A BeanPostProcessor将以处理所有beanApplicationContext，这样，您可以添加其他配置，或者根据需要完全替换它。
您可以创建一个BeanPostProcessor将属性添加到已配置的DataSource。commons- dbcp如果您相应地使用其他DataSource修改，则下面的示例假定使用1或2 。
public class DataSourceConfiguringBeanPostProcessor implements BeanPostProcessor {
private final Map<String,String> properties = new HashMap<>;
public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
if (bean instance BasicDataSource ) {
for (Map.Entry<String, String> prop : properties.entrySet()) {
((BasicDataSource) bean).addConnectionProperty(prop.getKey(), prop.getValue());
}
}
return bean;
}
public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
return bean;
}
public void setProperties(Map<String, String> properties) {
this.properties.putAll(properties);
}
}
现在，您可以将其添加到配置中，它将属性添加到DataSourcebean。
@Bean
public BeanPostProcessor dataSourcePostProcessor() {
DataSourceConfiguringBeanPostProcessor processor = new DataSourceConfiguringBeanPostProcessor();
Map<String, String> properties = new HashMap<>();
properties.put("defaultRowPrefetch", "15");
properties.put("defaultBatchValue", "25");
processor.setProperties(properties);
return processor;
}
这应该可以完成配置数据源的技巧。
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