How to create dynamic pages-using JSP and Java code

1. Create a java class that inherits the httpserlet abstract class.

public class SxtServlet  extends HttpServlet{
    //初始化servlet
    public void init() throws ServletException {
    ...
    }    //实现主要功能
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)            
        throws ServletException, IOException {
            ...
    }    
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)            
        throws ServletException, IOException {
            ...
    }    //销毁servlet
    @Override
        public void destroy() {
    ...
    }
}

2. Find the WebRoot/WEB-INF/web.xml file and write the following code:

<servlet>
  <!--  java类名-->
    <servlet-name>SxtServlet</servlet-name>
    <!-- java路径 -->
    <servlet-class>sxt.com.SxtServlet</servlet-class>
  </servlet>
  <servlet-mapping>
  <!-- java类名 -->
    <servlet-name>SxtServlet</servlet-name>
    <!-- 表单中action连接的名字(自己起) -->
    <url-pattern>/login</url-pattern>
  </servlet-mapping>

3. In the jsp page, the words written in action="" must match The same and add a / in front.

<form action="login" method="post">    ...
    </form>

1. Create a java class that inherits the httpserlet abstract class.

public class SxtServlet  extends HttpServlet{
    //初始化servlet
    public void init() throws ServletException {
    ...
    }    //实现主要功能
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)            
    throws ServletException, IOException {
            ...
    }    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)            
    throws ServletException, IOException {
            ...
    }    //销毁servlet
    @Override
    public void destroy() {
    ...
    }
}

2. Find the WebRoot/WEB-INF/web.xml file and write the following code:

<servlet>
  <!--  java类名-->
    <servlet-name>SxtServlet</servlet-name>
    <!-- java路径 -->
    <servlet-class>sxt.com.SxtServlet</servlet-class>
  </servlet>
  <servlet-mapping>
  <!-- java类名 -->
    <servlet-name>SxtServlet</servlet-name>
    <!-- 表单中action连接的名字(自己起) -->
    <url-pattern>/login</url-pattern>
  </servlet-mapping>

3. In the jsp page, the words written in action="" must match The same and add a / in front.

<form action="login" method="post">    ...
    </form>

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