类型转换辅助工具类
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package com.saicfc.saicifx3.util;import java.math.BigDecimal;import java.sql.Date;import java.sql.Time;import java.sql.Timestamp;import java.text.DateFormat;import java.text.NumberFormat;import java.text.ParseException;import java.text.SimpleDateFormat;import java.util.Locale;/** * 类型转换辅助工具类 * * @author ShenHuaJie * @since 2011-11-08 */public class TypeParseUtils { /** * 转换核心实现方法 * * @param value * @param type 目标数据类型 * @param format 输入/输出字符串格式 * @return Object * @throws DataParseException */ public static Object convert(Object value, Class<?> type, String format) throws DataParseException { return convert(value, type.getName(), format); } /** * 转换核心实现方法 * * @param value * @param type 目标数据类型 * @param format 输入/输出字符串格式 * @return Object * @throws DataParseException */ public static Object convert(Object value, String type, String format) throws DataParseException { Locale locale = Locale.getDefault(); String message = "Could not convert %1$s to %2$s"; String support = "Convert from %1$s to %2$s not currently supported"; if (value == null) return null; if (value.getClass().getName().equalsIgnoreCase(type) || value.getClass().getSimpleName().equalsIgnoreCase(type)) return value; if ("Object".equalsIgnoreCase(type) || "java.lang.Object".equals(type)) return value; String fromType = null; if (value instanceof String) { fromType = "String"; String str = (String) value; if ("String".equalsIgnoreCase(type) || "java.lang.String".equalsIgnoreCase(type)) return value; if (str.length() == 0) return null; if ("Boolean".equalsIgnoreCase(type) || "java.lang.Boolean".equals(type)) { if (str.equalsIgnoreCase("TRUE")) return new Boolean(true); else return new Boolean(false); } if ("Double".equalsIgnoreCase(type) || "java.lang.Double".equalsIgnoreCase(type)) try { Number tempNum = getNf(locale).parse(str.replaceAll(",", "")); return new Double(tempNum.doubleValue()); } catch (ParseException e) { throw new DataParseException(String.format(message, str, type), e); } if ("BigDecimal".equalsIgnoreCase(type) || "java.math.BigDecimal".equalsIgnoreCase(type)) try { BigDecimal retBig = new BigDecimal(str.replaceAll(",", "")); int iscale = str.indexOf("."); int keylen = str.length(); if (iscale > -1) { iscale = keylen - (iscale + 1); return retBig.setScale(iscale, 5); } else { return retBig.setScale(0, 5); } } catch (Exception e) { throw new DataParseException(String.format(message, str, type), e); } if ("Float".equalsIgnoreCase(type) || "java.lang.Float".equalsIgnoreCase(type)) try { Number tempNum = getNf(locale).parse(str.replaceAll(",", "")); return new Float(tempNum.floatValue()); } catch (ParseException e) { throw new DataParseException(String.format(message, str, type), e); } if ("Long".equalsIgnoreCase(type) || "java.lang.Long".equalsIgnoreCase(type)) try { NumberFormat nf = getNf(locale); nf.setMaximumFractionDigits(0); Number tempNum = nf.parse(str.replaceAll(",", "")); return new Long(tempNum.longValue()); } catch (ParseException e) { throw new DataParseException(String.format(message, str, type), e); } if ("Integer".equalsIgnoreCase(type) || "java.lang.Integer".equalsIgnoreCase(type)) try { NumberFormat nf = getNf(locale); nf.setMaximumFractionDigits(0); Number tempNum = nf.parse(str.replaceAll(",", "")); return new Integer(tempNum.intValue()); } catch (ParseException e) { throw new DataParseException(String.format(message, str, type), e); } if ("Date".equalsIgnoreCase(type) || "java.util.Date".equalsIgnoreCase(type)) { if (format == null || format.length() == 0) { String separator = String.valueOf(str.charAt(4)); StringBuilder pattern; if (separator.matches("\\d*")) { pattern = new StringBuilder("yyyyMMdd HH:mm:ss"); format = pattern.substring(0, str.length()); } else { pattern = new StringBuilder("yyyy").append(separator).append("MM").append( separator).append("dd HH:mm:ss"); format = pattern.substring(0, str.length()); } } try { SimpleDateFormat sdf = new SimpleDateFormat(format); java.util.Date fieldDate = sdf.parse(str); return new Date(fieldDate.getTime()); } catch (ParseException e) { throw new