Spring @RefreshScope 对最终 class ComboPooledDataSource 不起作用

Question

我正在使用 CGLib (AOP) 代理。当 ComboPooledDataSource 是 final class 时是否有任何解决方法，因为 @RefreshScope 在 final class 上不起作用？

@Bean(name = "portalDataSource", destroyMethod = "close")
@RefreshScope
public DataSource dataSource() Integer iMaxConTimeout) throws Exception {
    ComboPooledDataSource cpds = new ComboPooledDataSource();
    cpds.setDriverClass("com.mysql.jdbc.Driver"); //loads the jdbc driver  
    cpds.setJdbcUrl("....");
    cpds.setUser("...");
    cpds.setPassword("...");


    // the settings below are optional -- c3p0 can work with defaults
    cpds.setMinPoolSize(iMinDBCons);
    cpds.setMaxPoolSize(iMaxDBCons);
    cpds.setMaxIdleTime(iMaxConTimeout);    
    return cpds;
}

最后的 class ComboPooledDataSource 是 c3p0 连接池的一部分。

<!-- Hibernate c3p0 connection pool -->
<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-c3p0</artifactId>
    <version>5.0.4.Final</version>
</dependency>

Answer 1

第 1 步：创建一个 class 名为 SigComboPooledDataSource

public class SigComboPooledDataSource extends TransactionAwareDataSourceProxy {

    @Autowired
    // Inject your class by constructor
    SigComboPooledDataSource(ComboPooledDataSource dataSource) {
        super.setTargetDataSource(dataSource);
    }

    public void close() {
         ((ComboPooledDataSource) super.getTargetDataSource()).close();
    }

}

步骤 2

@Bean(name = "portalDataSource", destroyMethod = "close")
@RefreshScope
public DataSource dataSource() Integer iMaxConTimeout) throws Exception {

    ComboPooledDataSource cpds = new ComboPooledDataSource();    
    cpds.setDriverClass("com.mysql.jdbc.Driver"); //loads the jdbc driver      
    cpds.setJdbcUrl("....");    
    cpds.setUser("...");
    cpds.setPassword("...");   
    cpds.setPassword("...");

    // the settings below are optional -- c3p0 can work with defaults
    cpds.setMinPoolSize(iMinDBCons);
    cpds.setMaxPoolSize(iMaxDBCons);
    cpds.setMaxIdleTime(iMaxConTimeout);    
    return new SigComboPooledDataSource(cpds);
}

Spring @RefreshScope 对最终 class ComboPooledDataSource 不起作用

Spring @RefreshScope does not work on final class ComboPooledDataSource

spring

c3p0

第 1 步：创建一个 class 名为 SigComboPooledDataSource

步骤 2