/* 7 w<e^H?
**SiteFileFetch.java Dv*d$
*/ q@^^jlHP
package NetFox; 8RI'Fk{
import java.io.*; X<D fzd oI
import java.net.*; A"O\u=!
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public class SiteFileFetch extends Thread { 95E#
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SiteInfoBean siteInfoBean = null; //文件信息Bean :}R,a=N
long[] nStartPos; //开始位置 )<f4F!?,A
long[] nEndPos; //结束位置 ["#H/L]3
FileSplitterFetch[] fileSplitterFetch; //子线程对象 kTcW=AXu
long nFileLength; //文件长度 !|l7b2NEz-
boolean bFirst = true; //是否第一次取文件 !rF1Remw
boolean bStop = false; //停止标志 g t9(5p
File tmpFile; //文件下载的临时信息 NM9,AG
DataOutputStream output; //输出到文件的输出流 >,QCKZH
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) MGf *+!y,
public SiteFileFetch(SiteInfoBean bean) throws IOException f62rm[
{ 2+/r~LwbK
siteInfoBean = bean; m] yUcj{F
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Eg&:yF}?(
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); `-e9#diQe
if(tmpFile.exists ()) @u`W(Ow
{ E+ |K3EJ
bFirst = false; %gQUog
read_nPos(); NJSbS<O
} "UreV
else +p`BoF9~
{ +_k A&Q(t
nStartPos = new long[bean.getNSplitter()]; Ir-QD!!<
nEndPos = new long[bean.getNSplitter()]; 5JEOLPS
} j{'_sI{{
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} i=*H|)
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public void run() }K@m4`T
{ pKpB
//获得文件长度 YK[2KTlo
//分割文件 #t;]s<
//实例FileSplitterFetch =|``d-
//启动FileSplitterFetch线程 |5%T)
//等待子线程返回 0e+#{k
try{ + kT ]qH
if(bFirst) x/CM)!U)
{ NP\mzlI~@
nFileLength = getFileSize(); |O6/p7+.
if(nFileLength == -1) &tvtL
{ l$pz:m]Id
System.err.println("File Length is not known!"); (sQXfeMz
} k7Qs#L
else if(nFileLength == -2) cD6 ^7QF
{ Xp9I3nd|
System.err.println("File is not access!"); dt@c,McN|Q
} {d*OJ/4
else 54Rp0otv
{ 37kVJQcA1
for(int i=0;i<nStartPos.length;i++) {| hg3R~A
{ [T,^l#S1
nStartPos = (long)(i*(nFileLength/nStartPos.length)); |hw.nY]J
} 8C8S)
;
for(int i=0;i<nEndPos.length-1;i++) EnlAgL']|
{ 7I'C'.6iM
nEndPos = nStartPos[i+1]; jd-ccnR l
} W>i%sHH6
nEndPos[nEndPos.length-1] = nFileLength; CEI"p2
} `7w-_o
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} jk&xzJH.
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//启动子线程 2/r8%Sq
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; B7[d^Y60B
for(int i=0;i<nStartPos.length;i++) d8vf
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{ [
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), `j@1]%&z
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Q17dcgd
nStartPos,nEndPos,i); C{pOGc@
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 3sdL\
fileSplitterFetch.start(); ap )B%9
} ur8+k4]\"
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ,G%UU~/a
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); }R#W<4:
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", u-,}ug|
nEndPos = " + nFileLength); ceE]^X;p
// fileSplitterFetch[nPos.length-1].start(); g assOd
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//等待子线程结束 F""9O6u
//int count = 0; Ch>F11kC
//是否结束while循环 30uPDDvar
boolean breakWhile = false; /m"/#; ^l
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while(!bStop) k*fU:q1
{ +m%%Bz>
write_nPos(); hk4t #Km
Utility.sleep(500); i^%$ydg
breakWhile = true; )e?&'wa>
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for(int i=0;i<nStartPos.length;i++) ZK^cG'^2|
{ )ciP6WzzbI
if(!fileSplitterFetch.bDownOver) rvd$4l^
{ hOAZvrfQ4
breakWhile = false; `2s@O>RV
break; 70c]|5
} f<@!{y2Xe
} hvw9i7#
if(breakWhile) Q!1 ;xw~
break; TSP%5v;Dh
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//count++; fx_#3=bXi
//if(count>4) |^1U<'oM#
// siteStop(); 8J(j}</>a
} RtMI[
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System.err.println("文件下载结束!"); ResU5Ce~
} {\[ Gl
catch(Exception e){e.printStackTrace ();} K4!-%d$
} yQ[;y~W
}%jF!d
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//获得文件长度 J2W-l{`r<
public long getFileSize() ]5Uuz?:e
{ ^Q s}2%
int nFileLength = -1; V^2_]VFj
try{ crM5&L9zF
URL url = new URL(siteInfoBean.getSSiteURL()); |
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); JnBUW"
httpConnection.setRequestProperty("User-Agent","NetFox"); o]e,5]
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int responseCode=httpConnection.getResponseCode(); hC:'L9Y
if(responseCode>=400) ,&t+D-s<f
{ M5`v^>
processErrorCode(responseCode); 7s|'NTp
return -2; //-2 represent access is error ff#7}9_mh
} uYUFxm
7]h %?W!
