Servlet的request获取请求行数据

获取请求行数据
* GET /day14/demo1?name=zhangsan HTTP/1.1
* 方法：
1. 获取请求方式 ：
* String getMethod()
2. 获取虚拟目录：
* String getContextPath()
3. 获取Servlet路径:
* String getServletPath()
4. 获取get方式请求参数：
* String getQueryString()
5. 获取请求URI：
* String getRequestURI()
* StringBuffer getRequestURL()
* URL:统一资源定位符
* URI：统一资源标识符
6. 获取协议及版本：HTTP/1.1
* String getProtocol()
7. 获取客户机的IP地址：
* String getRemoteAddr()

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("/requestDemo1")
public class RequestDemo1 extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        //获取请求方式
        String method = request.getMethod();
        System.out.println(method);
        //获取虚拟路径
        String contextPath = request.getContextPath();
        System.out.println(contextPath);
        //获取servlet路径
        String servletPath = request.getServletPath();
        System.out.println(servletPath);
        //获取参数
        String queryString = request.getQueryString();
        System.out.println(queryString);
        //获取URI
        String requestURI = request.getRequestURI();
        System.out.println(requestURI);
        //获取URL
        StringBuffer requestURL = request.getRequestURL();
        System.out.println(requestURL);
        //获取版本和协议
        String protocol = request.getProtocol();
        System.out.println(protocol);
        //获取客户IP地址
        String remoteAddr = request.getRemoteAddr();
        System.out.println(remoteAddr);
    }
}