输入表单的 RequestDispatcher
RequestDispatcher for an input form
<form id='search' method='get'>
<input type='text' name='search' />
<input type='submit' value='Search'/><br/>
</form>
我有这个搜索表单。
String search = request.getParameter("search");
if (search != null) {
request.setAttribute("search", search);
RequestDispatcher rd = request.getRequestDispatcher("Content");
rd.forward(request, response);
}
在这里,我想获取我在输入中键入的内容并将其分派给内容。我的输入根本不是反应。我的调试器显示我的程序甚至没有转到 request.getParameter("search") 部分。有什么问题吗?
以如下形式指定操作名称:
<form action="/yourServlet/"id='search' method='get'>
<input type='text' name='search' />
<input type='submit' value='Search'/><br/>
</form>
Servlet 代码:
public class YourServlet extends HttpServlet{
public void doGet(HttpServletRequest request, HttpServletResponse
response) throws IOException{
String search = request.getParameter("search");
if (search != null) {
request.setAttribute("search", search);
RequestDispatcher rd =
request.getRequestDispatcher("Content");
rd.forward(request, response);
}
}
}
和您的 servlet 映射 web.xml:
<servlet>
<servlet-name>yourServlet</servlet-name>
<servlet-class>test.YourServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>yourServlet</servlet-name>
<url-pattern>/yourServlet/</url-pattern>
</servlet-mapping>
<form id='search' method='get'>
<input type='text' name='search' />
<input type='submit' value='Search'/><br/>
</form>
我有这个搜索表单。
String search = request.getParameter("search");
if (search != null) {
request.setAttribute("search", search);
RequestDispatcher rd = request.getRequestDispatcher("Content");
rd.forward(request, response);
}
在这里,我想获取我在输入中键入的内容并将其分派给内容。我的输入根本不是反应。我的调试器显示我的程序甚至没有转到 request.getParameter("search") 部分。有什么问题吗?
以如下形式指定操作名称:
<form action="/yourServlet/"id='search' method='get'>
<input type='text' name='search' />
<input type='submit' value='Search'/><br/>
</form>
Servlet 代码:
public class YourServlet extends HttpServlet{
public void doGet(HttpServletRequest request, HttpServletResponse
response) throws IOException{
String search = request.getParameter("search");
if (search != null) {
request.setAttribute("search", search);
RequestDispatcher rd =
request.getRequestDispatcher("Content");
rd.forward(request, response);
}
}
}
和您的 servlet 映射 web.xml:
<servlet>
<servlet-name>yourServlet</servlet-name>
<servlet-class>test.YourServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>yourServlet</servlet-name>
<url-pattern>/yourServlet/</url-pattern>
</servlet-mapping>