package com.java110.common.util;
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import com.java110.common.log.LoggerEngine;
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import org.apache.commons.lang3.math.NumberUtils;
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import org.springframework.util.StringUtils;
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import java.util.Random;
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/**
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* 公用工具类
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* Created by wuxw on 2017/3/10.
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*/
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public class CommonUtil extends LoggerEngine {
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/**
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* 将 30*1000 转为 30000
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* 不能出现小数点等
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* @param val
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* @return
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*/
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public static int multiplicativeStringToInteger(String val){
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try {
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if (StringUtils.isEmpty(val)) {
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return 0;
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}
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if (val.contains("*")) {
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String[] vals = val.split("\\*");
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int value = 1;
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for(int vIndex = 0 ; vIndex < vals.length;vIndex++){
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if(!NumberUtils.isNumber(vals[vIndex])){
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throw new ClassCastException("配置的数据有问题，必须配置为30*1000格式");
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}
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value *= Integer.parseInt(vals[vIndex]);
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}
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return value;
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}
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if(NumberUtils.isNumber(val)){
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return Integer.parseInt(val);
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}
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}catch (Exception e){
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logger.error("---------------[CommonUtil.multiplicativeStringToInteger]----------------类型转换失败",e);
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return 0;
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}
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return 0;
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}
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/**
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* 生成六位验证码
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* @return
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*/
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public static String generateVerificationCode(){
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Random random = new Random();
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String result="";
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for(int i=0;i<6;i++){
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result+=random.nextInt(10);
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}
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return result;
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}
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//效验
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public static boolean sqlValidate(String str) {
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str = str.toLowerCase();//统一转为小写
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String badStr = "'|and|exec|execute|insert|select|delete|update|count|drop|*|%|chr|mid|master|truncate|" +
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"char|declare|sitename|net user|xp_cmdshell|;|or|-|+|,|like'|and|exec|execute|insert|create|drop|" +
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"table|from|grant|use|group_concat|column_name|" +
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"information_schema.columns|table_schema|union|where|select|delete|update|order|by|count|*|" +
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"chr|mid|master|truncate|char|declare|or|;|-|--|+|,|like|//|/|%|#";//过滤掉的sql关键字，可以手动添加
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String[] badStrs = badStr.split("\\|");
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for (int i = 0; i < badStrs.length; i++) {
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if (str.indexOf(badStrs[i]) >= 0) {
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return true;
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}
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}
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return false;
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}
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}
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