生命中的全部偶然,其实都是命中注定。是为宿命。——《宿命》
在apache-shenyu
中也默认用h2
数据库作为默认数据库,方便开发、演示、学习、轻量化部署等
但是我们知道h2
数据库是基于内存的嵌入式数据库,如何让其在运行动态执行sql
呢?一般我们采用h2-console
进行:
今天我们换一种方式,直接使用客户端工具连接,默认的url
肯定是连不上的:
spring:
datasource:
url: jdbc:h2:mem:${HOME:${HOMEDRIVE}${HOMEPATH}}/shenyu;DB_CLOSE_DELAY=-1;MODE=MySQL;
username: sa
password: sa
driver-class-name: org.h2.Driver
因为这里是h2:mem:路径
,即便换成file
也是不允许两个连接的
我们换成tcp
连接,再指定一下目录
spring:
datasource:
url: jdbc:h2:tcp://localhost/${HOME:${HOMEDRIVE}${HOMEPATH}}/Downloads/shenyu-study/shenyu;DB_CLOSE_DELAY=-1;MODE=MySQL;SCHEMA=PUBLIC;
username: sa
password: sa
driver-class-name: org.h2.Driver
然后在springboot
启动类添加:
import org.h2.tools.Server;
public class H2Server {
public static void main(String[] args) throws Exception {
Server server = Server.createTcpServer("-tcpAllowOthers").start();
System.out.println("H2 server started and connection is open.");
System.out.println("URL: jdbc:h2:" + server.getURL() + "/~/Downloads/shenyu-dubbo-study/shenyu");
}
}
例如:
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.shenyu.admin;
import org.h2.tools.Server;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.ldap.LdapAutoConfiguration;
import java.sql.SQLException;
/**
* shenyu admin start.
*/
@SpringBootApplication(exclude = {LdapAutoConfiguration.class})
public class ShenyuAdminBootstrap {
/**
* Main entrance.
*
* @param args startup arguments
*/
public static void main(final String[] args) throws SQLException {
Server server = Server.createTcpServer("-tcpAllowOthers").start();
System.out.println("H2 server started and connection is open.");
System.out.println("URL: jdbc:h2:" + server.getURL() + "/~/shenyu");
SpringApplication.run(ShenyuAdminBootstrap.class, args);
}
}
然后启动项目以后你就可以用客户端工具连接啦:
url
选择:jdbc:h2:tcp://localhost/~/Downloads/shenyu-study/shenyu
用户名和密码都还是sa
,快乐调SQL
吧~