src/main/java/com/huaheng/common/utils/DataUtils.java

package com.huaheng.common.utils;
import java.lang.reflect.Field;
import java.math.BigDecimal;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Map;
import java.util.Random;
public class DataUtils {
    static SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    /***
     * 转化为Example方法名
     * @param  filedName    字段名
     * @param  methodSuffix 方法后缀
     * @return
     */
    public static String ConvertMethodName(String filedName, String methodSuffix) {
        String returnValue = null;
        if (filedName.length() > 0) {
            char[] nameChar = filedName.toCharArray();
            if (nameChar[0] >= 'a' && nameChar[0] <= 'z') {
                nameChar[0] = (char)(nameChar[0] - 32);
            }
            returnValue = "and" + String.valueOf(nameChar) + methodSuffix;
        }
        return returnValue;
    }
    /**
     * 将对象转为字符串
     * @param  object
     * @return
     */
    public static String getString(Object object) {
        if (object == null) {
            return null;
        } else {
            return object.toString();
        }
    }
    /**
     * 将对象转为Integer
     * @param  object
     * @return
     */
    public static Integer getInteger(Object object) {
        if (object == null) {
            return null;
        } else {
            return Integer.valueOf(object.toString());
        }
    }
    /**
     * 将对象转为BigDecimal
     * @param  object
     * @return
     */
    public static BigDecimal getBigDecimal(Object object) {
        if (object == null) {
            return null;
        } else {
            return new BigDecimal(object.toString());
        }
    }
    /**
     * 将对象转为Double
     * @param  object
     * @return
     */
    public static Double getDouble(Object object) {
        if (object == null) {
            return null;
        } else {
            return new Double(object.toString());
        }
    }
    /**
     * 将long转为Integer
     * @param  object
     * @return
     */
    public static Integer getInteger(long object) {
        return Integer.valueOf(String.valueOf(object));
    }
    /**
     * 将对象转为Date
     * @param  object
     * @return
     */
    public static Date getDateTime(Object object) throws ParseException {
        if (object == null) {
            return null;
        } else {
            return format.parse(object.toString());
        }
    }
    /**
     * 通过一个实体类，给另一个实体类赋值
     * @param  source           源实体类
     * @param  target           目标实体类
     * @param  ignoreProperties 忽略字段(多个字段用逗号隔开)
     * @throws Exception
     */
    public static void CopyDataByNotNull(Object source, Object target, String ignoreProperties) throws Exception {
        Field[] sourceFields = source.getClass().getDeclaredFields();
        Field[] targetFields = target.getClass().getDeclaredFields();
        Field.setAccessible(targetFields, true);
        for (int i = 0; i < sourceFields.length; i++) {
            String sourceName = sourceFields[i].getName();
            Object sourceValue = sourceFields[i].get(source);
            if (sourceValue == null || ignoreProperties.indexOf(sourceName) > -1) {
                continue;
            }
            for (Field targetField : targetFields) {
                if (targetField.getName().equals(sourceName)) {
                    targetField.set(target, sourceValue);
                    break;
                }
            }
        }
    }
    /**
     * 格式化map
     * @param  map
     * @return
     */
    public static String sendGetFormat(Map<String, Object> map) {
        StringBuilder reslut = new StringBuilder();
        for (Map.Entry<String, Object> a : map.entrySet()) {
            reslut.append(a.getKey()).append("=").append(EncodingUtil.encodeURIComponent(String.valueOf(a.getValue())) + "&");
        }
        return String.valueOf(reslut);
    }
    /**
     * 流水码
     * 根据类型生成单号 规则：入库单类型 + 年月日 + 5位(排序号 + 1)
     * @dataType code的前缀
     * @maxCode  code当前表的最后一个值
     * @return
     */
    public String createCode(String dataType, String maxCode) {
        String code = null;
        int i = 1;
        Date now = new Date();
        SimpleDateFormat df = new SimpleDateFormat("yyyyMMdd");
        if (maxCode != null && maxCode.substring(maxCode.length() - 13, maxCode.length() - 5).equals(df.format(now))) {
            Integer Count = Integer.valueOf(maxCode.substring(maxCode.length() - 5, maxCode.length()));
            code = dataType + df.format(now) + String.format("%05d", Count + i++);
        } else {
            code = dataType + df.format(now) + String.format("%05d", 0000 + i++);
        }
        return code;
    }
    /**
     * 流水码
     * 根据类型生成单号 规则：入库单类型 + 年月日 + 5位(排序号 + 1)
     * @dataType code的前缀
     * @maxCode  code当前表的最后一个值
     * @return
     */
    public static String createUniqueId() {
        String code = null;
        Date now = new Date();
        SimpleDateFormat df = new SimpleDateFormat("MMdd");
        Random random = new Random();
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < 6; i++) {
            int number = random.nextInt(10);
            sb.append(number);
        }
        String str = df.format(now) + sb.toString();
        return str;
    }
    public static void main(String[] args) {
        System.out.println(createUniqueId());
    }
}