Java 有一个错误 ReferenceError: "println" is not defined in <eval> at line number 1

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解决时间 2021-03-24 16:55

提问者网友：动次大次蹦擦擦
2021-03-24 05:49

最佳答案

五星知识达人网友：风格不统一
2021-03-24 07:13

import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import javax.script.ScriptException;

public class demo01
{
public static void main(String[] args) throws ScriptException
{
ScriptEngineManager sem = new ScriptEngineManager();
ScriptEngine se = sem.getEngineByName("js");
String str = "var user={name:'Eric '};";
str += "println(user.name)";
se.eval(str);
}
}追问ReferenceError: "println" is not defined in at line number 1

全部回答

1楼网友：旧脸谱
2021-03-24 08:55

println改成print即可。

2楼网友：几近狂妄
2021-03-24 08:24

package www.google.cn;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import javax.script.ScriptException;
public class demo1 {
    public static void main(String[] args) throws ScriptException {
        ScriptEngineManager sem=new ScriptEngineManager();
        ScriptEngine engine=sem.getEngineByName("javascript");
        String str="var user={name:'lz',age:18,hobbies:['programming','js']};";
        str+="print(user.name);";
        engine.eval(str);
        System.out.println();
    }
}
我把println改成print就没错了

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