In the example above, we create a servlet named UserRegistrationServlet that extends the HttpServlet class. The doPost method is overridden to handle HTTP POST requests. The servlet retrieves the username and password parameters from the request using request.getParameter(). Following this, the code...
Here’s a code snippet showing the new methods in action: publicvoiddoGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException{ res.setContentType("text/plain"); PrintWriterout= res.getWriter();out.println("The current user is: "+ req.getUserPrincipal());out....
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { PrintWriter out = response.getWriter(); Connection conn = null; try { Class.forName ("oracle.jdbc.driver.OracleDriver"); String url = "jdbc:oracle:thin:@//db_server:1521/service_n...
()Today, people keep many(29)of pets. Animals such as canaries, parrots, mice and hamsters live in cages. They need people to bring them food and water and to keep their cages clean. Other animals, such as dogs and cats, need food and water, but they can take care of themselves(30...
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这个方法具体的流程是首先执行ActionForm中的reset方法进行重置,然后得到表单中所有输入域的name名称,再调用request.getParameterValues(),根据name名称得到相应的值,最后将表单中的数据全部放到一个map中,map的key为表单输入域的名称,map的value为表单输入域的值(字符串数组),接下来调用一个第三方组件BeanUtils,将Map中的...
paramMap=request.getParameterMap() println"YouSubmitted:" for(entryinparamMap){ println"${entry.key}=${entry.value}" } } 您可以仅创建一个简单的HTML表单,然后将此表单的行为属性发送到 action="Login.groovy"。然后将以下标签添加到web.xml: <servlet> <servlet...
returninStream; } publicbyte[] getData() { returndata; } publicString getFilname() { returnfilname; } publicvoidsetFilname(String filname) { this.filname = filname; } publicString getParameterName() { returnparameterName; } publicvoidsetParameterName(String parameterName) { ...
在JSP页面中,JSP程序通过request对象的()方法获取客户端参数的值 A. getParameter B. getAttribute C. getCookies D. getMethod 查看完整题目与答案 如果服务器不再需要或重新装入Servlet实例时,服务器会调用Servlet的()方法 A. init() B. destroy() C. service() D. close() 查看完整题目与...
D. getParameterValues() 查看完整题目与答案 Servlet主要用于() A. 处理客户端请求并做出响应 B. 打开并显示网页内容 C. 连接数据库 D. 页面跳转 查看完整题目与答案 test.jsp文件如下所示 str is ,运行时,将发生()。 A. 编译阶段出现错误 B. 翻译阶段出现错误 C. 运行后,浏览...