/* 98| v.d
**SiteFileFetch.java CB,2BTtRE
*/ $aB`A$'hK
package NetFox; oM^vJ3
import java.io.*; Q4*{+$A
import java.net.*; &/2+'wCp5
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public class SiteFileFetch extends Thread { 2L[!~h2
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SiteInfoBean siteInfoBean = null; //文件信息Bean auX(d -m
long[] nStartPos; //开始位置 bA2[=6
long[] nEndPos; //结束位置 PhV/WjCZ
FileSplitterFetch[] fileSplitterFetch; //子线程对象 X8}\m%gCU
long nFileLength; //文件长度 *GY8#Az
boolean bFirst = true; //是否第一次取文件 =Ti@Y
boolean bStop = false; //停止标志 z_ '!?K{
File tmpFile; //文件下载的临时信息 t^>P,%$
DataOutputStream output; //输出到文件的输出流 V2AsZc0U(
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) \,n
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public SiteFileFetch(SiteInfoBean bean) throws IOException EE | c@M^
{ ;$1x_
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siteInfoBean = bean; 2A =Y
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); X[dH*PV
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ^!i4d))
if(tmpFile.exists ()) -{J0~1'#-
{ ?~T(Cue>
bFirst = false; +4Wl
read_nPos(); m8x?`Gw~jw
} %K8YZc(&
else t6`(9o@}
{ 0H.bRk/P+
nStartPos = new long[bean.getNSplitter()]; kka{u[ruA
nEndPos = new long[bean.getNSplitter()]; $;}@2U
} 0-aaLC~Z>
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} hR:i!
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public void run() +t1+1Zv
{ QmGK!
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//获得文件长度 \o3s&{+y,
//分割文件 l-20X{$m:
//实例FileSplitterFetch "X._:||8
//启动FileSplitterFetch线程 U(x$&um(l
//等待子线程返回 zFipuG02
try{ 8 $H\b &u
if(bFirst) ]]`[tVaFr
{ Z,\(bW
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nFileLength = getFileSize(); RhT:]
if(nFileLength == -1) =h=-&DSA
{ `1Md1e:J
System.err.println("File Length is not known!"); >ifys)wg>
} zVe,HKF/
else if(nFileLength == -2) &U=_:]/
{ #nft{AN
System.err.println("File is not access!"); hCc%d$wVk
} x*tCm8`{
else
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{ =w8 0y'
for(int i=0;i<nStartPos.length;i++) lA4J#
{ 38l:Y"
nStartPos = (long)(i*(nFileLength/nStartPos.length)); xiQc\k$
} "?<`]WG\
for(int i=0;i<nEndPos.length-1;i++) /#"9!8%V
{ >b#CR/^z
nEndPos = nStartPos[i+1]; X}h}3+V
} UUtSme
nEndPos[nEndPos.length-1] = nFileLength; .wWf#bB
} qC& xuu|
} 4DP<)KX
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//启动子线程 FEopNDy@y
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; n>:e8KVM;
for(int i=0;i<nStartPos.length;i++) qPUACuF'
{ ;Z;` BGZJ
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), cFJZ|Ld
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Bd;EI)JT
nStartPos,nEndPos,i); yDe*-N\'W
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); L"?4}U:
fileSplitterFetch.start(); L8zMzm=-
} JJM!pD\ h
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 0|0IIgy
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ,m7Z w_.
