java·â×°ÀÛµÄÓ÷¨ - Java / JavaÏà¹Ø
objectÖеÄinteger string double µÈ×öÒýÓÃÀàÐÍʱÔõôÓà ËûÃǵķ½·¨ÔõôÓÃ
´óÏÀÃǰï°ïæ°É£¡
ÇëÎÊAPI..ÊÇʲôӴ
Äøö·ÖÊý×ßÈË
»Ø¸´#2Â¥£ºAPI¼´Application Programming Interface
ÇëÂ¥Ö÷µ½www.java.sun.com×Ô¼ºÏ¸öJavadocÎĵµ°É£¬ÀïÃæ½éÉܵĺÜÈ«
Ïà¹ØÎÊ´ð£º
JSPÒ³ÃæÖÐÓжà¸öradio°´Å¥
JSPÒ³Ãæ½«²ÎÊýPOST¸øservlet
ÒªÇóÈçÏÂ;
1.Ñ¡ÔñÒ»¸öradio£¬µ÷ÓÃservlet servletÖиù¾Ý²ÎÊýµ÷ÓÃÆäËû½Ó¿Ú£¬³ý·ÇÑ¡ÖиÃradio²¢µã»÷JSPÖеÄʵР......
org.apache.jasper.JasperException: Unable to compile class for JSP:
An error occurred at line: 52 in the jsp file: /vip_info.jsp
ÕË cannot be resolved
49: <table border="1& ......
ÎÒÊǸöÐÂÊÖ£¬Íû¸ßÊÖ½â´ð
ÎÒÏÖÔÚÒѾ°²×°ÁËmysql£¬Ò²ÓÐmysqlµÄjdbc¡£µ«ÎÒÔõôÅäÖú󣬲ÅÄÜÔÚMyEclipseÀï²Ù×÷mysqlÄØ£¿Çë¸ßÊÖ˵Ïêϸµã
´ò¿ªMyeclipse----window---open perspective---MyEclipse database explorer-- ......
¾ÍÊǼòµ¥µÄ´«ÖµºÍȡֵ
ÇëÎÊÂ¥Ö÷ÏëÎÊʲô£¿
jspÒ³Ãæ²ÉÓÃ±íµ¥»òÕßjavabean´«Öµ¶¼¿ÉÒÔ£¬Ê¹ÓÃrequest.getParameter()»ñµÃʹÓÃ±íµ¥´«¹ýÀ´µÄÖµ¡£
ÎÊÎÊÌ⣬ÏȰÑÎÊÌâ˵Çå³þµã£¡£¡ ÎÊÌâ̫ģºý£¡£¡
ÎÊÎÊÌ⣬ÏȰÑÎ ......
Java code:
......
synchronized(user){
int loginNum = Integer.parseInt(Main_Client_Dia.jtf2.getText().trim());
Main_Client_Dia.jtf2.setText("");
loginNum++;
......