1. Controller.java - PAGE 이동

@Controller

public class UserController {

	@GetMapping("/user/joinForm")
	public String joinForm() {
		
		return "user/joinForm";
	}

2. joinForm.jsp - PAGE

<script src="/blog/js/user.js"></script>

3. user.js - JS_AJAX 처리

	$.ajax({ 
		type: "POST",
		url: "/blog/api/user",
		data: JSON.stringify(data), 
		contentType: "application/json; charset=utf-8",
		dataType: "json"
			}).done(function(resp){
			alert("회원가입 완료");
			console.log(resp);
			location.href = "/blog";
			
			}).fail(function(error){
				alert(JSON.stringify(error));

4. Restcontroller.java _JSON/JPA

@PostMapping("/api/user")
	public ResponseDto<Integer> save(@RequestBody User user) {

		userService.회원가입(user);
		return new ResponseDto<Integer>(HttpStatus.OK.value(),1); 

5. UserService.java

@Autowired
	private BCryptPasswordEncoder encoder;
	
	@Autowired
	private UserRepository userRepository;

	@Transactional
	public void 회원가입(User user ) {
		
		String encodePWD = encoder.encode(user.getPassword());
		user.setPassword(encodePWD);
		user.setRole(RoleType.USER);
		userRepository.save(user);
	}
	 

6. HOME.jsp