Set property in Java bean class

问题

I have created a from which have a text field name 'empId' whose value is set into a bean class through a jsp page using <jsp:setProperty> tag

note:empId is of int type in bean class

when i write the following code

<jsp:setProperty name="mybean" property="empId" value="empId"/>

It will work fine but when i write the following code

<jsp:setProperty name="mybean" property="empId" value="<%=request.getParameter("empId")%>"/>

then it is not working gives the exception JasperException

回答1:

Use EL expression.

use ${param.empId} if you want to map request parameter.

<jsp:setProperty name="mybean" property="empId" value="${param.empId}"/>

PS: @Sheo you have to show exception stack trace.

回答2:

String employeeID = (String) request.getParameter("employeeID");

<jsp:setProperty value="<%=employeeID%>" ..../>

Hope it works :)

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来源：https://stackoverflow.com/questions/8666182/set-property-in-java-bean-class