使用端口解析连接字符串

Question

我在服务器上有以下连接字符串：

val connStr = "redis://redistogo:fd578d89004321fe@tarpon.redistogo.com:10333/"

我必须使用的redis客户端没有适合这个连接字符串的构造函数，它只有一个构造函数，分别具有主机和端口：

class SomeRedisClient(val host: String, val port: Int) { ...

。以下代码也不起作用：

val url = new java.net.URL(connStr)

错误- java.net.MalformedURLException: unknown protocol: redis

如何解析此连接字符串以将其传递给redis的构造函数？

附注:我不被允许挑选其他redis客户。

Answer 1

使用URI

String connStr = "redis://redistogo:fd578d89004321fe@tarpon.redistogo.com:10333/";
URI uri = new URI(connStr);
System.out.println(uri.getScheme());
System.out.println(uri.getHost());
System.out.println(uri.getPort());

String connStrWithoutPort = connStr.replace(":" + uri.getPort(), "");
System.out.println(connStrWithoutPort);

// or a more safe version (because the user info part might contain a
// password that matches the port, e.g. 
// redis://redistogo:10333@tarpon.redistogo.com:10333/
StringBuilder withoutPort = new StringBuilder();

withoutPort.append(uri.getScheme());
withoutPort.append("://");
String userInfo = uri.getUserInfo();
if (userInfo != null) {
    withoutPort.append(userInfo);
    withoutPort.append("@");
}
withoutPort.append(uri.getHost());

String withoutPortString = withoutPort.toString();