Question

在JPAConfiguration.java中，我使用以下参数来连接mySQL数据库。但这不起作用。我的应用程序和mysql服务器是OpenShift上的相同应用程序。

private final String DATABASE_DRIVER = "com.mysql.jdbc.Driver";

private final String DATABASE_URL = "jdbc:mysql://"
            + System.getenv("OPENSHIFT_MYSQL_DB_HOST") + ":"
            + System.getenv("OPENSHIFT_MYSQL_DB_PORT") + "/"
            + "capsule";//System.getenv("OPENSHIFT_APP_NAME");

private final String DATABASE_USERNAME = System.getenv("OPENSHIFT_MYSQL_DB_USERNAME");
private final String DATABASE_PASSWORD = System.getenv("OPENSHIFT_MYSQL_DB_PASSWORD");

请给我一些想法。非常感谢。

Answer 1

对于Spring JPA应用程序，您必须定义以下数据源

@Bean(destroyMethod = "close")
public DataSource dataSource() {
    String username = System.getenv("OPENSHIFT_MYSQL_DB_USERNAME");
    String password = System.getenv("OPENSHIFT_MYSQL_DB_PASSWORD");
    String host = System.getenv("OPENSHIFT_MYSQL_DB_HOST");
    String port = System.getenv("OPENSHIFT_MYSQL_DB_PORT");
    String databaseName = System.getenv("OPENSHIFT_APP_NAME");
    String url = "jdbc:mysql://" + host + ":" + port + "/"+databaseName;
    BasicDataSource dataSource = new BasicDataSource();
    dataSource.setDriverClassName("org.MYSQL.Driver");
    dataSource.setUrl(url);
    dataSource.setUsername(username);
    dataSource.setPassword(password);
    dataSource.setTestOnBorrow(true);
    dataSource.setTestOnReturn(true);
    dataSource.setTestWhileIdle(true);
    dataSource.setTimeBetweenEvictionRunsMillis(1800000);
    dataSource.setNumTestsPerEvictionRun(3);
    dataSource.setMinEvictableIdleTimeMillis(1800000);
    dataSource.setValidationQuery("SELECT version()");

    return dataSource;
}

如果您想查看完整的工作示例，请查看我的github存储库https://github.com/shekhargulati/forumapp

如何将我的Spring应用程序连接到OpenShift上的mySQL服务器？

1 个答案: