1
我定義UserController和UserRepository和User這樣RestController返回500錯誤而不堆棧跟蹤
UserController.java
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import org.apache.commons.lang3.RandomStringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.crypto.codec.Hex;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
import com.zusn.domain.User;
import com.zusn.repository.UserRepository;
@RestController
@RequestMapping(value = "/user")
public class UserController {
@Autowired
private UserRepository userRepository;
@RequestMapping(value = "/create", method = RequestMethod.POST)
public User createUser(@RequestBody User newUesr) throws NoSuchAlgorithmException{
User user = userRepository.findByUidAndDevice(newUesr.getUid(), newUesr.getDevice());
if(user == null){
MessageDigest md = MessageDigest.getInstance("SHA");
Long now = System.nanoTime();
md.update(now.byteValue());
String random = RandomStringUtils.randomAlphabetic(32);
md.update(random.getBytes());
newUesr.setConsumerKey(String.valueOf(Hex.encode(md.digest())));
return userRepository.save(newUesr);
}else{
return user;
}
}
}
UserRepository.java
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.repository.query.Param;
import org.springframework.stereotype.Repository;
import com.zusn.domain.Devices;
import com.zusn.domain.Providers;
import com.zusn.domain.User;
@Repository
public interface UserRepository extends JpaRepository<User, Long>{
/**
*
* @param uid UID
* @param provider Profider ex) twitter, google+, facebook
* @return User
*/
public User findByUidAndProvider(@Param("uid") String uid, @Param("provider") Providers provider);
/**
*
* @param uid UID
* @param devices Device ex) iOS, Android
* @return User
*/
public User findByUidAndDevice(@Param("uid")String uid, @Param("device") Devices device);
}
User.java
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.OneToOne;
import javax.persistence.Table;
@Entity
@Table(name = "users")
public class User {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name = "id", nullable = false)
private Long id;
@Column(name = "uid", nullable = false)
private String uid;
@Column(name = "provider")
private Providers provider;
@Column(name = "device", nullable = false)
private Devices device;
@Column(name = "consumer_key", nullable = false, unique = true)
private String consumerKey;
@OneToOne(cascade = CascadeType.ALL, fetch=FetchType.LAZY)
private Profile profile;
public User() {
super();
}
public User(String uid, Providers providers, String consumerKey) {
super();
this.uid = uid;
this.provider = providers;
this.consumerKey = consumerKey;
}
public String getConsumerKey() {
return consumerKey;
}
public void setConsumerKey(String consumerKey) {
this.consumerKey = consumerKey;
}
public User(Providers provider){
this.provider=provider;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getUid() {
return uid;
}
public void setUid(String uid) {
this.uid = uid;
}
public Providers getProvider() {
return provider;
}
public void setProvider(Providers provider) {
this.provider = provider;
}
public Profile getProfile() {
return profile;
}
public void setProfile(Profile profile) {
this.profile = profile;
}
public Devices getDevice() {
return device;
}
public void setDevice(Devices device) {
this.device = device;
}
}
當用戶不存在時，換句話說處理第一個if語句時，此方法返回新的User對象。但是當用戶已經存在時，它返回狀態碼500.
然後當它返回500錯誤時它不打印堆棧跟蹤。
所以我不知道它爲什麼會返回500錯誤。請告訴我這段代碼有什麼問題，以及爲什麼它返回500錯誤。