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我上的作業,要求執行的Tomcat6服務器要導入類JSP中的Tomcat6
上的webapps在我已經運行Ant構建其產生TitlesBean JSP文件
<%@
page language = "java"
import = "org.me.webapps.Bookstore.TitlesBean, java.util.*"
session = "true"
%>
<!-- begin document -->
<html xmlns = "http://www.w3.org/1999/xhtml">
<body>
<%-- begin JSP scriptlet to create list of books --%>
<%
TitlesBean titlesBean = new TitlesBean();
List titles = titlesBean.getTitles();
BookBean currentBook;
// store titles in session for further use
session.setAttribute("titles", titles);
....
工作。但是,當我瀏覽jsp頁面時,出現如下錯誤,看起來像服務器無法找到或導入.class文件文件
org.apache.jasper.JasperException: Unable to compile class for JSP:
An error occurred at line: 6 in the generated java file
Only a type can be imported. org.me.webapps.bookstore.TitlesBean resolves to a package
An error occurred at line: 32 in the jsp file: /war/books2.jsp
TitlesBean cannot be resolved to a type
29:
30: <%-- begin JSP scriptlet to create list of books --%>
31: <%
32: TitlesBean titlesBean = new TitlesBean();
33: List titles = titlesBean.getTitles();
34: BookBean currentBook;
.....
的TitlesBean.java
// TitlesBean.java
// Class TitlesBean makes a database connection and retrieves
// the books from the database.
package org.me.webapps.bookstore;
// Java core packages
import java.io.*;
import java.sql.*;
import java.util.*;
import java.net.*;
public class TitlesBean implements Serializable {
private static final long serialVersionUID = 6723471178342776147L;
private Connection connection;
private PreparedStatement titlesQuery;
// construct TitlesBean object
public TitlesBean() {
// attempt database connection and setup SQL statements
try {
URL myUrl = getClass().getResource("TitlesBean.class");
System.out.println(getDatabasePath(myUrl.toString()));
Class.forName("org.hsqldb.jdbcDriver");
connection = DriverManager.getConnection("jdbc:hsqldb:hsql://localhost/bookdb", "sa", "");
titlesQuery = connection
.prepareStatement("SELECT isbn, title, editionNumber, "
+ "copyright, publisherID, imageFile, price "
+ "FROM titles ORDER BY title");
}
// process exceptions during database setup
catch (SQLException sqlException) {
sqlException.printStackTrace();
}
// process problems locating data source
catch (Exception exception) {
exception.printStackTrace();
}
}
// return a List of BookBeans
public List<BookBean> getTitles() {
List<BookBean> titlesList = new ArrayList<BookBean>();
// obtain list of titles
try {
ResultSet results = titlesQuery.executeQuery();
// get row data
while (results.next()) {
BookBean book = new BookBean();
book.setISBN(results.getString("isbn"));
book.setTitle(results.getString("title"));
book.setEditionNumber(results.getInt("editionNumber"));
book.setCopyright(results.getString("copyright"));
book.setPublisherID(results.getInt("publisherID"));
book.setImageFile(results.getString("imageFile"));
book.setPrice(results.getDouble("price"));
titlesList.add(book);
}
} catch (SQLException exception) {
exception.printStackTrace();
}
return titlesList;
}
private String getDatabasePath(String classPath) {
String path = "";
String crtToken;
StringTokenizer tokens = new StringTokenizer(classPath, "/");
int num = tokens.countTokens();
tokens.nextToken();
for (int i = 1; i < num; i++) {
crtToken = tokens.nextToken();
if (crtToken.equals("classes")) {
break;
}
path = path + crtToken + "\\";
}
return path;
}
// close statements and terminate database connection
protected void finalize() {
// attempt to close database connection
try {
connection.close();
}
// process SQLException on close operation
catch (SQLException sqlException) {
sqlException.printStackTrace();
}
}
}
的tomcat的設置應該是罰款,我可以爲他們不需要進口遠跑帶環或條件一些簡單的JSP文件。我還應該嘗試什麼?
我想在進口JSP應該be'import =「org.me.webapps.bookstore.TitlesBean」'你有資本'B'在書店 – kaysush 2013-03-02 12:42:36