[终稿]java设置运行环境

[终稿]java设置运行环境 java设置运行环境 閰嶇疆杩愯 java绋嬪簭鏂规硶锛? 鏂规硶涓? 瀹夎 jdk鍚庯紝閰嶇疆JAVA_HOME銆丳ATH銆丆LASSPATH 1锛屽垱寤篔AVA_HOME锛欳:\Program Files\Java\jdk1.5.0_22 2锛屾坊鍔燩ATH閰嶇疆锛氬湪Path鐜 鍙橀噺鍊肩殑鏈?鍓嶉潰锛屾坊鍔?JAVA_HOME%\bin;%JAVA_HOME%\jre\bin; 3锛屽垱寤篊LASSPATH 锛?;%JAVA_HOME%\lib\dt.jar;%JAVA_HOME%\lib\tools.jar; 4锛屾墦寮?cmd锛岃繘鍏ュ埌瑕佹墽琛岀殑java绫昏矾寰勪笅杈撳叆 java 瑕佹墽琛岀殑绫诲悕 5, 濡傛灉杩愯 鐨勭被寮曠敤浜嗙 涓夋柟jar鍖咃紝鍒欓渶瑕佹妸绗 笁鏂瑰寘鍔犲叆classpath涓? <1> 鍔犲埌绯荤粺鐜 鍙橀噺CLASSPATH涓 ?? <2> 杩愯 鏃舵坊鍔燾lasspath銆備緥濡傦細java -classpath D:\ext-libs\nzjdbc.jar;. 瑕佹墽琛岀殑绫诲悕 渚嬩腑鐨?CLASSPATH 鍧囨湭鍖呭惈 HelloJava.class 鎵?鍦ㄧ殑鐩 綍(C:\java, /home/fancy/java)锛屼絾鏄 潎鍖呭惈浜嗗綋鍓嶇洰褰?(.)銆? 鍥犳 杞 埌鍖呭惈 HelloJava.class 鐨勭洰褰曚笅鍘绘墽琛?java HelloJava锛? 鍦?Java 瀵绘壘鍒?CLASSPATH 涓 殑鈥? (褰撳墠鐩 綍锛孋:\java, /home/fancy/java)鈥濇椂锛屾壘鍒颁簡 HelloJava.class锛岃繍琛屾垚鍔熴?? 鏂规硶浜? 1.瀹夎 JDK锛屽畨瑁呰繃绋嬩腑鍙 互鑷 畾涔夊畨瑁呯洰褰曠瓑淇?伅锛? 渚嬪 :鎴戜滑閫夋嫨瀹夎 鐩 綍涓篋:\java\jdk1.5.0_08锛? 2.瀹夎 瀹屾垚鍚庯紝鍙冲嚮鈥滄垜鐨勭數鑴戔?濓紝鐐瑰嚮鈥滃睘鎬р?濓紱 3.閫夋嫨鈥滈珮绾р?濋?夐」鍗?紝鐐瑰嚮鈥滅幆澧冨彉閲忊?濓紱 4.鍦ㄢ?滅郴缁熷彉閲忊?濅腑锛岃 缃?椤瑰睘鎬э紝 JAVA_HOME,PATH,CLASSPATH(澶у皬鍐欐棤鎵?璋?,鑻ュ凡瀛樺湪鍒欑偣鍑烩?滅紪杈戔?濓紝涓嶅瓨鍦ㄥ垯鐐瑰嚮鈥滄柊寤衡?濓紱 5.JAVA_HOME鎸囨槑JDK瀹夎 璺 緞锛屽氨鏄 垰鎵嶅畨瑁呮椂鎵?閫夋嫨鐨勮矾寰凞:\java\jdk1.5.0_08锛屾 璺 緞涓嬪寘鎷琹ib锛宐in锛宩re绛夋枃浠跺す锛堟 鍙橀噺鏈?濂借 缃 紝鍥犱负浠ュ悗杩愯 tomcat锛宔clipse绛夐兘闇?瑕佷緷*姝ゅ彉閲忥級锛? Path浣垮緱绯荤粺鍙 互鍦ㄤ换浣曡矾寰勪笅璇嗗埆java鍛戒护锛岃 涓猴細 %JAVA_HOME%\bin;%JAVA_HOME%\jre\bin CLASSPATH涓簀ava鍔犺浇绫?class or lib)璺 緞锛屽彧鏈夌被鍦?lasspath涓 紝java鍛戒护鎵嶈兘璇嗗埆锛? 