package com.shlanbao.tzsc.utils.tools;
|
|
import java.lang.reflect.Field;
|
import java.util.ArrayList;
|
import java.util.Date;
|
import java.util.List;
|
|
import com.shlanbao.tzsc.utils.extents.DateFmtAnnotation;
|
import com.shlanbao.tzsc.utils.extents.NumberFmtAnnotation;
|
/**
|
* Bean转换器
|
* <li>@author Leejean
|
* <li>@create 2014-6-24 上午11:48:40
|
* <li>本转换器支持自定义日期转换
|
* <li>使用方法直接在成员变量加自定义注解即可
|
* <li>例如:
|
* <li>@DateFmtAnnotation(fmtPattern="yyyy-MM-dd HH:mm:ss")
|
* <li>private String modifyDatetime;
|
* <li>后期可拓展数字精度
|
* <li>@NumberFmtAnnotation(scale=1)
|
* <li>private Double num;
|
*/
|
public class BeanConvertor {
|
/**
|
* 将source中的同名属性的值复制到desc的同名属性中
|
* @author Leejean
|
* @param source 源
|
* @param target 目标
|
*/
|
public static void copyProperties(Object source, Object target) throws Exception{
|
if(source == null) return;
|
handle(source, target);
|
}
|
/**
|
* 将source中的同名属性赋值到另外一个指定类型的对象中,并返回,
|
* @author Leejean
|
* @create 2014-7-8下午06:45:01
|
* @param <T> 目标类型
|
* @param source 员
|
* @param clazz 目标类.class
|
* @return 目标类型对象
|
* @throws Exception 转换异常
|
*/
|
@SuppressWarnings("unchecked")
|
public static <T> T copyProperties(Object source,Class<T> clazz) throws Exception{
|
if(source == null) return null;
|
Object target=clazz.newInstance();
|
if (HbUtils.isProxy(source)){
|
source = HbUtils.deproxy(source);
|
}
|
return (T) handle(source, target);
|
}
|
/**
|
* 针对集合的操作
|
* @author Leejean
|
* @param srcList 源集合
|
* @param clazz 目标类型
|
* @return 目标集合
|
* @throws Exception 转换异常
|
*/
|
@SuppressWarnings("rawtypes")
|
public static <T> List<T> copyList(List srcList, Class<T> clazz) throws Exception{
|
List<T> descList=null;
|
try{
|
descList = new ArrayList<>();
|
if(srcList == null) return descList;
|
for(Object o : srcList){
|
T t = copyProperties(o, clazz);
|
descList.add(t);
|
}
|
}catch (Exception e){
|
e.printStackTrace();
|
}
|
return descList;
|
}
|
/**
|
* 转换处理
|
* @author Leejean
|
* @create 2014-7-8下午06:44:10
|
* @param source 源
|
* @param target 目标
|
* @return 处理结果
|
* @throws Exception 转换异常
|
*/
|
private static Object handle(Object source,Object target) throws Exception{
|
Field[] sourceFields=source.getClass().getDeclaredFields();
|
Class targetClass=target.getClass();
|
for (Field field : sourceFields) {
|
field.setAccessible(true);
|
Object object=field.get(source);
|
if(object!=null){
|
Field targetFiled=null;
|
try {
|
targetFiled = targetClass.getDeclaredField(field.getName());
|
} catch (Exception e) {
|
continue;
|
}
|
targetFiled.setAccessible(true);
|
if(targetFiled!=null){//属性存在
|
boolean isDateAnnotationPresent=targetFiled.isAnnotationPresent(DateFmtAnnotation.class);
|
if(isDateAnnotationPresent){//被日期注解修饰
|
//得到注解内容
|
String pattern=targetFiled.getAnnotation(DateFmtAnnotation.class).fmtPattern();
|
//获得目标对象属性类型,以便将数据源赋值
|
Class targetFiledType=targetFiled.getType();
|
Class sourceFiledType=field.getType();
|
if(targetFiledType==Date.class&&sourceFiledType==String.class){
|
|
object=DateUtil.formatStringToDate(object.toString(), pattern);
|
targetFiled.set(target,object);
|
|
}else if(targetFiledType==String.class&&sourceFiledType==Date.class){
|
|
object=DateUtil.formatDateToString((Date)object, pattern);
|
targetFiled.set(target,object);
|
}
|
}else{
|
boolean isNumberAnnotationPresent=targetFiled.isAnnotationPresent(NumberFmtAnnotation.class);
|
if(isNumberAnnotationPresent){//被数字格式化注解修饰
|
//得到注解内容
|
int scale=targetFiled.getAnnotation(NumberFmtAnnotation.class).scale();
|
Class targetFiledType=targetFiled.getType();
|
Class sourceFiledType=field.getType();
|
if(targetFiledType==Double.class&&sourceFiledType==Double.class){
|
object=MathUtil.roundHalfUp((Double)object, scale);
|
targetFiled.set(target,object);
|
}else{
|
targetFiled.set(target,object);
|
}
|
}else{
|
//没有被注解的直接赋值
|
targetFiled.set(target,object);
|
}
|
}
|
}
|
|
}
|
}
|
return target;
|
}
|
|
public static void main(String[] args) {
|
|
/*SysUser source=new SysUser(1L, DateUtil.formatStringToDate("2012-01-01 11:11:11"),DateUtil.formatStringToDate("2012-01-01 11:11:11"), "111", "111");
|
UserBean target= new UserBean(2L, "2022-02-21 22:22:22", "2022-02-21 22:22:22", "222", "222");*/
|
/*SysUser source=new SysUser();
|
source.setA(1.2813);
|
UserBean target= new UserBean();
|
target.setA(4.223298798776);
|
List<UserBean> userlist=new ArrayList<UserBean>();
|
userlist.add(target);
|
try {
|
System.out.println(BeanConvertor.copyProperties(target, SysUser.class).toString());
|
for (SysUser sysUser : BeanConvertor.copyList(userlist, SysUser.class)) {
|
//System.out.println(sysUser.toString());
|
}
|
} catch (Exception e) {
|
// TODO Auto-generated catch block
|
e.printStackTrace();
|
}*/
|
/*List<SysUser> users=new ArrayList<SysUser>();
|
users.add(new SysUser(new Date(), new Date(), "yyy", "11"));
|
users.add(new SysUser(new Date(), new Date(), "xxx", "22"));
|
List<UserBean> beanusers=BeanConvertor.copyList(users, UserBean.class);
|
for (UserBean userBean : beanusers) {
|
System.out.println(userBean.toString());
|
}*/
|
|
}
|
|
|
}
|
