el

问题 I'm trying to use expression languge to generate ISO string in Nifi getMongo Query field using following query, { "remindmeDate": { "$gte": "${now():format("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'",'GMT')}", "$lte": "${now():toNumber():plus(359999):format("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'",'GMT')}" } } But i'm getting invalid JSON error error as double quotes are not escaped. When we try to escape it using \ operator, nifi is not evaluating the expression language. Is there any method or workaround to get

问题 Setup: Apache Tomcat 5.5 Servlet/JSP: 2.4/2.0 according to http://tomcat.apache.org/whichversion.html JSTL in .WAR: 1.2 But I still get a java.lang.NoClassDefFoundError: javax/el/ELException From what I have understood by reading question here at SO is that the ELException class has been moved and the container should include it. Previously in JSTL 1.1 it was provided in the JSTL .jar. Since the container is JSP 2.0 I am confused about this. 回答1: From what I have understood by reading

问题 In a Struts 2 project, consider below key in message resources: export.filename.accountsummary=customer ${export} The action has export filed with setter and getter. If you call the getText("export.filename.accountsummary") struts will automatically call the getExport() and fill it with correct value. (I think that struts use OGNL too lookup the resource messages that are endorse with ${} ) Is this correct ?! I try to use customer ${#sessionScope.CurrentUser.userName} an expected that struts

问题 This question already has answers here : Invoke direct methods or methods with arguments / variables / parameters in EL (2 answers) Closed 3 years ago . I'm trying to call a function from a JSF 2.0 page in my backing bean passing a dynamic parameter. It works fine as long as im passing a static string, but when I try using a dynamic one, I always get an EL parsing error. I guess its a syntax problem, but I can't think of another way to do this using method expression. I know that I could do

问题 When I read Spring PetClinic sample application, I found they always put the add and modify functionalities into a single JSP file, and they use ${owner['new']} expression to customize elements on current page, for example " New Owner" or "Owner" for a label. Are there any other usages of [] operator in JSP (Spring) environment? The Controller file has the following snippet: @RequestMapping(value = "/owners/new", method = RequestMethod.GET) public String initCreationForm(Map<String, Object>

问题 I've been using this.$el all over my backbone app like so: render: function() { this.$el.html(this.template); }, then I saw code online that uses: render: function() { var dict = this.model.toJSON(); var html = this.template(dict); $(this.el).append(html); } What is the difference between the two? 回答1: If you call $(this.el), your just keep executing the jquery selector to get the same jquery object. '$el' is the cached version of $(this.el) 来源： https://stackoverflow.com/questions/19013531

问题 Recently I upgraded my development tomcat from 7.0.0 to 7.0.4. I had things like: <c:set var="static" value=".." /> <c:set var="class" value=".." /> Both worked on 7.0.0 but stopped working on 7.0.4. I opened a bug, it was closed, with the answer that: In and of itself, that tag will compile. The checks for Java identifiers were added to the EL processing so I suspect you have some illegal EL elsewhere on the page. This didn't sound quite clear, but I didn't get a subsequent answer, so I

问题 I have this behaviour I do not really understand ${someVar} ${someVar.class.name} ${someVar == 'error'} outputs false java.lang.Boolean true How can it be exlpained? What it the correct way to write the test in order to first test if the two 'things' have the same type and then if their value is the same? 回答1: This is the behaviour of the language as defined in the EL specification: A {==,!=,eq,ne} B other rules elided If A or B is Boolean coerce both A and B to Boolean, apply operator Coerce

问题 the logic is somehow like this: <c:set var="vehicle" value="car"> <c:set var="car" value="ferrari"> since the value of ${vehicle} = "car" which is also the name of the variable with the value of "ferrari" i access it indirectly using ${'${vehicle}'} but it doesn't seem to work. Can someone help me with this. thanks 回答1: This kind of things doesn't usually work in java (there's no eval statement). In this case however, the variables are bound to the request context, so I guess you could access

问题 the logic is somehow like this: <c:set var="vehicle" value="car"> <c:set var="car" value="ferrari"> since the value of ${vehicle} = "car" which is also the name of the variable with the value of "ferrari" i access it indirectly using ${'${vehicle}'} but it doesn't seem to work. Can someone help me with this. thanks 回答1: This kind of things doesn't usually work in java (there's no eval statement). In this case however, the variables are bound to the request context, so I guess you could access