我在 eclipse 看到教程的 java 文件中编写了以下代码。当我尝试在服务器上运行它时,它向我显示
Http: 404 error
Type Status Report
Description The origin server did not find a current representation for the target resource or is not willing to disclose that one exists
我的代码是
package com.shaby.newservletdemo;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.Servlet;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
public class servletInterface implements Servlet{
ServletConfig servletConfig= null;
@Override
public void destroy() {
// TODO Auto-generated method stub
System.out.println("Servlet Destroyed.");
}
@Override
public ServletConfig getServletConfig() {
// TODO Auto-generated method stub
return servletConfig;
}
@Override
public String getServletInfo() {
// TODO Auto-generated method stub
return "Version 1. 2016-2019";
}
@Override
public void init(ServletConfig arg0) throws ServletException {
// TODO Auto-generated method stub
this.servletConfig= arg0;
System.out.println("Servlet Initialized");
}
@Override
public void service(ServletRequest arg0, ServletResponse arg1) throws ServletException, IOException {
// TODO Auto-generated method stub
arg1.setContentType("text/html");
PrintWriter pw= arg1.getWriter();
pw.println("<html><body>");
pw.println("Hello Service has been done!!");
pw.println("</body></html>");
}
}
执行部分有什么问题吗?还是我遗漏了什么?? 我在 Eclipse IDE 上运行它。 我正在使用 Tomcat 9 服务器。
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
<display-name>servletsdemo</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>servletInterface</servlet-name>
<servlet-class>servletInterface</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>servletInterface</servlet-name>
<url-pattern>/servletInterface</url-pattern>
</servlet-mapping>
</web-app>
最佳答案
您的 web.xml 配置了吗?
应该有类似的内容
<servlet-mapping>
<servlet-name>servletInterface</servlet-name>
<url-pattern>/servletInterface</url-pattern>
</servlet-mapping>
在里面。
此外,您可能应该扩展 HttpServlet 而不是 Servlet。
关于java - 运行 servlet 显示错误,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/43061147/