項目中用到了java的反射,能夠大大減小代碼量。可是反射的性能卻不容樂觀,作了個簡單的測試,以下。java
public void noreflect() { Person p = new Person(); for(int i=0; i<10000000; ++i){ Person.setName(p, "name"); Person.setAge(p, "22"); } } @Test public void reflect(){ Person p = new Person(); try { for(int i=0; i<10000000; ++i){ Method setname = Person.class.getDeclaredMethod("setName", Person.class, String.class); Method setage = Person.class.getDeclaredMethod("setAge", Person.class, String.class); setname.invoke(null, p, "name"); setage.invoke(null, p, "22"); } } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } }