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：
h2-console | 阿超
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：
代码语言：javascript复制/*
* 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～
