此版本仍在开发中，尚未稳定。如需最新的稳定版本，请使用 Spring Framework 7.0.6！spring-doc.cadn.net.cn

Bean引用

如果评估上下文中已配置了bean解析器，您可以通过在表达式中使用@符号作为前缀来查找bean。以下示例展示了如何操作：spring-doc.cadn.net.cn

ExpressionParser parser = new SpelExpressionParser();
StandardEvaluationContext context = new StandardEvaluationContext();
context.setBeanResolver(new MyBeanResolver());

// This will end up calling resolve(context, "someBean") on MyBeanResolver
// during evaluation.
Object bean = parser.parseExpression("@someBean").getValue(context);
val parser = SpelExpressionParser()
val context = StandardEvaluationContext()
context.setBeanResolver(MyBeanResolver())

// This will end up calling resolve(context, "someBean") on MyBeanResolver
// during evaluation.
val bean = parser.parseExpression("@someBean").getValue(context)

如果Bean名称包含点（。）或其他特殊字符，你必须以字符串字面量的形式提供Bean的名称——例如，exampleBean.name。spring-doc.cadn.net.cn

要访问工厂Bean本身，应该使用&符号作为Bean名称的前缀。 以下示例显示了如何操作：spring-doc.cadn.net.cn

ExpressionParser parser = new SpelExpressionParser();
StandardEvaluationContext context = new StandardEvaluationContext();
context.setBeanResolver(new MyBeanResolver());

// This will end up calling resolve(context, "&someFactoryBean") on
// MyBeanResolver during evaluation.
Object factoryBean = parser.parseExpression("&someFactoryBean").getValue(context);
val parser = SpelExpressionParser()
val context = StandardEvaluationContext()
context.setBeanResolver(MyBeanResolver())

// This will end up calling resolve(context, "&someFactoryBean") on
// MyBeanResolver during evaluation.
val factoryBean = parser.parseExpression("&someFactoryBean").getValue(context)