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Answers for "connect to database in spring boot"

Java
1

spring application properties mysql jpa

spring.datasource.url=jdbc:mysql://localhost:yourDatabase?serverTimezone=UTC
//set username and password as environment variables under application configuration so that the real ones won't be pushed to github, only their aliases: USERNAME and PASSWORD in this case. 
spring.datasource.username=${USERNAME} // instead of ${USERNAME} you may use a generic one as well, like 'root' but then it will be pushed to github with the app so anyone can see you username and password.
spring.datasource.password=${PASSWORD}
spring.jpa.hibernate.ddl-auto=create-drop //running after the first time (when the tables are created in the database) or later when you want the data remain for later tests you have to change the key word 'create-drop' to 'update' so that the data remains in place. Oops! the database itself without the tables needs to be created manually first.
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL5Dialect
spring.logging.level.org.hibernate.SQL=debug
spring.jpa.show-sql=true
Posted by: Guest on October-28-2020
2

mysql driver spring jpa application.properties

spring.jpa.hibernate.ddl-auto=update
spring.datasource.url=jdbc:mysql://${MYSQL_HOST:localhost}:3306/db_example
spring.datasource.username=springuser
spring.datasource.password=ThePasswordCopy
Posted by: Guest on March-20-2020
0

spring security connect to database

package com.mkyong.config;

import javax.sql.DataSource;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;

@Configuration
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {

	@Autowired
	DataSource dataSource;
	
	@Autowired
	public void configAuthentication(AuthenticationManagerBuilder auth) throws Exception {
		
	  auth.jdbcAuthentication().dataSource(dataSource)
		.usersByUsernameQuery(
			"select username,password, enabled from users where username=?")
		.authoritiesByUsernameQuery(
			"select username, role from user_roles where username=?");
	}	
	
	@Override
	protected void configure(HttpSecurity http) throws Exception {

	  http.authorizeRequests()
		.antMatchers("/admin/**").access("hasRole('ROLE_ADMIN')")
		.and()
		  .formLogin().loginPage("/login").failureUrl("/login?error")
		  .usernameParameter("username").passwordParameter("password")
		.and()
		  .logout().logoutSuccessUrl("/login?logout")
		.and()
		  .exceptionHandling().accessDeniedPage("/403")
		.and()
		  .csrf();
	}
}
Copy
Posted by: Guest on March-22-2020

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