package com.hhwy.wdst.common.util;
import java.beans.BeanInfo;
import java.beans.IntrospectionException;
import java.beans.Introspector;
import java.beans.PropertyDescriptor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.*;

/**
 * @title: StringUtil工具类
 * @description: 
 * @throws: 
 */
public class StringUtil {
   public static boolean isNullOrEmpty(Object obj) {  
      return obj == null || "".equals(obj.toString());
   }
   public static String toString(Object obj){
      if(obj == null) return "null";
      return obj.toString();
   }
   public static String ObjtoString(Object obj){
      if(obj == null||"".equals(obj)) return "";
      return obj.toString().trim();
   }
   public static String join(Collection<?> s, String delimiter) {
        StringBuffer buffer = new StringBuffer();
        Iterator<?> iter = s.iterator();
        while (iter.hasNext()) {
            buffer.append(iter.next());
            if (iter.hasNext()) {
                buffer.append(delimiter);
            }
        }
        return buffer.toString();
    }
   
    public static Map toMap(Object bean) {  
           Class<? extends Object> clazz = bean.getClass();  
           Map<Object, Object> returnMap = new HashMap<Object, Object>();  
           BeanInfo beanInfo = null;  
           try {  
               beanInfo = Introspector.getBeanInfo(clazz);  
               PropertyDescriptor[] propertyDescriptors = beanInfo.getPropertyDescriptors();  
               for (int i = 0; i < propertyDescriptors.length; i++) {  
                   PropertyDescriptor descriptor = propertyDescriptors[i];  
                   String propertyName = descriptor.getName();  
                   if (!propertyName.equals("class")) {  
                       Method readMethod = descriptor.getReadMethod();  
                       Object result = null;  
                       result = readMethod.invoke(bean, new Object[0]);  
                       if (null != propertyName) {  
                           propertyName = propertyName.toString();  
                       }  
                       if (null != result) {  
                           result = result.toString();  
                       }  
                       returnMap.put(propertyName, result);  
                   }  
               }  
           } catch (IntrospectionException e) {  
               System.out.println("分析类属性失�?");  
           } catch (IllegalAccessException e) {  
               System.out.println("实例�? JavaBean 失败");  
           } catch (IllegalArgumentException e) {  
               System.out.println("映射错误");  
           } catch (InvocationTargetException e) {  
               System.out.println("调用属�?�的 setter 方法失败");  
           }  
           return returnMap;  
       } 
}