自用java字符串工具类

不断封装一些常用的字符串操作加到这个工具类里，不断积累：

package com.netease.lede.qa.util;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;

import org.apache.log4j.Logger;

public class TylanStringUtil {

    public static String getTarget(String aString, String target, int length) {
        // 获取字符串中指定子串后面固定长度的字符串
        int index = aString.indexOf(target);
        int firstIndex = index + target.length();
        String targetString = aString.substring(firstIndex, firstIndex + length);
        return targetString;
    }

    public static String cutLast(String aString, int length) {
        // 截去字符串结尾固定长度
        String targetString = aString.substring(0, aString.length() - length);
        return targetString;
    }

    public static void log(Object object) {
        // 打印字符串
        final Logger runLog = Logger.getLogger("run.log");
        runLog.info(object);
    }

    public static int toInt(String b) {
        // 字符串转成整型
        return Integer.parseInt(b);
    }

    public static Date usFormatToDate(String dateString) throws ParseException {
        // Mon Sep 26 13:00:02 CST 2016 格式字符串转成时间
        SimpleDateFormat usformat = new SimpleDateFormat("EEE MMM dd hh:mm:ss zzz yyyy", Locale.US);
        Date date = usformat.parse(dateString);
        return date;
    }

    public static Date sqlFormatToDate(String dateString) throws ParseException {
        // 2016-09-26 13:00:02 格式字符串转成时间
        SimpleDateFormat sqlFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        Date date = sqlFormat.parse(dateString);
        return date;
    }

}