璁句负 锛?.;%JAVA_HOME%\lib\dt.jar;%JAVA_HOME%\lib\tools.jar (瑕佸姞.琛ㄧず褰撳墠璺 緞) 銆?銆? %JAVA_HOME%灏辨槸寮曠敤鍓嶉潰鎸囧畾鐨凧AVA_HOME锛? 6.鈥滃紑濮嬧?濓紞>;鈥滆繍琛屸?濓紝閿 叆鈥渃md鈥濓紱 7.閿 叆鍛戒护鈥渏ava -version鈥濓紝鈥渏ava鈥濓紝鈥渏avac鈥濆嚑涓 懡浠わ紝鍑虹幇鐢婚潰锛岃 鏄庣幆澧冨彉閲忛厤缃 垚鍔燂紱 8.濂戒簡锛屾墦瀹屾敹宸ャ?備笅闈?紑濮嬩綘鐨勭 涓?涓猨ava绋嬪簭鍚с?? 閫氬父锛屾垜浠 渶瑕佽 缃 笁涓 幆澧冨彉閲忥細JAVA_HOME銆丳ATH 鍜?CLASSPATH銆? JAVA_HOME锛氳 鐜 鍙橀噺鐨勫?煎氨鏄?Java 鎵?鍦ㄧ殑鐩 綍锛屼竴浜?Java 鐗堢殑杞 欢鍜屼竴浜?Java 鐨勫伐鍏烽渶瑕佺敤鍒拌 鍙橀噺锛岃 缃?PATH 鍜?CLASSPATH 鐨勬椂鍊欙紝涔熷彲浠ヤ娇鐢ㄨ 鍙橀噺浠ユ柟渚胯 缃 ?? PATH锛氭寚瀹氫竴涓 矾寰勫垪琛 紝鐢ㄤ簬鎼滅储鍙 墽琛屾枃浠剁殑銆傛墽琛屼竴涓 彲鎵ц 鏂囦欢鏃讹紝濡傛灉璇ユ枃浠朵笉鑳藉湪褰撳墠璺 緞涓嬫壘鍒帮紝鍒欎緷娆″ 鎵?PATH 涓 殑姣忎竴涓 矾寰勶紝鐩磋嚦鎵惧埌銆? 鎴栬?呮壘瀹?PATH 涓 殑璺 緞涔熶笉鑳芥壘鍒帮紝鍒欐姤閿欍?侸ava 鐨勭紪璇戝懡浠?(javac)锛屾墽琛屽懡浠?(java) 鍜屼竴浜涘伐鍏峰懡浠?(javadoc, jdb 绛? 閮藉湪鍏跺畨瑁呰矾寰勪笅鐨?bin 鐩 綍涓 ?? 鍥犳 鎴戜滑搴旇 灏嗚 璺 緞娣诲姞鍒?PATH 鍙橀噺涓 ?? CLASSPATH锛氫篃鎸囧畾涓?涓 矾寰勫垪琛 紝鏄 敤浜庢悳 绱?Java 缂栬瘧鎴栬?呰繍琛屾椂闇?瑕佺敤鍒扮殑绫汇?? 鍦?CLASSPATH 鍒楄〃涓 櫎浜嗗彲浠ュ寘鍚 矾寰勫 锛岃繕鍙 互鍖呭惈 .jar 鏂囦欢銆? Java 鏌ユ壘绫绘椂浼氭妸杩欎釜 .jar 鏂囦欢褰撲綔涓?涓 洰褰曟潵杩涜 鏌ユ壘銆? 閫氬父锛屾垜浠 渶瑕佹妸 JDK 瀹夎 璺 緞涓嬬殑 jre\lib\rt.jar (Linux: jre/lib/rt.jar) 鍖呭惈鍦?CLASSPATH 涓 ?? PATH 鍜?CLASSPATH 閮芥寚瀹氳矾寰勫垪琛 紝鍒楄〃涓 殑鍚勯」 (鍗冲悇涓 矾寰? 涔嬮棿浣跨敤鍒嗛殧绗，垎闅斻?傚湪 Windows 涓嬶紝鍒嗛殧绗,槸鍒嗗彿 (;)锛岃?屽湪 Linux 涓嬶紝鍒嗛殧绗,槸鍐掑彿 (:)銆? 鍦?Windows 涓嬭 缃? Windows 涓嬩娇鐢?set 鍛戒护璁剧疆鐜 鍙橀噺锛屼负浜嗕娇姣忎竴娆″惎鍔ㄨ 绠楁満閮借 缃 繖浜涚幆澧冨彉閲忥紝搴旇 鍦ㄧ郴缁熺洏鏍圭洰褰曚笅鐨?autoexec.bat 鏂囦欢涓 繘琛岃 缃 紝濡傦細 set JAVA_HOME=C:\jdk set PATH=%JAVA_HOME%\bin;C:\Windows;C:\Windows\Command set CLASSPATH=%JAVA_HOME%\jre\lib\rt.jar;. 