JAVA把字符串当作表达式运行

直接可以穿一个字符串运行

private static void test(String pm1) {

ScriptEngineManager manager = new ScriptEngineManager();

ScriptEngine engine = manager.getEngineByName("js");

Object result;

try {

result = engine.eval(pm1);

System.out.println("a + b = " + result);

} catch (ScriptException e) {

e.printStackTrace();

}

}

改编于：http://blog.csdn.net/sdyy321/article/details/6959199