/* LZDJ\"a-
**SiteFileFetch.java Y=D\
*/ yof8L WXx
package NetFox; Nxr\Yey
import java.io.*; =wlPm5
import java.net.*; "V`5 $ur
nd }Z[)
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public class SiteFileFetch extends Thread { _R}yZ=di
1 %8JMq\
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SiteInfoBean siteInfoBean = null; //文件信息Bean hC?rHw
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long[] nStartPos; //开始位置 %Ix2NdC
long[] nEndPos; //结束位置 EMzJyGt7
FileSplitterFetch[] fileSplitterFetch; //子线程对象 [l}H%S
long nFileLength; //文件长度 $f=6>Kn|^]
boolean bFirst = true; //是否第一次取文件 >D%
boolean bStop = false; //停止标志 ! ~tf0aY
File tmpFile; //文件下载的临时信息 Q5HSik4
DataOutputStream output; //输出到文件的输出流 \_x~lRqJJ
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) TE6]4E*
public SiteFileFetch(SiteInfoBean bean) throws IOException -""(>$b2
{ Py#TXzEcC
siteInfoBean = bean; #gVWLm<
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); SqZ .}s
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); &gcZ4gpH
if(tmpFile.exists ()) 4 %V9
{ gv){&=9/
bFirst = false; _'l"Dk
read_nPos(); Ol;DJV
} xnHB
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else 5\}E4y
{ qRHT~ta-?
nStartPos = new long[bean.getNSplitter()]; 2I283%xr
nEndPos = new long[bean.getNSplitter()]; QD-`jV3
} Lngf,Of.e
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} k*D8IB
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public void run() +J#8wh
{ TfHL'u9B
//获得文件长度 4s@Tn>%SP
//分割文件 'Fql;&U
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//实例FileSplitterFetch *c
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//启动FileSplitterFetch线程 /vC!__K9:
//等待子线程返回 }X. Fm'`
try{ F\^\,hy
if(bFirst) +ViL"
{ Q\>mg*79
nFileLength = getFileSize(); X#HH7V>
if(nFileLength == -1) lOM8%{.'_x
{ eAStpG"*
System.err.println("File Length is not known!"); .osG"cS
}
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else if(nFileLength == -2) 8`6G_:&X
{ 2A:&Cqo
System.err.println("File is not access!"); WNt':w^_
} j{D tjV8
else m&s>Sn+
{ )+ 'r-AF*
for(int i=0;i<nStartPos.length;i++) 7 IJn9 b
{ +d7Arg!m
nStartPos = (long)(i*(nFileLength/nStartPos.length)); u%lUi2P2E
} kP'm$+1or
for(int i=0;i<nEndPos.length-1;i++) UD.ZnE{"
{ efE=5%O
nEndPos = nStartPos[i+1]; ":q+"*fy
} T8&eaAoo
nEndPos[nEndPos.length-1] = nFileLength; 97~>gFU77#
} TZGk[u^*
} jFip-=T{4
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//启动子线程 hA;Ai:8
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; c,O;B_}M]
for(int i=0;i<nStartPos.length;i++) +TX4,"
{ yFS{8yrRUU
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), RR'sW@
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), #c":y5:
nStartPos,nEndPos,i); =:!>0~
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); __zHe-.m
fileSplitterFetch.start(); 9C=*>I27?
} _#MKp H
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), /DP0K
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 8_o~0lb
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", |5ge4,}0
nEndPos = " + nFileLength); i=1crJ:
// fileSplitterFetch[nPos.length-1].start(); EJRkFn8XG'
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oz]&=>$1I
//等待子线程结束 \
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//int count = 0; D[}^G5
//是否结束while循环 f/s" 2r
boolean breakWhile = false; UR9\g(
,7k-LAA
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while(!bStop) NqGSoOjIO2
{ O&&_)
write_nPos(); ~<~
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Utility.sleep(500); 74N3wi5B
breakWhile = true; Z`86YYGK
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for(int i=0;i<nStartPos.length;i++) U=7nz|
{ z@w}+fYO
if(!fileSplitterFetch.bDownOver) La3rX
{ k{=dV
breakWhile = false; +S[3HX7H
break; Lis>Qr
} 13w(Tf
} 4T;<`{]
if(breakWhile) #
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break; M] +.xo+A
bM5o-U#^ C
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//count++; U]w"T{;@.)
