Java常用代码片段

package com.citic.gatz.utils.util;

import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

import com.citic.gatz.utils.Stringutil;

/**
 * 关于Moder工具类
 * 
 * @author fengchao
 *
 */
public class ModerUtils {
	public static String getToString(Object obj) {
		String result = "";
		Field[] fields = obj.getClass().getDeclaredFields();
		StringBuffer strBuf = new StringBuffer();
		strBuf.append(obj.getClass().getName());
		strBuf.append("(");
		for (int i = 0; i < fields.length; i++) {
			Field fd = fields[i];
			try {
				Method method = obj.getClass().getMethod("get" + toUpperCaseFirstOne(fd.getName()));
				if(method.invoke(obj) != null) {
					strBuf.append(fd.getName() + ":");
					strBuf.append(method.invoke(obj) + ",");
				}
			} catch (NoSuchMethodException e) {
				//TODO
			} catch (SecurityException e) {
				e.printStackTrace();
			} catch (IllegalAccessException e) {
				e.printStackTrace();
			} catch (IllegalArgumentException e) {
				e.printStackTrace();
			} catch (InvocationTargetException e) {
				e.printStackTrace();
			}
			
		}	
		try {
			result = removeSuffix(strBuf.toString(), ",");
		} catch (Exception e) {
			e.printStackTrace();
		}
		return result + ")";
	}
	
	//*******************************以下方法是StringUtils中的方法**************************************
	/**
	 * 删除字符串后面指定的后缀
	 * @param str
	 * @param suffix
	 * @return
	 * @throws Exception
	 */
	public static String removeSuffix(String str, String suffix)
			throws Exception {
		if (null == str)
			return null;
		if ("".equals(str.trim()))
			return "";

		if (null == suffix || "".equals(suffix))
			return str;

		if (str.endsWith(suffix)) {
			return str.substring(0, str.length() - suffix.length());
		}

		throw new Exception(str + " 没有按指定字符串" + suffix + "结尾");
	}
	
	/**
	 * 字符串首字母转为大写
	 * @param s
	 * @return
	 */
	public static String toUpperCaseFirstOne(String s) {
		if (Character.isUpperCase(s.charAt(0)))
			return s;
		else
			return (new StringBuilder()).append(Character.toUpperCase(s.charAt(0))).append(s.substring(1)).toString();
	}
}