Configure DataSource programmatically in Spring Boot

Question

With Spring Boot I can instantiate a JdbcTemplate with the following   Code    Autowired private JdbcTemplate jdbcTemplate    Properties   spring datasource url jdbc postgresql   my url my port my other stuff spring datasource username my user name spring datasource password my password spring datasource driver-class-name org postgresql Driver   This create a DataSource of class  org apache tomcat jdbc pool DataSource  How do I set the DataSource username password programmatically    We have a policy not to store credentials in plain text and I have to use a specific credential provider where I work

User · Answer

All you need to do is annotate a method that returns a DataSource with  Bean  A complete working example follows    Bean public DataSource dataSource         DataSourceBuilder dataSourceBuilder   DataSourceBuilder create            dataSourceBuilder url dbUrl           dataSourceBuilder username username           dataSourceBuilder password password           return dataSourceBuilder build

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If you re using latest spring boot  with jdbc starter and Hikari  you ll run into  java lang IllegalArgumentException  jdbcUrl is required with driverClassName  To solve this    In your application properties    datasource oracle url youroracleurl   In your application define as bean   Primary is mandatory       Bean  Primary  ConfigurationProperties  datasource oracle   public DataSourceProperties getDatasourceProperties         return new DataSourceProperties        Bean  ConfigurationProperties  datasource oracle   public DataSource getDatasource         return getDatasourceProperties   initializeDataSourceBuilder               username  username               password  password               build

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for springboot 2 1 7 working with url seems not to work  change with jdbcUrl instead    In properties    security        datasource          jdbcUrl  jdbc mysql   ip 3306 security         username  user         password  pass   In java    ConfigurationProperties prefix    security datasource    Bean  dataSource    Primary public DataSource dataSource         return DataSourceBuilder              create                build

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If you want more datesource configs e g   spring datasource test-while-idle true  spring datasource time-between-eviction-runs-millis 30000 spring datasource validation-query select 1   you could use below code   Bean public DataSource dataSource         DataSource dataSource   new DataSource       org apache tomcat jdbc pool DataSource      dataSource setDriverClassName driverClassName       dataSource setUrl url       dataSource setUsername username       dataSource setPassword password       dataSource setTestWhileIdle testWhileIdle            dataSource setTimeBetweenEvictionRunsMillis timeBetweenEvictionRunsMills       dataSource setValidationQuery validationQuery       return dataSource      refer  Spring boot jdbc Connection

User · Answer

As an alternative way you can use DriverManagerDataSource such as   public DataSource getDataSource DBInfo db         DriverManagerDataSource dataSource   new DriverManagerDataSource         dataSource setUsername db getUsername         dataSource setPassword db getPassword         dataSource setUrl db getUrl         dataSource setDriverClassName db getDriverClassName          return dataSource      However be careful about using it  because      NOTE  This class is not an actual connection pool  it does not   actually pool Connections  It just serves as simple replacement for a   full-blown connection pool  implementing the same standard interface    but creating new Connections on every call  reference

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I customized Tomcat DataSource in Spring-Boot 2   Dependency versions    spring-boot  2 1 9 RELEASE tomcat-jdbc  9 0 20   May be it will be useful for somebody   application yml  spring      datasource          driver-class-name  org postgresql Driver         type  org apache tomcat jdbc pool DataSource         url  jdbc postgresql     spring datasource database host    spring datasource database port    spring datasource database name          database              host  localhost             port  5432             name  rostelecom         username  postgres         password  postgres         tomcat              validation-query  SELECT 1             validation-interval  30000                        test-on-borrow  true             remove-abandoned  true             remove-abandoned-timeout  480             test-while-idle  true             time-between-eviction-runs-millis  60000             log-validation-errors  true             log-abandoned  true   Java   Bean  Primary  ConfigurationProperties  spring datasource tomcat   public PoolConfiguration postgresDataSourceProperties         return new PoolProperties        Bean name    primaryDataSource    Primary  Qualifier  primaryDataSource    ConfigurationProperties prefix    spring datasource   public DataSource primaryDataSource         PoolConfiguration properties   postgresDataSourceProperties        return new DataSource properties       The main reason why it had been done is several DataSources in application and one of them it is necessary to mark as a  Primary

User · Answer

You can use DataSourceBuilder if you are using jdbc starter  Also  in order to override the default autoconfiguration bean you need to mark your bean as a  Primary  In my case I have properties starting with datasource postgres prefix   E g   ConfigurationProperties prefix    datasource postgres    Bean  Primary public DataSource dataSource         return DataSourceBuilder          create            build        If it is not feasible for you  then you can use   Bean  Primary public DataSource dataSource         return DataSourceBuilder          create            username              password              url              driverClassName              build

User · Answer

My project of spring-boot has run normally according to your assistance   The yaml datasource configuration is   spring       DataSourceAutoConfiguration  amp  DataSourceProperties    datasource      name  ds-h2     url  jdbc h2 D  work workspace fdata DATABASE TO UPPER false     username  h2     password  h2     driver-class  org h2 Driver   Custom DataSource   Configuration  Component public class DataSourceBean         ConfigurationProperties prefix    spring datasource        Bean      Primary     public DataSource getDataSource             return DataSourceBuilder                  create                      url  jdbc h2 D  work workspace fork gs-serving-web-content initial data fdata DATABASE TO UPPER false                      username  h2                      password  h2                      driverClassName  org h2 Driver                    build

[java] Configure DataSource programmatically in Spring Boot

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