参考:https://guides.gradle.org/building-java-web-applications

1.运行和调试

IDEA创建gradle项目,项目结构如下

各个文件:

build.gradle

// https://guides.gradle.org/building-java-web-applications

plugins {

    id 'java'

    id 'war'

    id 'org.akhikhl.gretty' version '1.4.2'

}

group 'ServletDemo'

version '1.0-SNAPSHOT'

sourceCompatibility = 1.8

repositories {

    mavenCentral()

}

dependencies {

    // https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api

    providedCompile group: 'javax.servlet', name: 'javax.servlet-api', version: '3.1.0'

    testCompile group: 'junit', name: 'junit', version: '4.12'

}

HelloServlet.java

package servlets;

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 = {"hello"}, loadOnStartup = 1)

public class HelloServlet extends HttpServlet {

    int i = 0; // Servlet "persistence"

    protected void doGet(HttpServletRequest request, HttpServletResponse response)

            throws IOException {

        response.getWriter().print("Hello, World! " + i++);

    }

    protected void doPost(HttpServletRequest request, HttpServletResponse response)

            throws ServletException, IOException {

        String name = request.getParameter("name");

        if (name == null) name = "World";

        request.setAttribute("user", name);

        request.getRequestDispatcher("response.jsp").forward(request, response);

    }

} ///:~

index.html

<!DOCTYPE html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>Servlet Demo</title>

</head>

<body>

    <p>Say <a href="hello">Hello</a></p>

    <form method="post" action="hello">

        <h2>Name:</h2>

        <input type="text" id="say-hello-text-input" name="name" />

        <input type="submit" id="say-hello-button" value="Say Hello" />

    </form>

</body>

</html>

response.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>

<html>

    <head>

        <title>Hello Page</title>

    </head>

    <body>

        <h2>Hello, ${user}!</h2>

    </body>

</html>

然后点击左侧的Gradle面板,选择任务gretty.appRun就可以启动app,通过localhost:8080访问

如果要 调试,那么在Gradle面板中选择任务gretty.appRunDebug,启动该任务后,选择Run->Edit Configurations 然后添加一个Remote Run/Debug,如下图,名为DebugServletDemo,根据gretty官方文档,默认debug port是5005,所以这里填好host和port

然后在Gradle面板中启动任务gretty.appRunDebug,如下图Run选项卡中所示,在5005端口等待Debugger的连接

接下来再启动Run->Debug->DebugServletDemo,如下图Debug选项卡中所示,Debugger已连接上5005端口

此时再次查看Run选项卡,会发现其中内容如下,点击该http链接开始调试

2.部署到tomcat

2.1. 打包war只需要Gradle面板中选择build.build任务即可,然后把war包放到tomcat安装目录的webapps/目录下,这里我的war包名为ServletDemo-1.0-SNAPSHOT.war

2.2. 修改tomcat安装目录下的conf/tomcat-users.xml,如下内容,从而可以使用tomcat的管理权限

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

<!--

  Licensed to the Apache Software Foundation (ASF) under one or more

  contributor license agreements.  See the NOTICE file distributed with

  this work for additional information regarding copyright ownership.

  The ASF licenses this file to You under the Apache License, Version 2.0

  (the "License"); you may not use this file except in compliance with

  the License.  You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software

  distributed under the License is distributed on an "AS IS" BASIS,

  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

  See the License for the specific language governing permissions and

  limitations under the License.

-->

<tomcat-users xmlns="http://tomcat.apache.org/xml"

              xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

              xsi:schemaLocation="http://tomcat.apache.org/xml tomcat-users.xsd"

              version="1.0">

<!--

  NOTE:  By default, no user is included in the "manager-gui" role required

  to operate the "/manager/html" web application.  If you wish to use this app,

  you must define such a user - the username and password are arbitrary. It is

  strongly recommended that you do NOT use one of the users in the commented out

  section below since they are intended for use with the examples web

  application.

-->

<!--

  NOTE:  The sample user and role entries below are intended for use with the

  examples web application. They are wrapped in a comment and thus are ignored

  when reading this file. If you wish to configure these users for use with the

  examples web application, do not forget to remove the <!.. ..> that surrounds

  them. You will also need to set the passwords to something appropriate.

-->

<!--

  <role rolename="tomcat"/>

  <role rolename="role1"/>

  <user username="tomcat" password="<must-be-changed>" roles="tomcat"/>

  <user username="both" password="<must-be-changed>" roles="tomcat,role1"/>

  <user username="role1" password="<must-be-changed>" roles="role1"/>

-->

    <role rolename="manager-gui"/>

    <user username="admin" password="1qaz2WSX" roles="manager-gui"/>

</tomcat-users>

2.3. 启动tomcat,访问localhost:8080,如下:

2.4. 点击"Manager App"按钮,进入如下页面,然后start ServletDemo-1.0-SNAPSHOT即可访问

2.4.1. 这里我发现war包的app不能启动,在tomcat的logs/manager.2018.xx.xx.log中发现报错Invalid <url-pattern> [hello] in servlet mapping,去HelloServlet.java中把urlPatterns="hello"改为urlPatterns="/hello"即可}改为

IDEA community + Gradle + Gretty 调试 servlet 应用 + war包部署到tomcat的更多相关文章

  1. SpringBoot之打成war包部署到Tomcat

    正常情况下SpringBoot项目是以jar包的形式,正常情况下SpringBoot项目是以jar包的形式,并且SpringBoot是内嵌Tomcat服务器,所以每次重新启动都是用的新的Tomcat服 ...

  2. 将Web项目War包部署到Tomcat服务器

    1. 配置Java运行环境 1.1 下载并安装JDK 从官网上下载最新的JDK:http://java.sun.com/javase/downloads/index.jsp ,下载后安装,选择想把JD ...

  3. 将web项目打成war包部署在tomcat步骤

    将web项目打成war包部署在tomcat步骤 1.将自己的项目打成war包. 2.将打包好的war复制到${tomcat.home}/webapps项目下. 3.在${tomcat.hom}/con ...

  4. IntelliJ IDEA打包WAR并部署运行(mac osx)将Web项目War包部署到Tomcat服务器基本步骤（完整版）

    用IntelliJ IDEA做web开发体验很好,但导出war包比eclipse麻烦了不少,以下是解决方案: 打包:1.自动打包:File —> Project Structure —> ...

  5. 将Web项目War包部署到Tomcat服务器基本步骤

    参考来源: http://www.cnblogs.com/pannysp/archive/2012/03/07/2383364.html 1. 常识:   1.1 War包 War包一般是在进行Web ...

  6. 将Web项目War包部署到Tomcat服务器基本步骤（完整版）

    1. 常识:   1.1 War包 War包一般是在进行Web开发时,通常是一个网站Project下的所有源码的集合,里面包含前台HTML/CSS/JS的代码,也包含Java的代码. 当开发人员在自己 ...

  7. war包部署到tomcat

    1.maven web app打包成app.war.打包命令:mvn  clean package Dmaven.test.skip=true war 是什么?里面有什么东西?a.web.app所有必 ...

  8. Spring Boot Jar包转War包 部署到Tomcat下

    原文:https://my.oschina.net/sdlvzg/blog/1562998 我们都知道springBoot中已经内置了tomcat,是不需要我们额外的配置tomcat服务器的,但是有时 ...

  9. Springboot-技术专区-war包部署在Tomcat上并修改默认端口

    springboot项目内置Tomcat,直接打成jar包在dos下运行即可,但有时我们需要用war包以非内嵌Tomcat的方式来部署,以下是本人的实际经验 1.首先需要修改pom.xml文件 < ...

随机推荐

  1. 使用Nginx部署静态网站

    这篇文章将介绍如何利用Nginx部署静态网站. 之前写过2篇有关Nginx的文章,一篇是<利用nginx,腾讯云免费证书制作https>,另外一篇是<linux安装nginx> ...

  2. python流程控制之if、 while和for 循环

    1.if 语句 语法1 if 条件:# 代码1# ... # cls='human'# sex='female'# age=18## if cls == 'human' and sex == 'fem ...

  3. python网络编程（五）

    udp广播 #coding=utf-8 import socket, sys dest = ('<broadcast>', 7788) # 创建udp套接字 s = socket.sock ...

  4. Mr. Rito Post Office [Aizu-2200] [图论] [DP]

    题意:你是某个岛国(ACM-ICPC Japan )上的一个苦逼程序员,你有一个当邮递员的好基友利腾桑遇到麻烦了:全岛有一些镇子通过水路和旱路相连,走水路必须要用船,在X处下船了船就停在X处.而且岛上 ...

  5. 100405之python程序安装

    Python的安装 注意安装的path和.exe可执行文件的命名方式 例如py2或者py3 sublime的安装 一.Sublime Text 3安装(64位Windows操作系统): 1.双击 Su ...

  6. python之进程和线程2

    1  GIL全局解释器锁定义 定义:在一个线程拥有了解释器的访问权后,其他的所有线程都必须等待他释放解释器的访问权,即这些线程的下一条指令并不会互相影响. 缺点:多处理器退化为单处理器 优点:避免大量 ...

  7. C_求最大连续子序列和

    题目: 输入一组整数,求出这组数字子序列和中最大值.也就是只要求出最大子序列的和,不必求出最大的那个序列.例如: 序列:-2 11 -4 13 -5 -2,则最大子序列和为20. 序列:-6 2 4 ...

  8. 附近有什么？8款可以查周边的App

    如今科技发达的时代,手机的功能不仅仅只是能通讯聊天,而是逐渐的走进了人们的生活中.因为有了APP,我们的生活才更丰富,并且有很多是我们生活中不可缺少的软件,而这些软件便是根据手机中的GPS定位系统而来 ...

  9. APP中的图片如何长按可以下载并保存图片到相册

    直接上图 方式一: 实现方式二: 方式三:

  10. ninja-build环境安装

    ninja是一个小型构建系统,专注于速度,和常用的make类似,有一些软件就是基于ninja编译构建的,比如clickhouse数据库就需要依赖ninja,因为最近在研究clickhouse,需要依赖 ...