📄 propertyutil.java
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package com;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import javax.servlet.http.HttpServletRequest;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
/**
* 通过类反射进行对象与对象之间、对象与request中传递的参数之间的值拷贝。 使用规则： 1）对象与对象之间的值拷贝，对象的属性名称必须相同，大小写敏感。
* 2）对象与request中参数之间的值拷贝，对象的属性名称必须与参数名称相同。 3）支持String 跟
* long,double,Date数据类型的自动转换。
* <p>
* 2005-10-29 <br>
* 增加 Long,Double,Short,short 类型的数据与 String类型的转换，增加 Long与long , Double与double ,
* Short与short的类型转换。 修改bug 无法拷贝对象super class的field的值
*
*
*
*
* @author migro
* @version v 1.0 $ 2005-10-22 20:47:44 $
*/
public class PropertyUtil {
private static final String TYPE_STRING = "java.lang.String";
private static final String TYPE_LONG = "long";
private static final String TYPE_LONG_OBJ = "java.lang.Long";
private static final String TYPE_DOUBLE = "double";
private static final String TYPE_DOUBLE_OBJ = "java.lang.Double";
private static final String TYPE_DATE = "java.util.Date";
private static final String TYPE_SET = "java.util.Set";
private static final String TYPE_HASHSET = "java.util.HashSet";
private static final String TYPE_SHORT = "short";
private static final String TYPE_SHORT_OBJ = "java.lang.Short";
private Date start = new Date();
public PropertyUtil() {
}
/**
* 对象之间拷贝相同名称属性的值
*
* @param target
* 目标对象
* @param source
* 源对象
* @throws SysException
*/
public void copy(Object target, Object source) throws SysException {
Class cTar = target.getClass();
Class cSou = source.getClass();
Class[] paramType = new Class[1];
Object[] paramValue = new Object[1];
Field[] fTar = getExtendsFields(cTar);// cTar.getDeclaredFields();
Field[] fSou = getExtendsFields(cSou);// cSou.getDeclaredFields();
String fNameTar = null; // target field name
String fTypeTar = null; // target field type
String fNameSou = null; // source field name
String fTypeSou = null; // source field type
Method setMethod = null;
Object tmpVal = null;
try {
for (int i = 0; i < fSou.length; i++) {
fNameSou = fSou[i].getName();
fTypeSou = fSou[i].getType().getName();
for (int j = 0; j < fTar.length; j++) {
fNameTar = fTar[j].getName();
fTypeTar = fTar[j].getType().getName();
/** find the same field , copy value */
if (fNameSou.equals(fNameTar)) {
/** set the target obj setXXX() method parameter type */
paramType[0] = fTar[j].getType();
/** get the property value from source obj */
tmpVal = getPropertyValue(fNameSou, null, null, source);
if (fTypeSou.equals(fTypeTar)) { // the same type
paramValue[0] = tmpVal;
} else { // need type convert
paramValue[0] = objTypeConvert(fTypeTar, fTypeSou,
tmpVal);
}
/** get the setXXX() method from target obj */
setMethod = cTar.getMethod(getSetMethodName(fNameTar),
paramType);
/** invoker the setXXX() method,complete property copy */
setMethod.invoke(target, paramValue);
break;
}
}
}
} catch (NoSuchMethodException e) {
throw new SysException("SYS-0014", "SYS", "网络繁忙，请稍后再试！", this
.getClass().getName()
+ ":objectToObject()", null, e, "值对象缺少基本方法:" + fNameTar);
} catch (InvocationTargetException e) {
throw new SysException("SYS-0015", "SYS", "网络繁忙，请稍后再试！", this
.getClass().getName()
+ ":objectToObject()", null, e);
} catch (IllegalAccessException e) {
throw new SysException("SYS-0016", "SYS", "网络繁忙，请稍后再试！", this
.getClass().getName()
+ ":objectToObject()", null, e);
} catch (NullPointerException upe) {
throw upe;
}
}
/**
* 从Httprequest对象中获得对象中变量的值
*
* @param target
* 目标对象
* @param httpRequest
* JSP、Servlet中的请求对象
* @throws SysException
*/
public List copyXml(Object target, HttpServletRequest httpRequest)
throws SysException {
CDataSet cDataSet = new CDataSet();
cDataSet.getDataSet(httpRequest);
List ret = new ArrayList();
Class cTar = target.getClass();
Class[] paramType = new Class[1];
Object[] paramValue = new Object[1];
Field[] fTar = getExtendsFields(cTar);// cTar.getDeclaredFields();
String fNameTar = null; // target field name
String fTypeTar = null; // target field type
Method setMethod = null;
Object tmpVal = null;
try {
Document doc = cDataSet.getDoc();
NodeList nodes = doc.getElementsByTagName(getClassName(cTar));
if (nodes != null) {
for (int i = 0; i < nodes.getLength(); i++) {
for (int j = 0; j < fTar.length; j++) {
fNameTar = fTar[j].getName();
fTypeTar = fTar[j].getType().getName();
/** find the value from http request */
