反射获取类中的属性和set属性

package framework.base;

import java.beans.IntrospectionException;
import java.beans.PropertyDescriptor;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Locale;
import java.util.Map;
import java.util.Map.Entry;

/*
 * 通过Java反射机制，动态给对象属性赋值，并获取属性值
 */
public class ClassRefUtil {

    /**
     * @param args
     */
    public static void main(String[] args) {
        /*Map<String, String> valMap = new HashMap<String, String>();
        valMap.put("userName", "michael");
        valMap.put("age", "27");
        valMap.put("height", "173.5");
        valMap.put("date", "2010-10-24");
        valMap.put("times", "1287932898276");
        valMap.put("flag", "false"); 

        ChildInfo rl = new ChildInfo();
        System.out.println("通过反射赋值.");
        PublicUtil.setFieldValue(rl, valMap); 

        System.out.println("通过反射取值:");
        int i = 0;
        Map<String, String> fieldValMap = PublicUtil.getFieldValueMap(rl);
        for (Entry<String, String> entry : fieldValMap.entrySet()) {
            i++;
            System.out.println("[字段 "+i+"] ["+entry.getKey()+"]   ---   [" + entry.getValue()+"]");
        } */
    }

    /**
     * 取Bean的属性和值对应关系的MAP
     * @param bean
     * @return Map
     */
    public static Map<String, String> getFieldValueMap(Object bean) {
        Class<?> cls = bean.getClass();
        Map<String, String> valueMap = new HashMap<String, String>();
        // 取出bean里的所有方法
        Method[] methods = cls.getDeclaredMethods();
        Field[] fields = cls.getDeclaredFields(); 

        for (Field field : fields) {
            try {
                String fieldType = field.getType().getSimpleName();
                String fieldGetName = parGetName(field.getName());
                if (!checkGetMet(methods, fieldGetName)) {
                    continue;
                }
                Method fieldGetMet = cls.getMethod(fieldGetName, new Class[] {});
                Object fieldVal = fieldGetMet.invoke(bean, new Object[] {});
                String result = null;
                if ("Date".equals(fieldType)) {
                    result = fmtDate((Date) fieldVal);
                } else {
                    if (null != fieldVal) {
                        result = String.valueOf(fieldVal);
                    }
                }
                valueMap.put(field.getName(), result);
            } catch (Exception e) {
                continue;
            }
        }
        return valueMap; 

    } 

    /**
     * set属性的值到Bean
     * @param bean
     * @param valMap
     */
    public static void setFieldValue(Object bean, Map<String, String> valMap) {
        Class<?> cls = bean.getClass();
        // 取出bean里的所有方法
        Method[] methods = cls.getDeclaredMethods();
        Field[] fields = cls.getDeclaredFields(); 

        for (Field field : fields) {
            try {
                String fieldSetName = parSetName(field.getName());
                if (!checkSetMet(methods, fieldSetName)) {
                    continue;
                }
                Method fieldSetMet = cls.getMethod(fieldSetName, field.getType());
                String value = valMap.get(field.getName());
                if (null != value && !"".equals(value)) {
                    String fieldType = field.getType().getSimpleName();
                    if ("String".equals(fieldType)) {
                        fieldSetMet.invoke(bean, value);
                    } else if ("Date".equals(fieldType)) {
                        Date temp = parseDate(value);
                        fieldSetMet.invoke(bean, temp);
                    } else if ("Integer".equals(fieldType) || "int".equals(fieldType)) {
                        Integer intval = Integer.parseInt(value);
                        fieldSetMet.invoke(bean, intval);
                    } else if ("Long".equalsIgnoreCase(fieldType)) {
                        Long temp = Long.parseLong(value);
                        fieldSetMet.invoke(bean, temp);
                    } else if ("Double".equalsIgnoreCase(fieldType)) {
                        Double temp = Double.parseDouble(value);
                        fieldSetMet.invoke(bean, temp);
                    } else if ("Boolean".equalsIgnoreCase(fieldType)) {
                        Boolean temp = Boolean.parseBoolean(value);
                        fieldSetMet.invoke(bean, temp);
                    } else {
                        System.out.println("not supper type" + fieldType);
                    }
                }
            } catch (Exception e) {
                continue;
            }
        } 

    } 

    /**
     * set属性的值到Bean
     * @param bean
     * @param valMap
     */
    public static void setFieldObj(Object bean,Object backBean) {
        try {
        Class<?> backCls = backBean.getClass();

        Field[] backFields = backCls.getDeclaredFields(); 

        Map<String, String> backValue = new HashMap<String, String>();

        for (Field field : backFields) { 

             String fieldSetName = (field.getName()); 

             String fieldType = field.getType().getSimpleName(); 

             PropertyDescriptor pd = new PropertyDescriptor(fieldSetName, backCls);

