feat: 회원가입 유효성검사

backend/build.gradle

@@ -30,6 +30,10 @@ dependencies {
 	runtimeOnly group: 'io.jsonwebtoken', name: 'jjwt-jackson', version: '0.11.5'
 	runtimeOnly group: 'io.jsonwebtoken', name: 'jjwt-impl', version: '0.11.5'
 	implementation group: 'io.jsonwebtoken', name: 'jjwt-api', version: '0.11.5'
+	implementation group: 'org.springframework.boot', name: 'spring-boot-starter-mail', version: '3.2.5'
+	implementation 'org.springframework.boot:spring-boot-starter-mail'
+
+
 
 	implementation group: 'org.glassfish.jaxb', name: 'jaxb-runtime', version: '4.0.5'
 

backend/src/main/java/com/edufocus/edufocus/user/controller/UserController.java

@@ -34,7 +34,13 @@ public class UserController {
         userService.join(user);
         return ResponseEntity.ok("User registered successfully");
     }
+    @PostMapping("/findpassword/{user_id}")
+    public ResponseEntity<String> findpassword(@PathVariable("user_id") Long user_id) throws Exception {
 
+        userService.userCheck(user_id);
+        return ResponseEntity.ok("임시 비밀번호가 이메일로 전송되었습니다.");
+
+    }
 //
 //    @PostMapping("/login")
 //    public ResponseEntity<User> login(@RequestBody User user) {

backend/src/main/java/com/edufocus/edufocus/user/model/entity/MailDto.java

@@ -0,0 +1,20 @@
+package com.edufocus.edufocus.user.model.entity;
+
+import lombok.Data;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+import lombok.ToString;
+
+@Getter
+@Setter
+@NoArgsConstructor
+@ToString
+@Data
+public class MailDto {
+
+    private String address;
+    private String title;
+    private String message;
+
+}

backend/src/main/java/com/edufocus/edufocus/user/model/entity/MemberChangeDto.java

@@ -0,0 +1,19 @@
+package com.edufocus.edufocus.user.model.entity;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+import lombok.ToString;
+
+@Getter
+@Setter
+@NoArgsConstructor
+@AllArgsConstructor
+@ToString
+@Data
+public class MemberChangeDto {
+    Long id;
+    String password;
+}

backend/src/main/java/com/edufocus/edufocus/user/model/entity/User.java

@@ -2,6 +2,8 @@ package com.edufocus.edufocus.user.model.entity;
 
 import com.edufocus.edufocus.qna.entity.Qna;
 import jakarta.persistence.*;
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.Pattern;
 import lombok.AllArgsConstructor;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
@@ -25,7 +27,12 @@ public class User {
 
 
     @Column(name = "user_id", unique = true, nullable = false)
+    @Pattern(regexp = "(?=.*[0-9])(?=.*[a-zA-Z])(?=.*\\W)(?=\\S+$).{8,16}", message = "비밀번호는 8~16자 영문 대 소문자, 숫자, 특수문자를 사용하세요.")
+    @NotBlank(message = "아이디는 필수 입력 값입니다.")
+
     private String userId;
+
+    @Pattern(regexp = "^(?:\\w+\\.?)*\\w+@(?:\\w+\\.)+\\w+$", message = "이메일 형식이 올바르지 않습니다.")
     private String email;
     private String password;
     @Enumerated(EnumType.STRING) // 혹은 EnumType.ORDINAL

backend/src/main/java/com/edufocus/edufocus/user/model/repository/UserRepository.java

@@ -23,6 +23,12 @@ public interface UserRepository extends JpaRepository<User,Long> {
     @Query("UPDATE User u SET u.refreshToken = NULL WHERE u.id = :id")
     void deleteRefreshToken(@Param("id") Long id);
 
+    @Transactional
+    @Modifying
+    @Query("UPDATE User u set u.password = :password where u.id= :id")
+    void updatePassword(@Param("id") Long id , @Param("password") String password);
+
+
     Optional<User> findByUserId(String userId);
 
 }

backend/src/main/java/com/edufocus/edufocus/user/model/service/UserService.java

@@ -9,4 +9,7 @@ public interface UserService {
       String getRefreshToken(Long id) throws Exception;
       void deleteRefreshToken(Long id) throws Exception;
        User userInfo(Long id) throws Exception;
+    void sendEamail(User user) throws Exception;
+     void userCheck(Long id) throws  Exception;
+
 }

backend/src/main/java/com/edufocus/edufocus/user/model/service/UserServiceImpl.java

@@ -1,12 +1,16 @@
 package com.edufocus.edufocus.user.model.service;
 
 
+import com.edufocus.edufocus.user.model.entity.MailDto;
+import com.edufocus.edufocus.user.model.entity.MemberChangeDto;
 import com.edufocus.edufocus.user.model.entity.User;
 import com.edufocus.edufocus.user.model.exception.UserException;
 import com.edufocus.edufocus.user.model.repository.UserRepository;
 import jakarta.transaction.Transactional;
 import lombok.RequiredArgsConstructor;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.mail.SimpleMailMessage;
+import org.springframework.mail.javamail.JavaMailSender;
 import org.springframework.stereotype.Service;
 
 import java.sql.SQLException;
@@ -19,8 +23,10 @@ import java.util.Optional;
 @RequiredArgsConstructor
 public class UserServiceImpl implements UserService{
 
-    @Autowired
+
     private final UserRepository userRepository;
+    private final JavaMailSender mailSender;
+
 
 
     public void join(User user)
@@ -74,6 +80,74 @@ public class UserServiceImpl implements UserService{
         }
 
     }
+
+    @Override
+    public void sendEamail(User user) throws Exception {
+        MailDto mailDto = createMailAndChargePassword(user);
+
+        System.out.println("이메일 전송 완료");
+        SimpleMailMessage message = new SimpleMailMessage();
+
+
+
+        message.setTo(mailDto.getAddress());
+        message.setFrom("passfinder111@gmail.com");
+        message.setSubject(mailDto.getTitle());
+        message.setText(mailDto.getMessage());
+        System.out.println("!!!!!!!!!!!!!!!!!!"+ message);
+
+        mailSender.send(message);
+
+
+    }
+
+    public MailDto createMailAndChargePassword(User user) throws SQLException {
+        String str = getTempPassword();
+        MailDto dto = new MailDto();
+        dto.setAddress(user.getEmail());
+        dto.setTitle(user.getUserId()+"님의 임시비밀번호 안내 이메일 입니다.");
+        dto.setMessage("안녕하세요. EduFoucs 입니다.  "+ "\n"+ "임시비밀번호 안내 관련 메일 입니다." + "\n[" + user.getName() + "]" + "님의 임시 비밀번호는 "
+                + str + " 입니다.");
+
+        System.out.println(dto);
+
+        MemberChangeDto memberChangeDto = new MemberChangeDto(user.getId(),str);
+        System.out.println(memberChangeDto);
+        userRepository.updatePassword(memberChangeDto.getId(),memberChangeDto.getPassword());
+        System.out.println();
+
+        return dto;
+    }
+
+    @Override
+    public void userCheck(Long id) throws Exception {
+
+        User user = userRepository.findById(id).orElse(null);
+
+
+        if(user == null)
+        {
+            System.out.println("불가");
+            throw new RuntimeException("유효하지 않은 아이디입니다. 다시 입력하세요");
+
+        }
+        else {
+
+            sendEamail(user);
+        }
+    }
+    public String getTempPassword() {
+        char[] charSet = new char[] { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F',
+                'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z'};
+        String str = "";
+
+        int idx = 0;
+        for (int i=0; i<10; i++) {
+            idx = (int) (charSet.length * Math.random());
+            str += charSet[idx];
+        }
+        return str;
+    }
     @Override
     public void saveRefreshToken(Long id, String refreshToken) throws Exception {
         userRepository.saveRefreshToken(id, refreshToken);

backend/src/main/resources/application.properties

@@ -23,4 +23,15 @@ spring.mvc.pathmatch.matching-strategy=ant_path_matcher
 
 spring.jpa.database=mysql
 spring.jpa.hibernate.ddl-auto=create
-spring.jpa.show-sql=true
+spring.jpa.show-sql=true
+
+
+spring.mail.host=smtp.gmail.com
+spring.mail.port=587
+#spring.mail.username=ssafytestpjt
+#spring.mail.password=trpjbxqialufuzih
+spring.mail.username=passfinder111@gmail.com
+spring.mail.password=mnlyfkiprltjlsmw
+
+spring.mail.properties.mail.smtp.auth=true
+spring.mail.properties.mail.smtp.starttls.enable=true