为什么IDEA直接创建WEB项目自带的servlet访问404,但自己配置的项目没有问题
index.jsp是能显示的
![img](https://img-mid.csdnimg.cn/release/static/image/mid/ask/010dc405407b48f18c5f595bc54f57f6.png?x-oss-process=image/auto-orient,1/resize,w_320,m_lfit)
但是servlet 404
![img](https://img-mid.csdnimg.cn/release/static/image/mid/ask/7d66928d87cd432b813904f9b54cdf9e.png?x-oss-process=image/auto-orient,1/resize,w_320,m_lfit)
servlet代码如下:
package com.example.demo2;
import java.io.*;
import jakarta.servlet.http.*;
import jakarta.servlet.annotation.*;
@WebServlet("/hello-servlet")
public class HelloServlet extends HttpServlet {
private String message;
public void init() {
message = "Hello World!";
}
public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
response.setContentType("text/html");
// Hello
PrintWriter out = response.getWriter();
out.println("<html><body>");
out.println("<h1>" + message + "</h1>");
out.println("</body></html>");
}
public void destroy() {
}
}
tomcat配置如下:
![img](https://img-mid.csdnimg.cn/release/static/image/mid/ask/f0936940338b49c992b63afa9923689c.png?x-oss-process=image/auto-orient,1/resize,w_320,m_lfit)
![img](https://img-mid.csdnimg.cn/release/static/image/mid/ask/f1e15475ded1497e9abf2ba5a7f4d64a.png?x-oss-process=image/auto-orient,1/resize,w_320,m_lfit)
但自己从空项目开始手动配置一次WEB,却不会出现这种问题
package web.servlet;
import java.io.*;
import javax.servlet.*;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.*;
@WebServlet("/test")
public class HelloWorld extends HttpServlet {
private String message;
public void init() throws ServletException{
message = "hello world";
}
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException,IOException{
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("<h1>"+message+"<h1>");
}
}
![img](https://img-mid.csdnimg.cn/release/static/image/mid/ask/2c6af1eb88e4468cbd1195d7b2d06767.png?x-oss-process=image/auto-orient,1/resize,w_320,m_lfit)
可是我看tomcat的配置一样啊
![img](https://img-mid.csdnimg.cn/release/static/image/mid/ask/95aad215c32b406d85756c7e3cf79d2c.png?x-oss-process=image/auto-orient,1/resize,w_320,m_lfit)
![img](https://img-mid.csdnimg.cn/release/static/image/mid/ask/b87b0b1190a94a4a8d9533a22e583863.png?x-oss-process=image/auto-orient,1/resize,w_320,m_lfit)