/** set the target obj setXXX() method parameter type */
paramType[0] = fTar[j].getType();
/** get the property value from http request */
NodeList fileds = doc.getElementsByTagName(fNameTar);
tmpVal = null;
if (fileds != null && fileds.item(i) != null
&& fileds.item(i).getFirstChild() != null) {
tmpVal = fileds.item(i).getFirstChild()
.getNodeValue();
}
if (tmpVal != null) {
if (fTypeTar.equals("java.lang.String")) {
paramValue[0] = tmpVal;
} else { // need type convert
paramValue[0] = objTypeConvert(fTypeTar,
"java.lang.String", tmpVal);
}
/** get the setXXX() method from target obj */
setMethod = cTar.getMethod(
getSetMethodName(fNameTar), paramType);
/**
* invoker the setXXX() method,complete property
* copy
*/
setMethod.invoke(target, paramValue);
}
}
ret.add(target);
this.toString(target);
}
}
} catch (NoSuchMethodException e) {
throw new SysException("SYS-0014", "SYS", "网络繁忙，请稍后再试！", this
.getClass().getName()
+ ":requestToObject()", null, e, "值对象缺少基本方法:" + fNameTar);
} catch (InvocationTargetException e) {
throw new SysException("SYS-0015", "SYS", "网络繁忙，请稍后再试！", this
.getClass().getName()
+ ":requestToObject()", null, e, "property<" + fNameTar
+ "> value<" + tmpVal + ">");
} catch (IllegalAccessException e) {
throw new SysException("SYS-0016", "SYS", "网络繁忙，请稍后再试！", this
.getClass().getName()
+ ":requestToObject()", null, e);
} catch (NullPointerException upe) {
throw upe;
}
long tmp = new Date().getTime() - start.getTime();
System.out.println("dom耗时：" + tmp + " ms");
return ret;
}
/**
* 从Httprequest对象中获得对象中变量的值
*
* @param target
* 目标对象
* @param httpRequest
* JSP、Servlet中的请求对象
* @throws SysException
*/
public void copy(Object target, HttpServletRequest httpRequest)
throws SysException {
Class cTar = target.getClass();
Class[] paramType = new Class[1];
Object[] paramValue = new Object[1];
Field[] fTar = getExtendsFields(cTar);// cTar.getDeclaredFields();
String fNameTar = null; // target field name
String fTypeTar = null; // target field type
Method setMethod = null;
Object tmpVal = null;
try {
for (int j = 0; j < fTar.length; j++) {
fNameTar = fTar[j].getName();
fTypeTar = fTar[j].getType().getName();
/** find the value from http request */
/** set the target obj setXXX() method parameter type */
paramType[0] = fTar[j].getType();
/** get the property value from http request */
tmpVal = httpRequest.getParameter(fNameTar);
if (tmpVal != null) {
if (fTypeTar.equals("java.lang.String")) { // the same type
paramValue[0] = tmpVal;
} else { // need type convert
paramValue[0] = objTypeConvert(fTypeTar,
"java.lang.String", tmpVal);
}
/** get the setXXX() method from target obj */
setMethod = cTar.getMethod(getSetMethodName(fNameTar),
paramType);
/** invoker the setXXX() method,complete property copy */
setMethod.invoke(target, paramValue);
}
}
} catch (NoSuchMethodException e) {
throw new SysException("SYS-0014", "SYS", "网络繁忙，请稍后再试！", this
.getClass().getName()
+ ":requestToObject()", null, e, "值对象缺少基本方法:" + fNameTar);
} catch (InvocationTargetException e) {
throw new SysException("SYS-0015", "SYS", "网络繁忙，请稍后再试！", this
.getClass().getName()
+ ":requestToObject()", null, e, "property<" + fNameTar
+ "> value<" + tmpVal + ">");
} catch (IllegalAccessException e) {
throw new SysException("SYS-0016", "SYS", "网络繁忙，请稍后再试！", this
.getClass().getName()
+ ":requestToObject()", null, e);
} catch (NullPointerException upe) {
throw upe;
}
}
/**
* 从数据集ResultSet对象中获得对象中变量的值
*
* @param target目标对象
* @param res数据集对象
* @throws SysException
*/
public void copy(Object target, ResultSet res) throws SysException {
Class cTar = target.getClass();
Class[] paramType = new Class[1];
Object[] paramValue = new Object[1];
Field[] fTar = getExtendsFields(cTar);// cTar.getDeclaredFields();
String fNameTar = null; // target field name
String fTypeTar = null; // target field type
Method setMethod = null;
String tmpVal = null;
try {
for (int j = 0; j < fTar.length; j++) {
fNameTar = fTar[j].getName();
fTypeTar = fTar[j].getType().getName();
/** find the value from http request */
/** set the target obj setXXX() method parameter type */
paramType[0] = fTar[j].getType();
/** get the property value from ResultSet */
try {
tmpVal = res.getString(fNameTar);
} catch (SQLException sss) {
// ignore SQLExceptions
tmpVal = null;
}
if (tmpVal != null) {
