问题
I am new to H2 database. For the development purpose I would like to use H2 database and I am having trouble in configuring it with my spring boot web application. I have gone thru several tutorials and SO threads but none could solve my issue. Below are the trails that I have done and none was successful.
Requirement: 1. H2 data base that I can view with web interface( console view) 2. I would like my data to be persisted even if I stop my running web application or even my machine(laptop) so that I do not have to enter all the data once again and can start from where I have left. 3. Would like to change the default port of console(8080) to my own choice(XXXX).
After viewing H2 Features Tried with Server Mode with TCP but was not able to successfully start my application , was not able to view Console(web) application and was not able to change the default port to my own choice of port.
pom.xml:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.javasree</groupId>
<artifactId>familytree.thymeleaf</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>familytree</name>
<packaging>jar</packaging>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<!-- <version>1.5.2.RELEASE</version> -->
<version>2.0.0.RELEASE</version>
</parent>
<properties>
<java.version>1.8</java.version>
<hibernate.version>5.2.3.Final</hibernate.version>
<start- class>com.javasree.spring.familytree.FamilyTreeApplication</start-class>
</properties>
<dependencies>
<!-- This is a web application -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- This is a web application test dependencies -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework.boot/spring- boot-starter-data-jpa -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<!-- thymeleaf -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<!-- hot swapping, disable cache for template, enable live reload -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<optional>true</optional>
</dependency>
<!-- Tomcat embedded container-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<!-- JSTL for JSP -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
<!-- Need this to compile JSP -->
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
<!-- Need this to compile JSP,
tomcat-embed-jasper version is not working, no idea why -->
<dependency>
<groupId>org.eclipse.jdt.core.compiler</groupId>
<artifactId>ecj</artifactId>
<version>4.6.1</version>
<scope>provided</scope>
</dependency>
<!-- hibernate dependencies -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
</dependency>
<!-- Servlet -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.1</version>
<scope>provided</scope>
</dependency>
<!-- <dependency>
<groupId>commons-beanutils</groupId>
<artifactId>commons-beanutils</artifactId>
<version>1.8.0</version>
</dependency> -->
<!-- <dependency>
<groupId>commons-digester</groupId>
<artifactId>commons-digester</artifactId>
<version>2.0</version>
</dependency> -->
<!-- Test -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<!--<version>5.1.36</version>-->
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
</dependency>
<!-- Optional, for bootstrap -->
<dependency>
<groupId>org.webjars</groupId>
<artifactId>bootstrap</artifactId>
<version>3.3.7</version>
</dependency>
<dependency>
<groupId>org.webjars</groupId>
<artifactId>jquery</artifactId>
<version>3.1.1</version>
</dependency>
<dependency>
<groupId>org.thymeleaf.extras</groupId>
<artifactId>thymeleaf-extras-java8time</artifactId>
</dependency>
<dependency>
<groupId>nz.net.ultraq.thymeleaf</groupId>
<artifactId>thymeleaf-layout-dialect</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/oracle/ojdbc6
<dependency>
<groupId>com.oracle</groupId>
<artifactId>ojdbc6</artifactId>
<version>11.2.0.3</version>
</dependency> -->
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>runtime</scope>
</dependency>
</dependencies>
<repositories>
<repository>
<id>codelds</id>
<url>https://code.lds.org/nexus/content/groups/main-repo</url>
</repository>
</repositories>
<build>
<plugins>
<!-- Package as an executable jar/war -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
<version>2.7</version>
<dependencies>
<dependency>
<groupId>org.apache.maven.shared</groupId>
<artifactId>maven-filtering</artifactId>
<version>1.3</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</build>
</project>
Spring boot class:
@SpringBootApplication
@EntityScan(basePackages={"com.javasree.spring.familytree.model"})
@EnableJpaRepositories(basePackages = {
"com.javasree.spring.familytree.web.jpa"})
public class FamilyTreeApplication extends SpringBootServletInitializer{
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder
application){
return application.sources(FamilyTreeApplication.class);
}
public static void main(String[] args) {
try {
Server.createTcpServer("-tcpAllowOthers","-webAllowOthers").start();
} catch (SQLException e) {
e.printStackTrace();
}
new SpringApplicationBuilder(FamilyTreeApplication.class)
//.bannerMode(Mode.CONSOLE)
.build().run(args);
}
}
application.properties:
server.contextPath=/familytree
server.port=7030
# JPA properties
spring.jpa.properties.hibernate.current_session_context_class=org.springframework.orm.hibernate5.SpringSessionContext
spring.data.jpa.repositories.enabled=true
spring.jpa.properties.hibernate.use_sql_comments=true
spring.jpa.show-sql=true
spring.jpa.generate-ddl=false
spring.jpa.properties.hibernate.type=trace
#H2 config
spring.h2.console.enabled=true
spring.h2.console.path=/h2
spring.h2.console.settings.trace=false
# Datasource
spring.datasource.url=jdbc:h2:tcp://localhost:8084/~/test;MODE=MYSQL;AUTO_SERVER=TRUE;
spring.datasource.username=sa
spring.datasource.password=
spring.datasource.driver-class-name=org.h2.Driver
spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
Exception that I am getting:
org.h2.jdbc.JdbcSQLException: Connection is broken: "java.net.ConnectException: Connection refused: connect: localhost:8084" [90067-196]
at org.h2.message.DbException.getJdbcSQLException(DbException.java:345)
at org.h2.message.DbException.get(DbException.java:168)
at org.h2.engine.SessionRemote.connectServer(SessionRemote.java:457)
at org.h2.engine.SessionRemote.connectEmbeddedOrServer(SessionRemote.java:334)
at org.h2.jdbc.JdbcConnection.<init>(JdbcConnection.java:116)
at org.h2.jdbc.JdbcConnection.<init>(JdbcConnection.java:100)
at org.h2.Driver.connect(Driver.java:69)
at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:117)
at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:123)
at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:365)
at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:194)
at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:460)
at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:534)
at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115)
at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112)
Let me know if it's required to post any more code or any other details to better understand the issue.
回答1:
With Spring Boot, you can configure your H2 console servlet like this:
(hint: make sure the right libraries are imported)
import org.h2.server.web.WebServlet;
import org.springframework.boot.context.embedded.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
@Configuration
public class WebConfiguration {
@Bean
ServletRegistrationBean h2servletRegistration(){
ServletRegistrationBean registration = new ServletRegistrationBean( new org.h2.server.web.WebServlet());
registration.addUrlMappings("/h2-console/*");
registration.addInitParameter("webAllowOthers", "true");
registration.addInitParameter("webPort", "7777");// <-- the port your wish goes here
return registration;
}
}
Then you should be able to access H2 via your URL http://localhost:7777/h2-console
(with help of Spring Guru, H2 Console Settings)
回答2:
I had this similar kind of issue when I was trying to use H2 db with Spring Security, after some debugging I find out we have to add the paths in the WebSecurityConfigurerAdapter extending class.
@Override
protected void configure(HttpSecurity http) throws Exception {
http.csrf().disable()
.antMatchers(HttpMethod.GET,"/h2/**").permitAll()
.antMatchers(HttpMethod.POST,"/h2/**").permitAll()
.anyRequest().authenticated();
//to avoid X-Frame-Options header of Spring Security.
http.headers().frameOptions().disable();
reference:X-Frame-Options spring guru
来源：https://stackoverflow.com/questions/49720384/not-able-to-view-h2-database-web-console-and-how-to-change-the-default-h2-port