帮忙看下面的代码,就是往JAVA BEAN中传参数,BEAN中接参数返回!
<%@ page contentType="text/html;charset=gb2312"%>
<html>
<head><title>增加商品分类</title></head>
<body><center>
<jsp:useBean id="categoryBean" class="ch08.b" scope="page" />
<%=
categoryBean.test("2")
%>
<p>
</center>
</body>
</html> package ch08;
public class b
{
public String test(String new1)
{
if (new1 == "1") return "test";
else return "test1";
}
} 就是不行呀,怎么办!
<%@ page contentType="text/html;charset=gb2312"%>
<html>
<head><title>增加商品分类</title></head>
<body><center>
<jsp:useBean id="categoryBean" class="ch08.b" scope="page" />
<%=
categoryBean.test("2")
%>
<p>
</center>
</body>
</html> package ch08;
public class b
{
public String test(String new1)
{
if (new1 == "1") return "test";
else return "test1";
}
} 就是不行呀,怎么办!
500 Servlet Exception
Note: sun.tools.javac.Main has been deprecated.
/jsps.jsp:7: Wrong number of arguments in method.
categoryBean.test("2")
^
1 error, 1 warning
我的JSP文件名为test.jsp
然后执行,http://127.0.0.1:8080/ch08/test.jsp
输出test1