//if(count>4) wW/q#kc
// siteStop(); X/90S2=P
} O|)b$H_
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"^!y>]j#A
System.err.println("文件下载结束!"); *,%$l+\h
} u`.)O2)xU
catch(Exception e){e.printStackTrace ();} uv<_.Jq]
} zx,9x*g
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//获得文件长度 i;s;:{cn
public long getFileSize() Pr(@&:v:
{ m(}}%VeR"z
int nFileLength = -1; 2
try{ &6
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URL url = new URL(siteInfoBean.getSSiteURL()); h_+
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); PB7-`uz
httpConnection.setRequestProperty("User-Agent","NetFox"); j;7E+Yp
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int responseCode=httpConnection.getResponseCode(); gzqp=I[%
if(responseCode>=400) Wz"H.hf
{ Kop(+]Q&n
processErrorCode(responseCode); -zn_d]NV
return -2; //-2 represent access is error 5V\",PAW
} JAP(J~
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String sHeader; ZTz07Jt
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for(int i=1;;i++) 4OQ,|Wm4G
{ h.F=Fhx/1
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); k4hk*
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//Utility.log(in.readLine()); MpGG}J[y
sHeader=httpConnection.getHeaderFieldKey(i); j7Ts&;`[*
if(sHeader!=null) rUmP_
{ S*|/txE'~Y
if(sHeader.equals("Content-Length")) \!BVf@>p%
{ .UNV &R0
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); !U>WAD9
break; /*k_`3L
} jl&Nphp
} wT6zeEV~*
else <F;+A{M)
break; `]XI Q\ *
} Iv*\8?07)
} _oCNrjt9
catch(IOException e){e.printStackTrace ();} {\%I;2X
catch(Exception e){e.printStackTrace ();} XD|g G
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Utility.log(nFileLength); !|i #g$
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return nFileLength; ^]D1':
} \`xlD&F@U
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//保存下载信息(文件指针位置) w4Df?)Z
private void write_nPos() G$MEVfd"
{ `o295eiY(b
try{ la_c:#ho
output = new DataOutputStream(new FileOutputStream(tmpFile)); -~lq <M
output.writeInt(nStartPos.length); xk%
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for(int i=0;i<nStartPos.length;i++) 25-h5$s
{ 5TB6QLPEwY
// output.writeLong(nPos); 0kOwA%m
output.writeLong(fileSplitterFetch.nStartPos); ;l0dx$w
output.writeLong(fileSplitterFetch.nEndPos); Z%:>nDZV
} S6JXi>n
output.close(); KNd<8{'.
} L/exR6M7
catch(IOException e){e.printStackTrace ();} /\h*v!:
catch(Exception e){e.printStackTrace ();} ?_^{9q%9
} Q
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//读取保存的下载信息(文件指针位置) ""a$[[ %WC
private void read_nPos() #0[^jJ3J
{ wN4#j}C
try{ ]lBCK
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); dp'[I:X
int nCount = input.readInt(); ceJi|`F
nStartPos = new long[nCount]; ?X6}+
nEndPos = new long[nCount]; ]4en|Aq
for(int i=0;i<nStartPos.length;i++) n"6L\u
{ XDPgl=~
nStartPos = input.readLong(); (H !iK,R
nEndPos = input.readLong(); l[ $bn!_e
} &
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input.close(); 1VlU'qY
} L}Y.xi
catch(IOException e){e.printStackTrace ();} jJNCNH*0
catch(Exception e){e.printStackTrace ();} y"q>}5
} _7<{+Zzm
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private void processErrorCode(int nErrorCode) %}VH5s9\
{ D4[t^G;J
System.err.println("Error Code : " + nErrorCode); {ptHk<K:)
} ,Q7;(&x~
