new InputStreamReader(System.in));
String s;
while (bufferedReader.read() != -1) {
System.out.println("input something:");
s = bufferedReader.readLine();
System.out.println("input is: " + s);
}
}
======================================
java io 鏈変袱縐嶇被鍨嬬殑璇誨啓鏂規(guī)硶銆?
涓縐嶆槸浠ュ瓧鑺備負鍗曚綅璇誨啓鐨勶紝InputStream銆丱utputStream(interface) 涓嬮潰鏈夊緢澶氱被鍍廎ileInputStream銆丳ipedInputStream 絳夌殕緇ф壙浜嗕笂榪版帴鍙ｃ?
鍙﹀涓縐嶅氨鏄綘涓婇潰鎻愬埌鐨勪互unicode涓哄崟浣嶈繘琛岃鍐欑殑鏂規(guī)硶銆? 琛ㄧ幇涓? Reader銆乄riter銆佹帴鍙ｏ紝鍍廈ufferedReader 灝辯戶鎵夸簡Reader鎺ュ彛銆?
BufferedReader ****===> 鍦ㄨ鍙栫殑鏃跺欙紝浼氬厛寮杈熶竴涓紦鍐插尯錛屾妸榪欎簺鏁版嵁璇誨埌緙撳啿鍖猴紝絳夊埌婊′簡浠ュ悗錛屽氨鐩存帴鎷垮嚭鏉ャ?
鑷充簬InputStreamReader錛?***===> An InputStreamReader is a bridge from byte streams to character streams: It reads bytes and translates them into characters according to a specified character encoding.閫氳繃榪欎釜綾誨彲浠ユ妸榪欎袱縐嶆柟寮忚鍙栧嚭鏉ョ殑淇℃伅鐩鎬簰鍒囨崲銆?
system.in ****===> 榪欐槸鎺у埗鍙拌緭鍏ヤ俊鎭椂璇誨叆鐨勭閬撱傚ス緇ф壙PrintStream ,鑰孭rintStream 綾? 緇ф壙浜咶ilterOutputStream 綾匯傝繖涓被瀹炵幇浜哋utputStream 鎺ュ彛銆?
Xiaobo Sun 2008-12-16 16:52 鍙戣〃璇勮
]]>瀹夎瀹屾垚鍚庯紝vsftpd鏄綔涓轟竴涓嫭绔嬬殑鏈嶅姟鍚姩錛屼笉鎺ュ彈xinetd鐨勭鐞嗐傜郴緇熶細鑷姩鍦⊿ervice鍒楄〃涓坊鍔犲悕縐皏sftpd鐨勬湇鍔°傚惎鍔ㄦ湇鍔＄殑姝ラ濡備笅錛?br>
銆銆1銆乊ast鈫扴ystem鈫扴ystem Services(Run level)錛?br>
銆銆2銆佸湪鏈嶅姟鍒楄〃涓夋嫨vsftpd錛岀偣鍑諱笅鏂圭殑Enable鎸夐挳錛屽惎鍔ㄦ湇鍔★紝Finish銆?br>
銆銆娉ㄦ剰錛屽湪鍚姩vsftpd鏃跺彲鑳戒細涓嶈兘鍚姩錛屾湁鏃舵槸鍥犱負瀹冩墍渚濊禆鐨勬湇鍔℃病鏈夊惎鍔紝濡俿yslog錛岃繖鏃墮変腑syslog錛岀偣鍑籈nable鎸夐挳銆傚鏋滆繕鏄笉鑳藉惎鍔紝鍙互閲嶆柊鍚姩xinetd鏈嶅姟錛岀劧鍚庡啀鍚姩vsftpd鏈嶅姟銆?img src ="http://www.aygfsteel.com/sunxiaobo/aggbug/245595.html" width = "1" height = "1" />
Xiaobo Sun 2008-12-11 03:32 鍙戣〃璇勮
]]>$(CC) `pkg-config --cflags --libs gtk+-2.0` hello.c -o hello
Xiaobo Sun 2008-10-15 19:15 鍙戣〃璇勮
]]>export variable := value
鍏剁瓑浠蜂簬錛?br>variable := value
export variable
