Spring boot + spring boot 安全启动错误

Question

I'm doing a MVC project with spring boot and spring security and jsp. I'm just training my spring and I have the same project running without spring boot. Currently I moved to springboot and when I try to start I get:

2020-05-09 17:28:38.521 INFO 21308 --- [ restartedMain] oac.c.C.[Tomcat].[localhost].[/]: Initializing Spring embedded WebApplicationContext 2020-05-09 17:28:38.527 INFO 21308 --- [ restartedMain] osweb.context.ContextLoader: Root WebApplicationContext: initialization completed in 6813 ms 2020-05-09 17:28:38.753 WARN 21308 --- [ restartedMain] ConfigServletWebServerApplicationContext: Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'inMemoryDatabaseShutdownExecutor' defined in class path resource [org/springframework/boot/devtools/autoconfigure/DevToolsDataSourceAutoConfiguration.class]: Unsatisfied dependency expressed through method 'inMemoryDatabaseShutdownExecutor' param eter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Hikari.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.zaxxer.hikari.HikariDataSource]: Factory method 'dataSource' threw exception; nested exception is org.springframework.boot.autoconfigure.jdbc.DataSourceProperties$DataSourceBeanCreationException: Failed to determine a suitable driver class 2020-05-09 17:28:38.769 INFO 21308 --- [ restartedMain] o.apache.catalina.core.StandardService: Stopping service [Tomcat] 2020-05-09 17:28:38.826 INFO 21308 --- [ restartedMain] ConditionEvaluationReportLoggingListener:

*************************** APPLICATION FAILED TO START

---

Description:

Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.

Reason: Failed to determine a suitable driver class

I have no idea what is happening.

application.properties

# JDBC properties
#
app.datasource.url=jdbc:mysql://localhost:3306/web_customer_tracker?useSSL=false&serverTimezone=UTC
app.datasource.username=springstudent
app.datasource.password=springstudent

# Spring Data JPA properties
spring.data.jpa.repository.packages=com.crm.dao
spring.data.jpa.entity.packages-to-scan=com.crm.beans

#
# SECURITY JDBC properties
#
security.datasource.jdbc-url=jdbc:mysql://localhost:3306/spring_security_demo_bcrypt?useSSL=false&serverTimezone=UTC
security.datasource.username=springstudent
security.datasource.password=springstudent
security.datasource.driver-class-name= com.mysql.jdbc.Driver

Configuration:

    @Configuration
    @EnableWebSecurity
    public class DemoSecurityConfig extends WebSecurityConfigurerAdapter {

        // add a reference to our security data source

        @Autowired
        @Qualifier("securityDataSource")
        private DataSource securityDataSource;


        @Override
        protected void configure(AuthenticationManagerBuilder auth) throws Exception {

            auth.jdbcAuthentication().dataSource(securityDataSource);

        }

        @Override
        public void configure(WebSecurity web) throws Exception {
            web.ignoring().antMatchers("/resources/**");
        }

        @Override
        protected void configure(HttpSecurity http) throws Exception {

            System.out.println("aplicando configuracion");
            http.authorizeRequests()
            .antMatchers("/employees/showForm*").hasAnyRole("MANAGER", "ADMIN")
            .antMatchers("/employees/save*").hasAnyRole("MANAGER", "ADMIN")
            .antMatchers("/employees/delete").hasRole("ADMIN")
            .antMatchers("/employees/**").hasRole("EMPLOYEE")
            .antMatchers("/resources/**").permitAll()
            .antMatchers("/showMyLoginPage").permitAll()
            .and()
            .formLogin()
                .loginPage("/showMyLoginPage")
                .loginProcessingUrl("/authenticateTheUser")
                .permitAll()
            .and()
            .logout().permitAll()
            .and()
            .exceptionHandling().accessDeniedPage("/access-denied");

        }


    }

Configuration:

    @Configuration
@EnableJpaRepositories(basePackages={"${spring.data.jpa.repository.packages}"})
public class DemoDataSourceConfig {

    @Primary
    @Bean
    @ConfigurationProperties(prefix="app.datasource")
    public DataSource appDataSource() {
        return DataSourceBuilder.create().build();
    }

    @Bean
    @ConfigurationProperties(prefix="spring.data.jpa.entity")
    public LocalContainerEntityManagerFactoryBean entityManagerFactory(EntityManagerFactoryBuilder builder, DataSource appDataSource) {
        return builder
                .dataSource(appDataSource)
                .build();
    }

    @Bean
    @ConfigurationProperties(prefix="security.datasource")
    public DataSource securityDataSource() {
        return DataSourceBuilder.create().build();
    }
}

Thanks for your help in advance.

Answer 1

In your properties file...

Change app.datasource.* to spring.datasource.* like below..

# JDBC properties
#
spring.datasource.url=jdbc:mysql://localhost:3306/web_customer_tracker?useSSL=false&serverTimezone=UTC
spring.datasource.username=springstudent
spring.datasource.password=springstudent

Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.

This error message gives hint that when Soring looks for database URL property.. (they have a fixed property name for it.. like spring.datasource.* ) Or Else.. if you are using any embedded database like DB2 then it does not require any url / username / password only the dependency is enough.

In your case, it's not embedded database.. so the property name spring looks for, must be provided correctly.