/* gvL*]U7
**SiteFileFetch.java 4Lz[bI
*/ jl>wvY||
package NetFox; fu-,<m{
import java.io.*; %*V r}@BA)
import java.net.*; ;Cjj_9e,:
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public class SiteFileFetch extends Thread { ,f<J4U:Y
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SiteInfoBean siteInfoBean = null; //文件信息Bean
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long[] nStartPos; //开始位置 a4Z e!l(
long[] nEndPos; //结束位置 ][YuJUK8
FileSplitterFetch[] fileSplitterFetch; //子线程对象 L>0Pur) [
long nFileLength; //文件长度 =EU;%f
boolean bFirst = true; //是否第一次取文件 !DHfw-1K
boolean bStop = false; //停止标志 H^vA}F`
File tmpFile; //文件下载的临时信息 +rhBC
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DataOutputStream output; //输出到文件的输出流 kjXwVGK=P<
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 73SH[f[g
public SiteFileFetch(SiteInfoBean bean) throws IOException {.DY\;Q
{ ^+k= ;nl
siteInfoBean = bean; bqaj~:}@
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); d<WNN1f
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 2]FRIy
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if(tmpFile.exists ()) tCPK_Wws?Z
{ "5?1S-Vl
bFirst = false; _j*I\
read_nPos(); xVN!w\0
} 3Wx\Liw,
else C@<gCM j,"
{ #7}YSfm^6
nStartPos = new long[bean.getNSplitter()]; xr7M#n
nEndPos = new long[bean.getNSplitter()]; a`?Vc}&
}
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} `O;4b#!g
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public void run() Q}a(vlZ
{ Z%=A[`5]
//获得文件长度 5w+&plIJ
//分割文件 c~OvoTF,
//实例FileSplitterFetch @D `j
//启动FileSplitterFetch线程 PSX
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//等待子线程返回 nV`W0r(f'
try{ y9=<q%Kc-
if(bFirst) K8_\U0 K
{ _}T )\o
nFileLength = getFileSize(); |x>5 T}
if(nFileLength == -1) ,|,kU0xXz
{ ^L8:..+:
System.err.println("File Length is not known!"); `U>2H4P
} (v?
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else if(nFileLength == -2) v"o@q2f_
{ 3preBs#i
System.err.println("File is not access!"); BMV\@Sg
} |sP0z !)b
else 6BM$u v4
{ S1m5z,G
for(int i=0;i<nStartPos.length;i++) s#")hMJQ
{ D(&WEmm\B
nStartPos = (long)(i*(nFileLength/nStartPos.length)); F~bDg tN3
} Kc#1H|'2N
for(int i=0;i<nEndPos.length-1;i++) `R -?+76?
{ U3 UA
nEndPos = nStartPos[i+1]; '#.D`9YI<
} tDfHO1pS
nEndPos[nEndPos.length-1] = nFileLength; 475g-t2"@
} ya,-Lt
} h^''ue"
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//启动子线程 J+N
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fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; N|ZGc{?
for(int i=0;i<nStartPos.length;i++) eV}H
{ 6\-u:dvGI?
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Dk8@x8
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Kxz|0l
nStartPos,nEndPos,i); ~ tN/
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); P:3o}CB1I
fileSplitterFetch.start(); r}:U'zlC{
} -z
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// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), UFUEY/q
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); a0Fq$
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", -%{+\x2
nEndPos = " + nFileLength); 9U=6l]Np
// fileSplitterFetch[nPos.length-1].start(); rq}xuSFI
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//等待子线程结束 &F Yv4J
//int count = 0; eX!yIqAR
//是否结束while循环 Ae"|a_>fMI
boolean breakWhile = false; #uICHt3
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while(!bStop) &fU48n1Uh
{ "QD>:G;u
write_nPos(); s'IB{lJ9
Utility.sleep(500); !67xN?b
breakWhile = true; sb?!U"v.'
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for(int i=0;i<nStartPos.length;i++) HW#@e kh
{ :_,3")-v
if(!fileSplitterFetch.bDownOver) :C,}DyZy
{ -pQ?ybQ
breakWhile = false; -C!m#"PDW
break; giW9b_
} I
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} 1\)lD(J\C
if(breakWhile) Nei i$
break; _g,_G
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//count++; e+>$4Jq
//if(count>4) n1PvZ~^3
// siteStop(); yw89*:A6
} *m`x/_y+
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System.err.println("文件下载结束!"); \0 &$n
} q]SH'Wd
catch(Exception e){e.printStackTrace ();} Z$6B}cz<
} ];N/KHeZ
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|)*!&\Ch
//获得文件长度 hFhC&2HN
public long getFileSize() ,wv>G]v
{ hPCSAo!|
int nFileLength = -1; #MiO4zXgd
try{ C^,J6;'
URL url = new URL(siteInfoBean.getSSiteURL()); }ov>b2H#<
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); y6MkaHW[m
httpConnection.setRequestProperty("User-Agent","NetFox"); B+pLW/4l
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int responseCode=httpConnection.getResponseCode(); &h=f
if(responseCode>=400) fGe"1MfU
{ W2M[w_~QE
processErrorCode(responseCode); %dhrXK5
return -2; //-2 represent access is error 1'dZ?`O
} 5~E{bW$
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String sHeader; iQLP~Z>,T
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for(int i=1;;i++) ;<xPzf
{ 7_rDNK@e
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); u
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//Utility.log(in.readLine()); e:_[0#
sHeader=httpConnection.getHeaderFieldKey(i); mmCGIX
if(sHeader!=null) l Ttc#
{ C+mPl +}w
if(sHeader.equals("Content-Length")) D}-HWJQA3
{ $v"CQD
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ![MtJo5
break; :R$v7{1
} MiF(
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} 'A1y~x#2B
else N4{g[[ T
break; A.r.tf}:
} m2ph8KC
} O(_f&a
catch(IOException e){e.printStackTrace ();} fWF!% |L
catch(Exception e){e.printStackTrace ();} F*NHy.Y
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Utility.log(nFileLength); h96<9L
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return nFileLength; q 1u_r
} >N}+O<Fc
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//保存下载信息(文件指针位置) v`:!$U*
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private void write_nPos() .cmhi3o4
{ 2(Yt`3Go(
try{ '[HU!8F
output = new DataOutputStream(new FileOutputStream(tmpFile)); n:H
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output.writeInt(nStartPos.length); %z"$?Iv
for(int i=0;i<nStartPos.length;i++) kb~ 9/)~g
{ kY'C'9p
// output.writeLong(nPos); hl DU.k
output.writeLong(fileSplitterFetch.nStartPos); $d&7q5[
output.writeLong(fileSplitterFetch.nEndPos); 9,"gXsvx(
} &[yYgfsp
output.close(); >gn@NJ2 N
} 4]Gm4zO
catch(IOException e){e.printStackTrace ();} -;i:bE
catch(Exception e){e.printStackTrace ();} F>%,}Y~B:
} 2<V`
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//读取保存的下载信息(文件指针位置) W4h ]4X
private void read_nPos() Z hCjY
{ )_?H BTG
try{ UCo<ie\V
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); b8$%=Xp
int nCount = input.readInt(); 1WY$Vs
nStartPos = new long[nCount]; VwXR,(
nEndPos = new long[nCount]; 'l-VWqR-
for(int i=0;i<nStartPos.length;i++) m&s;zQ
{ gs~u8"B
nStartPos = input.readLong(); piIGSC
nEndPos = input.readLong(); (?.h<v1}
} EvA8<o
input.close(); " ;\EU4R
} +hH7|:JQ
catch(IOException e){e.printStackTrace ();} &@PAv5iNf
catch(Exception e){e.printStackTrace ();} A!$sOp
} j1ap,<\.k
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private void processErrorCode(int nErrorCode) DnF|wS
{ u =(.}
System.err.println("Error Code : " + nErrorCode); 4%<D\#
} u}?{1B!