export variable += value
鍏剁瓑浠蜂簬錛?br>variable += value
export variable
Xiaobo Sun 2008-10-09 22:08 鍙戣〃璇勮
]]>all: $(objects)
$(objects): %.o: %.c
$(CC) -c $(CFLAGS) $< -o $@
涓婇潰鐨勪緥瀛愪腑錛屾寚鏄庝簡鎴戜滑鐨勭洰鏍囦粠$object涓幏鍙栵紝鈥?.o鈥濊〃鏄庤鎵鏈変互鈥?o鈥濈粨灝劇殑
鐩爣錛屼篃灝辨槸鈥渇oo.o bar.o鈥濓紝涔熷氨鏄彉閲?object闆嗗悎鐨勬ā寮忥紝鑰屼緷璧栨ā寮忊?.c鈥濆垯鍙栨ā
寮忊?.o鈥濈殑鈥?鈥濓紝涔熷氨鏄渇oo bar鈥濓紝騫朵負鍏跺姞涓嬧?c鈥濈殑鍚庣紑錛屼簬鏄紝鎴戜滑鐨勪緷璧栫洰鏍?br>灝辨槸鈥渇oo.c bar.c鈥濄傝屽懡浠や腑鐨勨?<鈥濆拰鈥?@鈥濆垯鏄嚜鍔ㄥ寲鍙橀噺錛屸?<鈥濊〃紺烘墍鏈夌殑渚濊禆
鐩爣闆嗭紙涔熷氨鏄渇oo.c bar.c鈥濓級錛屸?@鈥濊〃紺虹洰鏍囬泦錛堜篃灝辨槸鈥渇oo.o bar.o鈥濓級銆備簬鏄紝
涓婇潰鐨勮鍒欏睍寮鍚庣瓑浠蜂簬涓嬮潰鐨勮鍒欙細
foo.o : foo.c
$(CC) -c $(CFLAGS) foo.c -o foo.o
bar.o : bar.c
$(CC) -c $(CFLAGS) bar.c -o bar.o
璇曟兂錛屽鏋滄垜浠殑鈥?.o鈥濇湁鍑犵櫨涓紝閭ｇ鎴戜滑鍙鐢ㄨ繖縐嶅緢綆鍗曠殑鈥滈潤鎬佹ā寮忚鍒欌濆氨
鍙互鍐欏畬涓鍫嗚鍒欙紝瀹炲湪鏄お鏈夋晥鐜囦簡
Xiaobo Sun 2008-10-09 21:07 鍙戣〃璇勮
]]>CCINCLUDE= -I$(GSOAPPATH)
#CCINCLUDE+= -I$(RESPONSEPATH)
CCFLAGS= -Wall -g
OBJECTS= soapServiceRequestIFSOAPService.o soapC.o stdsoap2.o \
soapServiceResponseIFSOAPProxy.o
# targets
all : server++ client++
server++ : server.cpp $(OBJECTS)
g++ $(CCFLAGS) $(CCINCLUDE) $^ -o $@
client++ : client.cpp soapC.o stdsoap2.o soapServiceResponseIFSOAPProxy.o
g++ $(CCFLAGS) $(CCINCLUDE) $^ -o $@
soapServiceRequestIFSOAPService.o : soapServiceRequestIFSOAPService.cpp
g++ -c $(CCINCLUDE) $^
soapC.o : soapC.cpp
g++ -c $(CCINCLUDE) $^
stdsoap2.o : $(GSOAPPATH)stdsoap2.cpp
g++ -c $(CCINCLUDE) $^
soapServiceResponseIFSOAPProxy.o : soapServiceResponseIFSOAPProxy.cpp
g++ -c $(CCINCLUDE) $^
clean :
rm -f server++ client++ *.o *~ *.swp
.PHONY : all clean
Xiaobo Sun 2008-10-09 20:57 鍙戣〃璇勮
]]>Xiaobo Sun 2008-10-09 19:38 鍙戣〃璇勮
]]>1銆銆A->B 10000 0
2 B->A 20000 10000+1=10001
3 A->B 10001 20000+1=20001
瑙ｉ噴錛?
