Java中连接数据的Hibernate配置
Java中连接数据的Hibernate
配置
hibernate.cfg.xml
<?xml version="1.0" encoding="utf-8" ?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<!-- properties -->
<!--
<property name="dialect">org.hibernate.dialect.SQLServerDialect</property>
<property name="connection.driver_class">com.microsoft.jdbc.sqlserver.SQLServerDriver</property>
<property name="connection.url">jdbc:microsoft:sqlserver://192.168.0.118;databasename=saadmin</property>
<property name="connection.username">sa</property>
<property name="connection.password">saadmin</property>
-->
<property name="dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="connection.url">jdbc:mysql://192.168.0.117:3306/mysqldb?useUnicode=true&characterEncoding=gb2312</property>
<property name="connection.username">root</property>
<property name="connection.password">adminroot</property>
<property name="hibernate.c3p0.acquire_increment">1</property>
<property name="hibernate.c3p0.idle_test_period">0</property>
&nb
相关文档:
1. Java保存的文件名必须与类名一致;
2. 如果文件中只有一个类,文件名必须与类名一致;
3. 一个Java文件中只能有一个public类;
4. 如果文件中不止一个类,文件 ......
http://blog.csdn.net/ycyangcai/archive/2009/06/21/4285997.aspx
1.声明一个map: Map map = new HashMap();
2.向map中放值,注意:map是key-value的形式存放的.如:
map.put("sa","dd");
3.从map中取值:String str = map.get("sa").toString();结果是:str = "dd";
4.遍历一个map,从 ......
Map map = new HashMap();
Iterator it = map.entrySet().iterator();
while (it.hasNext()) {
Map.Entry entry = (Map.Entry) it.next();
Object key = entry.getKey();
Object value = entry.getValue();
}
......
Caused by: java.sql.SQLException: ORA-00918: column ambiguously defined
Caused by: com.ibatis.common.jdbc.exception.NestedSQLException:
--- The error occurred in com/ibatis/jpetstore/persistence/sqlmapdao/sql/Item.xml.
--- The error occurred while applying a parameter map.&nbs ......
使用jinvoke调用windowsAPI。jna使用比较麻烦,需要写c代码和参数转换,jinvoke的使用就像jdk中的包一样。
官网使用参考:http://www.jinvoke.com/calling-the-win32-api-from-java
一个弹出框的例子(这种代码用于调用任何dll,不只是windows的,也可以是自己写的dll)
import com.jinvoke.JInvoke;
import com.jinvok ......