J2V8的(必需)中出错

Question

在我的java应用程序中，我正在尝试使用Ripple-lib来获得客户端的平衡。

为了调用Ripple javascript API，我使用j2v8如下：

    V8 runtime = V8.createV8Runtime();
    runtime.executeVoidScript(""
            + "const RippleAPI = require('ripple-lib').RippleAPI;\n"
            + "const api = new RippleAPI({\n"
            + "    server: 'wss://s.altnet.rippletest.net:51233'\n"
            + "});\n"
            + "var client = {\n"
            + "    getBalance: function (address) {\n"
            + "        api.connect().then(() => {\n"
            + "            api.getBalances(address).then(balances => {\n"
            + "                return JSON.stringify(balances, null, 2);\n"
            + "            });\n"
            + "        })\n"
            + "    }\n"
            + "};");
    V8Object client = runtime.getObject("client");
    V8Array parameters = new V8Array(runtime);
    parameters.push("rHY6yUsQaEigs867XUgaMp89Hhm2eJs5jQ");
    String result = client.executeStringFunction("getBalance", parameters);
    System.out.println(result);
    parameters.release();
    runtime.release();

但有一个例外：

Exception in thread "main" undefined:1: ReferenceError: require is not defined
const RippleAPI = require('ripple-lib').RippleAPI;
                  ^
ReferenceError: require is not defined
    at <anonymous>:1:19
com.eclipsesource.v8.V8ScriptExecutionException

有谁能帮帮我吗？

Answer 1

如果您运行的是j2v8，引擎只知道pre，甚至不知道窗口变量，因为窗口、文档和Dom操作api是由浏览器提供的，而不仅仅是引擎。Require不是js函数。它不会被v8引擎识别