从jsp调用bean方法 [英] Invoke bean method from jsp
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问题描述
我想知道如何从jsp调用bean方法. 就像是.在按钮[Hey]上单击，我要打印"Hello world". 谢谢.
I would like to know how to Invoke bean method from jsp. something like. On click of button [Hey] i would like to print "Hello world". Thank you.
推荐答案
Go ahead with JSF. Here's how your requirement would look like:
查看(test.xhtml)
<!DOCTYPE html>
<html lang="en"
xmlns="http://www.w3.org/1999/xhtml"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:ui="http://java.sun.com/jsf/facelets"
>
<h:head>
<title>JSF Hello World</title>
</h:head>
<h:body>
<h:form>
<h:commandButton value="Hey" action="#{bean.hey}">
<f:ajax render=":result" />
</h:commandButton>
</h:form>
<h:outputText id="result" value="#{bean.result}" />
</h:body>
</html>
型号(Bean.java)
@ManagedBean
@RequestScoped
public class Bean {
private String result;
public void hey() {
result = "Hello World!";
}
public String getResult() {
return result;
}
}
就是这样.
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