我已经在 UML 中实现了 Spring 状态机,并且正在尝试实现一个连接池。 我的配置类是
@Configuration
public class CambodiaStateMachine {
@Autowired
private ApplicationContext appContext;
@Bean
public StateMachineListener<String, String> listener() {
return new StateMachineListenerAdapter<String, String>() {
@Override
public void stateChanged(State<String, String> from, State<String, String> to) {
System.out.println("State change to " + to.getId());
}
};
}
@Bean(name = "stateMachineTarget")
@Scope(scopeName="prototype")
public StateMachine<String, String> stateMachineTarget() throws Exception {
Builder<String, String> builder = StateMachineBuilder.<String, String>builder();
builder.configureConfiguration()
.withConfiguration()
.machineId("cambodia")
.autoStartup(true);
builder.configureModel().withModel().factory(modelFactory());
builder.configureConfiguration().withConfiguration().beanFactory(appContext.getAutowireCapableBeanFactory());
return builder.build();
}
@Bean
public StateMachineModelFactory<String, String> modelFactory() {
return new UmlStateMachineModelFactory("classpath:stm/model.uml");
}
@Bean
public CommonsPool2TargetSource poolTargetSource() {
CommonsPool2TargetSource pool = new CommonsPool2TargetSource();
pool.setMaxSize(10);
pool.setTargetBeanName("stateMachineTarget");
return pool;
}
@Bean
@Scope(value = "request", proxyMode = ScopedProxyMode.TARGET_CLASS)
public ProxyFactoryBean stateMachine() {
ProxyFactoryBean pfb = new ProxyFactoryBean();
pfb.setTargetSource(poolTargetSource());
return pfb;
}
}
我收到一个错误
Caused by: java.lang.IllegalStateException: Cannot create scoped proxy for bean 'scopedTarget.stateMachine': Target type could not be determined at the time of proxy creation
。 现在我尝试使用它并删除了
proxyMode = ScopedProxyMode.TARGET_CLASS
错误不再存在,但未观察到预期行为。没有游泳池,只有一台机器在运行。
我见过这个错误 here但没有看到解决办法。
最佳答案
该问题链接到 https://jira.spring.io/browse/SPR-15042 。检查 Spring 框架版本,因为存在回归,因为这适用于 4.3.3 和 4.3.6,但不适用于 4.3.4、4.3.5。
关于java - Spring状态机池错误,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/43782148/