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String sHeader; J6Z[c*W
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for(int i=1;;i++) }\"EI<$s
{ '$tCAS
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Ww]$zd-bo
//Utility.log(in.readLine()); }T?X6LA$I8
sHeader=httpConnection.getHeaderFieldKey(i); bwsKdh
if(sHeader!=null) a1cX+{W
{ .a*?Pal@@
if(sHeader.equals("Content-Length")) <XdnVe1
{ R}&?9tVRR
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); /%T/@y
break; 8 1,N92T5
} ]EiM~n
} gQ+]N*.
else Th)
break; c+:ZmrP/
} 0@ `]m
} 0j$\k|xFXZ
catch(IOException e){e.printStackTrace ();} %F*9D3^h
catch(Exception e){e.printStackTrace ();} LE\*33k_
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Utility.log(nFileLength); voa)V1A/]
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return nFileLength; q)q3p
} ` ~GXK
"- 4|HA
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//保存下载信息(文件指针位置) k6tCfq;
private void write_nPos() fv;Q*; oC&
{ QQJGqM3a2
try{ U2VEFm6
output = new DataOutputStream(new FileOutputStream(tmpFile)); CmU@8-1
output.writeInt(nStartPos.length); V3,C5KKk&z
for(int i=0;i<nStartPos.length;i++) {wSi?;[Gq
{ VfnL-bDGV
// output.writeLong(nPos); 4 9qa
output.writeLong(fileSplitterFetch.nStartPos); /J`}o}
output.writeLong(fileSplitterFetch.nEndPos); ?JuJu1
} ?^&ih:"
output.close(); /X}1%p
} HSruue8
catch(IOException e){e.printStackTrace ();} )~'UJPK
catch(Exception e){e.printStackTrace ();} m$8siF{<q
} 1mFH7A($
}8O9WS
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//读取保存的下载信息(文件指针位置) c &c
private void read_nPos() & 9e
{ &8VH m?h
try{ pSx5ume95"
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); _S_,rTf&
int nCount = input.readInt(); {|9knP
nStartPos = new long[nCount]; h,[L6-n
nEndPos = new long[nCount]; ?q!4 REM
for(int i=0;i<nStartPos.length;i++) l$u52e!7
{ <@J$hs9s
nStartPos = input.readLong(); U6JD^G=qR,
nEndPos = input.readLong(); `^#Rwn#
} h7]+#U]mi
input.close(); < F5VJ
} w1<pQ[A
catch(IOException e){e.printStackTrace ();} N XB8u6
catch(Exception e){e.printStackTrace ();} MR
"f)
} 6*,55,y
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private void processErrorCode(int nErrorCode) g}~s"Sz
{ *)[fGxz
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System.err.println("Error Code : " + nErrorCode); 60{G
4b)
} m{>1#1;$t
&>-'|(m+2
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//停止文件下载 bWL!=
public void siteStop() w/NT 5
{ sm##owI
bStop = true; $mxG-'x%K
for(int i=0;i<nStartPos.length;i++) 'e:4
fileSplitterFetch.splitterStop(); c@>ztQU*
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} &pK0>2
} g_4%M0&AX
//负责部分文件的抓取 +At[[
**FileSplitterFetch.java H@- GYX"4
*/ cRI2$|
package NetFox; Dp['U
m
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import java.io.*; KyIUz9$
import java.net.*; <=CABWO.
