import org.springframework.beans.factory.BeanExpressionException; //导入依赖的package包/类
/**
 * Chained three levels.
 */
@Test
public void chainedError2() {

    final ErrorResponse response = new ErrorResponse(new BeanExpressionException("ahem", new IllegalStateException(new GeneralSecurityException())), mock(UriInfo.class), true);
    assertNotNull(response.getStackTrace());
    assertNotNull(response.getCause());
}
 

import org.springframework.beans.factory.BeanExpressionException; //导入依赖的package包/类
public Object evaluate(String value, BeanExpressionContext evalContext) throws BeansException {
	if (!StringUtils.hasLength(value)) {
		return value;
	}
	try {
		Expression expr = this.expressionCache.get(value);
		if (expr == null) {
			expr = this.expressionParser.parseExpression(value, this.beanExpressionParserContext);
			this.expressionCache.put(value, expr);
		}
		StandardEvaluationContext sec = this.evaluationCache.get(evalContext);
		if (sec == null) {
			sec = new StandardEvaluationContext();
			sec.setRootObject(evalContext);
			sec.addPropertyAccessor(new BeanExpressionContextAccessor());
			sec.addPropertyAccessor(new BeanFactoryAccessor());
			sec.addPropertyAccessor(new MapAccessor());
			sec.addPropertyAccessor(new EnvironmentAccessor());
			sec.setBeanResolver(new BeanFactoryResolver(evalContext.getBeanFactory()));
			sec.setTypeLocator(new StandardTypeLocator(evalContext.getBeanFactory().getBeanClassLoader()));
			ConversionService conversionService = evalContext.getBeanFactory().getConversionService();
			if (conversionService != null) {
				sec.setTypeConverter(new StandardTypeConverter(conversionService));
			}
			customizeEvaluationContext(sec);
			this.evaluationCache.put(evalContext, sec);
		}
		return expr.getValue(sec);
	}
	catch (Exception ex) {
		throw new BeanExpressionException("Expression parsing failed", ex);
	}
}