EclipseLink JPA用戶名/密碼查找刪除運行應用程序的記錄

Question

我使用apache shiro來認證用戶，我想簡單地打印用戶名到我的控制檯來檢查我的finder功能是否正常工作，它似乎是什麼時候我將記錄添加到用戶（使用SQL語句，而不是的EclipseLink，在應用程序運行時的記錄被刪除？）

這裏是我如何試圖通過用戶名來檢索單個用戶：

protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authcToken) throws AuthenticationException { 
    UsernamePasswordToken token = (UsernamePasswordToken) authcToken; 
    Map<String, String> map = new HashMap<String, String>(); 
    String tempUsername = token.getUsername(); 
    String password = ""; 
    Users user; 

    // Null username is invalid 
    if (tempUsername == null) { 
     throw new AccountException("Null usernames are not allowed by this realm."); 
    } 
    AuthenticationInfo info = null; 
    // this will query and find the users by the specified username and then return us the single result 
    user = getAuthorizedUser(Users.findUsersesByUsernameEquals(tempUsername)); 
    System.out.print(user.getUsername()); 
    System.out.println("yea the username = "); 
    password = user.getPassword(); 
    info = buildAuthenticationInfo(tempUsername, password.toCharArray()); 
    return info; 
} 
/*Build the required authentication info; Replace with SaltAuthenticationInfo for salted passwords*/ 
protected AuthenticationInfo buildAuthenticationInfo(String username, char[] password) { 
      return new SimpleAuthenticationInfo(username, password, getName()); 
} 

protected Users getAuthorizedUser(TypedQuery<Users> q){ 
    System.out.println("working authentication"); 

     return q.getSingleResult(); 
} 

這是因爲我沒有使用JPA來堅持並添加用戶，而是在我的應用程序之外編寫一條sql語句？

Answer 1

我禁用此屬性<property name="eclipselink.ddl-generation" value="drop-and-create-tables"/>

這是刪除了我的測試記錄，並解決我的問題。