前端

使用httpServlet方法开发

云博小周宇2 Mins Read

使用继承HttpServlet方法开发

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默认Doget方式提交


package com.wangzhi.servlet;



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

public class MyServlet extends HttpServlet {

    protected void doGet(HttpServletRequest res, HttpServletResponse resp)
            throws ServletException, java.io.IOException {
        resp.getWriter().println("I‘m a student");
    }

    protected void doPost(HttpServletRequest res, HttpServletResponse resp)
            throws ServletException, java.io.IOException {
        resp.getWriter().println("I‘m a senior student");
    }

}

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相比较post而言安全性低

 

 

怎么使用Dopost方式？

 

login.html


<html>
<body>
<form action="/web/MyServlet" method="post">
<input type="String" name="username" value="username"/>
<input type="submit" value="login"/>
</form>
</body>
</html>

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MyServlet.java


package com.wangzhi.servlet;

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

public class MyServlet extends HttpServlet {
    
protected void doGet(HttpServletRequest res,HttpServletResponse resp) throws ServletException,
java.io.IOException
{
    resp.getWriter().println("this doGet");
}
protected void doPost(HttpServletRequest res,HttpServletResponse resp) throws ServletException,
java.io.IOException
{
    resp.getWriter().println("This is doPost"+res.getParameter("username"));
}

}

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