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//停止文件下载 /0XMQy
public void siteStop() Tgr,1)T
{ ()l3X.t,$
bStop = true; ~BmA!BZV`
for(int i=0;i<nStartPos.length;i++) ji1vLu4|t
fileSplitterFetch.splitterStop(); yW=+6@A4
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} A+0-pF2D
} r.\L@Y<
//负责部分文件的抓取 K8&;B)VT>
**FileSplitterFetch.java % (y{Sca
*/ #6<1
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package NetFox; OpEH4X.Z
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import java.io.*; HT .*r6Y>g
import java.net.*; `IUn{I
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public class FileSplitterFetch extends Thread { Z%qtAPd
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String sURL; //File URL ?zf3Fn2y
long nStartPos; //File Snippet Start Position zR^Gy"
long nEndPos; //File Snippet End Position i9DD)Y<
int nThreadID; //Thread's ID M>]A!W=
boolean bDownOver = false; //Downing is over
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boolean bStop = false; //Stop identical sE6>JaH
FileAccessI fileAccessI = null; //File Access interface aLGq<6Ja
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException c
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{ jRS{7rx%MH
this.sURL = sURL; `Zm6e!dH-
this.nStartPos = nStart; WI/tWj0
this.nEndPos = nEnd; Ec@n<KK#
nThreadID = id; 2+
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fileAccessI = new FileAccessI(sName,nStartPos);//定位 P.,U>m
} 6p)AQTh>
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public void run() a,c!#iyl3
{ 9_?xAJ
while(nStartPos < nEndPos && !bStop) WK>|IgK
{ ^Fco'nlM
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try{ -V|"T+U
URL url = new URL(sURL); F^75y?
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 0
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httpConnection.setRequestProperty("User-Agent","NetFox"); &xQM!f
String sProperty = "bytes="+nStartPos+"-"; 3c=kYcj
httpConnection.setRequestProperty("RANGE",sProperty); 00QJ596
Utility.log(sProperty); 05`"U#`:
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InputStream input = httpConnection.getInputStream(); bx8](cT_
//logResponseHead(httpConnection); 4VwF\
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byte[] b = new byte[1024]; pa[/6(
int nRead; ~P1~:AT
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) vA1YyaB
{ -)`_w^Ox
nStartPos += fileAccessI.write(b,0,nRead); 'BjTo*TB]Z
//if(nThreadID == 1) ,twx4r^
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); esqmj#G
} @Nek;xJ
/*mF:40M;
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Utility.log("Thread " + nThreadID + " is over!"); "<!U
bDownOver = true; aixX/se
//nPos = fileAccessI.write (b,0,nRead); *9aJZWf>V
} $v|W2k
catch(Exception e){e.printStackTrace ();} ^Co$X+
} >X*tMhcb
} 7MKX`S
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//打印回应的头信息 ? nd:
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public void logResponseHead(HttpURLConnection con) hy5[
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{ 4+RR`I8$Ge
for(int i=1;;i++) @%]A,\
{ 4I$Y(E}
String header=con.getHeaderFieldKey(i); u5(8k_7
if(header!=null) <xOX+D
//responseHeaders.put(header,httpConnection.getHeaderField(header)); -zR<m
Utility.log(header+" : "+con.getHeaderField(header)); +WH\,E
else x#>V50E
break; _v,0"_"
} ')y2W1
} ]:|B).
