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1. Path鐨勬蹇?/strong>
鏂囦歡緋葷粺浼?xì)鎶婃枃錃g榪涜緇勭粐騫跺瓨鏀懼湪濯掍粙涓婏紝閫氬父鏄竴涓垨澶氫釜紜洏涓娿傜洰鍓嶄嬌鐢ㄧ殑澶у鏁扮殑鏂囦歡緋葷粺鏄互鏍?wèi)迮炵殑鏂瑰紡鏉ュ瓨鍌ㄦ枃錃g鐨勩傚湪鏍?wèi)鐨剻宥绔槸涓涓紙鎴栧涓級(jí)
鏍硅妭鐐癸紝鍦ㄦ牴鑺傜偣涔嬩笅鏄枃浠跺拰鐩綍錛岀洰褰曚笅鍙堝彲浠ュ寘鍚枃浠跺拰鐩綍銆傜悊璁轟笂鍙互榪欐牱涓灞傚眰鐨勪竴鐩村祵濂椾笅鍘伙紙褰撶劧瀹為檯涓槸涓嶅彲鑳界殑錛屼緥濡俉indows緋葷粺瀵?
璺緞鐨勯暱搴︽湁闄愬埗錛夈?br />
涓嬮潰鐨勫浘涓睍紺轟簡(jiǎn)涓涓寘鍚竴涓牴鑺傜偣鐨勭洰褰曟爲(wèi)銆傦紙鍦╓indows緋葷粺涓敮鎸佸涓牴鑺傜偣錛屼緥濡侰:\鍜孌:\鍒嗗埆鏄竴涓牴鑺傜偣銆傦級(jí)
Path鑳藉鍞竴鐨勬爣璇嗘枃浠剁郴緇熶腑鐨勬煇涓涓枃浠躲備緥濡備笂闈㈠浘涓殑statusReport鏂囦歡鍦╓indows緋葷粺涓氨鍙互浣跨敤浠ヤ笅鐨凱ath鏉ユ爣璇嗭細(xì)
c:\home\sally\statusReport
鍦╯olaris緋葷粺涓紝鍏秔ath涓?br />
/home/sally/statusReport.
Path涓殑鍒嗛殧絎﹀湪涓嶅悓鐨勬枃浠剁郴緇熶腑鏄笉鍚岀殑錛屼緥濡傚湪Windows緋葷粺涓嬌鐢╘錛屽湪Solaris緋葷粺涓嬌鐢?銆?br />
Path鍙堝彲浠ュ垎涓虹粷瀵硅礬寰勫拰鐩稿璺緞銆傜粷瀵硅礬寰勬繪槸鍚湁鏍硅妭鐐瑰拰鐢ㄦ潵瀹氫綅鏂囦歡鐨勫畬鏁寸殑鐩綍鍒楄〃銆備緥濡?home/sally/statusReport
灝辨槸緇濆璺緞銆傜浉瀵硅礬寰勯渶瑕佸拰鍙﹀鐨勮礬寰勭粨鍚堝湪涓璧鋒墠鑳藉紜畾涓涓枃浠躲備緥濡傚姞鍝﹀姞鍝﹀摝joe/foo灝辨槸涓涓浉瀵硅礬寰勶紝濡傛灉娌℃湁鍏朵粬鐨勪俊鎭紝紼嬪簭灝辨病鏈?
鍔炴硶瀹氫綅榪欎釜鏂囦歡銆傛垜浠繀欏昏榪欎釜鏄浉瀵?home鐨勭浉瀵硅礬寰勶紝榪欐牱鎴戜滑鎵嶈兘澶熸壘鍒板畠銆?br />
闄や簡(jiǎn)鎴戜滑鐔熸?zhèn)夌殑鐩綍鍜屾枃錃g涔嬪錛屾湁涓浜涙枃浠剁郴緇熶腑榪樻敮鎸佺鍙烽摼鎺ワ紙symbolic link),涔熺О涓簊ymlink鎴杝oft
link銆備竴涓鍙烽摼鎺ユ槸涓涓壒孌婄殑鏂囦歡錛屽畠瀹為檯涓婃槸鍙﹀涓涓摼鎺ョ殑寮曠敤銆傚湪澶у鏁版儏鍐典笅絎﹀彿閾炬帴瀵瑰簲鐢ㄧ▼搴忔槸閫忔槑鐨勶紝瀵圭鍙烽摼鎺ョ殑鎿嶄綔浼?xì)鑷姩鐨勯噸瀹氬悜鍒?
閾炬帴鎵鎸囧悜鐨勭洰鐨勫湴錛岄櫎闈炴搷浣滄槸鍒犻櫎榪欎釜絎﹀彿閾炬帴銆侀噸鍛藉悕榪欎釜絎﹀彿閾炬帴鎴栦慨鏀圭鍙烽摼鎺ョ殑鐩殑鍦般?br />
鍦ㄤ笅闈㈢殑鍥句腑錛宭ogFile瀵逛簬鐢ㄦ埛鏉ヨ灝辨槸涓涓父瑙勭殑鏂囦歡錛屼絾鏄疄闄呬笂鏄竴涓鍙烽摼鎺ワ紝閾炬帴鍒癲ir/logs/HomeLogFile鏂囦歡銆?
