hibernate新手求助！！

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！！！！

posted @ 2008-12-30 02:23 anyStar 閱讀(1782) | 評論 (8) | 編輯 收藏

為什么我的myeclipse沒有創建Hibernate Mapping File的選項？

如題，我裝的是6.5的

posted @ 2008-10-14 21:32 anyStar 閱讀(1609) | 評論 (2) | 編輯 收藏

jstl的配置

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>

 

posted @ 2008-09-18 20:30 anyStar 閱讀(1652) | 評論 (3) | 編輯 收藏