用途
项目中使用了 dubbo，注册中心使用的 zookeeper，使用 zookeeper 实现了一个简单的分布式锁（依赖 curator），因为配置文件存在 dubbo.registry 配置，为了直接使用这个地址来创建分布式锁，写了一个简单的方法来提取 zookeeper 地址。
效果
dubbo.registry 有多种配置方式，支持所有情况，下面是常见的例子和提取结果：
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zookeeper: //localhost:2181 zookeeper: //localhost:2181?client=zkclient zookeeper: //localhost:2181?backup=localhost:2182,localhost:2183 zookeeper: //localhost:2181?client=zkclient&backup=localhost:2182,localhost:2183 ------------结果------------ optional[localhost: 2181 ] optional[localhost: 2181 ] optional[localhost: 2181 ,localhost: 2182 ,localhost: 2182 ] optional[localhost: 2181 ,localhost: 2183 ,localhost: 2183 ] |
代码
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import java.util.optional; public class zookeeperurl { public static final string prefix = "zookeeper://" ; public static final string backup = "backup=" ; public static optional<string> convertdubboregistrytozookeeperurl(string dubboregistry){ stringbuilder zookeeperurl = new stringbuilder(); if (dubboregistry != null && dubboregistry.startswith(prefix)){ dubboregistry = dubboregistry.substring(prefix.length()); int index = dubboregistry.indexof( "?" ); if (index > 0 ){ zookeeperurl.append(dubboregistry.substring( 0 , index)); dubboregistry = dubboregistry.substring(index + 1 ); string[] dubboregistries = dubboregistry.split( "&" ); for ( int i = 0 ; i < dubboregistries.length; i++) { if (dubboregistries[i].startswith(backup)){ string[] backups = dubboregistries[i].substring(backup.length()).split( "," ); for ( int j = 0 ; j < backups.length; j++) { zookeeperurl.append( "," ).append(backups[i]); } } } } else { zookeeperurl.append(dubboregistry); } return optional.of(zookeeperurl.tostring()); } return optional.empty(); } public static void main(string[] args) { system.out.println(convertdubboregistrytozookeeperurl( "zookeeper://localhost:2181" )); system.out.println(convertdubboregistrytozookeeperurl( "zookeeper://localhost:2181?client=zkclient" )); system.out.println(convertdubboregistrytozookeeperurl( "zookeeper://localhost:2181?backup=localhost:2182,localhost:2183" )); system.out.println(convertdubboregistrytozookeeperurl( "zookeeper://localhost:2181?client=zkclient&backup=localhost:2182,localhost:2183" )); } } |
总结
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原文链接：https://blog.csdn.net/isea533/article/details/84062301
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