鏈変簺鐗堟湰鐨?Windows 涓嶈兘鐢?%鍙橀噺鍚? 鏉ユ浛鎹?幆澧冨彉閲忕殑鍐呭 锛岄偅涔堝氨鍙 ソ鐩存帴鍐?C:\jdk 鑰屼笉鏄?%JAVA_HOME% 浜嗐?? 鍙， 锛孋:\Windows 鍜?C:\Windows\Command 鏄?Windows 浼氳嚜鍔ㄥ姞鍏ヨ矾寰勭殑锛屾墍浠ュ彲浠ヤ粠璁剧疆涓 幓鎺夈?? 濡傛灉鍦?autoexec.bat 涓 凡缁忚 缃 簡 PATH锛岄偅鍙 渶瑕 佸皢 %JAVA_HOME%\bin 鍔犲埌鍘熸潵璁剧疆 PATH 鐨勯偅鏉? 鍙ヤ腑灏辫 浜嗐?? CLASSPATH 涔熷彲浠ユ牴鎹 渶瑕佽 缃 垨鑰呭姞鍏ュ叾瀹冪殑璺 緞锛? 姣斿 浣犳兂鎶婅嚜宸卞啓鐨勪竴浜涚被鏀惧湪 C:\java 涓 紝灏卞彲浠ユ妸 C:\java 涔熸坊鍔犲埌 CLASSPATH 涓 幓锛? set CLASSPATH=%JAVA_HOME%\jre\lib\rt.jar;C:\java;.銆? 鎴栬?呮墽琛宩ava鐨勬椂鍊?娣诲姞璁剧疆classpath閰嶇疆 渚嬪 锛歫ava -classpath D:\ext-libs\nzjdbc.jar;. HelloWorld 娉ㄦ剰锛屽湪 CLASSPATH 涓 寘鍚 簡涓?涓 ?滃綋鍓嶇洰褰?(.)鈥濄?傚寘鍚 簡璇ョ洰褰曞悗锛屽氨鍙 互鍒颁换鎰忕洰褰曚笅鍘绘墽琛岄渶瑕佺敤鍒拌 鐩 綍涓嬫煇涓 被鐨?Java 绋嬪簭锛屽嵆浣胯 璺 緞骞舵湭鍖呭惈鍦?CLASSPATH 涓 篃鍙 互銆? 鍘熷洜寰堢畝鍗曪細铏界劧娌?湁鏄庣‘鐨勬妸璇ヨ矾寰勫寘鍚 湪 CLASSPATH 涓 紝浣?CLASSPATH 涓 殑 鈥?鈥?鍦ㄦ 鏃跺氨浠,〃浜嗚 璺 緞锛屽 锛? 鍋囪 鍦?C:\java 鐩 綍涓嬫湁鍙 繍琛岀殑绫?HelloJava.class 锛岄偅涔? C:\> set CLASSPATH=C:\jdk\jre\lib\rt.jar;. // 璁剧疆 CLASSPATH 鐜 鍙橀噺锛屾敞鎰忔渶鍚庢湁涓?涓?鈥?鈥? C:\> cd java // 杞 埌 C:\java 鐩 綍 C:\java> java HelloJava // 杩愯 HelloJava Hello, Java. // 杩愯 缁撴灉 C:\java> _ 鍦?Linux 涓嬭 缃? Linux 涓嬩娇鐢ㄢ?滃彉閲忓悕=鍙橀噺鍊尖?濊 缃 彉閲忥紝骞朵娇鐢?export 鍛戒护灏嗗叾瀵煎嚭涓虹幆澧冨彉閲忋?備负浜嗕娇姣忎竴娆,櫥褰曢兘鑷 姩璁剧疆濂借繖浜涘彉閲忥紝浣犻渶瑕佸湪 ~/.bash_profile 閲屾垨鑰?