动态获取/设置属性值——reflect反射

import java.lang.reflect.Method;
import java.util.Hashtable;
import java.util.regex.Pattern;

/**
 * Description : 反射工具类
 *
 */
public class ReflectHelper {

    private Class cls;
    /**
     * 传过来的对象
     */
    private Object obj;
    private Hashtable<String, Method> getMethods = null;
    private Hashtable<String, Method> setMethods = null;

    public ReflectHelper(Object o) {
        obj = o;
        initMethods();
    }

    public void initMethods() {
        getMethods = new Hashtable<>();
        setMethods = new Hashtable<>();
        cls = obj.getClass();
        Method[] methods = cls.getMethods();
        // 定义正则表达式，从方法中过滤出getter / setter 函数.
        String gs = "get(\\w+)";
        Pattern getm = Pattern.compile(gs);
        String ss = "set(\\w+)";
        Pattern setm = Pattern.compile(ss);
        // 把方法中的"set" 或者 "get" 去掉,$1匹配第一个
        String rapl = "$1";
        String param;
        for (int i = 0; i < methods.length; ++i) {
            Method m = methods[i];
            String methodName = m.getName();
            if (Pattern.matches(gs, methodName)) {
                param = getm.matcher(methodName).replaceAll(rapl).toLowerCase();
                getMethods.put(param, m);
            } else if (Pattern.matches(ss, methodName)) {
                param = setm.matcher(methodName).replaceAll(rapl).toLowerCase();
                setMethods.put(param, m);
            }
        }
    }

    /**
     * 动态选择属性赋值
     * @param property 属性
     * @param object 属性值
     * @return boolean
     */
    public boolean setMethodValue(String property, Object object) {
        Method m = setMethods.get(property.toLowerCase());
        if (m != null) {
            try {

                m.invoke(obj, object);
                return true;
            } catch (Exception ex) {
                ex.printStackTrace();
                return false;
            }
        }
        return false;
    }
    /**
     * 动态获取属性值
     * @param property 属性
     * @return boolean
     */
    public Object getMethodValue(String property) {
        Method m = getMethods.get(property.toLowerCase());
        if (m != null) {
            try {
                Object invoke = m.invoke(obj);
                return invoke;
            } catch (Exception ex) {
                ex.printStackTrace();
                return null;
            }
        }
        return null;
    }

}