@Controller
//@Controller表示该类的实例为控制器类型，不需要再继承或者实现特定接口
@RequestMapping("/user")
//@RequestMapping用在类上面，表示所有的方法都将映射为类级别的的请求/user下面
public class UserController {
private static List<User> userList;
public UserController() {
super();
this.userList = new ArrayList<User>();
}
private static final Log logger = LogFactory.getLog(UserController.class);
//register方法就被映射到如下路径：
//localhost:8080/projectName/user/register,这里的/user对应的是类注解@RequestMapping("/user"），这里的/register对应的是方法注解 @RequestMapping(value="/register",method=RequestMethod.GET)
@RequestMapping(value="/register",method=RequestMethod.GET)
public String register() {
logger.info("register GET方法被调用...");
return "registerForm";
}
@RequestMapping(value="/register",method=RequestMethod.POST)
public String register(
//@RequestParam("loginname")表示将请求中的loginname的值赋值给loginname变量（相当于String loginname = request.getParameter("loginname")）
@RequestParam("loginname") String loginname,
@RequestParam("password")String password,
@RequestParam("username") String username) {
logger.info("register POST方法被调用...");
User user = new User(loginname, password, username);
this.userList.add(user);
return "loginForm";
}
@RequestMapping(value="/login")
public String login(
@RequestParam("loginname") String loginname,
@RequestParam("password") String password,
Model model) {
logger.info("login方法被调用了...");
logger.info("loginname:"+loginname+"password:"+password);
for(User user : userList) {
if(user.getLoginname().equals(loginname) && user.getPassword().equals(password)) {
model.addAttribute("user", user);
return "welcome";
}
}
return "loginForm";
}
}
@Controller,@RequestMapping,@RequestParam的使用方法