BeanCopier和BeanUtils实现对象复制,处理date类型
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2022-04-01 21:38:31
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没有废话
先是BeanUtils的实现类型:
import java.lang.reflect.InvocationTargetException; import java.util.Date; import org.apache.commons.beanutils.BeanUtils; import org.apache.commons.beanutils.ConvertUtils; import com.huateng.common.tools.ConvertTools; import com.huateng.common.tools.subTools.form.ProductFormVo; import com.huateng.common.tools.subTools.form.ProductFormVo1; /** * @author Jira * */ public class LocalBeanUtils extends BeanUtils { static { ConvertUtils.register(new DateConvert(), java.util.Date.class); ConvertUtils.register(new DateConvert(), java.sql.Date.class); ConvertUtils.register(new DateConvert(), java.lang.String.class); // ConvertUtils.register(new DateConvert(), java.lang.Long.class); //可以添加新的转换工具 } public static void copyProperties(Object dest, Object orig) { try { BeanUtils.copyProperties(dest, orig); } catch (IllegalAccessException ex) { ex.printStackTrace(); } catch (InvocationTargetException ex) { ex.printStackTrace(); } } public static void main(String...strings) throws Exception{ ProductFormVo pf; Long l=System.currentTimeMillis(); for (int i = 0; i < 100000; i++) { ProductFormVo1 p = new ProductFormVo1(); p.setArticleId("a"); p.setCreateStamp(new Date()); p.setThruDate("2000-11-11 12:00:00"); pf = new ProductFormVo(); LocalBeanUtils.copyProperties(p, pf); } System.out.println(System.currentTimeMillis()-l); } }
它用到的DateConvert
import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Date; import org.apache.commons.beanutils.Converter; public class DateConvert implements Converter { public Object convert(Class arg0, Object arg1) { if (null == arg1) return null; /** 输入String ,输出Date */ if (arg1 instanceof String && arg0 != java.lang.String.class) { String p = (String) arg1; if (p == null || p.trim().length() == 0) { return null; } try { SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); return df.parse(p.trim()); } catch (Exception e) { try { SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd"); return df.parse(p.trim()); } catch (ParseException ex) { return arg1; } } }/** 输入String ,输出String */ else if (arg1 instanceof String && arg0 == java.lang.String.class) { return arg1; }/** 输入Date ,输出String */ else if (arg1 instanceof java.util.Date) { try { SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); return df.format((java.util.Date) arg1); } catch (Exception e) { return null; } }/** 输入Date ,输出String */ else if (arg1 instanceof java.sql.Date) { try { SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); return df.format((java.sql.Date) arg1); } catch (Exception e) { return null; } } return null; } }
下面是BeanCopier:
import java.util.Date; import java.util.HashMap; import java.util.Map; import net.sf.cglib.beans.BeanCopier; import com.huateng.common.tools.subTools.DateConverterBeanCopier; import com.huateng.common.tools.subTools.form.ProductFormVo; import com.huateng.common.tools.subTools.form.ProductFormVo1; /** * @author Jira *vo对象间的赋值操作 *DateConverterBeanCopier 可以添加新的对象转换功能 */ public class BeanCopierUtils { public static Map<String,BeanCopier> beanCopierMap = new HashMap<String,BeanCopier>(); public static void copyProperties(Object source, Object target){ String beanKey = generateKey(source.getClass(), target.getClass()); BeanCopier copier = null; if(!beanCopierMap.containsKey(beanKey)){ copier = BeanCopier.create(source.getClass(), target.getClass(), true); beanCopierMap.put(beanKey, copier); }else{ copier = beanCopierMap.get(beanKey); } copier.copy(source, target, new DateConverterBeanCopier()); } private static String generateKey(Class<?> class1,Class<?>class2){ return class1.toString() + class2.toString(); } public static void main(String...strings){ ProductFormVo pf; Long l=System.currentTimeMillis(); for (int i = 0; i < 100000; i++) { ProductFormVo1 p = new ProductFormVo1(); p.setArticleId("a"); p.setCreateStamp(new Date()); p.setThruDate("2000-11-11 12:00:00"); pf = new ProductFormVo(); BeanCopierUtils.copyProperties(p, pf); } System.out.println(System.currentTimeMillis()-l); // System.out.println(pf.getArticleId()); // System.out.println(pf.getCreateStamp()); // System.out.println(ConvertTools.formatDataStyle3(pf.getThruDate())); } }
它用到的DateConverterBeanCopier:
import java.text.ParseException; import java.text.SimpleDateFormat; /** * @author Jira * */ public class DateConverterBeanCopier implements net.sf.cglib.core.Converter { public Object convert(Object arg1, Class arg0, Object context){ if (arg1 instanceof String && arg0 != java.lang.String.class) { String p = (String) arg1; if (p == null || p.trim().length() == 0) { return null; } try { SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); return df.parse(p.trim()); } catch (Exception e) { try { SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd"); return df.parse(p.trim()); } catch (ParseException ex) { return arg1; } } }/** 输入String ,输出String */ else if (arg1 instanceof String && arg0 == java.lang.String.class) { return arg1; }/** 输入Date ,输出String */ else if (arg1 instanceof java.util.Date) { try { SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); return df.format((java.util.Date) arg1); } catch (Exception e) { return null; } }/** 输入Date ,输出String */ else if (arg1 instanceof java.sql.Date) { try { SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); return df.format((java.sql.Date) arg1); } catch (Exception e) { return null; } } return null; } }
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