e2l
try{ dz~co Z9
URL url = new URL(siteInfoBean.getSSiteURL()); vR0];{
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); bjAnaya
httpConnection.setRequestProperty("User-Agent","NetFox"); ThPE
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int responseCode=httpConnection.getResponseCode();
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if(responseCode>=400) ]Jh+'RK\#
{ y_xnai
processErrorCode(responseCode); aP'"G^F
return -2; //-2 represent access is error ARcv;H 5
} 8|E'>+ D_-
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String sHeader; s1|/S\
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for(int i=1;;i++) ==i[w|
{ XqM3<~$
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); cYXM__
//Utility.log(in.readLine()); /1?R?N2>0
sHeader=httpConnection.getHeaderFieldKey(i); @HZKc\1
if(sHeader!=null) cRX~z
{ >0p$(>N]
if(sHeader.equals("Content-Length")) }j,[ 1@S
{ L[5=h
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); d #jK=:eK
break; Z|RY2P>E
} Xf)|Pu
} 099sN"kf
else -,K!
break; q80S[au
} ]*7Y~dO
} EUsI%p
catch(IOException e){e.printStackTrace ();} oK{ V7
catch(Exception e){e.printStackTrace ();} UT}i0I9
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Utility.log(nFileLength); EGl^!.'
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return nFileLength; 1s1=rZ!
} 5U_H>oD
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//保存下载信息(文件指针位置) T{wuj[Q#:
private void write_nPos() u&wiGwF[
{ j5@:a
try{ K'#E3={tt
output = new DataOutputStream(new FileOutputStream(tmpFile)); +H$!a
output.writeInt(nStartPos.length); =IAsH85Q
for(int i=0;i<nStartPos.length;i++) \QU^>23
{ Xl74@wq
// output.writeLong(nPos); Ts~L:3oaQ
output.writeLong(fileSplitterFetch.nStartPos); $ cj>2.
output.writeLong(fileSplitterFetch.nEndPos); `K,1K
} G\NPV'
output.close(); *.)tG
} ^&g=u5
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catch(IOException e){e.printStackTrace ();} wcDRH)AW.
catch(Exception e){e.printStackTrace ();} !bV5Sr^
}
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//读取保存的下载信息(文件指针位置) q\\gpCgp
private void read_nPos() vFEQ7qI
{ / g 2b
try{ IHRGw
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); kA7mLrON
int nCount = input.readInt(); IKie1!ZU{"
nStartPos = new long[nCount]; cyJG8f
nEndPos = new long[nCount]; bTQNb!&
for(int i=0;i<nStartPos.length;i++) Ytgj|@jsp
{ aZbw]0q@o
nStartPos = input.readLong(); l3 DYg
nEndPos = input.readLong(); 1#1 riM -
} u+{a8=
input.close(); /PsnD_s]5
} }jill+]
catch(IOException e){e.printStackTrace ();} A=Ss6-Je
catch(Exception e){e.printStackTrace ();} %c[ V
} #pcP!
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private void processErrorCode(int nErrorCode) Pb*5eXk
{ GKcv<G208
System.err.println("Error Code : " + nErrorCode); a'\o7_
} Mfv1Os:ST
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//停止文件下载 10H)^p%3+
public void siteStop() <oz!H[!
{ zRPeNdX
bStop = true; vB+ '
for(int i=0;i<nStartPos.length;i++) Zdn~`Q{
fileSplitterFetch.splitterStop(); "1,pHR-+R
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} T9s2bC.z55
} @gG<le6
//负责部分文件的抓取 \rPbK+G.
**FileSplitterFetch.java O(_[ayE
*/ &5:tn=E
package NetFox; B-l'vVx
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import java.io.*; B 2ec@]uD`
import java.net.*; 36am-G
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public class FileSplitterFetch extends Thread { h>Hb`G<
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String sURL; //File URL )Y)pmjZaG
long nStartPos; //File Snippet Start Position xpOg8u5
long nEndPos; //File Snippet End Position }K3x
int nThreadID; //Thread's ID >a}f{\Q
boolean bDownOver = false; //Downing is over @/k@WhFZ
boolean bStop = false; //Stop identical Onwp-!!.
