【code】
Servlet程序代碼如下:
//HelloServlet.java
package edu.zt.servlet;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
class HelloServlet extends HttpServlet
{
public void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException
{
PrintWriter out = resp.getWriter();
out.println("<html>");
out.println("<head><title>hello</title></head>");
out.println("<body>");
out.println("<h1><font color=\"red\">Hello World</font></h1>");
out.println("</body>");
out.println("</html>");
out.close();
}
}
配置Servlet
//web.xml
<servlet>
<servlet-name>helloservlet</servlet-name>
<servlet-class>edu.zt.servlet.HelloServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>helloservlet</servlet-name>
<url-pattern>/helloservlet</url-pattern>
</servlet-mapping>
|
【問題描述】
http:localhost:8080/demo/helloservlet訪問該Servlet時出現以下錯誤信息:
IllegalAccessException: Class StandardWrapper can not access HelloServlet class with modifier xxx
【原因與解決方案】
HelloServlet 的類修飾符爲包可見,所以StandardWrapper無權訪問HelloServlet 。
將HelloServlet 的類修飾符改爲public即可。