运行时配置Hibernate [英] Hibernate configuration on runtime

问题描述

我有hibernate.cfg.xml文件。

 < session-factory> 
 
 <！ - 数据库连接设置 - > 
< property name =connection.driver_class> com.mysql.jdbc.Driver< / property> 
< property name =connection.url>< / property> 
< property name =connection.username>< / property> 
< property name =connection.password>< / property> 
 
 <！ -  JDBC连接池（使用内置） - > 
< property name =connection.pool_size> 1< / property> 
  

.....................

这是文件中最有趣的部分。
现在我必须设置缺失值：网址，用户名，密码。
我想这样做：

  public static void SetSessionFactory（）{
 try {
 
 AnnotationConfiguration conf = new AnnotationConfiguration（）。configure（）; 
 //<！ - 数据库连接设置 - > 
 conf.setProperty（connection.url，URL）; 
 conf.setProperty（connection.username，USERNAME）; 
 conf.setProperty（connection.password，PASSWORD）; 
 SESSION_FACTORY = conf.buildSessionFactory（）; 
 
} catch（Throwable ex）{
 //记录异常！ 
抛出新的ExceptionInInitializerError（ex）; 
 
 
 $ / code> 

但它只是从hibernate.cfg加载我的配置。 xm并且不要更改任何属性......

url，username，passoword - 是命令行参数，所以我必须在运行时设置它们。 $ b

解决方案

试着在这里调用 conf.configure（）; b属性可能需要有hibernate前缀，如hibernate.connection.username

希望它有帮助。

I have hibernate.cfg.xml file.

<session-factory>

    <!-- Database connection settings -->
    <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
    <property name="connection.url"></property>
    <property name="connection.username"></property>
    <property name="connection.password"></property> 

    <!-- JDBC connection pool (use the built-in) -->
    <property name="connection.pool_size">1</property>

.....................

This is the most interesting part of file. Now i must set missing values: url, username, password. I'm trying to do in such way:

public static void SetSessionFactory() {
    try {

      AnnotationConfiguration conf = new AnnotationConfiguration().configure();
      // <!-- Database connection settings -->
      conf.setProperty("connection.url", URL);
      conf.setProperty("connection.username", USERNAME);
      conf.setProperty("connection.password", PASSWORD);
      SESSION_FACTORY = conf.buildSessionFactory();

    } catch (Throwable ex) {
      // Log exception!
      throw new ExceptionInInitializerError(ex);
    }
  }

But it just loads my configuration from hibernate.cfg.xm and do not changing any property...

url, username, passoword - are command-line arguments so i must set them on runtime.

解决方案

Try to call conf.configure(); here.
And properties may need to have hibernate prefix like "hibernate.connection.username"
Hope it helps.

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