我有一個使用 Spring 構建的小型 Web 應用程序，并且可以從curl 和 postman 訪問 REST 服務。如果我嘗試使用 Web 應用程序上托管的 JavaScript 訪問它們，則會收到 405 錯誤。什么可能導致這種情況？我意識到代碼中存在不安全性，這只是一個倉促的課程項目，所以它們并不重要。如果我復制 JavaScript 代碼并在瀏覽器的控制臺中運行它，它就會起作用。用戶等級import org.springframework.data.annotation.Id;public class User {    @Id    public String id;    private String username;    private String firstName;    private String lastName;    private String password;    private int zipCode;    private int jacketThreshold;    private int coatThreshold;    public User() {}    public User(String username)    {        this.username = username;    }    public User(String firstName, String lastName, String password) {        this.firstName = firstName;        this.lastName = lastName;        this.password = password;    }    public User(String username, String password, int zipCode) {        this.username = username;        this.password = password;        this.zipCode = zipCode;    }    public String getId() {        return id;    }    public void setId(String id) {        this.id = id;    }    public String getUsername() {        return username;    }    public void setUsername(String username) {        this.username = username;    }    public String getFirstName() {        return firstName;    }    public void setFirstName(String firstName) {        this.firstName = firstName;    }    public String getLastName() {        return lastName;    }    public void setLastName(String lastName) {        this.lastName = lastName;    }    public String getPassword() {        return password;    }    public void setPassword(String password) {        this.password = password;    }    public int getZipCode() {        return zipCode;    }    public void setZipCode(int zipCode) {        this.zipCode = zipCode;    }    public int getJacketThreshold() {        return jacketThreshold;    }    public void setJacketThreshold(int jacketThreshold) {        this.jacketThreshold = jacketThreshold;    }