Gradle Learning Journey (iv) building a simple Java Web project using Gradle

This section uses a simple Javaweb project to realize the use of Gradle

Demand

Build a Javaweb project and build a Jsp+servlet development environment
You can break down your requirements into two steps:

• Building a Java project using Gradle
• Build the Web view layer for the project

Tools

• gradle4.3
• Idea
• JDK 1.8

Experimental process

1. First, create an empty Gradle project in idea.
   

2. Create the following directory-file structure
   

3. Write the following in the build script

group ‘com.shy‘version ‘1.0-SNAPSHOT‘apply plugin:‘java‘apply plugin:‘war‘apply from: ‘https://raw.github.com/akhikhl/gretty/master/pluginScripts/gretty.plugin‘jar{    manifest{        attributes ‘Main-Class‘:‘com.shy.todo.ToDoApp‘    }}repositories{    mavenCentral();//对maven central 2仓库访问的快捷方式}dependencies{    providedCompile ‘javax.servlet:servlet-api:2.5‘    runtime ‘javax.servlet:jstl:1.2‘}task wrapper(type:Wrapper ){    gradleVersion = ‘4.3‘}

1. The Web. XML is configured as

Use a todoservlet to accept all requests

<?xmlVersion= "1.0" encoding= "UTF-8"?><web-appxmlns="Http://java.sun.com/xml/ns/javaee"xmlns:xsi="Http://www.w3.org/2001/XMLSchema-instance"xsi:schemalocation="Http://java.sun.com/xml/ns/javaeehttp://java.sun.com/xml/ns/javaee/web-app_2_5.xsd "version="2.5">    <servlet>        <servlet-name>Todoservlet</servlet-name>        <servlet-class>Com.shy.todo.web.ToDoServlet</servlet-class>    </servlet>    <servlet-mapping>        <servlet-name>Todoservlet</servlet-name>        <url-pattern>/</url-pattern>    </servlet-mapping></web-app>

1. Todoservlet responsible for forwarding requests

 Public classTodoservletextendshttpservlet{PrivateTodorepository todorepository =New inmemorytodorepository();@Override    protected void Service(HttpServletRequest req, HttpServletResponse resp)throwsServletexception, IOException {String Servletpath = req.Getservletpath(); String view =ProcessRequest(Servletpath,req); RequestDispatcher Dispatcher = req.Getrequestdispatcher(view); Dispatcher.forward(REQ,RESP); System. out.println("Hello"); }PrivateStringProcessRequest(String servletpath,httpservletrequest request) {if(Servletpath.equals("/all")){return "/jsp/todo-list.jsp"; }Else{return "not-found.jsp"; }    }}

The above is the project source

Gradle Learning Journey (iv) building a simple Java Web project using Gradle