运行JSP页面出错：Can't find a method to write property 'message' of type 'java.lang.Str

运行JSP页面出错：org.apache.jasper.JasperException: Can't find a method to write property 'message' of type 'java.lang.String' in a bean of type 'com.inspiresky.bean.Hello'
org.apache.jasper.runtime.JspRuntimeLibrary.internalIntrospecthelper(JspRuntimeLibrary.java:370)
org.apache.jasper.runtime.JspRuntimeLibrary.introspecthelper(JspRuntimeLibrary.java:308)
org.apache.jsp.mytest_jsp._jspService(mytest_jsp.java:66)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:384)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.10 logs.
我一共建了2个文件： Hello.java： package com.inspiresky.bean;public class Hello {
 private String message = "12345";
 public String getMessage(){
 return message;

 }
 public void setMessgae(String message){
 this.message =message;
 }
}
 mytest.jsp： <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><jsp:useBean id="hello" class="com.inspiresky.bean.Hello" scope="page" />
<jsp:setProperty name="hello" property="message" value="12345"/><html>
 <head>


 <title>My JSP 'mytest.jsp' starting page</title>

<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
 </head>

 <body>
 <jsp:getProperty name="hello" property="message" /> 
 This is my JSP page. 
 </body>
</html>
请问大家是什么问题？

解决方案 »

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我一共建了2个文件： Hello.java： package com.inspiresky.bean;public class Hello {
 private String message = "12345";
 public String getMessage(){
return message;

 }
 public void setMessgae(String message){
this.message =message;
 }
}
 mytest.jsp： <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><jsp:useBean id="hello" class="com.inspiresky.bean.Hello" scope="page" />
<jsp:setProperty name="hello" property="message" value="12345"/><html>
 <head>


 <title>My JSP 'mytest.jsp' starting page</title>

<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
 </head>

 <body>
 <jsp:getProperty name="hello" property="message" /> 
 This is my JSP page. 
 </body>
</html>
我标红的地方不是message属性还有 setProperty 吗？
你setProperty的时候对象弄错了吧   设置的不是message这个属性而是hello这个对象
<jsp:getProperty name="hello" property="message" /> name 应该对应的是类里的属性吧
也就是 message
那你的意思是说，name="message"  property="message"? name 和 property 都是message？
后台是按name属性接收值的。。所以name改成message就Ok了。
那还用后面的property 干嘛？
这个值一般是用于对对象的属性赋值的。。如果你Name是一个对象，property里面指出它的属性名。在后台就会自动对这个对象的属性做赋值。应该是这样的
Hello.java 中，   public void setMessgae(String message){
       this.message =message;
   }这个方法的名字出错，不是  setMessgae ，  而是 setMessage
然后最好加上无参构造函数，使当tomcat或者其他容器加载创建时不会出错！