问题描述
我正在尝试用Java代码运行JS函数,但是JS函数没有执行,因为它有一些第三方库需要加载。
JsFunction.js
load('crypto-js-3.1.9/crypto-js.js');
var encrypterId = function(name) {
var context_data = {"referralId": name};
var secret = CryptoJS.enc.Utf8.parse(JSON.stringify(context_data))
var encoded_referral_id = CryptoJS.enc.Base64.stringify(secret);
return encoded_referral_id;
}
JavaCode:
public static void rundisplay() {
ScriptEngine engine = new ScriptEngineManager().getEngineByName("nashorn");
try {
engine.eval(new FileReader("./resources/JsFunction.js"));
invocable invocable = (invocable) engine;
Object result;
result = invocable.invokeFunction("encrypterId","827AE1001sdsj213jasu721kkao@1sa");
System.out.println(result);
} catch (FileNotFoundException | NoSuchMethodException | ScriptException e) {
e.printstacktrace();
}
}
例外:
javax.script.ScriptException: TypeError: Cannot load script from crypto-js-3.1.9/crypto-js.js in <eval> at line number 1
at jdk.scripting.nashorn/jdk.nashorn.api.scripting.NashornScriptEngine.throwAsScriptException(NashornScriptEngine.java:469)
at jdk.scripting.nashorn/jdk.nashorn.api.scripting.NashornScriptEngine.evalImpl(NashornScriptEngine.java:453)
at jdk.scripting.nashorn/jdk.nashorn.api.scripting.NashornScriptEngine.evalImpl(NashornScriptEngine.java:405)
at jdk.scripting.nashorn/jdk.nashorn.api.scripting.NashornScriptEngine.evalImpl(NashornScriptEngine.java:401)
at jdk.scripting.nashorn/jdk.nashorn.api.scripting.NashornScriptEngine.eval(NashornScriptEngine.java:149)
有人可以帮助我运行此JS并返回值吗?否则可以用Java编写等效代码吗?
解决方法
我想你可以这样:
从JsFunction.js中删除“加载”行
在您的JavaCode中,紧接engine.eval(new FileReader("./resources/JsFunction.js"));
之前的行中插入一行engine.eval(new FileReader("./resources/crypto-js-3.1.9/crypto-js.js"));
我相信可以将crypto-js.js文件的内容放到ScriptEngine的作用域中,随后的JsFunction.js调用应该可以工作。
我用更简单的JS文件作为测试用例做了类似的事情。