用于所有数据源连接的连接池类.它有一个静态枚举来指示连接类型.
class ConnectionPool {
public static enum Type {
t1,t2,t3;
}
…
}
@H_404_7@另一个类没有默认承包商,构造函数将Type作为承包商参数
class Update {
public Update(Type type) {
this.type = type;
}
...
}
@H_404_7@在applicationContext.xml中,定义一个bean
<bean id="update" class="package.Update">
<contructor-arg type="package.ConnectionPool.Type">
<value>Type.t1</value>
</contructor-arg>
</bean>
@H_404_7@但是我得到了
Error creating bean with name 'update' defined in class path resource [applicationContext.xml]: Unsatisfied dependency expressed through constructor argument with index 0 of type [package.ConnectionPools$PoolType]: Ambiguous constructor argument types - did you specify the correct bean references as constructor arguments?
@H_404_7@最佳答案
这应该工作：
<bean id="update" class="package.Update">
<contructor-arg type="package.ConnectionPool.Type">
<value>t1</value>
</contructor-arg>
</bean>
@H_404_7@甚至：
<bean id="update" class="package.Update">
<contructor-arg type="package.ConnectionPool.Type" value="t1"/>
</bean>
@H_404_7@或我最喜欢的：
@Configuration
public class Config {
@Bean
public Update update() {
return new Update(t1);
}
}
@H_404_7@