今天下午學習使用hibernate，跟著視頻做，可是控制臺老報這個錯誤
02:03:12,171 WARN UserSuppliedConnectionProvider:23 - No connection properties specified - the user must supply JDBC connections
02:03:12,171 ERROR SchemaExport:202 - schema export unsuccessful
java.lang.UnsupportedOperationException: The user must supply a JDBC connection
at org.hibernate.connection.UserSuppliedConnectionProvider.getConnection(UserSuppliedConnectionProvider.java:30)
at org.hibernate.tool.hbm2ddl.ManagedProviderConnectionHelper.prepare(ManagedProviderConnectionHelper.java:28)
at org.hibernate.tool.hbm2ddl.SchemaExport.execute(SchemaExport.java:180)
at org.hibernate.tool.hbm2ddl.SchemaExport.create(SchemaExport.java:133)
at com.test.hibernate.ExportDB.main(ExportDB.java:15)
視頻就能運行成功，我的就不行，很是郁悶，
hibernate.cfg.xml配置如下：
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.connection.url ">jdbc:mysql:///localhost/hibernate_first</property>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.connection.password">root</property>
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
<mapping resource="com/test/hibernate/User.hbm.xml"/>
</session-factory>
</hibernate-configuration>
實體類User的映射文件配置：
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class name="com.test.hibernate.User">
<id name="id">
<generator class="uuid"/>
</id>
<property name="userName"/>
<property name="password"/>
<property name="createDate"/>
<property name="expireDate"/>
</class>
</hibernate-mapping>
下面是連接數據庫的類：
package com.test.hibernate;
import org.hibernate.cfg.Configuration;
import org.hibernate.tool.hbm2ddl.SchemaExport;
public class ExportDB {
public static void main(String[] args) {
Configuration cfg = new Configuration().configure();
SchemaExport export = new SchemaExport(cfg);
export.create(true, true);
}
}
希望路過高手不吝指導一下，感激不盡！！！！
1.到http://archive.apache.org/dist/jakarta/taglibs/standard/binaries/下載你所需的版本
2.將jstl.jar和standard.jar拷貝到WEB-INF目錄下的lib文件里
3.在WEB-INF目錄下新建一個tlds文件夾，將c.tld和c-rt.tld考進去
4.在web.xml文件配置你所用到的標簽如下：
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<taglib>
<taglib-uri>http://java.sun.com/jstl/core</taglib-uri>
<taglib-location>/WEB-INF/tlds/c.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>http://java.sun.com/jstl/core-rt</taglib-uri>
<taglib-location>/WEB-INF/tlds/c-rt.tld</taglib-location>
</taglib>
........................
</web-app>