可视化嵌入式 H2 数据库

Question

I'm trying to configure and use a H2 embedded DB with Spring Boot. I'm using the code provided in the doc :

@Bean
public DataSource dataSource() {
    return new EmbeddedDatabase db = new EmbeddedDatabaseBuilder()
    .generateUniqueName(true)
    .setType(H2)
    .setScriptEncoding("UTF-8")
    .ignoreFailedDrops(true)
    // .addScript("schema.sql") Omit, auto-generate
    .build();
}

The application works fine, I can create and retrieve data, but I would like to visually see it. I've installed the H2 Console Application , but I'm not sure how to connect to the in-memory instance. I go to http://localhost:8082 and then, under JDBC URL I input when I get from the connection's metadata (I've tried with auto-generated and manually specified names), but the H2 Console Application seems to be connected to an empty schema. My tables don't appear there, only the information schema, and I can't SELECT from my tables either, they just don't exist here.

What's going on, what DB am I connecting to? How can I connect to my embedded DB?

Answer 1

If you want to see your tables on h2 console in your application, you don't need to install "Console Application". You just need to enable to see visually and also set your datasource url in application.properties . It seems like that:

spring.datasource.url=jdbc:h2:mem:nprensen;(or if you have already a ds you should write that url)
spring.h2.console.enabled=true
spring.h2.console.path=/console  // this is the path for h2 console:localhost:8080/console

Answer 2

Have you provided the following dependency in your project?

<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-web</artifactId>
</dependency>