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public void splitterStop() &|/_"*uM
{ L8VOiK=,
bStop = true; ?h= n5}Y
} v`HER6
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} uzy5rA==
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pM?;QG;jA
/* $Habhw
**FileAccess.java jx: IK
*//文件访问(定位,写) q<JCgO-F<
package NetFox; $TI^8 3
import java.io.*; i+Z)`
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public class FileAccessI implements Serializable{ p)y5[HX
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//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 [FO4x`
RandomAccessFile oSavedFile; c|&3e84U
long nPos; u "[f\l
(%my:\>l
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public FileAccessI() throws IOException Kxr@!m"
{ x'GB#svi
this("",0); !+GYu;_
} T8XrmR&?PX
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public FileAccessI(String sName,long nPos) throws IOException U'fP
{ {q-&!l|
oSavedFile = new RandomAccessFile(sName,"rw"); J2bvHxb Rd
this.nPos = nPos; j#l=%H
oSavedFile.seek(nPos); t#k]K]
} z*\_+u~u
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!}(B=-
public synchronized int write(byte[] b,int nStart,int nLen) 9`tK9
{
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int n = -1; !J$r|IX5
try{ FlqGexY5
oSavedFile.write(b,nStart,nLen); @!sK@&ow@%
n = nLen; d54iZ`
} @(t3<g
catch(IOException e) =+zDE0Qs
{ smP4KC"I(d
e.printStackTrace (); VmS_(bM
} |7qt/z
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return n; yPN '@{ 5#
} ,2@o`R.27
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} &d_^k.%y
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/* LP2~UVq
**SiteInfoBean.java +jm,nM9
*/ \TQZZ_Z
package NetFox; lSxb:$g
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public class SiteInfoBean { u#0snw~)/
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private String sSiteURL; //Site's URL BEdCA]T
private String sFilePath; //Saved File's Path O'<V[Y}6
private String sFileName; //Saved File's Name O)'CU1vMb
private int nSplitter; //Count of Splited Downloading File )(iv#;ByL
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public SiteInfoBean() ~tDYo)hH8
{//nSplitter的缺省值为5
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//default value of nSplitter is 5 @!8aZB3odt
this("","","",5); TEtmmp0OD
} 8q2a8I9g
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) eg0_ <
{ iq#{*:1
sSiteURL= sURL; "+HJ/8Dd1
sFilePath = sPath; afm\Iv[*
sFileName = sName; LEb$Fd
this.nSplitter = nSpiltter; s,z~qL6&
19!?oeOU
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} ACszx\[K3
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public String getSSiteURL() ]C_+u_9
{ BU`X_Z1)
return sSiteURL; -f+#j=FX
} JcAsrtrG]
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public void setSSiteURL(String value) R9XU 7_3B
{ t{md&k4
sSiteURL = value; TW|K.t@5#H
} VkQ@c;C
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public String getSFilePath() D"7}&Ry:
{ 55S s%$k@
return sFilePath; 9*qwXU_aV
} C6!F6Stn]g
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public void setSFilePath(String value) ?cU,%<r
{ d:kB Zrq
sFilePath = value; AwM`[`ReE
} `7"="T~ *
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public String getSFileName() fzsy<Vl",
{ 9"~ FKMN
return sFileName; Q,U0xGGz
} DAn2Pqf
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public void setSFileName(String value) V_7\VKR
{ P9v(5Z00|d
sFileName = value; }b_Ob
} #QNN;&L]R
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public int getNSplitter() H& |/|\8F
{ \ .xS
return nSplitter; v~$V
} U]PB)
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public void setNSplitter(int nCount) ^<I(
{ >pq~ &)^u
nSplitter = nCount; @16GF!.
} rN0<y4)!
} sJ6.3=
c
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/* (bwD:G9
**Utility.java B[b>T=
*/ +kSu{Tc
package NetFox; (_FU3ZW!
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public class Utility { xo>0j#
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public Utility() yD+4YD
{ C`5'5/-.
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} l=?e0d>O
(< +A w7
//线程睡眠 (Pc>D';{S
public static void sleep(int nSecond) Hw \of
{ $/wm k7T
try{ e]4$H.dP
Thread.sleep(nSecond); c'oiW)8;A
} $ XjijD9R
catch(Exception e) \n<!
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{ VLuHuih
e.printStackTrace (); erH,EE^-x<
} bRAD_
} 4'QX1p
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//日志 VF`!ks
public static void log(String sMsg) v,w af`)J
{ Giyh( DL
System.err.println(sMsg); {&5lZ<nu8A
} m8sd2&4
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>Hf{Mx{<
public static void log(int sMsg) \jfK']P/H
{ (/:m*x*6
System.err.println(sMsg); 'Lu<2=a~
} eiMP:
} *yBVZD|?H
%8*:VR
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/* D Y2*B"^
**TestMethod.java /VYT](
*/ "&6vFm r
package NetFox; ~ZKJ:&f