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 9!2$?xqym
nEndPos = " + nFileLength); -sle7 k
// fileSplitterFetch[nPos.length-1].start(); zH~g5xgh
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6"rS?>W/mO
//等待子线程结束 FcOrA3tt
//int count = 0; |\"%Dy[m
//是否结束while循环 i*09m^r
boolean breakWhile = false; \Km+>G
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while(!bStop) j
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{ kZ:~m1dd
write_nPos(); KO}TCa
Utility.sleep(500); -W})<{End
breakWhile = true; #a8i($k{e
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for(int i=0;i<nStartPos.length;i++) ;t@^Z_z,CR
{ d)$seZB
if(!fileSplitterFetch.bDownOver) %F;uW[4r
{ w#bdb;
breakWhile = false; (~b0-3s
break; Na.e1A&?j
} :4"b(L
} #X5Tt ;
if(breakWhile) /wHfc[b>
break; MpIP)bdq7
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//count++; +J}h
//if(count>4)
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// siteStop(); (1Jc-`
} ^c sOXP=Yp
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System.err.println("文件下载结束!"); zfGr1;
} S8]YS@@D
catch(Exception e){e.printStackTrace ();} cW^u4%f't'
} FvBnmYnW
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//获得文件长度 H<`7){iG
public long getFileSize() )VxC v
{ |c,'0V,"cH
int nFileLength = -1; ob(~4H-
try{ 3HX-lg`0
URL url = new URL(siteInfoBean.getSSiteURL()); Vvl8P|x.<
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); I{u+=0^Y
httpConnection.setRequestProperty("User-Agent","NetFox"); L0xh?B
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int responseCode=httpConnection.getResponseCode(); NUX2{8gs
if(responseCode>=400) xa%2w]
{ +r__>V,
processErrorCode(responseCode); rJcZ a#
return -2; //-2 represent access is error *3!ixDX[r
} x*F_XE1#M
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String sHeader; 0kld77tn
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for(int i=1;;i++) !X/O1PM|
{ --|L?-2k,
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); A ]~%<=b
//Utility.log(in.readLine()); ~C ;gEE-
sHeader=httpConnection.getHeaderFieldKey(i); v@]\
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if(sHeader!=null) r1Cq8vD*m
{ j2,w1f}T
if(sHeader.equals("Content-Length")) YU%U
{ ^o6&|q
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 9TOqA4
break; FKu^{'Y6E0
} V']1j
} }VXZM7@u
else `}&}2k
break; LDq(WPI1#
} nM&UdKf3
} )u(Dq u\t
catch(IOException e){e.printStackTrace ();} bmGtYv
catch(Exception e){e.printStackTrace ();} GxcW^{;
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Utility.log(nFileLength); B"fKv0
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return nFileLength; 91j.%#[v'
} t_ZWd#x+;
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//保存下载信息(文件指针位置) F6 c1YI[
private void write_nPos() 8&KqrA86
{ 8n)3'ok
try{ pj9s=}1 '
output = new DataOutputStream(new FileOutputStream(tmpFile)); ,O]AB
output.writeInt(nStartPos.length); ?;)F_aHp
for(int i=0;i<nStartPos.length;i++) lC(g&(\{
{ QF`o%mI
// output.writeLong(nPos); uNRT@@oCq
output.writeLong(fileSplitterFetch.nStartPos); / :@X<
output.writeLong(fileSplitterFetch.nEndPos); Luu.p<
} #sp8 !8|y
output.close(); 2XGbqZj
} i5^U1K\M
catch(IOException e){e.printStackTrace ();} W8{zV_TBm
catch(Exception e){e.printStackTrace ();} 0ud>oh4WPR
} H@hHEzO
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//读取保存的下载信息(文件指针位置) #^oF^!
private void read_nPos() @Tg +Kt
{ eMV@er|
try{ 8|iMD1
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); tM;S
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int nCount = input.readInt(); P _3U4J
nStartPos = new long[nCount]; $y&1.caMa
nEndPos = new long[nCount]; [E/}-m6g
for(int i=0;i<nStartPos.length;i++)
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{ AilfeHG
nStartPos = input.readLong(); $*i"rlJC
nEndPos = input.readLong(); _ 0Ced&i
} |Zrkk>GW:
input.close(); R~&i8n.
} d8Kxtg
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catch(IOException e){e.printStackTrace ();} =C.WM*= '
catch(Exception e){e.printStackTrace ();}
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} 5.e.
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private void processErrorCode(int nErrorCode) v<U +&D{
{ M~&X?/8
System.err.println("Error Code : " + nErrorCode); >E3 lY/[
} <<[hZ$.