1錛欰鍚態(tài)鍙戣搗榪炴帴璇鋒眰錛屼互涓涓殢鏈烘暟鍒濆鍖朅鐨剆eq,榪欓噷鍋囪涓?0000錛屾鏃禔CK錛?
2錛欱鏀跺埌A鐨勮繛鎺ヨ姹傚悗錛屼篃浠ヤ竴涓殢鏈烘暟鍒濆鍖朆鐨剆eq錛岃繖閲屽亣璁句負20000錛屾剰鎬濇槸錛氫綘鐨勮姹傛垜宸叉敹鍒幫紝鎴戣繖鏂圭殑鏁版嵁嫻佸氨浠庤繖涓暟寮濮嬨侭鐨凙CK鏄疉鐨剆eq鍔?錛屽嵆10000錛?錛?0001
3錛欰鏀跺埌B鐨勫洖澶嶅悗錛屽畠鐨剆eq鏄畠鐨勪笂涓姹傜殑seq鍔?錛屽嵆10000錛?錛?0001錛屾剰鎬濅篃鏄細浣犵殑鍥炲鎴戞敹鍒頒簡錛屾垜榪欐柟鐨勬暟鎹祦灝變粠榪欎釜鏁板紑濮嬨侫姝ゆ椂鐨凙CK鏄疊鐨剆eq鍔?錛屽嵆20000+1=20001
鏁版嵁浼犺緭闃舵錛?
搴忓彿銆銆鏂瑰悜銆銆銆銆銆銆seq ack size
23 A->B 40000 70000 1514
24 B->A 70000 40000+1514-54=41460 54
25 A->B 41460 70000+54-54=70000 1514
26 B->A 70000 41460+1514-54=42920 54
瑙ｉ噴錛?
23:B鎺ユ敹鍒癆鍙戞潵鐨剆eq=40000,ack=70000,size=1514鐨勬暟鎹寘
24:浜庢槸B鍚慉涔熷彂涓涓暟鎹寘錛屽憡璇塀錛屼綘鐨勪笂涓寘鎴戞敹鍒頒簡銆侭鐨剆eq灝變互瀹冩敹鍒扮殑鏁版嵁鍖呯殑ACK濉厖錛孉CK鏄畠鏀跺埌鐨勬暟鎹寘鐨凷EQ鍔犱笂鏁版嵁鍖呯殑澶у皬(涓嶅寘鎷互澶綉鍗忚澶達紝IP澶達紝TCP澶?錛屼互璇佸疄B鍙戣繃鏉ョ殑鏁版嵁鍏ㄦ敹鍒頒簡銆?
25:A鍦ㄦ敹鍒癇鍙戣繃鏉ョ殑ack涓?1460鐨勬暟鎹寘鏃訛紝涓鐪嬪埌41460錛屾濂芥槸瀹冪殑涓婁釜鏁版嵁鍖呯殑seq鍔犱笂鍖呯殑澶у皬錛屽氨鏄庣櫧錛屼笂嬈″彂閫佺殑鏁版嵁鍖呭凡瀹夊叏鍒拌揪銆備簬鏄畠鍐嶅彂涓涓暟鎹寘緇橞銆傝繖涓鍦ㄥ彂閫佺殑鏁版嵁鍖呯殑seq涔熶互瀹冩敹鍒扮殑鏁版嵁鍖呯殑ACK濉厖錛孉CK灝變互瀹冩敹鍒扮殑鏁版嵁鍖呯殑seq(70000)鍔犱笂鍖呯殑size(54)濉厖,鍗砤ck=70000+54-54(鍏ㄦ槸澶撮暱錛屾病鏁版嵁欏?銆?
26錛氫竴鏍風殑鍟?
Xiaobo Sun 2008-10-09 19:35 鍙戣〃璇勮
]]>Xiaobo Sun 2008-07-28 18:09 鍙戣〃璇勮
]]>