Servlet读取资源（properties）

1、在resources目录下新建一个properties文件，文件名bb.properties

文件内容：

username: root
password: 123

2、在maven中先进行一下clearn，清楚target目录

3、第一次启动tomcat，生成一个新的target目录，该目录下，找到编译过的bb.properties文件路径

并且在java目录下新建一个文件

内容如下，getResourceAsStream地址为编译过的bb.properties文件路径

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletContext;
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.InputStream;
import java.util.Properties;

public class PropServletDemo05 extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        InputStream is = this.getServletContext().getResourceAsStream("/WEB-INF/classes/bb.properties");
        Properties properties = new Properties();
        properties.load(is);
        String username = properties.getProperty("username");
        String password = properties.getProperty("password");
        resp.getWriter().print(username+password);

    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doGet(req, resp);
    }
}

4、最后在web.xml中注册servlet

内容

<!--注册Servlet-->
<servlet>
    <servlet-name>fuck1</servlet-name>
    <servlet-class>com.donric.servlet.PropServletDemo05</servlet-class>
</servlet>
<!--Servlet的请求路径-->
<servlet-mapping>
    <servlet-name>fuck1</servlet-name>
    <url-pattern>/fuck1</url-pattern>
</servlet-mapping>

5、启动tomcat