Question

我有使用其他JavaScript源代码的JavaScript代码：

<body>
  <script src="node_modules/node-vibrant/dist/vibrant.js"></script>

  <script type="text/javascript">
    function test(src) {
      Vibrant.from(src).getPalette(function(err, swatches) {
        if (err) throw err;
        for (var key in swatches) {
          if (key === "Vibrant") {
            var swatch = swatches[key];
            if (swatch) {
              console.log("hex: " + swatch.getHex());
              return (swatch.getHex());
            }
          }
        }
      });
    }

    test("Apples.jpg");
  </script>
</body>

我想用Java调用这段代码。怎么做？

我试图使用ScriptManager，但收到的错误是：

窗口未定义

Answer 1

这应该适合你。

 ScriptEngineManager manager = new ScriptEngineManager();
            ScriptEngine engine = manager.getEngineByName("JavaScript");

            // JavaScript code in a String
            String script = " function test(src) {   Vibrant.from(src).getPalette(function(err, swatches) {        if (err) throw err;          for (var key in swatches) {    if(key==='Vibrant'){          var swatch = swatches[key];          if (swatch) {        console.log('hex: ' + swatch.getHex());            return(swatch.getHex());              }}        }      });    }";
            // evaluate script
            engine.eval(script);


            Invocable inv = (Invocable) engine;

            // invoke the global function named "hello"
            inv.invokeFunction("test", "Apples.jpg" );

试图从java调用javascript代码

1 个答案: