JavaWeb_ServletContext读取Web应用下的资源文件

 (1)新建JavaWeb项目 JavaWeb

（2）在src下新建ServletContext包->包下新建类TestServlet.java与文件info.properties

 info.properties内容

name=xiaoming
address=beijing

 TestServlet.java内容

package ServletContext;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Properties;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.xml.ws.Response;
/**
 * 
 * @author zhangxinlin
 *	ServletContext读取文件内容
 */
public class TestServlet extends HttpServlet{
		@Override
		protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
			resp.setContentType("text/html;charset=utf-8");
			ServletContext context = this.getServletContext();
			PrintWriter out = resp.getWriter();
			//	相对路径获取输入流
			InputStream in=context.getResourceAsStream("/WEB-INF/classes/info.properties");
			//	绝对路径获取输入流
			String path=context.getRealPath("/WEB-INF/classes/info.properties");
			FileInputStream inPath= new FileInputStream(path);
			System.out.println(path);
			Properties pros = new Properties(); 
			pros.load(in);
			out.println("姓名："+pros.getProperty("name")+"<br>");
			out.println("地址："+pros.getProperty("address"));
		}

}

(3)在web.xml中添加TestServlet的映射

<servlet>
  	<servlet-name>TestServlet</servlet-name>
  	<servlet-class>ServletContext.TestServlet</servlet-class>
  </servlet>
  <servlet-mapping>
  	<servlet-name>TestServlet</servlet-name>
  	<url-pattern>/T</url-pattern>
  </servlet-mapping>

（4）访问结果

 （5）项目结构

本文地址：https://blog.csdn.net/weixin_45460315/article/details/111866435