org.apache.jasper.JasperException: An exception occurred processing JSP page /customerDelete.jsp at line 39
java.lang.NullPointerException
sun.jdbc.odbc.JdbcOdbcPreparedStatement.clearParameter(Unk
所以我有它创建了一个简单的图书馆在线目录的数据库架构一个简单的SQL脚本: DROP TABLE book_copies;
/
DROP TABLE books_authors_xref;
/
DROP TABLE authors;
/
DROP TABLE books;
/
CREATE TABLE books (
isbn VARCHAR2(13) NOT NULL PRIM