cn.opencodes.utils.BeanUtils Maven / Gradle / Ivy
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package cn.opencodes.utils;
import java.beans.PropertyDescriptor;
import java.lang.reflect.InvocationTargetException;
import java.util.Iterator;
import java.util.Map;
import org.apache.commons.beanutils.DynaBean;
import org.apache.commons.beanutils.DynaProperty;
import org.apache.commons.beanutils.PropertyUtils;
import org.apache.commons.beanutils.PropertyUtilsBean;
import cn.opencodes.exception.RRException;
/**
* @author HJ
*/
@SuppressWarnings({"rawtypes","unchecked"})
public class BeanUtils extends PropertyUtilsBean {
/**
* 把orig和dest相同属性的value复制到dest中
* @param dest
* @param orig
* @throws IllegalAccessException
* @throws InvocationTargetException
*/
public static void copyBean2Bean(Object dest, Object orig) {
try {
convert(dest, orig);
} catch (Exception e) {
throw new RRException(e.toString(), -1);
}
}
private static void convert(Object dest, Object orig) throws IllegalAccessException, InvocationTargetException {
// Validate existence of the specified beans
if (dest == null) {
throw new IllegalArgumentException("No destination bean specified");
}
if (orig == null) {
throw new IllegalArgumentException("No origin bean specified");
}
// Copy the properties, converting as necessary
if (orig instanceof DynaBean) {
DynaProperty origDescriptors[] = ((DynaBean) orig).getDynaClass().getDynaProperties();
for (int i = 0; i < origDescriptors.length; i++) {
String name = origDescriptors[i].getName();
if (PropertyUtils.isWriteable(dest, name)) {
Object value = ((DynaBean) orig).get(name);
try {
getInstance().setSimpleProperty(dest, name, value);
} catch (Exception e) {
; // Should not happen
}
}
}
} else if (orig instanceof Map) {
Iterator names = ((Map) orig).keySet().iterator();
while (names.hasNext()) {
String name = (String) names.next();
if (PropertyUtils.isWriteable(dest, name)) {
Object value = ((Map) orig).get(name);
try {
getInstance().setSimpleProperty(dest, name, value);
} catch (Exception e) {
; // Should not happen
}
}
}
} else
/* if (orig is a standard JavaBean) */
{
PropertyDescriptor origDescriptors[] = PropertyUtils.getPropertyDescriptors(orig);
for (int i = 0; i < origDescriptors.length; i++) {
String name = origDescriptors[i].getName();
// String type =
// origDescriptors[i].getPropertyType().toString();
if ("class".equals(name)) {
continue; // No point in trying to set an object's class
}
if (PropertyUtils.isReadable(orig, name) && PropertyUtils.isWriteable(dest, name)) {
try {
Object value = PropertyUtils.getSimpleProperty(orig, name);
getInstance().setSimpleProperty(dest, name, value);
} catch (java.lang.IllegalArgumentException ie) {
; // Should not happen
} catch (Exception e) {
; // Should not happen
}
}
}
}
}
/**
* 对象拷贝 数据对象空值不拷贝到目标对象
*
* @param dataObject
* @param toObject
* @throws NoSuchMethodException
* copy
*/
public static void copyBeanNotNull2Bean(Object databean, Object tobean) {
try {
copyBeanNotNull2Bean1(databean, tobean);
} catch (Exception e) {
throw new RRException(e.toString(), -1);
}
}
private static void copyBeanNotNull2Bean1(Object databean, Object tobean) throws Exception {
PropertyDescriptor origDescriptors[] = PropertyUtils.getPropertyDescriptors(databean);
for (int i = 0; i < origDescriptors.length; i++) {
String name = origDescriptors[i].getName();
// String type = origDescriptors[i].getPropertyType().toString();
if ("class".equals(name)) {
continue; // No point in trying to set an object's class
}
if (PropertyUtils.isReadable(databean, name) && PropertyUtils.isWriteable(tobean, name)) {
try {
Object value = PropertyUtils.getSimpleProperty(databean, name);
if (value != null) {
getInstance().setSimpleProperty(tobean, name, value);
}
} catch (java.lang.IllegalArgumentException ie) {
; // Should not happen
} catch (Exception e) {
; // Should not happen
}
}
}
}
/**
* 将Bean属性与Map中相同的内容复制到Map内的key中
*
* @param bean
* Object
* @param properties
* Map
* @throws IllegalAccessException
* @throws InvocationTargetException
*/
public static void copyBean2Map(Map map, Object bean) {
PropertyDescriptor[] pds = PropertyUtils.getPropertyDescriptors(bean);
for (int i = 0; i < pds.length; i++) {
PropertyDescriptor pd = pds[i];
String propname = pd.getName();
try {
Object propvalue = PropertyUtils.getSimpleProperty(bean, propname);
map.put(propname, propvalue);
} catch (Exception e) {
throw new RRException(e.toString(), -1);
}
}
}
/**
* 将Map内的key与Bean中属性相同的内容复制到BEAN中
*
* @param bean
* Object
* @param properties
* Map
* @throws IllegalAccessException
* @throws InvocationTargetException
*/
public static void copyMap2Bean(Object bean, Map properties){
try {
copyMap2Bean1(bean, properties);
} catch (Exception e) {
throw new RRException(e.toString(), -1);
}
}
private static void copyMap2Bean1(Object bean, Map properties)
throws IllegalAccessException, InvocationTargetException {
// Do nothing unless both arguments have been specified
if ((bean == null) || (properties == null)) {
return;
}
// Loop through the property name/value pairs to be set
Iterator names = properties.keySet().iterator();
while (names.hasNext()) {
String name = (String) names.next();
// Identify the property name and value(s) to be assigned
if (name == null) {
continue;
}
Object value = properties.get(name);
try {
Class clazz = PropertyUtils.getPropertyType(bean, name);
if (null == clazz) {
continue;
}
String className = clazz.getName();
if (className.equalsIgnoreCase("java.sql.Timestamp")) {
if (value == null || value.equals("")) {
continue;
}
}
getInstance().setSimpleProperty(bean, name, value);
} catch (NoSuchMethodException e) {
continue;
}
}
}
/**
* 自动转Map key值大写 将Map内的key与Bean中属性相同的内容复制到BEAN中
*
* @param bean
* Object
* @param properties
* Map
* @throws IllegalAccessException
* @throws InvocationTargetException
*/
public static void copyMap2Bean_Nobig(Object bean, Map properties){
try {
copyMap2Bean_Nobig1(bean, properties);
} catch (Exception e) {
throw new RRException(e.toString(), -1);
}
}
private static void copyMap2Bean_Nobig1(Object bean, Map properties)
throws IllegalAccessException, InvocationTargetException {
// Do nothing unless both arguments have been specified
if ((bean == null) || (properties == null)) {
return;
}
// Loop through the property name/value pairs to be set
Iterator names = properties.keySet().iterator();
while (names.hasNext()) {
String name = (String) names.next();
// Identify the property name and value(s) to be assigned
if (name == null) {
continue;
}
Object value = properties.get(name);
// 命名应该大小写应该敏感(否则取不到对象的属性)
// name = name.toLowerCase();
try {
if (value == null) { // 不光Date类型，好多类型在null时会出错
continue; // 如果为null不用设 (对象如果有特殊初始值也可以保留？)
}
Class clazz = PropertyUtils.getPropertyType(bean, name);
if (null == clazz) { // 在bean中这个属性不存在
continue;
}
String className = clazz.getName();
// 临时对策（如果不处理默认的类型转换时会出错）
if (className.equalsIgnoreCase("java.util.Date")) {
value = new java.util.Date(((java.sql.Timestamp) value).getTime());// wait
// to
// do：貌似有时区问题,
// 待进一步确认
}
// if (className.equalsIgnoreCase("java.sql.Timestamp")) {
// if (value == null || value.equals("")) {
// continue;
// }
// }
getInstance().setSimpleProperty(bean, name, value);
} catch (NoSuchMethodException e) {
continue;
}
}
}
/**
* Map内的key与Bean中属性相同的内容复制到BEAN中 对于存在空值的取默认值
*
* @param bean
* Object
* @param properties
* Map
* @param defaultValue
* String
* @throws IllegalAccessException
* @throws InvocationTargetException
*/
public static void copyMap2Bean(Object bean, Map properties, String defaultValue){
try {
copyMap2Bean1(bean, properties, defaultValue);
} catch (Exception e) {
throw new RRException(e.toString(), -1);
}
}
private static void copyMap2Bean1(Object bean, Map properties, String defaultValue)
throws IllegalAccessException, InvocationTargetException {
// Do nothing unless both arguments have been specified
if ((bean == null) || (properties == null)) {
return;
}
// Loop through the property name/value pairs to be set
Iterator names = properties.keySet().iterator();
while (names.hasNext()) {
String name = (String) names.next();
// Identify the property name and value(s) to be assigned
if (name == null) {
continue;
}
Object value = properties.get(name);
try {
Class clazz = PropertyUtils.getPropertyType(bean, name);
if (null == clazz) {
continue;
}
String className = clazz.getName();
if (className.equalsIgnoreCase("java.sql.Timestamp")) {
if (value == null || value.equals("")) {
continue;
}
}
if (className.equalsIgnoreCase("java.lang.String")) {
if (value == null) {
value = defaultValue;
}
}
getInstance().setSimpleProperty(bean, name, value);
} catch (NoSuchMethodException e) {
continue;
}
}
}
public BeanUtils() {
super();
}
}