HelloBean.java packages me.test; public class HelloBean { public String speak() { return "Hello, this is a programe for beginner. "; } }java me.test.HelloBean.java路径/WebRoot/WEB-INF/classes/me/test/HelloBean.class /WebRoot/hello.jsp <jsp:useBean id="helloBean" class="me.test.HelloBean" /> <%=helloBean.speak()%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>我的FAQ !</title>
</head>
<body>
<p><b>这是我的FAQ!</b></p>
<%@ page contentType="mimeType; charset=gb2312"%>
<%@ page language="java" import="java.sql.*" %><%
faq workM = new faq();
ResultSet RS = workM.executeQuery("SELECT * FROM faq");
String tt;
while (RS.next()) {
tt = RS.getString("Answer");
out.print("<LI>" + RS.getString("Subject") + "</LI>");
out.print("<pre>" + tt + "</pre>");
}
RS.close();
%>
</body>
</html>
faq是什么?
packages me.test;
public class HelloBean {
public String speak() {
return "Hello, this is a programe for beginner. ";
}
}java me.test.HelloBean.java路径/WebRoot/WEB-INF/classes/me/test/HelloBean.class
/WebRoot/hello.jsp
<jsp:useBean id="helloBean" class="me.test.HelloBean" />
<%=helloBean.speak()%>
import java.sql.*;
public class faq {
String sDBDriver = "sun.jdbc.odbc.JdbcOdbcDriver";
String sConnStr = "jdbc:odbc:faq";
Connection conn = null;
ResultSet rs = null; public faq() {
try {
Class.forName(sDBDriver);
}catch(java.lang.ClassNotFoundException e) {
System.err.println("faq(): " + e.getMessage());
}
} public ResultSet executeQuery(String sql) {
rs = null;
try {
conn = DriverManager.getConnection(sConnStr);
Statement stmt = conn.createStatement();
rs = stmt.executeQuery(sql);
}catch(SQLException ex) {
System.err.println("aq.executeQuery: " + ex.getMessage());
}
return rs;
}
}
代码如下:
jsp页面:<%@ page import="com.qingtian.mpgs.HelloBean" %>
<%--引入你这个类,我的HelloBean类在com.qingtian.mpgs包下,楼主导入自己的包就行--%>
<%
String hello = ""; //先定义一个变量用于接收你要输出的信息
HelloBean hellobean = new HelloBean();//new一个新对象,你才能使用speak()这个方法
hello = hellobean.speak();
out.print(hello);
%>楼主还是去看一下相关的书籍去提高自己,建议 Jsp 宝典 这本书 ,还可去下些视频看下,光学jsp是不够的,多学习一些框架!