             Method getMethod = pd.getReadMethod();//获得读方法

             if(fieldSetName.equals("platAppend")){

                 fieldSetName = "platAdd";
             }

             if(fieldSetName.equals("adtVdrBillingFee")){

                 fieldSetName = "adtBillingFee";

             }else if(fieldSetName.indexOf("chdVdrBillingFee")>-1){

                 fieldSetName = "chdBillingFee";

             }else if(fieldSetName.indexOf("infVdrBillingFee")>-1){

                 fieldSetName = "infBillingFee";

             }

             if(fieldSetName.indexOf("inf")==0){

                 fieldSetName =  fieldSetName.replace("inf", "baby");
             }

             backValue.put(fieldSetName,getMethod.invoke(backBean)==null?"":getMethod.invoke(backBean).toString());

        }

        Class<?> cls = bean.getClass();
        // 取出bean里的所有方法
        Method[] methods = cls.getDeclaredMethods();
        Field[] fields = cls.getDeclaredFields(); 

        for (Field field : fields) {
            try {
                String fieldSetName = parSetName(field.getName());
                if (!checkSetMet(methods, fieldSetName)) {
                    continue;
                }
                Method fieldSetMet = cls.getMethod(fieldSetName, field.getType());
                String value = backValue.get(field.getName());
                if (null != value && !"".equals(value)) {
                    String fieldType = field.getType().getSimpleName();
                    if ("String".equals(fieldType)) {
                        fieldSetMet.invoke(bean, value);
                    } else if ("Date".equals(fieldType)) {
                        Date temp = parseDate(value);
                        fieldSetMet.invoke(bean, temp);
                    } else if ("Integer".equals(fieldType) || "int".equals(fieldType)) {
                        Integer intval = Integer.parseInt(value);
                        fieldSetMet.invoke(bean, intval);
                    } else if ("Long".equalsIgnoreCase(fieldType)) {
                        Long temp = Long.parseLong(value);
                        fieldSetMet.invoke(bean, temp);
                    } else if ("Double".equalsIgnoreCase(fieldType)) {
                        Double temp = Double.parseDouble(value);
                        fieldSetMet.invoke(bean, temp);
                    } else if ("Boolean".equalsIgnoreCase(fieldType)) {
                        Boolean temp = Boolean.parseBoolean(value);
                        fieldSetMet.invoke(bean, temp);
                    } else {
                        System.out.println("not supper type" + fieldType);
                    }
                }
            } catch (Exception e) {
                continue;
            }
        }

        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }

    /**
     * 格式化string为Date
     * @param datestr
     * @return date
     */
    private static Date parseDate(String datestr) {
        if (null == datestr || "".equals(datestr)) {
            return null;
        }
        try {
            String fmtstr = null;
            if (datestr.indexOf(':') > 0) {
                fmtstr = "yyyy-MM-dd HH:mm:ss";
            } else {
                fmtstr = "yyyy-MM-dd";
            }
            SimpleDateFormat sdf = new SimpleDateFormat(fmtstr, Locale.UK);
            return sdf.parse(datestr);
        } catch (Exception e) {
            return null;
        }
    }
    /**
     * 日期转化为String
     * @param date
     * @return date string
     */
    private static String fmtDate(Date date) {
        if (null == date) {
            return null;
        }
        try {
            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.US);
            return sdf.format(date);
        } catch (Exception e) {
            return null;
        }
    } 

    /**
     * 判断是否存在某属性的 set方法
     * @param methods
     * @param fieldSetMet
     * @return boolean
     */
    private static boolean checkSetMet(Method[] methods, String fieldSetMet) {
        for (Method met : methods) {
            if (fieldSetMet.equals(met.getName())) {
                return true;
            }
        }
        return false;
    }
    /**
     * 判断是否存在某属性的 get方法
     * @param methods
     * @param fieldGetMet
     * @return boolean
     */
    private static boolean checkGetMet(Method[] methods, String fieldGetMet) {
        for (Method met : methods) {
            if (fieldGetMet.equals(met.getName())) {
                return true;
            }
        }
        return false;
    } 

    /**
     * 拼接某属性的 get方法
     * @param fieldName
     * @return String
     */
    private static String parGetName(String fieldName) {
        if (null == fieldName || "".equals(fieldName)) {
            return null;
        }
        return "get" + fieldName.substring(0, 1).toUpperCase()
                + fieldName.substring(1);
    }
    /**
     * 拼接在某属性的 set方法
     * @param fieldName
     * @return String
     */
    private static String parSetName(String fieldName) {
        if (null == fieldName || "".equals(fieldName)) {
            return null;
        }
        return "set" + fieldName.substring(0, 1).toUpperCase()
                + fieldName.substring(1);
    }

}