Clojure/Java 连接到 REPL 时出错 - java.io.FileNotFoundException: 找不到 'clojure/core/server__init.class

Question

我在 Windows 10。我成功编译并运行这个 jar。但是，当我尝试从 telnet 连接到 Socket REPL 时，出现此错误，telnet 写道 Connection closed by foreign host.

错误

Exception in thread "Clojure Connection mine 1" java.io.FileNotFoundException: Could not locate 'clojure/core/server__init.class or 'clojure/core/server.clj on classpath.

你能解释一下哪里出了问题吗？ :(

package com.echo;

import clojure.java.api.Clojure;
import clojure.lang.IFn;
import clojure.lang.RT;
import clojure.lang.Var;
import clojure.lang.Symbol;

public class Echo {
public static void main(String[] args) {


    try {
        IFn plus = Clojure.var("clojure.core", "+");

        System.out.println( plus.invoke(1, 2).getClass().getSimpleName() );

        IFn require = Clojure.var("clojure.core", "require");
        require.invoke(Clojure.read("clojure.core.server"));

        IFn startServer = Clojure.var("clojure.core.server","start-server");
        //Object options = Clojure.read("\"{:port 4555 :accept 'clojure.core.server/repl :name :repl2 :server-daemon false}\"");

        startServer.invoke(
            Clojure.read("{:port 4555 :accept 'clojure.core.server/repl :name mine :server-daemon false}")
        );

        System.out.println( "Started" );


    }
    catch(Exception e)
        {
            System.out.println(  e.getMessage() );
        }
    }

}

我运行喜欢这个 java -cp ".\target\echo-1.0-SNAPSHOT.jar;C:\lib\ext\clojure-1.8.0.jar" com.echo.Echo

Answer 1

您不应引用从字符串中读取的符号：使用 clojure.core.server/repl 而不是 'clojure.core.server/repl。引用用于防止求值；但由于您没有评估，这只会导致在不属于它的地方抛出一个额外的引号。

Clojure/Java 连接到 REPL 时出错 - java.io.FileNotFoundException: 找不到 'clojure/core/server__init.class

Clojure/Java error when connecting to REPL - java.io.FileNotFoundException: Could not locate 'clojure/core/server__init.class

clojure

read-eval-print-loop

clojure-java-interop

clojure-repl