反射工具类

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import java.lang.reflect.Field;import java.lang.reflect.Method;import org.slf4j.Logger;import org.slf4j.LoggerFactory;/** * 反射工具类 * */public final class ReflectionUtil {    private static final Logger LOGGER = LoggerFactory.getLogger(ReflectionUtil.class);    /**     * 创建实例     */    public static Object newInstance(Class<?> cls) {        Object instance;        try {            instance = cls.newInstance();        } catch (Exception e) {            LOGGER.error("new instance failure", e);            throw new RuntimeException(e);        }        return instance;    }    /**     * 创建实例（根据类名）     */    public static Object newInstance(String className) {        Class<?> cls = ClassUtil.loadClass(className);        return newInstance(cls);    }    /**     * 调用方法     */    public static Object invokeMethod(Object obj, Method method, Object... args) {        Object result;        try {            method.setAccessible(true);            result = method.invoke(obj, args);        } catch (Exception e) {            LOGGER.error("invoke method failure", e);            throw new RuntimeException(e);        }        return result;    }    /**     * 设置成员变量的值     */    public static void setField(Object obj, Field field, Object value) {        try {            field.setAccessible(true);            field.set(obj, value);        } catch (Exception e) {            LOGGER.error("set field failure", e);            throw new RuntimeException(e);        }    }}

public static Object getField(Object obj, Field field) {         Object value = null;       try {             field.setAccessible(true);             value = field.get(obj);         } catch (Exception e) {             LOGGER.error("set field failure", e);             throw new RuntimeException(e);         }         return value;   }     public static Object getField(Object obj, String fieldName) {         Object value = null;       try {            Field[] fields = obj.getClass().getDeclaredFields();          for (int i = 0;i< fields.length;i++ ){             Field field = fields[i];             String fieldNameTmp = field.getName();             if(fieldName.equals(fieldNameTmp)){                return getField(obj, field);             }          }       } catch (Exception e) {             LOGGER.error("get field by field name failure", e);             throw new RuntimeException(e);         }         return value;   }          public static Object getFieldValue(Object obj,Field field,Class<?> clazz){       Object val = null;       try {         PropertyDescriptor pd = new PropertyDescriptor(field.getName(), clazz);         Method rM = pd.getReadMethod();         val = rM.invoke(obj);      } catch (Exception e) {         LOGGER.error("invoke get method failure",e);      }      return val;    }        public static Object getFieldValue(Object obj,String fieldName,Class<?> clazz){       Object val = null;       try {         PropertyDescriptor pd = new PropertyDescriptor(fieldName, clazz);         Method rM = pd.getReadMethod();         val = rM.invoke(obj);      } catch (Exception e) {         LOGGER.error("invoke get method failure",e);      }      return val;    }        public static void setFieldValue(Object obj,String fieldName,Object value){       try {          PropertyDescriptor pd = new PropertyDescriptor(fieldName, obj.getClass());          Method rM = pd.getWriteMethod();          rM.invoke(obj, value);       } catch (Exception e) {          LOGGER.error("invoke get method failure",e);       }

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