Maven+springMVC+JSON实例

package main.java; import java.util.Enumeration; import java.util.Map; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpSession; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.SessionAttributes; //Spring会在调用Controller之前将session中的对象填入Model中 //引自http://www.cnblogs.com/waytofall/p/3460533.html //用户信息 存到缓存服务器里 memcached chcache @Controller @RequestMapping("/user") @SessionAttributes("userId") public class UserController { @RequestMapping(value="/login", method=RequestMethod.GET) public String login ( int id, Model model, HttpServletRequest request, HttpSession session) { model.addAttribute("userId", id); System.out.println("inside login"); System.out.println("--- Model data ---"); Map modelMap = model.asMap(); for (Object modelKey : modelMap.keySet()) { Object modelValue = modelMap.get(modelKey); System.out.println(modelKey + " -- " + modelValue); } System.out.println("*** Session data ***"); Enumeration<String> e = session.getAttributeNames(); while (e.hasMoreElements()) { String s = e.nextElement(); System.out.println(s + " == " + session.getAttribute(s)); } return "/test"; } @RequestMapping(value="/check", method=RequestMethod.GET) public String check ( Model model, HttpServletRequest request, HttpSession session) { System.out.println("inside check"); System.out.println("--- Model data ---"); Map modelMap = model.asMap(); for (Object modelKey : modelMap.keySet()) { Object modelValue = modelMap.get(modelKey); System.out.println(modelKey + " -- " + modelValue); } System.out.println("*** Session data ***"); Enumeration<String> e = session.getAttributeNames(); while (e.hasMoreElements()) { String s = e.nextElement(); System.out.println(s + " == " + session.getAttribute(s)); } return "/test"; } }