关于dubbo+shiro导致dubbo无法注入到Realm的问题解决方案
问题的原因加载顺序引起的。
方案一:用spring-dubbo配置文件的形式, 这个注入应该没问题
主要说方案二:采用dubbo注解@Reference注入, 在实际情况中, 由于shiro和dubbo加载顺序的原因, 会导致使用@Reference的bean注入到Realm中为null, 故在其他地方可以引用 该dubbo bean, 然后转化为spring bean,再用spring上下文调用即可得到转化后的dubbo bean即可。(配置文件的形式会 先把dubbo bean转化为spring bean, 再采用@Autowired注入在加载顺序上不会和dubbo冲突, 故可以成功注入)
方法:
1. 在Controller上引用该dubbo bean
@Reference(version = "1.0.0")
IAccountService iAccountService;
@Bean(name = "iAccountService")
public IAccountService getIAccountService(){
return iAccountService;
}
2.添加上下文工具类
@Component
public class SpringBeanFactoryUtils implements ApplicationContextAware {
private static ApplicationContext context = null;
public static <T> T getBean(Class<T> type) {
return context.getBean(type);
}
public static <T> T getBean(String name, Class<T> type) {
return context.getBean(name, type);
}
@Override
public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
System.err.println("SpringBeanFactoryUtils be inited...");
if (SpringBeanFactoryUtils.context == null) {
SpringBeanFactoryUtils.context = applicationContext;
}
}
}
3.在Realm中引用bean
public class MyShiroRealm extends AuthorizingRealm {
@Override
protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
String userName = (String) token.getPrincipal();
IAccountService iAccountService = SpringBeanFactoryUtils.getBean("iAccountService",IAccountService.class);
Account account = iAccountService.selectAccountByLogin(userName, null);
if (account == null) {
throw new UnknownAccountException();// 用户名密码不正确
}
。。。。。。