设置jsp文件的绝对路径方法可以通过配置web.xml文件来实现。以下是具体的步骤:
- 在web.xml文件中添加servlet和servlet-mapping标签。
<servlet>
<servlet-name>yourServletName</servlet-name>
<jsp-file>/WEB-INF/jsp/yourJspFile.jsp</jsp-file>
</servlet>
<servlet-mapping>
<servlet-name>yourServletName</servlet-name>
<url-pattern>/yourServletPath</url-pattern>
</servlet-mapping>
- 在servlet中,使用
getServletContext().getRealPath()
方法获取jsp文件所在的绝对路径。
public class YourServlet extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String path = getServletContext().getRealPath("/WEB-INF/jsp/yourJspFile.jsp");
// do something with the path
RequestDispatcher rd = request.getRequestDispatcher(path);
rd.forward(request, response);
}
}
- 在jsp文件中,使用
request.getServletContext().getRealPath()
方法获取当前jsp文件所在的绝对路径。
<%
String path = request.getServletContext().getRealPath("/");
// do something with the path
%>
示例一:
首先,在web.xml中配置servlet和servlet-mapping:
<servlet>
<servlet-name>helloServlet</servlet-name>
<jsp-file>/WEB-INF/jsp/hello.jsp</jsp-file>
</servlet>
<servlet-mapping>
<servlet-name>helloServlet</servlet-name>
<url-pattern>/hello</url-pattern>
</servlet-mapping>
然后,在servlet中获取jsp文件的绝对路径并转发到该jsp文件:
public class HelloServlet extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String path = getServletContext().getRealPath("/WEB-INF/jsp/hello.jsp");
RequestDispatcher rd = request.getRequestDispatcher(path);
rd.forward(request, response);
}
}
最后,在hello.jsp文件中使用request.getServletContext().getRealPath()
方法获取当前jsp文件的绝对路径:
<%
String path = request.getServletContext().getRealPath("/");
out.println("当前jsp文件所在的绝对路径:" + path);
%>
示例二:
首先,在web.xml中配置servlet和servlet-mapping:
<servlet>
<servlet-name>loginServlet</servlet-name>
<jsp-file>/WEB-INF/jsp/login.jsp</jsp-file>
</servlet>
<servlet-mapping>
<servlet-name>loginServlet</servlet-name>
<url-pattern>/login</url-pattern>
</servlet-mapping>
然后,在servlet中获取jsp文件的绝对路径并转发到该jsp文件:
public class LoginServlet extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String path = getServletContext().getRealPath("/WEB-INF/jsp/login.jsp");
RequestDispatcher rd = request.getRequestDispatcher(path);
rd.forward(request, response);
}
}
最后,在login.jsp文件中使用request.getServletContext().getRealPath()
方法获取当前jsp文件的绝对路径:
<%
String path = request.getServletContext().getRealPath("/");
out.println("当前jsp文件所在的绝对路径:" + path);
%>
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