源自：1-3 手工编写第一个Servlet

get方法没问题，post方法报405错误

HTTP Status [405] – [Method Not Allowed]

Type Status Report

Message HTTP method POST is not supported by this URL

Description The method received in the request-line is known by the origin server but not supported by the target resource.

Apache Tomcat/9.0.0.M21

代码：index.jsp:

String path = request.getContextPath();

String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";

%>

html>

">

Insert title here

第一个servlet小例子

Get方法请求HelloServlet

HelloServlet.java:package servlet;

import java.io.IOException;

import java.io.PrintWriter;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

public class HelloServlet extends HttpServlet {

@Override

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

// TODO Auto-generated method stub

System.out.println("处理Get请求……");

PrintWriter out = response.getWriter();

response.setContentType("text/html;charset=utf-8");

out.println("Hello Servlet");

}

@Override

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

System.out.println("处理Post请求……");

PrintWriter out = response.getWriter();

response.setContentType("text/html;charset=utf-8");

out.println("Hello Servlet");

}

}

web.xml:<?xml  version="1.0" encoding="UTF-8"?>

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"

version="3.1">

index.jsp

HelloServlet

servlet.HelloServlet

HelloServlet

/servlet/HelloServlet

提问者：Tsukiis

2017-06-06 14:22