详解SpringBoot Controller接收参数的几种常用方式

@GetMapping("/demo/{id}")
public void demo(@PathVariable(name = "id") String id, @RequestParam(name = "name") String name) {
  System.out.println("id="+id);
  System.out.println("name="+name);
}

@PostMapping(path = "/demo1")
public void demo1(@RequestBody Person person) {
  System.out.println(person.toString());
}

@PostMapping(path = "/demo1")
public void demo1(@RequestBody Map<String, String> person) {
  System.out.println(person.get("name"));
}

@PostMapping(path = "/demo2")
public void demo2(Person person) {
  System.out.println(person.toString());
}

public class Person {

  private long id;
  private String name;
  private int age;
  private String hobby;

  @Override
  public String toString(){
    return "name:"+name+";age="+age+";hobby:"+hobby;
  }

  // getters and setters
}

@GetMapping("/demo3")
public void demo3(@RequestHeader(name = "myHeader") String myHeader,
    @CookieValue(name = "myCookie") String myCookie) {
  System.out.println("myHeader=" + myHeader);
  System.out.println("myCookie=" + myCookie);
}

@GetMapping("/demo3")
public void demo3(HttpServletRequest request) {
  System.out.println(request.getHeader("myHeader"));
  for (Cookie cookie : request.getCookies()) {
    if ("myCookie".equals(cookie.getName())) {
      System.out.println(cookie.getValue());
    }
  }
}