Servlet实现登录功能-马育民老师

# 流程

[![](http://65242847.gitee.io/pic/jsp/Snipaste_2022-01-21_10-29-24.png)](http://65242847.gitee.io/pic/jsp/Snipaste_2022-01-21_10-29-24.png)

# html

```
登录
<form action="login" >
	用户名：<input name="username" placeholder="请输入用户名"> <br>
	密码：<input name="password" placeholder="请输入密码" type="password"><br>
	<input type="submit" value="登录">
</form>
```

# servlet

```
import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet( urlPatterns="/login")
public class LoginServlet extends HttpServlet{

/**
	 * HttpServletRequest req：封装请求信息（数据），如：封装提交来的用户名、密码
	 */
	@Override
	protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
		//获取提交来的数据
		String uname=req.getParameter("username");
		String pass=req.getParameter("password");
		
		System.out.println("接收到登录请求！用户名："+uname+"，密码："+pass);
	
	}
}

```

原文出处：http://malaoshi.top/show_1IX2chaNBTDI.html