DataParseException(String.format(message, str, type), e); } } if ("java.sql.Date".equalsIgnoreCase(type)) { if (format == null || format.length() == 0) try { return Date.valueOf(str); } catch (Exception e) { try { DateFormat df = null; if (locale != null) df = DateFormat.getDateInstance(3, locale); else df = DateFormat.getDateInstance(3); java.util.Date fieldDate = df.parse(str); return new Date(fieldDate.getTime()); } catch (ParseException e1) { throw new DataParseException(String.format(message, str, type), e); } } try { SimpleDateFormat sdf = new SimpleDateFormat(format); java.util.Date fieldDate = sdf.parse(str); return new Date(fieldDate.getTime()); } catch (ParseException e) { throw new DataParseException(String.format(message, str, type), e); } } if ("Timestamp".equalsIgnoreCase(type) || "java.sql.Timestamp".equalsIgnoreCase(type)) { if (str.length() == 10) str = str + " 00:00:00"; if (format == null || format.length() == 0) try { return Timestamp.valueOf(str); } catch (Exception e) { try { DateFormat df = null; if (locale != null) df = DateFormat.getDateTimeInstance(3, 3, locale); else df = DateFormat.getDateTimeInstance(3, 3); java.util.Date fieldDate = df.parse(str); return new Timestamp(fieldDate.getTime()); } catch (ParseException e1) { throw new DataParseException(String.format(message, str, type), e); } } try { SimpleDateFormat sdf = new SimpleDateFormat(format); java.util.Date fieldDate = sdf.parse(str); return new Timestamp(fieldDate.getTime()); } catch (ParseException e) { throw new DataParseException(String.format(message, str, type), e); } } else { throw new DataParseException(String.format(support, fromType, type)); } } if (value instanceof BigDecimal) { fromType = "BigDecimal"; BigDecimal bigD = (BigDecimal) value; if ("String".equalsIgnoreCase(type) || "java.lang.String".equalsIgnoreCase(type)) return getNf(locale).format(bigD.doubleValue()); if ("BigDecimal".equalsIgnoreCase(type) || "java.math.BigDecimal".equalsIgnoreCase(type)) return value; if ("Double".equalsIgnoreCase(type) || "java.lang.Double".equalsIgnoreCase(type)) return new Double(bigD.doubleValue()); if ("Float".equalsIgnoreCase(type) || "java.lang.Float".equalsIgnoreCase(type)) return new Float(bigD.floatValue()); if ("Long".equalsIgnoreCase(type) || "java.lang.Long".equalsIgnoreCase(type)) return new Long(Math.round(bigD.doubleValue())); if ("Integer".equals(type) || "java.lang.Integer".equalsIgnoreCase(type)) return new Integer((int) Math.round(bigD.doubleValue())); else throw new DataParseException(String.format(support, fromType, type)); } if (value instanceof Double) { fromType = "Double"; Double dbl = (Double) value; if ("String".equalsIgnoreCase(type) || "java.lang.String".equalsIgnoreCase(type)) return getNf(locale).format(dbl.doubleValue()); if ("Double".equalsIgnoreCase(type) || "java.lang.Double".equalsIgnoreCase(type)) return value; if ("Float".equalsIgnoreCase(type) || "java.lang.Float".equalsIgnoreCase(type)) return new Float(dbl.floatValue()); if ("Long".equalsIgnoreCase(type) || "java.lang.Long".equalsIgnoreCase(type)) return new Long(Math.round(dbl.doubleValue())); if ("Integer".equalsIgnoreCase(type) || "java.lang.Integer".equalsIgnoreCase(type)) return new Integer((int) Math.round(dbl.doubleValue())); if ("BigDecimal".equalsIgnoreCase(type) || "java.math.BigDecimal".equalsIgnoreCase(type)) return new BigDecimal(dbl.toString()); else throw new DataParseException(String.format(support, fromType, type)); } if (value instanceof Float) { fromType = "Float"; Float flt = (Float) value; if ("String".equalsIgnoreCase(type) || "java.lang.String".equalsIgnoreCase(type)) return getNf(locale).format(flt.doubleValue()); if ("BigDecimal".equalsIgnoreCase(type) || "java.math.BigDecimal".equalsIgnoreCase(type)) return new BigDecimal(flt.doubleValue()); if ("Double".equalsIgnoreCase(type) || "java.lang.Double".equalsIgnoreCase(type)) return new Double(flt.doubleValue()); if ("Float".equalsIgnoreCase(type) || "java.lang.Float".equalsIgnoreCase(type)) return value; if ("Long".equalsIgnoreCase(type) || "java.lang.Long".equalsIgnoreCase(type)) return new Long(Math.round(flt.doubleValue())); if ("Integer".equalsIgnoreCase(type) || "java.lang.Integer".equalsIgnoreCase(type)) return new Integer((int) Math.round(flt.doubleValue())); else throw new DataParseException(String.format(support, fromType, type)); } if (value instanceof Long) { fromType = "Long"; Long lng = (Long) value; if ("String".equalsIgnoreCase(type) || "java.lang.String".equalsIgnoreCase(type)) return getNf(locale).format(lng.longValue()); if ("Double".equalsIgnoreCase(type) || "java.lang.Double".equalsIgnoreCase(type)) return new Double(lng.doubleValue()); if ("Float".equalsIgnoreCase(type) || "java.lang.Float".equalsIgnoreCase(type)) return new Float(lng.floatValue()); if ("BigDecimal".equalsIgnoreCase(type) || "java.math.BigDecimal".equalsIgnoreCase(type)) return new BigDecimal(lng.toString()); if ("Long".equalsIgnoreCase(type) || "java.lang.Long".equalsIgnoreCase(type)) return value; if ("Integer".equalsIgnoreCase(type) || "java.lang.Integer".equalsIgnoreCase(type)) return new Integer(lng.intValue()); if ("Date".equalsIgnoreCase(type) || "java.util.Date".equalsIgnoreCase(type)) return new java.util.Date(lng); if ("java.sql.Date".equalsIgnoreCase(type)) return new Date(lng); if ("Time".equalsIgnoreCase(type) || "java.sql.Time".equalsIgnoreCase(type)) return new Time(lng); if ("Timestamp".equalsIgnoreCase(type) || "java.sql.Timestamp".equalsIgnoreCase(type)) return new Timestamp(lng); else throw new DataParseException(String.format(support, fromType, type)); } if (value instanceof Integer) { fromType = "Integer"; Integer intgr = (Integer) value; if ("String".equalsIgnoreCase(type) || "java.lang.String".equalsIgnoreCase(type)) return getNf(locale).format(intgr.longValue()); if ("Double".equalsIgnoreCase(type) || "java.lang.Double".equalsIgnoreCase(type)) return new Double(intgr.doubleValue()); if ("Float".equalsIgnoreCase(type) || "java.lang.Float".equalsIgnoreCase(type)) return new Float(intgr.floatValue()); if ("BigDecimal".equalsIgnoreCase(type) || "java.math.BigDecimal".equalsIgnoreCase(type)) { String str = intgr.toString(); BigDecimal retBig = new BigDecimal(intgr.doubleValue()); int iscale = str.indexOf("."); int keylen = str.length(); if (iscale > -1) { iscale = keylen - (iscale + 1); return retBig.setScale(iscale, 5); } else { return retBig.setScale(0, 5); } } if ("Long".equalsIgnoreCase(type) || "java.lang.Long".equalsIgnoreCase(type)) return new Long(intgr.longValue()); if ("Integer".equalsIgnoreCase(type) || "java.lang.Integer".equalsIgnoreCase(type)) return value; else throw new DataParseException(String.format(support, fromType, type)); } if (value instanceof java.util.Date) { fromType = "Date"; java.util.Date dte = (java.util.Date) value; if ("String".equalsIgnoreCase(type) || "java.lang.String".equalsIgnoreCase(type)) if (format == null || format.length() == 0) { return dte.toString(); } else { SimpleDateFormat sdf = new SimpleDateFormat(format); return sdf.format(dte); } if ("Date".equalsIgnoreCase(type) || "java.util.Date".equalsIgnoreCase(type)) return value; if ("java.sql.Date".equalsIgnoreCase(type)) return new Date(dte.getTime()); if ("Time".equalsIgnoreCase(type) || "java.sql.Time".equalsIgnoreCase(type)) return new Time(dte.getTime()); if ("Timestamp".equalsIgnoreCase(type) || "java.sql.Timestamp".equalsIgnoreCase(type)) return new Timestamp(dte.getTime()); else throw new DataParseException(String.format(support, fromType, type)); } if (value instanceof Date) { fromType = "Date"; Date dte = (Date) value; if ("String".equalsIgnoreCase(type) || "java.lang.String".equalsIgnoreCase(type)) if (format == null || format.length() == 0) { return dte.toString(); } else { SimpleDateFormat sdf = new SimpleDateFormat(format); return sdf.format(new java.util.Date(dte.getTime())); } if ("Date".equalsIgnoreCase(type) || "java.util.Date".equalsIgnoreCase(type)) return new java.util.Date(dte.getTime()); if ("java.sql.Date".equalsIgnoreCase(type)) return value; if ("Time".equalsIgnoreCase(type) || "java.sql.Time".equalsIgnoreCase(type)) throw new DataParseException("Conversion from " + fromType + " to " + type + " not currently supported"); if ("Timestamp".equalsIgnoreCase(type) || "java.sql.Timestamp".equalsIgnoreCase(type)) return new Timestamp(dte.getTime()); else throw new DataParseException(String.format(support, fromType, type)); } if (value instanceof Timestamp) { fromType = "Timestamp"; Timestamp tme = (Timestamp) value; if ("String".equalsIgnoreCase(type) || "java.lang.String".equalsIgnoreCase(type)) if (format == null || format.length() == 0) { return (new SimpleDateFormat("yyyy-MM-dd HH:mm:ss")).format(tme).toString(); } else { SimpleDateFormat sdf = new SimpleDateFormat(format); return sdf.format(new java.util.Date(tme.getTime())); } if ("Date".equalsIgnoreCase(type) || "java.util.Date".equalsIgnoreCase(type)) return new java.util.Date(tme.getTime()); if ("java.sql.Date".equalsIgnoreCase(type)) return new Date(tme.getTime()); if ("Time".equalsIgnoreCase(type) || "java.sql.Time".equalsIgnoreCase(type)) return new Time(tme.getTime()); if ("Timestamp".equalsIgnoreCase(type) || "java.sql.Timestamp".equalsIgnoreCase(type)) return value; else throw new DataParseException(String.format(support, fromType, type)); } if (value instanceof Boolean) { fromType = "Boolean"; Boolean bol = (Boolean) value; if ("Boolean".equalsIgnoreCase(type) || "java.lang.Boolean".equalsIgnoreCase(type)) return bol; if ("String".equalsIgnoreCase(type) || "java.lang.String".equalsIgnoreCase(type)) return bol.toString(); if ("Integer".equalsIgnoreCase(type) || "java.lang.Integer".equalsIgnoreCase(type)) { if (bol.booleanValue()) return new Integer(1); else return new Integer(0); } else { throw new DataParseException(String.format(support, fromType, type)); } } if ("String".equalsIgnoreCase(type) || "java.lang.String".equalsIgnoreCase(type)) return value.toString(); else throw new DataParseException(String.format(support, fromType, type)); } private static NumberFormat getNf(Locale locale) { NumberFormat nf = null; if (locale == null) nf = NumberFormat.getNumberInstance(); else nf = NumberFormat.getNumberInstance(locale); nf.setGroupingUsed(false); return nf; } /** 转换为布尔值 */ public static Boolean convertToBoolean(Object obj) throws DataParseException { return (Boolean) convert(obj, "Boolean", null); } /** 转换为整型 */ public static Integer convertToInteger(Object obj) throws DataParseException { return (Integer) convert(obj, "Integer", null); } /** 转换为字符串 */ public static String convertToString(Object obj) throws DataParseException { return (String) convert(obj, "String", null); } /** 转换为字符串 */ public static String convertToString(Object obj, String defaultValue) throws DataParseException { Object s = convert(obj, "String", null); if (s != null) return (String) s; else return ""; } /** 转换为长整型 */ public static Long convertToLong(Object obj) throws DataParseException { return (Long) convert(obj, "Long", null); } /** 转换为双精度型 */ public static Double convertToDouble(Object obj) throws DataParseException { return (Double) convert(obj, "Double", null); } /** 转换为浮点型 */ public static Double convertToFloat(Object obj) throws DataParseException { return (Double) convert(obj, "Float", null); } /** 转换为数值型 */ public static BigDecimal convertToBigDecimal(Object obj, int scale) throws DataParseException { return ((BigDecimal) convert(obj, "BigDecimal", null)).setScale(scale, 5); } /** 转换为日期型 */ public static java.util.Date convertToDate(Object obj, String format) throws DataParseException { return (java.util.Date) convert(obj, "Date", format); } /** 转换为日期型 */ public static Date convertToSqlDate(Object obj, String format) throws DataParseException { return (Date) convert(obj, "java.sql.Date", format); } /** 转换为日期型 */ public static Timestamp convertToTimestamp(Object obj, String format) throws DataParseException { return (Timestamp) convert(obj, "Timestamp", format); }}class DataParseException extends RuntimeException { /** * */ private static final long serialVersionUID = -2687839831605219566L; public DataParseException() { } public DataParseException(Throwable ex) { super(ex); } public DataParseException(String message) { super(message); } public DataParseException(String message, Throwable ex) { super(message, ex); }} 0 0
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