Servlets 找不到java servlet 404_Servlets_Http Status Code 404

Servlets 找不到java servlet 404

servlets

Servlets 找不到java servlet 404,servlets,http-status-code-404,Servlets,Http Status Code 404,servlet是 import javax.servlet.*; import javax.servlet.http.*; import java.io.*; public class ServletWriteHtml extends HttpServlet { public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException { PrintWri

servlet是

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;

public class ServletWriteHtml extends HttpServlet
{
public void doGet(HttpServletRequest request, HttpServletResponse response)
        throws IOException
{
    PrintWriter out = response.getWriter();
    java.util.Date today = new java.util.Date();
    out.println("html" +
                "<body>" +
                "<h1 align = center>Write Html<h1>"
                + "<br>" + today + "<body>" + "</html>");                        
        }
}

web.xml是

<?xml version="1.0" encoding="UTF-8"?>
<web-app id="file-upload" version="2.4" 
xmlns="http://java.sun.com/xml/ns/j2ee" 
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee 
         http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
    <servlet>
        <servlet-name>And</servlet-name>
        <servlet-class>ServletWriteHtml</servlet-class>
    </servlet>  
    <servlet-mapping>
        <servlet-name>ServletWriteHtml</servlet-name>
        <url-pattern>/Alfa</url-pattern>
    </servlet-mapping>
        <welcome-file-list>
            <welcome-file>index.html</welcome-file>
        </welcome-file-list>
</web-app>

网址是已编译servlet，类位于WEB-INF文件夹中

HTTP状态404-未找到类型状态报告找不到消息说明请求的资源不可用。 GlassFish Server开源版本4.1.1

servlet和servlet映射中的servlet名称应该相同

您需要给出类的完整路径，包括servlet类中的包

例如：

<servlet>
    <servlet-name>ServletWriteHtml</servlet-name>
    <servlet-class>my.packages.ServletWriteHtml</servlet-class>
</servlet>

您选择了命名servlet和。但是，您可以使用另一个名称来映射它：ServletWriteHtml。另外，不相关，但您的HTML无效。更改了web.xml，将ServletWriteHtml放在java包中仍然是相同的错误404未找到页面和Javas.ServletWriteHtml和/Alfa如果Javas是您的包，JavaWeb是您的项目，现在您的Servlet应该由http://localhost:8080/JavaWeb/Andchanged 仍然是404的url，还编译了ServletWriteHtml.java，并且类文件位于web inf folderI中。我对您的解决方案感到困惑，请仍然尝试404