1、申明RESTful控制器 springboot已经集成了序列化反序列化,并默认使用utf-8编码格式,不会出现中文乱码问题。
1 2 3 4 5 6 @RestController 为注解@ResponseBody 和@Controller 的组合@RestController public  class  TestRestAction   {	 } 
 
2、组合注解 @PostMapping 为组合注解@RequestMapping(method=RequestMethod.POST)
@GetMapping 为组合注解@RequestMapping(method=RequestMethod.GET)
3、从请求参数中自动获取值 1 2 3 4 5 6 7 8 9 10 11 12 @PostMapping ("login" )public  String login (@RequestParam(name="username" ,required=false ) String username,		@RequestParam (name="password" ,required=false ) String password)  {	 	if (username == null  || password == null ) { 		return  "Error" ; 	} 	if (username.equals(password)) { 		return  "hello world" ; 	} 	return  "Error" ; } 
 
4、从URL地址中获取值 1 2 3 4 @GetMapping ("update/{id}" )public  String update (@PathVariable(name="id" ) Integer id)  {	return  "hello :"  +id; } 
 
5、自动序列化反序列化 1 2 3 4 5 6 7 8 9 @PostMapping ("postUser" )public  User postUser (User user)   {	System.out.println(user); 	User u = new  User(); 	u.setId(1 ); 	u.setUsername("wxtx" ); 	u.setPasswd("123456" ); 	return  u; } 
 
对象结构
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 public  class  User   {	private  Integer id; 	private  String username; 	private  String passwd; 	public  Integer getId ()   { 		return  id; 	} 	public  void  setId (Integer id)   { 		this .id = id; 	} 	public  String getUsername ()   { 		return  username; 	} 	public  void  setUsername (String username)   { 		this .username = username; 	} 	public  String getPasswd ()   { 		return  passwd; 	} 	public  void  setPasswd (String passwd)   { 		this .passwd = passwd; 	} 	@Override  	public  String toString ()   { 		return  "User [id="  + id + ", username="  + username + ", passwd="  + passwd + "]" ; 	} 	 } 
 
springboot会将请求参数自动组装成对象。请求参数如图:
返回值:
1 2 3 4 5 {   "id": 1,   "username": "wxtx",   "passwd": "123456" }