java 反射调用Java类的私有set和get方法

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public class Test

          /** * java反射bean的get方法 *  * @param objectClass * @param fieldName * @return */@SuppressWarnings("unchecked")public static Method getGetMethod(Class objectClass, String fieldName) {StringBuffer sb = new StringBuffer();sb.append("get");sb.append(fieldName.substring(0, 1).toUpperCase());sb.append(fieldName.substring(1));try {return objectClass.getMethod(sb.toString());} catch (Exception e) {e.printStackTrace();}return null;}/** * java反射bean的set方法 *  * @param objectClass * @param fieldName * @return */@SuppressWarnings("unchecked")public static Method getSetMethod(Class objectClass, String fieldName) {try {Class[] parameterTypes = new Class[1];Field field = objectClass.getDeclaredField(fieldName);parameterTypes[0] = field.getType();StringBuffer sb = new StringBuffer();sb.append("set");sb.append(fieldName.substring(0, 1).toUpperCase());sb.append(fieldName.substring(1));Method method = objectClass.getMethod(sb.toString(), parameterTypes);return method;} catch (Exception e) {e.printStackTrace();}return null;}/** * 执行set方法 *  * @param o执行对象 * @param fieldName属性 * @param value值 */public static void invokeSet(Object o, String fieldName, Object value) {Method method = getSetMethod(o.getClass(), fieldName);try {method.invoke(o, new Object[] { value });} catch (Exception e) {e.printStackTrace();}}/** * 执行get方法 *  * @param o执行对象 * @param fieldName属性 */public static Object invokeGet(Object o, String fieldName) {Method method = getGetMethod(o.getClass(), fieldName);try {return method.invoke(o, new Object[0]);} catch (Exception e) {e.printStackTrace();}return null;}

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