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public class FileSplitterFetch extends Thread { p` ~=v4;b
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String sURL; //File URL lOA
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long nStartPos; //File Snippet Start Position 2KO`+
long nEndPos; //File Snippet End Position jNbVp{%/S}
int nThreadID; //Thread's ID E$_zBD%
boolean bDownOver = false; //Downing is over v2gk1a&
boolean bStop = false; //Stop identical L=54uCv
Q
FileAccessI fileAccessI = null; //File Access interface UDZ0ne0-
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0.m-}
public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException zWPX
{ (k+*0.T&?
this.sURL = sURL; Q~.t8g/
this.nStartPos = nStart; 7Z9'Y?[m
this.nEndPos = nEnd; h[Sd3Z*
nThreadID = id; T!?tyW
fileAccessI = new FileAccessI(sName,nStartPos);//定位 N, u]2,E
} =84EX<B
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public void run() ;4dFL\KU
{ W.s8!KH:
while(nStartPos < nEndPos && !bStop) &b>&XMIK
{ S/*\j7cj
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@}PXBU
try{ qh W]Wd"g
URL url = new URL(sURL); )Vy0V=
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); |3FGMg%
httpConnection.setRequestProperty("User-Agent","NetFox"); #Rfcp!
String sProperty = "bytes="+nStartPos+"-"; #oiU|>3Y
httpConnection.setRequestProperty("RANGE",sProperty); S;t`C~l\
Utility.log(sProperty); 3S#p4{3
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InputStream input = httpConnection.getInputStream(); 5"G-r._
//logResponseHead(httpConnection); myVa5m!7Q
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byte[] b = new byte[1024]; >jiez,
int nRead; z.(DDj
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 2::YR?
{ QoUdTIIL
nStartPos += fileAccessI.write(b,0,nRead); K2Ro0
//if(nThreadID == 1) 'aV'Am+:
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); *@^@7`W
} teb(gUy}L6
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Utility.log("Thread " + nThreadID + " is over!"); <L*`WO]\l
bDownOver = true; 7l/ZRz}1
//nPos = fileAccessI.write (b,0,nRead); :J@3:+sr
} tBJ4lb
catch(Exception e){e.printStackTrace ();} A4rMJ+!5
} cR!M{U.q
} a-S
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//打印回应的头信息 p-\->_9)y`
public void logResponseHead(HttpURLConnection con) 31 <0Nw;l
{ .9Cy<z
for(int i=1;;i++) )HI\T];
{ $aU.M3
String header=con.getHeaderFieldKey(i); du~V=%9
if(header!=null) V'>P lb.A
//responseHeaders.put(header,httpConnection.getHeaderField(header)); *aS+XnT/
Utility.log(header+" : "+con.getHeaderField(header)); Nr]Fh
else `9^+KK "
break; 479X5Cl
} U/AiI;Ne
} <%d!Sk4
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public void splitterStop() AWMJ/E*T
{ 4'`P+p"A
bStop = true; U$OI]Dd9
} QD3tM5(Yr
})70S8k
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} yZ[g2*1L
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vOz1& |;D
/* b+:J?MR;}
**FileAccess.java VZr:yE
*//文件访问(定位,写) -@_v@]:
package NetFox; 6hd<ys?
import java.io.*; l"}_+5
b FajK;
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public class FileAccessI implements Serializable{ ,>b>I#{
*5k40?w
//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 of_y<dd[G
RandomAccessFile oSavedFile; ^Z;zA@[wt
long nPos; &*7KQd
F{a;=h#@Q
/; Bmh=
public FileAccessI() throws IOException wxc#)W
{ w5%i
this("",0); e*lL.
} njX$?V
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public FileAccessI(String sName,long nPos) throws IOException UWKgf? _
{ cXqYO|3/M
oSavedFile = new RandomAccessFile(sName,"rw"); YVDFcN9v
this.nPos = nPos; ]r|oNGD)G
oSavedFile.seek(nPos); p+V#86(3
} %2zmc%]r
m?<E >-bI
/ 'qoKof
public synchronized int write(byte[] b,int nStart,int nLen) HVHv,:bPo
{ wTa u.Bo
int n = -1; xxu
try{ kc^,V|Nbq6
oSavedFile.write(b,nStart,nLen); ,oA<xP-*
n = nLen; ^r&)@R$V
} Wvr{l
catch(IOException e) {JP q.A
{ kzRJzJq uP
e.printStackTrace (); W/ Q*NB
} ?PT>V,&
<R /\nY Xz
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return n; [ncK+rGAc
} I}
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} !o /=,ZIx
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/* v.jxG{~.
