IDEA创建/部署/运行JavaWeb工程

准备工作

1. 安装 JDK1.8
2. 安装 tomcat8

Web 工程创建

1. 创建 JavaWeb 工程
2. 创建 ./web/WEB-INF/classes 文件，用于存放编译后的 class 文件
3. 创建 ./web/WEB-INF/lib 文件，用于存放依赖的 jar 包

JavaWeb 配置：File --> New --> Project --> Java Enterprise

Project SDK	Application Server	Add Libraries and Frame	web.xml
JDK1.8	tomcat8	Web Application	create

classes 配置：File --> Project Structure --> Modules --> Path

Output path	Test output path
./web/WEB-INF/classes	./web/WEB-INF/classes

lib 配置：File --> Project Structure --> Modules --> Dependencies

Add JARs or directories	Choose categories
./web/WEB-INF/lib	Jar Directory

Tomcat 部署

1. 生成 war 包
2. 配置 tomcat 容器，用于项目部署

war 配置：File --> Project Structure --> Artifacts

Add Web Application	Type	Output directory
From Modules	Exploded	默认

tomcat 配置：Run --> Edit Configurations

Add Tomcat Server	Application Server	HTTP port	JMX port	Deployment
Local	tomcat8	8080	1099	Add Artifact

JavaWeb 测试

在 ./src 目录下新建 HelloWorld.java

import javax.servlet.ServletException;  
import javax.servlet.http.HttpServlet;  
import javax.servlet.http.HttpServletRequest;  
import javax.servlet.http.HttpServletResponse;  
import java.io.IOException;  
import java.io.PrintWriter;  
  
@WebServlet("/HelloWorld")
public class HelloWorld extends HttpServlet {  
private String message;  
  
    @Override  
    public void init() throws ServletException {  
    message = "Hello world, this message is from servlet!";  
    }  
  
    @Override  
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {  
        //设置响应内容类型  
    resp.setContentType("text/html");  
  
        //设置逻辑实现  
    PrintWriter out = resp.getWriter();  
    out.println("<h1>" + message + "</h1>");  
    }  
  
    @Override  
    public void destroy() {  
    super.destroy();  
    }  
}

参考链接

[1] https://www.cnblogs.com/javabg/p/7976977.html