Spring Security 创建一个名为 USERS 的表

And*_*son 2 spring h2 spring-security

启动我的应用程序时,Spring Security 在我的 h2 数据库中创建两个表“用户”和“权限”。我的问题是,当我第二次启动应用程序时,数据库已经填充了这两个表,但是 Spring Security 直到想要创建它们。如果表不存在,我如何告诉 Spring Secutiry 仅创建表?或者我应该改变其他东西来解决这个问题?

Spring Secutiry 正在创建我从博客中获得的两个表,这些表描述了我查看过的一些代码。它说:“关于数据模型的一些说明。用户表中没有存储真实的用户名和密码。该表是由 Spring Security 定义的,用于通用用途,而不是特定于社交登录用例。”

博客链接

我得到的错误消息,一些 java 堆栈跟踪,是:

Caused by: org.springframework.jdbc.datasource.init.ScriptStatementFailedException: Failed to execute SQL script statement at line 1 of resource class path resource [org/springframework/security/core/userdetails/jdbc/users.ddl]: 
create table users(username varchar_ignorecase(50) not null primary key,password varchar_ignorecase(500) not null,enabled boolean not null); nested exception is org.h2.jdbc.JdbcSQLException: Table "USERS" already exists; 
SQL statement: create table users(username varchar_ignorecase(50) not null primary key,password varchar_ignorecase(500) not null,enabled boolean not null) [42101-175]
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Caused by: org.springframework.jdbc.datasource.init.ScriptStatementFailedException: Failed to execute SQL script statement at line 1 of resource class path resource [org/springframework/security/core/userdetails/jdbc/users.ddl]:    
create table users(username varchar_ignorecase(50) not null primary key,password varchar_ignorecase(500) not null,enabled boolean not null); nested exception is org.h2.jdbc.JdbcSQLException: Table "USERS" already exists;
SQL statement: create table users(username varchar_ignorecase(50) not null primary key,password varchar_ignorecase(500) not null,enabled boolean not null) [42101-175]
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我不确定代码中发生这种情况的位置。我有一个看起来像这样的 entityManageFactory

@Autowired DataSource dataSource;
@Bean
public EntityManagerFactory entityManagerFactory() {
    HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
    vendorAdapter.setGenerateDdl(true);
    Properties props = new Properties();
    props.put("hibernate.dialect", H2Dialect.class.getName());
    props.put("hibernate.format_sql", "true");
    props.put("spring.jpa.properties.hibernate.hbm2ddl.auto", "update");
    props.put("spring.datasource.dbCreate", "update");
    LocalContainerEntityManagerFactoryBean factory = new LocalContainerEntityManagerFactoryBean();
    factory.setJpaVendorAdapter(vendorAdapter);
    factory.setPackagesToScan("mypackage.demo");
    factory.setDataSource(dataSource);
    factory.setJpaProperties(props);
    factory.afterPropertiesSet();

    return factory.getObject();
}
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And*_*son 6

在我的情况下,在配置 Spring Security 时创建了 USERS 表(和其他一些表)。这是该代码的一部分:

public class SecurityConfiguration extends WebSecurityConfigurerAdapter {

@Autowired
private DataSource dataSource;

@Autowired
public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {
    auth.
        jdbcAuthentication()
        .dataSource(dataSource)
        .withDefaultSchema(); 
}
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如果我从已配置的现有数据库开始并在其中部署数据,我将删除该行:

      .withDefaultSchema(); 
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Spring Security 将使用数据库中的现有表。