FileAccessI fileAccessI = null; //File Access interface @Pt="*g
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException H9CS*|q6r
{ B,{K*-7)MX
this.sURL = sURL; MR}Agu#LG
this.nStartPos = nStart; +a*tO@HG
this.nEndPos = nEnd; \G-KplKS
nThreadID = id; &~W:xg(jN
fileAccessI = new FileAccessI(sName,nStartPos);//定位 9*a=iL*Nw
} h9eMcCU
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public void run() 0tU.(
{ 4^URX>nx8
while(nStartPos < nEndPos && !bStop) QVtQx>K`
{ a1@Y3MQ;i
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try{ <n#DT
URL url = new URL(sURL); *BR ^U$,e
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 1/"WD?a
httpConnection.setRequestProperty("User-Agent","NetFox"); rdJR 2
String sProperty = "bytes="+nStartPos+"-"; s-v
httpConnection.setRequestProperty("RANGE",sProperty); &?(?vDFfZ
Utility.log(sProperty); +>PX&F
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InputStream input = httpConnection.getInputStream(); !50[z:
//logResponseHead(httpConnection); & \f{E\A#
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byte[] b = new byte[1024]; ?Ec7" hK
int nRead; f`Fi#EKT
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) zE_i*c"`
{ D
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nStartPos += fileAccessI.write(b,0,nRead); YD7Oao4:o
//if(nThreadID == 1) $ ,
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// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); X*\J_
} #{\%rWnCm
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Utility.log("Thread " + nThreadID + " is over!"); E@b(1@
bDownOver = true;
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//nPos = fileAccessI.write (b,0,nRead); rh^mJUh
} r3PT1'P?L
catch(Exception e){e.printStackTrace ();} cMOyo<F#^=
} LSRk7'0
} o !U
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//打印回应的头信息 1.6:#
public void logResponseHead(HttpURLConnection con) .;N 1N^
{ (UxW;
for(int i=1;;i++) _FWBUZ;N
{ U-3i
String header=con.getHeaderFieldKey(i);
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if(header!=null) =z
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//responseHeaders.put(header,httpConnection.getHeaderField(header)); @!1x7%]G
Utility.log(header+" : "+con.getHeaderField(header)); BSVxN
else c3CWRi`LE
break; wY_)y
} _/tHD]um
} 9c("x%nLpB
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public void splitterStop() T]c%!&^_
{ lx7Q.su'
bStop = true; &:`U&06q
} (P:<t6;+
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} Ug<#en
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/* q1KZ5G)6GJ
**FileAccess.java \}|o1Xh2
*//文件访问(定位,写) Sxh]R+Xb
package NetFox; Iepsz
import java.io.*; jJPGrkr
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public class FileAccessI implements Serializable{ $[a8$VY^Cm
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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 ]Yn_}Bq
RandomAccessFile oSavedFile; SR|`!
long nPos; @/ohg0
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public FileAccessI() throws IOException 9eQxit7
{ R1$:~p2m
this("",0);
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}
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public FileAccessI(String sName,long nPos) throws IOException =h5H~G5AT
{ ]z/8KL
oSavedFile = new RandomAccessFile(sName,"rw"); oV|4V:G q
this.nPos = nPos; \6 Zr
oSavedFile.seek(nPos); [rV>57`YD
} 4p,EBn9(
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public synchronized int write(byte[] b,int nStart,int nLen) P 'od`
{ hFy;ffs.
int n = -1; DrY:9[LP
try{ ]Hefm?9*^
oSavedFile.write(b,nStart,nLen); j~jV'f.:H
n = nLen; =*c7i]@}
} .7avpOfz
catch(IOException e) #PH~1`vl
{ IS &ZqE(`e
e.printStackTrace (); NUWDc]@J*
} =k^Y?.
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return n; a C\MJ9
} OX?\<),
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} m!tbkZHQn0
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/* LcTt)rs
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**SiteInfoBean.java O
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*/ ':3pq2{
package NetFox; {YAJBIvHV
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public class SiteInfoBean { q=Sgk>NA
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private String sSiteURL; //Site's URL 1Vrh4g.l
private String sFilePath; //Saved File's Path QLvHQtzwX
private String sFileName; //Saved File's Name J$GUB3
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private int nSplitter; //Count of Splited Downloading File 1VG4S){}\9
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public SiteInfoBean() 2a`o
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{//nSplitter的缺省值为5 L\xk:j1[
//default value of nSplitter is 5 Ez
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this("","","",5); KyYM fC
} gM
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) zuJ@E=7
{ KWowN;
sSiteURL= sURL; e478U$
sFilePath = sPath; >>t@}F)
sFileName = sName; Eg#K.5hJ
this.nSplitter = nSpiltter; ~obqG!2m
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} |Mup8(gCk
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public String getSSiteURL() 4ew"
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{ bYpntV
return sSiteURL; t^R][Ay&
} bnq;)>&
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public void setSSiteURL(String value) ~J wb`g.
{ RKHyw08
sSiteURL = value; &5fJPv &
} c'>/
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public String getSFilePath() XHK<AO^
{ 4sF"6+%5d
return sFilePath; 5cL83FQh
} 1 d}Z(My
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public void setSFilePath(String value) C*)3e*T*
{ GP!?^r:en
sFilePath = value; |[<_GQl
} U@_dm/;0&
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public String getSFileName() 5[k/s}g
{ Xx."$l
return sFileName; :DrWq{4
} `w#Oih!6A|
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public void setSFileName(String value) $+8cc\fq
{ Pk{_(ybaY
sFileName = value; bv]`!g:
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} LSa,1{
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public int getNSplitter() n7B7 m,@1
{ $2oTkOA
return nSplitter; "bFTk/
} u)X=Qm)
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public void setNSplitter(int nCount) >Ea8G,
{ ~
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nSplitter = nCount; :~b3^xhc^
} p `8s
} 0bceI
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/* 1n >X[!
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**Utility.java AF;)#T<
*/ rn/ /%
package NetFox; 3m]4=
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public class Utility { 5gH1.7i b
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public Utility() 2#KJ asX
{ "cE7
5
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} q-[@$9AS
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//线程睡眠 f/
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public static void sleep(int nSecond) 9_q#W'/X
{ |4)>:d
try{ HmiR.e%<b
Thread.sleep(nSecond); ^1S!F-H4\
} PlU*X8
catch(Exception e) ?J%1#1L"/
{ B -?6M6#
e.printStackTrace (); yCd-9zb=
} L"E7#}
} <;9I@VYK
0IwA#[m1`
//日志 ?Nup1!D
public static void log(String sMsg) 2KB\1&