HomeLogFile鏄繖涓摼鎺ョ殑鐩殑鍦般?br />
涓嶆伆褰撶殑浣跨敤絎﹀彿閾炬帴浼?xì)瀵艰嚧弩@鐜紩鐢紝渚嬪鐩綍A鏄竴涓鍙烽摼鎺ワ紝鎸囧悜鐩綍B錛岀洰褰旴涓嬫湁涓涓瓙鐩綍鏄鍙烽摼鎺ワ紝鎸囧悜鐩綍A鐨勭埗鐩綍銆傝繖鏍鳳紝褰撶▼搴忎紒鍥鵑?
褰掔殑閬嶅巻鏁翠釜鐩綍鏍?wèi)鏃跺Q屽氨浼?xì)鍑洪棶棰樸傚垢榪愮殑鏄紝榪欎釜闂宸茬粡琚彂鐜頒簡(jiǎn)錛屽茍涓斾笉浼?xì)瀵艰嚧绋嬪簭鐨勬d驚鐜?br />
2.Path綾?/strong>
Path綾繪槸JDK7鏂板紩鍏ョ殑涓涓被錛岃綾繪槸java.io.file鍖呯殑鍩虹煶銆?br />
鍜岀被鐨勫悕縐版墍灞曠ず鐨勪竴鏍鳳紝Path綾誨氨鏄枃浠剁郴緇熶腑path姒傚康鐨勭▼搴忚〃鐜般侾ath瀵硅薄鍖呭惈浜?jiǎn)鏂囦欢鍚嶅拰鐩綍鍒楄〃锛寴q欎簺淇℃伅鍙互鐢ㄦ潵鍒涘緩path錛屽茍涓旂敤
鏉ユ楠屻佸畾浣嶅拰鎿嶄綔鏂囦歡銆?br />
Path瀹炰緥鏄拰搴曞眰鎿嶄綔緋葷粺鐩稿叧鐨勩傚湪Solaris緋葷粺涓紝Path浣跨敤Solaris鐨勫彞娉?/home/joe/foo)錛涘湪Window鎿嶄綔緋?
緇熶腑錛孭ath浼?xì)鋴社敤Window鐨勫彞娉?C:\home\joe\foo)銆傚洜姝ath涓嶆槸鎿嶄綔緋葷粺鏃犲叧鐨勩備綘涓嶈兘澶熸瘮杈冧竴涓潵鑷猄olaris鏂囦歡
緋葷粺鐨凱ath鍜屼竴涓潵鑷猈indows鏂囦歡緋葷粺鐨凱ath騫舵湡鏈涘畠浠浉絳夛紝鍦ㄧ洰褰曠粨鏋勫拰鏂囦歡瀹屽叏涓鏍風(fēng)殑鏃跺欎篃涓嶈銆?br />
Path瀵瑰簲鐨勬枃浠舵垨鑰呯洰褰曞彲浠ヤ笉瀛樺湪銆傛垜浠彲浠ヤ互涓嶅悓鐨勬柟寮忓垱寤篜ath瀹炰緥騫舵搷浣滃畠錛氭墿灞曡礬寰勩佹娊鍙栬礬寰勭殑涓閮ㄥ垎銆佸拰鍏朵粬鐨凱ath姣旇緝銆傛垜浠篃鍙互
媯(gè)鏌ath瀵瑰簲鐨勭洰褰曟垨鏂囦歡鏄惁瀛樺湪銆?span onclick="tagshow(event)" class="t_tag">鍒涘緩鏂囦歡鎴栫洰褰曘佹墦寮鎴栧垹闄ゆ枃浠躲佷慨鏀硅鍙潈闄愮瓑銆?br />
Path綾繪槸鑳藉鍖哄垎絎﹀彿閾炬帴鐨勩傛墍鏈夌殑Path鐨勬柟娉曡涔堜細(xì)媯(gè)嫻嬫槸鍚︽槸絎﹀彿閾炬帴騫舵墽琛屼笉鍚岀殑鎿嶄綔錛屾垨鑰呮彁渚涗簡(jiǎn)涓涓夋嫨鏉ヤ嬌鐢ㄦ埛鑳藉閰嶇疆褰撻亣鍒扮鍙烽摼鎺ョ殑
鏃跺欐墽琛屼粈涔堟搷浣溿?br />
Path綾繪彁渚涗簡(jiǎn)寰堝鏄撲簬浣跨敤鐨勭壒鎬э紝Path綾葷殑鏂規(guī)硶鍙互鍒嗘垚涓ょ被錛?br />
鍦ㄤ笅涓綃囨枃绔犱腑錛屾垜浠細(xì)鍏蜂綋浠嬬粛Path綾葷殑榪欎簺鏂規(guī)硶銆?
