代码片段:反射获取Java对象中所有的属性名称和属性值
@Slf4j public class Test3 { public static void main(String[] args) throws InvocationTargetException, IllegalAccessException { Hello hello = new Hello(); Map<String, Object> map = new HashMap<>(); Class<? extends Hello> c = hello.getClass(); Method[] methods = c.getMethods(); for (Method method : methods) { // System.out.println(method); String name = method.getName(); if (name.startsWith("get")) { map.put(name, method.invoke(hello)); } } log.info(JSON.toJSONString(map.toString())); /*Map<String, Object> map = new HashMap<>(); String[] fieldNames = getFiledName(hello); //获取属性的名字 for (String name : fieldNames) { //遍历所有属性 Object value = getFieldValueByName(name, hello); map.put(name, value); }*/ } /* 根据属性名获取属性值 * */ private static Object getFieldValueByName(String fieldName, Object o) { try { String firstLetter = fieldName.substring(0, 1).toUpperCase(); String getter = "get" + firstLetter + fieldName.substring(1); Method method = o.getClass().getMethod(getter); return method.invoke(o); } catch (Exception e) { return null; } } /** * 获取属性名数组 */ private static String[] getFiledName(Object o) { Field[] fields = o.getClass().getDeclaredFields(); String[] fieldNames = new String[fields.length]; for (int i = 0; i < fields.length; i++) { // System.out.println(fields[i].getType()); fieldNames[i] = fields[i].getName(); } return fieldNames; } }