java - Tomcat 在 Eclipse 中运行但无法执行 GET 请求

Question

<分区>

Answer 1

将带有注解@WebServlet的代码行改成:

@WebServlet(name = "HelloServlet", urlPatterns = "/HelloServlet")

你会很开心。

为避免异常(当应用上下文为/时)，您应该检查request.getContextPath()。

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebServlet(name = "HelloServlet", urlPatterns = "/HelloServlet")
public class HelloServlet extends HttpServlet {

    private static final long serialVersionUID = 1L;

    public HelloServlet() {

    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        if (request.getContextPath().length() > 0) {
            response.getWriter().append("Served at: ").append(request.getContextPath());
        } else {
            response.getWriter().append("Served at: " + "/");
        }

    }

    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        doGet(request, response);
    }

}