工作要求，要将存储在原对象中的值部分转存到另一对象，没有利用反射前的代码为：
public NewLCContTable replace(LCContTable mLcContTable){NewLCContTable newlc=new NewLCContTable();newlc.setAgentCode(mLcContTable.getAgentCode());newlc.setAgentCom(mLcContTable.getAgentCom());newlc.setCInValiDate(mLcContTable.getCInValiDate());newlc.setCInValiTime(mLcContTable.getCInValiTime());newlc.setContNo(mLcContTable.getContNo());newlc.setCValiDate(mLcContTable.getCInValiDate());newlc.setCValiTime(mLcContTable.getCInValiTime());newlc.setManageCom(mLcContTable.getManageCom());newlc.setPayIntv(mLcContTable.getPayIntv());newlc.setPayMode(mLcContTable.getPayMode());newlc.setPolApplyDate(mLcContTable.getPolApplyDate());newlc.setPrtNo(mLcContTable.getPrtNo());newlc.setSaleChnl(mLcContTable.getSaleChnl());return newlc;}利用反射节省了set get重复书写：
public class Clone {public static void main(String[] args) {LCContSchema lcContSchema=new LCContSchema();lcContSchema.setPrtNo("00000");lcContSchema.setContNo("123456");LCPolSchema lcPolSchema=new LCPolSchema();lcPolSchema.setOperator("123");clone(lcContSchema, lcPolSchema); System.out.println(lcPolSchema.getPrtNo());System.out.println(lcPolSchema.getContNo());System.out.println(lcPolSchema.getOperator());System.out.println(lcContSchema.getOperator());System.out.println(lcPolSchema);}public static Object clone(Object old,Object news){Object o1=news;Method [] m1=news.getClass().getMethods();for(Method m:m1){String methodname=m.getName();if(methodname.indexOf("set")!=-1){String name=methodname.replaceAll("set", "get");Method m2=null;try {m2=old.getClass().getMethod(name, null);} catch (SecurityException e) { e.printStackTrace();} catch (NoSuchMethodException e) {continue; } System.out.println(m.getName());System.out.println("old:"+m2.getName());try {Object o2= m2.invoke(old, null);System.out.println(o2!=null);if(o2!=null){m.invoke(news, m2.invoke(old, null));}} catch (Exception e) { continue;} }}return o1;}
}05-27
开了下api修改了下代码
/*** * @param a news* @param b old* @return*/public static Object transFields(Object a, Object b){Class c1 = a.getClass();Class c2 = b.getClass();Field[] fieldsDest = c1.getDeclaredFields();Field[] fieldsOrg = c2.getDeclaredFields();AccessibleObject.setAccessible(fieldsDest, true); //取消访问控制检查AccessibleObject.setAccessible(fieldsOrg, true);for (int i = 0; i < fieldsDest.length; i++){Field f = fieldsDest[i];Class type = f.getType();String name = f.getName();String typeName = type.getName();System.out.println("name:"+name);System.out.println("typename:"+typeName);if (name.equals("FIELDNUM") || name.equals("PK") ||name.equals("mErrors") || name.equals("fDate")){continue;} for (int j = 0; j < fieldsOrg.length; j++){//得到数据源的数据Field f1 = fieldsOrg[j];Class type1 = f1.getType();String name1 = f1.getName();String typeName1 = type.getName();System.out.println("name1:"+name);System.out.println("typename1:"+typeName);if (name.equals("FIELDNUM") || name.equals("PK") ||name.equals("mErrors") || name.equals("fDate")){continue;}//赋值转换if ((typeName.equals(typeName1)) && (name1.equals(name))){switch (transType(typeName)){case 3:try{f.setDouble(a, f1.getDouble(b));}catch (Exception e){e.printStackTrace();}break;case 5:try{f.setInt(a, f1.getInt(b));}catch (Exception e){e.printStackTrace();}break;case 93:try{f.set(a, f1.get(b)); }catch (Exception e){e.printStackTrace();}break;default:try{f.set(a, f1.get(b));}catch (Exception e){e.printStackTrace();}}break;}}}return a;}private static int transType(Object type){int typecode;typecode = 93;if (type.equals("java.lang.String")){typecode = 93;}if (type.equals("double")){typecode = 3;}if (type.equals("int")){typecode = 5;}return typecode;}