MVC和JSP中的Javabean
我有一个java网站的MVC项目 我在Eclipse中编写代码,使用Tomcat和derby数据库 我有以下javabean:MVC和JSP中的Javabean,java,jsp,javabeans,Java,Jsp,Javabeans,我有一个java网站的MVC项目 我在Eclipse中编写代码,使用Tomcat和derby数据库 我有以下javabean: package collaboration; import java.sql.*; import org.apache.derby.jdbc.ClientDriver; public class Modello { private String tipoInfo; private String ur = "jdbc:derby:/User
package collaboration;
import java.sql.*;
import org.apache.derby.jdbc.ClientDriver;
public class Modello {
private String tipoInfo;
private String ur = "jdbc:derby:/Users/sample;create=true";
private String us = "ciao";
private String p = "ciao";
public Modello(){
this.tipoInfo = "sconosciuto";
}
public String getTipoInfo(){
return this.tipoInfo;
}
public void setTipoInfo(String tipoInfo){
this.tipoInfo = tipoInfo;
}
public String getCatalogo(){
String risultato = null;
try{
DriverManager.registerDriver(new ClientDriver());
Connection connect = DriverManager.getConnection(ur, us, p);
PreparedStatement statement = connect.prepareStatement("select titolo, autore, prezzo from libreria.libro");
ResultSet controllo = statement.executeQuery();
while(controllo.next()){
risultato += controllo.getString(1);
}
connect.close();
} catch(Exception e){
System.out.println(e);
}
return risultato;
}
public static void main(String[] args){
Modello ciao = new Modello();
System.out.println(ciao.getCatalogo());
}
}
如果我把这段代码作为java程序单独运行,它就可以正常工作。但如果我在Tomcat服务器的JSP页面中将其用作javabean,我会遇到以下问题:java.sql.SQLException:没有找到适合jdbc的驱动程序:derby:/Users/sample;create=true
这是我在JSP中用于javabean的代码
<%@page import="collaboration.Modello"%>
<jsp:useBean id="model" scope="page" class="collaboration.Modello" />
<jsp:setProperty name="model" property="*" />
<jsp:getProperty name="model" property="catalogo" />
怎么了?您是否将derby jdbc jar放在WEB应用程序的WEB-INF/lib文件夹中了?是的,我放了,但它仍然不起作用