RequestMapping(value = "/form2")
  @ResponseBody
  public String form2(@RequestParam String name){
    logger.info("name=" + name );
    return "";
  }

 @RequestMapping(value = "/form")
  @ResponseBody
  public String form(String name, Integer age) {
    logger.info("name=" + name + "," + "age=" + age);
    return "";
  }

@RequestMapping(value = "/names")
  @ResponseBody
  public String names(@RequestParam String[] name) {
    logger.info("name=" + Arrays.asList(name));
    return Arrays.asList(name).toString();
  }

@RequestMapping("/user/{id}")
  @ResponseBody
  public String getUser(@PathVariable Long id) {
    return String.valueOf(id);
  }

 @RequestMapping("/getCookie")
  @ResponseBody
  public String getCookie(@CookieValue("JSESSIONID") String sessionId) {
    return sessionId;
  }

public class Role implements Serializable {

  private String id;
}

public class User implements Serializable {

  private String id;

  private Role role;
}

@RequestMapping("/getUserByModel")
  @ResponseBody
  public String getUserByModel(@ModelAttribute("user") User user) {
    logger.info(user.toString());
    return "";
  }

 @ModelAttribute("user")
  public User getUser(String userId) {
    User user = new User();
    user.setId("11");
    Role role=new Role();
    role.setId("123");
    user.setRole(role);
    return user;
  }

 
   @RequestMapping("/getUserModel")
  @ResponseBody
  public String getUserModel(@ModelAttribute User user) {
    return user.toString();
  }

 @RequestMapping("/setSession")
  @ResponseBody
  public String setSession(
      HttpSession session) {
    City city = new City();
    city.setCityName("shanghai");
    session.setAttribute("city", city);
    return city.toString();
  }

//在类头部添加需要的session属性
@Controller
@SessionAttributes(value = {"city"})
public class TestController {
 @RequestMapping("/getSession")
  @ResponseBody
  public String getSession(@ModelAttribute City city) {
    return city.toString();
  }
}

 @RequestMapping("/clearSession")
  @ResponseBody
  public String clearSession(SessionStatus status) {
    status.setComplete();
    return "success";
  }

 @RequestMapping("/getUserByJson")
  @ResponseBody
  public String getUserByJson(@RequestBody User user){
    return user.toString();
  }

{
  "id":"123"
}

 @RequestMapping("/getFile")
  @ResponseBody
  public String getFile(@RequestPart("image") MultipartFile file){
    System.out.println(file.getName()+","+file.getSize());
    return "success";
  }