doGet和doPost乱码

最新推荐文章于 2021-12-01 09:16:56 发布

原创最新推荐文章于 2021-12-01 09:16:56 发布 · 562 阅读

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本文通过一个具体的Java Servlet示例对比了HTTP请求中GET与POST方法的区别，展示了如何使用这两种方法处理用户输入，并解释了为什么某些情况下POST可以替代GET而反之则不行。

doGet和doPost,doPost可以用doGet代码解决反之不能

public class GetPostMethod extends HttpServlet {
    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        String username = request.getParameter("username");
        username = new String(username.getBytes("iso-8859-1"), "utf-8");
        System.out.println(username);
    }

    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        request.setCharacterEncoding("utf-8");
        String username = request.getParameter("username");
        System.out.println(username);
    }
}

html页面

    <form action="/d_response/getpost" method="get">
        <input type="text" name="username">
        <input type="submit" value="提交">
    </form>

    <form action="/d_response/getpost" method="post">
        <input type="text" name="username">
        <input type="submit" value="提交">
    </form>