Web
首先在IDEA的社区版里File>>New>>Project创建一个普通的Java项目
然后在src同目录下创建一个Web目录，包含WEB-INF目录，接着在WEB-INF目录下创建classes目录，lib目录和web.xml文件，如下图所示
注意这里可以将servlet的jar包导入到lib目录下，也可以导入到External Libraries里
web.xml文件内容
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| <?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
version="3.1">
<servlet>
<servlet-name>hello</servlet-name>
<servlet-class>com.automne.HelloWorldController</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>hello</servlet-name>
<url-pattern>/hello</url-pattern>
</servlet-mapping>
</web-app>
|
HelloWorldController.java
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| package com.automne;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
public class HelloWorldController extends HttpServlet {
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {
doPost(req, resp);
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws IOException {
resp.setContentType("text/html;charset=utf-8");
PrintWriter out = resp.getWriter();
out.write("hello!");
}
}
|
然后就是配置servlet容器-Tomcat了
在社区版里，需要下载Smart Tomcat插件
安装重启IDEA后生效，接着Edit Configurations，尤其注意下图标记的地方
Deployment Directory里设置的必须是servlet项目里，WEB-INF目录的上层目录，在这里就是D:\Learning\IdeaProjects\ServletBase\Web
Context Path可以任意
运行上面的Tomcat后，访问发现正常解析了servlet
参考链接：
https://blog.csdn.net/hungrysoul/article/details/80916082