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//停止文件下载 r@m2foaO
public void siteStop() 2r|!:^'?W
{ wk"zpI7L
bStop = true; k_<8SG+`
for(int i=0;i<nStartPos.length;i++) #XlE_XD
fileSplitterFetch.splitterStop(); `2Oh0{x0*O
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} fCxF3m(O
} *PVv=SU
//负责部分文件的抓取 +w
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**FileSplitterFetch.java d(-$ {
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*/ |6.1uRF E2
package NetFox; :'LG%E:b
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import java.io.*; IN%04~=H
import java.net.*; ;c_pa0L
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public class FileSplitterFetch extends Thread { )4P5i
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String sURL; //File URL ].eY]o}=
long nStartPos; //File Snippet Start Position 1#3 Qa{i
long nEndPos; //File Snippet End Position BsX#
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int nThreadID; //Thread's ID SLze) ?.
boolean bDownOver = false; //Downing is over Lx"a #rZ
boolean bStop = false; //Stop identical 4{r_EV[(
FileAccessI fileAccessI = null; //File Access interface q;V1fogqI)
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException !F|iL
{ !B3lsXLSY
this.sURL = sURL; hoQ?8}r:
this.nStartPos = nStart; c.\J_^
this.nEndPos = nEnd; fii\&p7z
nThreadID = id;
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fileAccessI = new FileAccessI(sName,nStartPos);//定位 *I}_B\kY
} D@ji1$K
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public void run() UT9=S21
{ j;k(AM<
while(nStartPos < nEndPos && !bStop) 92k}ON
{ -~HlME*~f
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try{ DjT ekn
URL url = new URL(sURL); D=fB&7%@
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); dIo|i,-
httpConnection.setRequestProperty("User-Agent","NetFox"); nAp7X-t
String sProperty = "bytes="+nStartPos+"-"; N3};M~\
httpConnection.setRequestProperty("RANGE",sProperty); Mlpq2I_x
Utility.log(sProperty); 2rw<]Ce
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InputStream input = httpConnection.getInputStream(); pP'-}%
//logResponseHead(httpConnection); z^f-MgWG
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byte[] b = new byte[1024]; a`w)awb
int nRead; Kup-O
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while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) >Q~"/-bN)
{ !HXdUAKu
nStartPos += fileAccessI.write(b,0,nRead); +M\*C#
//if(nThreadID == 1) L#e|t0'#
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); BX),U
} K6,5C0
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7 #,+Q(2
Utility.log("Thread " + nThreadID + " is over!"); (WW,]#^
bDownOver = true; "gCSbMq(Vq
//nPos = fileAccessI.write (b,0,nRead); S)"5X)mq
} |7zm!^t$
catch(Exception e){e.printStackTrace ();} ]sjOn?YA+
} 2="C6
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} 'FBvAk6
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//打印回应的头信息 aAko-,URC
public void logResponseHead(HttpURLConnection con) !qH=l-7A
{ MjU>qx::
for(int i=1;;i++) {kJ[) 7
{
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String header=con.getHeaderFieldKey(i); ftq~AF
if(header!=null) 'q[V*4g
//responseHeaders.put(header,httpConnection.getHeaderField(header)); \]J"e%
Utility.log(header+" : "+con.getHeaderField(header)); pAmTwe
else U
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break; e7L;{+XI
} LFSOHJj
} su=.4JcK
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public void splitterStop() LM _4.J
{ j.CC.[$g
bStop = true; YA^9, q6u?
} CSU> nIE0
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} HIhoYSwB
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/* S0=BfkHi.
**FileAccess.java *OF7{^~&
*//文件访问(定位,写) 4r(rWlM
package NetFox; l}AB):<Z
import java.io.*; ^:-%tpB#!