~./bashrc 閲岃繘琛岃 缃 紝濡? export JAVA_HOME=/usr/local/jdkexport PATH=$JAVA_HOME/bin:$PATH export CLASSPATH=$JAVA_HOME/jre/lib/rt.jar:. 璁剧疆 PATH 鏃剁敤鐨?$JAVA_HOME 鏄 寚鏇挎崲鍙橀噺 JAVA_HOME 鐨勫?煎埌 $JAVA_HOME 鎵?鍦ㄤ綅缃 ?傚 涓婂彞瀹為檯灏辨槸 export PATH=/usr/local/jdk/bin:$PATH銆傝繖鍙ヤ腑 $PATH 涔熸槸鍚屾牱鐨勪綔鐢 紝涓嶈繃杩欓噷鐨?PATH 鏄 寚浠ュ墠璁剧疆鐨?PATH 鍙橀噺鐨勫?硷紝鑰岄潪鏈 璁剧疆 PATH 鍙橀噺鐨勫?笺?? 娉ㄦ剰锛屽湪 CLASSPATH 涓 寘鍚 簡涓?涓 ?滃綋鍓嶇洰褰?(.)鈥濄?傚寘鍚 簡璇ョ洰褰曞悗锛屽氨鍙 互鍒颁换鎰忕洰褰曚笅鍘绘墽琛岄渶瑕佺敤鍒拌 鐩 綍涓嬫煇涓 被鐨?Java 绋嬪簭锛屽嵆浣胯 璺 緞骞舵湭鍖呭惈鍦?CLASSPATH 涓 篃鍙 互銆傚師鍥犲緢绠?鍗曪細铏界劧娌?湁鏄庣‘鐨勬妸璇ヨ矾寰勫寘鍚 湪 CLASSPATH 涓 紝浣?CLASSPATH 涓 殑 鈥?鈥?鍦ㄦ 鏃跺氨浠 ,〃浜嗚 璺 緞锛屼緥濡? 鍋囪 鍦?/home/fancy/java 鐩 綍涓嬫湁鍙 繍琛岀殑绫?HelloJava.class锛岄偅涔? [fancy@matrix fancy]$ export CLASSPATH=/usr/local/jdk/jre/lib/rt.jar:. // 璁剧疆 CLASSPATH锛屾敞鎰忔渶鍚庣殑鈥?鈥? [fancy@matrix fancy]$ cd ~/java // 杞 埌 /home/fancy/java [fancy@matrix java]$ pwd // 鏄剧ず褰撳墠鐩 綍 /home/fancy/java // 褰撳墠鐩 綍鏄?/home/fancy/java [fancy@matrix java]$ java HelloJava // 杩愯 HelloJava Hello, Java // 杩愯 缁撴灉 [fancy@matrix java]$ _ 涓や釜渚嬪瓙閮芥彁鍒颁竴涓 ?滃彲杩愯 鐨勭被鈥濓紝瀹冩槸鎸囧寘鍚 簡 public static void main(String[] args) 鏂规硶鐨勭被锛岃繖灏嗗湪涓嬩竴绔?HelloJava 涓?鑺備腑璇，堪銆? 渚嬩腑鐨?CLASSPATH 鍧囨湭鍖呭惈 HelloJava.class 鎵?鍦ㄧ殑鐩 綍(C:\java, /home/fancy/java)锛屼絾鏄 潎鍖呭惈浜嗗綋鍓嶇洰褰?(.)銆? 鍥犳 杞 埌鍖呭惈 HelloJava.class 鐨勭洰褰曚笅鍘绘墽琛?java HelloJava锛屽湪 Java 瀵绘壘鍒?CLASSPATH 涓 殑鈥? (褰撳墠鐩 綍锛孋:\java, /home/fancy/java)鈥濇椂锛屾壘鍒颁簡 HelloJava.class锛岃繍琛屾垚鍔熴?