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//停止文件下载 %fh-x(4v
public void siteStop() 5yroi@KT
{ (YYwn@NGj
bStop = true; Y)M-?|4
for(int i=0;i<nStartPos.length;i++) w7<4D,hk
fileSplitterFetch.splitterStop(); ZalL}?E
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} $! g~pV
} nyG 5sWMpe
//负责部分文件的抓取 q1/ mp){
**FileSplitterFetch.java ;Z,l};b
*/ 8PG&/"K
package NetFox; iX>)6)uJ
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=Q!V6+}nY^
import java.io.*; Jp~[Dm
import java.net.*; DuC_uNJ
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public class FileSplitterFetch extends Thread { 3b<;y%
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String sURL; //File URL eHyIFoaC/
long nStartPos; //File Snippet Start Position 1L3 $h0i
long nEndPos; //File Snippet End Position 7TZ,bD_
int nThreadID; //Thread's ID A5G@u}YS5
boolean bDownOver = false; //Downing is over 48mTL+*
boolean bStop = false; //Stop identical )Qo^Mz
FileAccessI fileAccessI = null; //File Access interface EDA6b]
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException (T.g""N~`
{ 3C#Sr6
this.sURL = sURL; T<mP.T,$!
this.nStartPos = nStart; (%{!TJg ZR
this.nEndPos = nEnd; 2(Nf$?U@0
nThreadID = id; hWr}Uui
fileAccessI = new FileAccessI(sName,nStartPos);//定位 m;u :_4
} s 8lfW6
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public void run() $,1KD3;+]
{ nA+gqY6 6|
while(nStartPos < nEndPos && !bStop) 1]7v3m
{ p4Xhs@.k
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try{ {=P}c:iW
URL url = new URL(sURL); iDlg>UYd
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); I"WmDC`1
httpConnection.setRequestProperty("User-Agent","NetFox"); kM(,8j
String sProperty = "bytes="+nStartPos+"-"; qK&h$;~*y
httpConnection.setRequestProperty("RANGE",sProperty); ^O3p:X4u
Utility.log(sProperty); |b|bL 7nx
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InputStream input = httpConnection.getInputStream(); u9ue>I/
//logResponseHead(httpConnection); PkF'#W%
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byte[] b = new byte[1024]; <\?dPRw2>
int nRead; z s[zB#
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) I$I',x5Z
{ [}"m4+
nStartPos += fileAccessI.write(b,0,nRead); XJ?zP=UK
//if(nThreadID == 1) (gUxS.zU
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); oX6()FR
} <A]
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6
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Utility.log("Thread " + nThreadID + " is over!"); ->&amPv
bDownOver = true; ztV%W6
//nPos = fileAccessI.write (b,0,nRead); Bvz&
p)(
} >]?!9@#IH
catch(Exception e){e.printStackTrace ();} u%nhQ%
} U5H5QW +
} ,<=_t{^
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//打印回应的头信息 [vcSt5R=
public void logResponseHead(HttpURLConnection con) 4,7W*mr3(
{ 7iH%1f
for(int i=1;;i++) #80r?,q
{ ^xF-IA#ZeB
String header=con.getHeaderFieldKey(i); OBZ:C!
if(header!=null) 42,K8
//responseHeaders.put(header,httpConnection.getHeaderField(header)); jGOE
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Utility.log(header+" : "+con.getHeaderField(header)); .\|}5J9W
else gqACIXR
break; a O(&<
} Zs}EGC~&
} ~{np G
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public void splitterStop() rJc=&'{&)N
{ `:EU~4s\
bStop = true; p|'Rm]&jb
} 2I1CKA:7g
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} _Wo(;'.