tmpVal = tmpVal.trim();
}
if ((tmpVal != null) && (tmpVal.length() > 0)) {
if (fTypeTar.equals("java.lang.String")) { // the same type
paramValue[0] = tmpVal;
} else { // need type convert
paramValue[0] = objTypeConvert(fTypeTar,
"java.lang.String", tmpVal);
}
/** get the setXXX() method from target obj */
setMethod = cTar.getMethod(getSetMethodName(fNameTar),
paramType);
/** invoker the setXXX() method,complete property copy */
setMethod.invoke(target, paramValue);
}
}
} catch (NoSuchMethodException e) {
throw new SysException("SYS-0014", "SYS", "网络繁忙，请稍后再试！", this
.getClass().getName()
+ ":requestToObject()", null, e, "值对象缺少基本方法:" + fNameTar);
} catch (InvocationTargetException e) {
throw new SysException("SYS-0015", "SYS", "网络繁忙，请稍后再试！", this
.getClass().getName()
+ ":requestToObject()", null, e, "property<" + fNameTar
+ "> value<" + tmpVal + ">");
} catch (IllegalAccessException e) {
throw new SysException("SYS-0016", "SYS", "网络繁忙，请稍后再试！", this
.getClass().getName()
+ ":requestToObject()", null, e);
} catch (NullPointerException upe) {
throw upe;
}
}
private Object getPropertyValue(String fieldName, Class[] types,
Object[] params, Object obj) throws NoSuchMethodException,
InvocationTargetException, IllegalAccessException {
Object ret = null;
Class c = obj.getClass();
Method getMethod = c.getMethod(getGetMethodName(fieldName), types);
ret = getMethod.invoke(obj, params);
// System.out.println(getMethod.getName());
return ret;
}
private String getGetMethodName(String fieldName) {
if (fieldName == null) {
return null;
}
StringBuffer ret = new StringBuffer();
ret.append("get");
ret.append(fieldName.substring(0, 1).toUpperCase());
ret.append(fieldName.substring(1));
return ret.toString();
}
private String getSetMethodName(String fieldName) {
if (fieldName == null) {
return null;
}
StringBuffer ret = new StringBuffer();
ret.append("set");
ret.append(fieldName.substring(0, 1).toUpperCase());
ret.append(fieldName.substring(1));
return ret.toString();
}
private Object objTypeConvert(String targetType, String sourceType,
Object obj) throws SysException {
Object ret = null;
boolean exception = false;
try {
if (targetType.equals(TYPE_STRING)) { // convert to String
if (obj != null) {
if (sourceType.equals(TYPE_DATE)
|| sourceType.equals(TYPE_DOUBLE)
|| sourceType.equals(TYPE_LONG)
|| sourceType.equals(TYPE_SHORT)
|| sourceType.equals(TYPE_LONG_OBJ)
|| sourceType.equals(TYPE_DOUBLE_OBJ)
|| sourceType.equals(TYPE_SHORT_OBJ)) {
ret = formatString(obj);
} else {
exception = true;
}
} else {
ret = null;
}
} else if (targetType.equals(TYPE_DOUBLE)) { // convert to double
if (sourceType.equals(TYPE_STRING)) {
String tmp = (String) obj;
if ((tmp == null) || (tmp.length() < 1)) {
tmp = "0.0";
}
ret = new Double(tmp);
} else if (sourceType.equals(TYPE_DOUBLE_OBJ)) {
ret = obj;
} else {
exception = true;
}
} else if (targetType.equals(TYPE_LONG)) { // convert to long
if (sourceType.equals(TYPE_STRING)) {
String tmp = (String) obj;
if ((tmp == null) || (tmp.length() < 1)) {
tmp = "0";
}
ret = new Long(tmp);
} else if (sourceType.equals(TYPE_LONG_OBJ)) {
ret = obj;
} else {
exception = true;
}
} else if (targetType.equals(TYPE_DATE)) { // convert to Date
if (sourceType.equals(TYPE_STRING)) {
String tmp = (String) obj;
if ((tmp == null) || (tmp.length() < 1)) {
ret = null;
} else {
ret = DateUtil.parseDate(tmp);
}
} else {
exception = true;
}
} else if (targetType.equals(TYPE_SHORT)) { // convert to short
if (sourceType.equals(TYPE_STRING)) {
String tmp = (String) obj;
if ((tmp == null) || (tmp.length() < 1)) {
tmp = "0";
}
ret = new Short(tmp);
} else if (sourceType.equals(TYPE_SHORT_OBJ)) {
ret = obj;
} else {
exception = true;
}
} else if (targetType.equals(TYPE_LONG_OBJ)) { // convert to Long
if (sourceType.equals(TYPE_STRING)) {
String tmp = (String) obj;
if (tmp == null || tmp.length() < 1) {
tmp = "0";
}
ret = new Long(tmp);
} else if (sourceType.equals(TYPE_LONG)) {
String tmp = formatString(obj);
ret = new Long(tmp);
} else {
exception = true;
}
} else if (targetType.equals(TYPE_DOUBLE_OBJ)) { // convert to
// Long
if (sourceType.equals(TYPE_STRING)) {
String tmp = (String) obj;
if (tmp == null || tmp.length() < 1) {
tmp = "0.0";
}
ret = new Double(tmp);
} else if (sourceType.equals(TYPE_DOUBLE)) {
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