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src/main/java/com/nis/util/BeanHelper.java

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+package com.nis.util;
+
+import java.beans.BeanInfo;
+import java.beans.IntrospectionException;
+import java.beans.Introspector;
+import java.beans.PropertyDescriptor;
+import java.lang.reflect.Field;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.Collection;
+import java.util.LinkedHashMap;
+import java.util.Map;
+/**
+ * 
+ * <p>Title:BeanHelper</p>
+ * <p>Description:去除Bean中String类型字段的前后空格</p>
+ * 
+ * @author:RKG
+ * @Date:2016-4-29
+ */
+public class BeanHelper {
+
+	/**
+	 * 去掉bean中所有属性为字符串的前后空格
+	 * 
+	 * @param bean
+	 * @throws Exception
+	 */
+	public static void beanAttributeValueTrim(Object bean) throws Exception {
+		if (bean != null) {
+			// 获取所有的字段包括public,private,protected,private
+			Field[] fields = bean.getClass().getDeclaredFields();
+			for (int i = 0; i < fields.length; i++) {
+				Field f = fields[i];
+				if (f.getType().getName().equals("java.lang.String")) {
+					String key = f.getName();// 获取字段名
+					Object value = getFieldValue(bean, key);
+
+					if (value == null)
+						continue;
+					setFieldValue(bean, key, value.toString().trim());
+				}
+			}
+		}
+	}
+
+	/**
+	 * 利用反射通过get方法获取bean中字段fieldName的值
+	 * 
+	 * @param bean
+	 * @param fieldName
+	 * @return
+	 * @throws Exception
+	 */
+	private static Object getFieldValue(Object bean, String fieldName)
+			throws Exception {
+		StringBuffer result = new StringBuffer();
+		String methodName = result.append("get")
+				.append(fieldName.substring(0, 1).toUpperCase())
+				.append(fieldName.substring(1)).toString();
+
+		Object rObject = null;
+		Method method = null;
+
+		@SuppressWarnings("rawtypes")
+		Class[] classArr = new Class[0];
+		method = bean.getClass().getMethod(methodName, classArr);
+		rObject = method.invoke(bean, new Object[0]);
+
+		return rObject;
+	}
+
+	/**
+	 * 利用发射调用bean.set方法将value设置到字段
+	 * 
+	 * @param bean
+	 * @param fieldName
+	 * @param value
+	 * @throws Exception
+	 */
+	private static void setFieldValue(Object bean, String fieldName,
+			Object value) throws Exception {
+		StringBuffer result = new StringBuffer();
+		String methodName = result.append("set")
+				.append(fieldName.substring(0, 1).toUpperCase())
+				.append(fieldName.substring(1)).toString();
+
+		/**
+		 * 利用发射调用bean.set方法将value设置到字段
+		 */
+		Class[] classArr = new Class[1];
+		classArr[0] = "java.lang.String".getClass();
+		Method method = bean.getClass().getMethod(methodName, classArr);
+		method.invoke(bean, value);
+	}
+	/**
+	 * 
+	 * transportBean2Map(将Java bean转换为Map)
+	 * (这里描述这个方法适用条件 – 可选)
+	 * @param clazz
+	 * @param obj
+	 * @return
+	 * @throws IntrospectionException 
+	 *Map<String,String>
+	 * @throws InvocationTargetException 
+	 * @throws IllegalArgumentException 
+	 * @throws IllegalAccessException 
+	 * @exception 
+	 * @since  1.0.0
+	 */
+	public static Map<String,String> transportBean2Map(Class clazz,Object obj) throws IntrospectionException, IllegalAccessException, IllegalArgumentException, InvocationTargetException{
+		Map<String,String> bean=new LinkedHashMap<>();
+		BeanInfo beanInfo=Introspector.getBeanInfo(clazz);
+		PropertyDescriptor[] propertyDescriptors=beanInfo.getPropertyDescriptors();
+		for(PropertyDescriptor propertyDescriptor:propertyDescriptors){
+			String key =propertyDescriptor.getName();
+			if(!key.equals("class")){
+				String _value=null;
+				Method getter=propertyDescriptor.getReadMethod();
+				Object value =getter.invoke(obj);
+				if(value==null) continue;
+				else if(value instanceof java.util.Date)//时间类型转换成long
+				   _value=String.valueOf(((java.util.Date)value).getTime());
+				else if(value instanceof Boolean||value instanceof Integer||value instanceof Long){
+					_value=String.valueOf(value);
+				}else if(value instanceof String){
+					_value=(String)value;
+				}else if(value instanceof Collection){
+					throw new RuntimeException("不支持对象中嵌套的对象集合");
+				}else{
+					
+				}
+				if(_value!=null)
+					bean.put(key, _value);
+			}
+			
+		}
+		return bean;
+	}
+	public static void main(String[] args) {
+//		SrcIp ip=new SrcIp();
+//		ip.setAreaId(1l);
+//		 try {
+//			Map<String,String> transportBean2Map=transportBean2Map(SrcIp.class,ip);
+//			System.out.println(transportBean2Map.size());
+//			for(Entry<String, String> e:transportBean2Map.entrySet()){
+//				System.out.println(e.getKey()+" "+e.getValue());
+//			}
+//		} catch (IntrospectionException | IllegalAccessException | IllegalArgumentException | InvocationTargetException e) {
+//			// TODO Auto-generated catch block
+//			e.printStackTrace();
+//		}
+	}
+}