**SiteInfoBean.java m|aK_
*/ +
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package NetFox; ;ItH2Lw<&
uX6yhaOp|
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public class SiteInfoBean { h= sNj
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'k X8}bx
private String sSiteURL; //Site's URL C1k< P
private String sFilePath; //Saved File's Path {rUg,y{v
private String sFileName; //Saved File's Name "0An'7'm
private int nSplitter; //Count of Splited Downloading File oBkhb
y QW7ng7D0
"B_3<RSL
public SiteInfoBean() *5%vU|9b
{//nSplitter的缺省值为5 -&5YRfr!
//default value of nSplitter is 5 N,Eap KG
this("","","",5); K*>%,mP$i
} )XN_|zCk
e73=*~kfR
hIJtu;}zU
public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) C`[<6>&y
{ fST.p|b7
sSiteURL= sURL; [IL*}M!
sFilePath = sPath; MuoE~K2
sFileName = sName; dHc\M|HCC
this.nSplitter = nSpiltter; e&}W#
h'y%TOob
&lQ%;)'
} AW]\n;f
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public String getSSiteURL() Eomfa:WL
{ 'hpOpIsHa
return sSiteURL; V`Cyx^P
} xyp{_ MZ
\}Jznzx;
YOl$sgg}
public void setSSiteURL(String value) !5`MiH
{ M@Th^yF+8H
sSiteURL = value; +Nt4R:N
} XO+BZB`F
;c!> =
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public String getSFilePath() JrzPDb`m
{ 2XP
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return sFilePath; u8Ys2KLpL
}
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a-{|/
n%
public void setSFilePath(String value) fAsb:P
{ [o)K1>>7
sFilePath = value; GX>8B:]o|
} &dyQ6i$],
1}(22Q;
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public String getSFileName() V]7/hN-Y}
{ pY31qhoZ.
return sFileName; /<rvaR
} )bUnk+_
(GJtTp~2C4
)UzJ2Pa<+_
public void setSFileName(String value) UB$}`39@
{ .j]tzX
sFileName = value; $vs],C"pX
} 8 v/H;65
R"B{IWQi
) /raTD
public int getNSplitter() w1/QnV
{ tOIqX0dWd
return nSplitter; Y2`sL,'h
} dyQ7@K.E
^ja]e%w#
V(';2[)
public void setNSplitter(int nCount) @6;OF5VsQ
{ *:%&z?<Fw
nSplitter = nCount; iLy^U*yK
} (?z?/4>7<
} odhcD;^X1
<.h7xZ
)N.3Q1g-
/* LU6R"c11
**Utility.java K9N31'
*/ lC5zqyG
package NetFox; ,6^<Vg
@Jd&[T27Lr
\BHZRytQF
public class Utility { yYz{*hq
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v=k+MvX
public Utility() $kUB%\`
{ lR?y
tIY
KL$.E!d
|8` }8vo)
} gj^)T_E_
PQaTS*0SXJ
//线程睡眠 ZqclmCi
public static void sleep(int nSecond) a6Vfd&
{ w%L4O;E]*{
try{ z^9oaoTl
Thread.sleep(nSecond); &M|rRd~*
} ?`RlYu
catch(Exception e) SdnnXEB7
{ gC$_yd6m
L
e.printStackTrace (); 8ZtJvk`
} ilL%
} )Xdq+$w.
<X*oW ".
//日志 !oH{=.w
public static void log(String sMsg) ?d Jd7+A
{ h,\{s_b
System.err.println(sMsg); `+w= p7ET
} wR_mJMk_
"M/c0`>C!i
kn:hxdZ
public static void log(int sMsg) i*$+>3Q-
{ Sh#N5kgD
System.err.println(sMsg); P5my]4|x
} |uy@v6
} JV_`E_!
+2MF#{ tS
#?)6^uTW
/* <lzC|>BG
**TestMethod.java j&