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L
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/* 8DZ
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**FileAccess.java (Ei} :6,}
*//文件访问(定位,写) jI,?*n<
package NetFox; hO4* X
import java.io.*; Xa/]}
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, @dhJ8/
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public class FileAccessI implements Serializable{ z]R)Bh
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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 -bQi4
RandomAccessFile oSavedFile; VyxX5Lrj
long nPos; n_46;lD
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public FileAccessI() throws IOException WEk3
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{ 3"iJ/Hc}9
this("",0); F]`_ak E
} x_.}C%
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public FileAccessI(String sName,long nPos) throws IOException :N
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{ Hrj@I?4
oSavedFile = new RandomAccessFile(sName,"rw"); [HSN*LXe
this.nPos = nPos; _XUDPC(*qz
oSavedFile.seek(nPos); zc%HBZ3p
} BZAF;j
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public synchronized int write(byte[] b,int nStart,int nLen) {
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{ <l"rn M%
int n = -1; \6K1Z!*;
try{ u13v@<HGc
oSavedFile.write(b,nStart,nLen); geEETb}+y
n = nLen; "c0Nv8_G
} QeipfK+me
catch(IOException e) PBp+(o-
{ QN OA66
e.printStackTrace (); E8PlGQ~z{d
} /faP@Q3kR
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return n; "IKbb7x
} -q}I;
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} _Q6` Wp6m
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/* b{hdEb
**SiteInfoBean.java _/)HAw?k
*/ \K(QE ~y'W
package NetFox; rz]M}!>k
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public class SiteInfoBean { (GXFPEH8
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private String sSiteURL; //Site's URL }ec3qZ@
private String sFilePath; //Saved File's Path 7/GL@H
private String sFileName; //Saved File's Name h$rk]UM/Q
private int nSplitter; //Count of Splited Downloading File 0rj50$~$]
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public SiteInfoBean() njg\y
{//nSplitter的缺省值为5 #5}v?
//default value of nSplitter is 5 QPJz~;V2
this("","","",5); +o^sm '$
} i :Sih"=
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) w^wh|'u^_@
{ LGPPyKNx
sSiteURL= sURL; kli)6R<
sFilePath = sPath; z{ MO~d9
sFileName = sName; ewORb
this.nSplitter = nSpiltter; 4oA9|}<FR
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} Yi+$g
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public String getSSiteURL() JPGEE1!B{b
{ ,R2;oF_
return sSiteURL; U t'r^
} ERZWK
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public void setSSiteURL(String value) ~;P>}|6Y
{ cOo@UU P
sSiteURL = value; ZtH{2j0
} _rj B.
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public String getSFilePath() f5dctDHP
{ M&~cU{9c
return sFilePath; >P[BwL]
} fZF.eRP'
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public void setSFilePath(String value) _l||69|.
{ {H[3[
sFilePath = value; hsZ}FLStJ
} PuoN<9 #
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A!.* eIV|
public String getSFileName() m0_B[dw
{ IM9P5?kJ
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return sFileName; X'XH-E
} EGIwqci:
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public void setSFileName(String value) y&{ Z"+B5
{ nk^-+olm
sFileName = value; z }f;_NX
} &j_:VP
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public int getNSplitter() nps"nggk
{ tF=Y3W+L
return nSplitter; ^":Dk5gl
} FST}:*dOe5
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public void setNSplitter(int nCount) t?404
{ U)y~{E~c34
nSplitter = nCount; ?~#{3b
} I!uGI
} ;?'=*+'>
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/* AiE\PMF~{P
**Utility.java <"rckPv_H
*/ h<ULp&g
package NetFox; sg!*%*XQ
jYi{[**
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public class Utility { 1[Ffl^\ARp
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{po f=G
public Utility() zA?]AL(+YW
{ q\gvX
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} ^S'tMT_
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//线程睡眠 |L"!^Y#=D
public static void sleep(int nSecond) 999E0A$dkv
{ b 7%O[
try{ b!ea(D!:
Thread.sleep(nSecond); r=3knCEWK
} j/9Uf|z-_
catch(Exception e) u/8urxpy
{ lC&B4zec
e.printStackTrace (); Oor&1
} =z$XqT.'
} Qy+&N*k>
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//日志 ;Pi-H,1b
public static void log(String sMsg) 30Z RKrW"~
{ 8Qg,UX
System.err.println(sMsg); )|@ H#kv?
} [# '38
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public static void log(int sMsg) [Nn ?:5"
{ +#c3Y;JP
System.err.println(sMsg); *Tt*\ O
} \|}dlG
} `=h`:`
_@47h86Q
utvZ<zz`
/* "x*5g*k
**TestMethod.java 5z>kz/uxW
*/ k'K&GF1B
package NetFox; '`*{ig
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public class TestMethod { ?5<