SpringSecurity默认数据库模型的认证与授权Demo

package com.zcw.demospringsecurity.demo3;


import org.apache.tomcat.jdbc.pool.DataSource;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.security.core.userdetails.User;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.provisioning.JdbcUserDetailsManager;


/**
 * @ClassName : MyJdbcUserDetailsManager
 * @Description : SpringSecurity默认数据库模型的认证与授权Demo
 * @Author : Zhaocunwei
 * @Date: 2020-04-10 17:36
 */
public class MyJdbcUserDetailsManager {
//    <!-- https://mvnrepository.com/artifact/org.apache.tomcat/tomcat-jdbc -->
//<dependency>
//    <groupId>org.apache.tomcat</groupId>
//    <artifactId>tomcat-jdbc</artifactId>
//    <version>9.0.31</version>
//</dependency>
    @Autowired
    private DataSource dataSource;

    @Bean
    public UserDetailsService userDetailsService(){
        JdbcUserDetailsManager jdbcUserDetailsManager = new JdbcUserDetailsManager();
        jdbcUserDetailsManager.setDataSource(dataSource);
        if(!jdbcUserDetailsManager.userExists("haha")){
            jdbcUserDetailsManager.createUser(User.withUsername("haha").password("1234567890").roles("USER").build());
        }
        if(!jdbcUserDetailsManager.userExists("admin12312312")){
            jdbcUserDetailsManager.createUser(User.withUsername("admin12312312").password("12000000").roles("USER","ADMIN").build());
        }
        return jdbcUserDetailsManager;
    }
    /***
     * <h1>createUser函数实际上执行了下面的sql语句</h1>
     * insert into users(username,password,enabled) values(?,?,?)
     */
}