Cannot invoke “javax.script.ScriptEngine.eval(String)” because “engine” is null

黑夜的行者@冷

已于 2024-05-09 14:05:33 修改

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分类专栏：错误日志文章标签： java

于 2024-05-09 14:03:12 首次发布

本文链接：https://blog.youkuaiyun.com/qq_29299555/article/details/138611704

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“ Cannot invoke “javax.script.ScriptEngine.eval(String)” because “engine” is null ”
jdk17下执行以下代码发生报错

String script = " function add (a, b) { " +
                "         var sum = a + b;  " +
                //js调用java类
                "         java.lang.System.out.println(\"Script sum=\" + sum); " +
                "         return java.lang.Integer.valueOf(sum);  " +
                "}";
        try {
   
            ScriptEngineManager manager = new ScriptEngineManager(