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鍦ㄤ嬌鐢?/SPAN>JDBC鏉ユ煡璇㈡暟鎹簱鐨勬椂鍊欙紝閫氬父鐨勬楠ゆ槸錛?/SPAN>
1錛?SPAN style="FONT: 7pt 'Times New Roman'"> 娉ㄥ唽椹卞姩紼嬪簭
2錛?SPAN style="FONT: 7pt 'Times New Roman'"> 鑾峰彇鏁版嵁搴撹繛鎺?/SPAN>
3錛?SPAN style="FONT: 7pt 'Times New Roman'"> 鎵ц鏌ヨ璇彞
4錛?SPAN style="FONT: 7pt 'Times New Roman'"> 鍏抽棴榪炴帴銆?/SPAN>
鍦ㄨ幏寰楁暟鎹簱榪炴帴鍚庯紝灝卞彲浠ラ氳繃getMetaData錛堬級(jí)鏂規(guī)硶鏉ヨ幏鍙?/SPAN>DatabaseMetaData;鐒跺悗閫氳繃DatabaseMetaData鐨?/SPAN>getPrimaryKeys ()鏂規(guī)硶鏉ヨ幏鍙栦富閿殑淇℃伅銆?/SPAN>
涓嬮潰鏄垜鍋氱殑紺轟緥紼嬪簭錛岃紼嬪簭鍦?/SPAN>JBuilder2005錛?/SPAN>oracle8i涓嬮氳繃錛?/SPAN>
import java.sql.*;
import javax.sql.*;
public class TestJDBC {
public TestJDBC() {
}
public static void main(String[] args) throws SQLException {
Connection con = null;
Statement st = null;
ResultSet rst = null;
try{
//娉ㄥ唽鏁版嵁搴撻┍鍔ㄧ▼搴?/SPAN>
Class.forName("oracle.jdbc.driver.OracleDriver");
//鑾峰彇鏁版嵁搴撹繛鎺?/SPAN>
con = DriverManager.getConnection("jdbc:oracle:thin:@10.60.203.80:1521:TestDB","123","123");
//鑾峰彇涓婚敭淇℃伅
rst = con.getMetaData().getPrimaryKeys(null,null,"USER");
//鎵撳嵃涓婚敭淇℃伅
if (!rst.isAfterLast()) {
rst.next();
System.out.println(rst.getString("TABLE_NAME") + " " +
rst.getString("COLUMN_NAME"));
}
}
catch (Exception e){
System.out.println(e.getLocalizedMessage());
}
finally{
try{
//鍏抽棴榪炴帴
if (rst != null)
rst.close();
if (con != null)
con.close();
}
catch (SQLException e){
throw e;
}
}
}
}
涓婇潰鐨勭▼搴忎腑,鍦ㄨ幏鍙栦富閿俊鎭殑鏃跺?/SPAN>,璇彞
rst = con.getMetaData().getPrimaryKeys(null,null,"USER");
鐢ㄦ潵鑾峰彇涓婚敭淇℃伅銆傚叧浜庤鍑芥暟鐨勮緇嗕俊鎭紝璇峰弬闃?/SPAN>JDK鐨勬枃妗c傝繖閲岃璇寸殑鏄紝鍦ㄦ祴璇曚腑鍙戠幇絎笁涓弬鏁幫紙鏁版嵁搴撹〃鍚嶏級(jí)鏄ぇ灝忓啓鏁忔劅鐨勶紝濡傛灉鍐欐垚user鏄煡涓嶅埌緇撴灉鐨勩?/SPAN>
聽聽聽聽聽聽聽聽Field[] fields = test.getClass().getDeclaredFields();
聽聽
聽聽聽聽聽聽聽聽try
聽聽聽聽聽聽聽聽{
聽聽聽聽聽聽聽聽聽聽聽聽for (int i=0;i
聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽 if (fields[i].getType().equals(java.lang.String.class)){
聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽fields[i].setAccessible(true);
聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽fields[i].set(test, "This field have been changed!");
聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽}
聽聽聽聽聽聽聽聽聽聽聽聽}
聽聽聽
聽聽聽聽聽聽聽聽}
聽聽聽聽聽聽聽聽catch (Exception e)
聽聽聽聽聽聽聽聽{
聽聽聽聽聽聽聽聽}
聽聽聽聽聽聽聽聽test.myPrint();
聽聽聽聽}
}
榪愯緇撴灉鏄粈涔堝憿錛熸槸
Begin to test change.
This is ClassA
This field have been changed!
涔熷氨鏄錛屽湪TestChangeApp綾諱腑錛屽彲浠ヤ慨鏀笴lassA鐨勭鏈夋垚鍛樺彉閲忋?/P>