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public class FileAccessI implements Serializable{ kd\yHI9A
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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 !s)2H/KM 8
RandomAccessFile oSavedFile; $]81 s`
long nPos; &8&WY1cU
*pasI.2s#
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public FileAccessI() throws IOException 1 *-58N*
{ n6o}$]H
this("",0); 71 /6=aq>n
} <E\BKC%M
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public FileAccessI(String sName,long nPos) throws IOException |E7]69=P
{ ~`N|sI,
oSavedFile = new RandomAccessFile(sName,"rw"); G8oQSo;D
this.nPos = nPos; \+Cp<Hv+
oSavedFile.seek(nPos); xDlC]loi7
} :,VyOmf
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public synchronized int write(byte[] b,int nStart,int nLen) eB]ZnJ2^=
{ E0oJ|My
int n = -1; Hh@mIusj
try{ ac&tpvij
oSavedFile.write(b,nStart,nLen); o!H"~5Trv!
n = nLen; E>V8|Hz;
} 5!cplx=<
catch(IOException e) #-VKk
{ N]=.I
e.printStackTrace (); 0^[$0]Mt[
} fg1 zT~
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return n; uC;@Yi8
} ss2:8up 99
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} %Bo Jt-v
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/* TM RXl.1
**SiteInfoBean.java G![1+2p:Tq
*/ \m.{^Xd~
package NetFox; 0bd.ess
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public class SiteInfoBean { 1IsR}uLh
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private String sSiteURL; //Site's URL >%[W2L\'
private String sFilePath; //Saved File's Path @O(\TIg
private String sFileName; //Saved File's Name ``\H'^{B
private int nSplitter; //Count of Splited Downloading File 7:;V[/
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public SiteInfoBean() v]1rH$
{//nSplitter的缺省值为5 6Rt pB\hq
//default value of nSplitter is 5 '\;tmD"N5#
this("","","",5); 9(I4x]`
} [gE2lfaEy
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) %$}iM<
{ SVHtv0Nx
sSiteURL= sURL; a&<<X:$Hy
sFilePath = sPath; s6
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sFileName = sName; lDA%M3(p
this.nSplitter = nSpiltter;
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} lV1|\~?4
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public String getSSiteURL() $pKS['J0
{ BZBsE
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return sSiteURL; WV% KoM,%
} &0"`\~lA
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public void setSSiteURL(String value) )2A4vU-IR.
{ oa4}GNH
sSiteURL = value; r5"/EMieh
} E0|aI4S4
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public String getSFilePath() ;CrA
{ A4^+p0@
return sFilePath; 3m^BYr*y^
} 'ZDclz9}
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public void setSFilePath(String value) VuY.})+J:
{ kmS8>O
sFilePath = value; O<hHo]jLF
} F~Li.qF
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public String getSFileName() t&xx-4
{ C/bttd
return sFileName; P8jK
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} fin15k
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public void setSFileName(String value) cm]]9z_<
{ gr;M
sFileName = value; ,jn?s^X6Dj
} L`#+ZLo
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public int getNSplitter() A=$oYBB
{ W)#`4a^xj7
return nSplitter; 5c"kLq6r
} E;qwoTmul
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public void setNSplitter(int nCount) /\#5\dHj
{ I ?>#neHc6
nSplitter = nCount; <%z/6I
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} B4}XK=)
} q
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/* p{rS -`I
**Utility.java xeI{i{8
*/ "YL-!P
package NetFox; :3B\,inJ
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public class Utility { a%dx\&K
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public Utility() AJT0)FCpR
{ v\ Ljm,+
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} Ro<kp8
aW"!bAdx`,
//线程睡眠 zjA/Z(
public static void sleep(int nSecond) c
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{ jO55<s94
try{ mV,R0olF
Thread.sleep(nSecond); ^aXBt
} X2cR+Ha0
catch(Exception e) akQH+j
{ rg,63r
e.printStackTrace (); vNC0M:p,
} ]D%k)<YK
} T Rw6$CR
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//日志 *K|aK p}
public static void log(String sMsg) CWp1)%0=
{ W[Bu&?h$
System.err.println(sMsg); %K"%Qm=Tl
} pr txE&-
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public static void log(int sMsg) KeB4Pae|V
{ Db(_T8sU
System.err.println(sMsg); /BM1AV{s6
} `fZD%o3l
} Wq(l :W'
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/* T3./V0]\I
**TestMethod.java xXZKj
*/ %i8>w:@NW
package NetFox; Jv<