sax，script包在android中的效率

调试模式下的SAX和script

效率巨慢，而运行模式下，好很多，大概快5-10倍。

另外script包会编译一个print方法，这个过程耗时很多，严重影响效率

去掉并做些优化后

500条脚本，执行从1s缩减到200ms

代码精简如下：

RhinoScriptEngine.java

    Scriptable getRuntimeScope(ScriptContext ctxt) {

        if (ctxt == null) {

            throw new NullPointerException("null script context");

        }

        // we create a scope for the given ScriptContext

        Scriptable newScope = new ExternalScriptable(ctxt, indexedProps);

        // Set the prototype of newScope to be 'topLevel' so that

        // JavaScript standard objects are visible from the scope.

        newScope.setPrototype(topLevel);

        // define "context" variable in the new scope

        newScope.put("context", newScope, ctxt);

        // define "print", "println" functions in the new scope

        //去掉下面几行

//        Context cx = enterContext();

//        try {

//            cx.evaluateString(newScope, printSource, "print", 1, null);

//        } finally {

//            cx.exit();

//        }

        return newScope;

    }