Good habits of configuration files in spring

One of the good habits of configuration files in spring is to configure data drivers in spring. Write down the key part of the init. properties file, such

Datasource. driverclassname = org. gjt. Mm. MySQL. Driver
.......

Hibernate. dialect = org. hibernate. dialect. mysqldialect
Hibernate. JDBC. batch_size = 25
Hibernate. JDBC. fetch_size = 50
Hibernate. show_ SQL = true
Hibernate. hbm2ddl. Auto = none
In applicationcontext. XML, you can write

<Beans>
<Bean id = "placeholderconfig"
Class = "org. springframework. Beans. Factory. config. propertyplaceholderconfigurer">
<Property name = "locations">
<List>
<Value> WEB-INF/init. properties </value>
</List>
</Property>
</Bean>

<Bean id = "datasource"
Class = "org. Apache. commons. DBCP. basicdatasource">
<Property name = "driverclassname">
<Value >$ {datasource. driverclassname} </value>
</Property>
<Property name = "url">
<Value >$ {datasource. url} </value>
</Property>

,.....
</Bean>