求请教:jsp页面中form表单的action如下
<form action="sub" method="post">
<div id="tit">候选人编号</div>
<input id="hxr" type="text" value="-1"/>
<input id="sub" type="submit" value="投票"/>
</form>
xml是这样的
<servlet>
<servlet-name>sub</servlet-name>
<servlet-class>com.my.svlt.sub</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>sub</servlet-name>
<url-pattern>/sub</url-pattern>
</servlet-mapping>
这是servlet
package com.my.svlt;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class sub extends HttpServlet {
private static final long serialVersionUID = 1L;
@Override
public void service(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
System.out.println("AdressName :"+req.getLocalName());
System.out.println("localAdress :"+req.getLocalAddr());
}
}
那么问题来了
1.我Servlet中两条输出语句想通过req获取用户设备名称,IP地址。输出的一直是我本机的信息,很绝望,且显红那段语法应该是没有问题的,不太明白
2.我下载的中文版API里面没有javax这个包里面的信息,很不方便,怎么添加或者有完整一点的Api求分享