注解的方式配置servlet以及获取表单中提交的元素（单值元素和多值元素）

Servlet3.0是Java EE6规范的一部分所以说使用注解需要在JAVA EE6以上 （Tomact7.0全面支持注解）

package servlet;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@WebServlet("/reg")
public class StuRegServlet extends HttpServlet {

	private static final long serialVersionUID = 1L;

	@Override
	protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
		// 设置请求字符集
		req.setCharacterEncoding("UTF-8");
		// 获取表单提交的元素（单值元素）
		String name = req.getParameter("stuName");
		String sex = req.getParameter("sex");
		String city = req.getParameter("city");
		String comment = req.getParameter("comment");
		// 获取表单提交的元素（多值元素）
		String[] subArr = req.getParameterValues("subject");
		// 设置响应内容类型和字符集
		resp.setContentType("text/html;charset=UTF-8");
		// 获取响应输出流
		PrintWriter out = resp.getWriter();
		out.write("");
		out.write("	");
		out.write("		");
		out.write("			");
		out.write("			");
		out.write("		");
		out.write("		");
		out.write("			
学生信息如下：
");
		String subjectString = "暂无所学课程";
		if (subArr != null) {
			subjectString = "";
			for (String s : subArr) {
				subjectString += s + ",";
			}
		}
		out.write("			
" + name + sex + "居住地为：" + city + "所学课程有：" + subjectString + " 个人介绍：" + comment
				+ "
");
		out.write("		");
		out.write("	");
		out.flush();
		out.close();
	}
}