在ICE中Bean只能初始化一次,当属性性值改变了,重新初始化时,可以
FacesContext facesContext= FacesContext.getCurrentInstance();
ELContext elContext = facesContext.getELContext();
TestBean bean = (TestBean )facesContext.getApplication().
getExpressionFactory().
createValueExpression(elContext,"#{TestBean }",
TestBean .class).getValue(elContext);
bean:即为bean对象,可以对他的属性进行改值。