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java 常用工具类,作为 apache-commons的补充
There is a newer version: 5.3.2302
package com.centit.support.xml;

import com.centit.support.algorithm.*;
import com.centit.support.common.JavaBeanField;
import com.centit.support.common.JavaBeanMetaData;
import org.apache.commons.lang3.StringUtils;
import org.dom4j.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.math.BigDecimal;
import java.util.*;

/**
 * Created by codefan on 17-6-30.
 */
@SuppressWarnings("unused")
public abstract class XMLObject {

    protected static final Logger logger = LoggerFactory.getLogger(XMLObject.class);

    private XMLObject() {
        throw new IllegalAccessError("Utility class");
    }

    public static Element createXMLElement(String elementName, String valueType, Object value) {
        Element element = DocumentHelper.createElement(elementName);
        element.addAttribute("type", valueType);
        element.setText(StringBaseOpt.objectToString(value));
        return element;
    }

    @SuppressWarnings("unchecked")
    public static Element createXMLElementFromObject(String elementName, Object object) {

        if (object instanceof String) {
            return createXMLElement(elementName, "String", object);
        }

        if (object instanceof Long) {
            return createXMLElement(elementName, "Long", object);
        }

        if (object instanceof BigDecimal) {
            return createXMLElement(elementName, "BigDecimal", object);
        }

        if (object instanceof Boolean) {
            return createXMLElement(elementName, "Boolean", object);
        }

        if (object instanceof Integer) {
            return createXMLElement(elementName, "Integer", object);
        }
        if (object instanceof Number) {
            return createXMLElement(elementName, "Number", object);
        }
        if (object instanceof Date) {
            return createXMLElement(elementName, "Date", object);
        }
        if (object instanceof Map) {
            Element element = DocumentHelper.createElement(elementName);
            element.addAttribute("type", "Object");
            element.addAttribute("class", object.getClass().getName());
            for (Map.Entry jo : ((Map) object).entrySet()) {
                if (jo.getValue() != null)
                    element.add(createXMLElementFromObject(
                        StringBaseOpt.objectToString(jo.getKey()), jo.getValue()));
            }
            return element;
        }

        if (object instanceof Object[]) {
            Element element = DocumentHelper.createElement(elementName);
            element.addAttribute("type", "Array");
            element.addAttribute("class", object.getClass().getName());
            for (Object obj : (Object[]) object) {
                if (obj != null) {
                    element.add(createXMLElementFromObject("item", obj));
                }
            }
            return element;
        } else if (object instanceof Collection) {
            Element element = DocumentHelper.createElement(elementName);
            element.addAttribute("type", "Array");
            element.addAttribute("class", object.getClass().getName());
            for (Object obj : (Collection) object) {
                if (obj != null) {
                    element.add(createXMLElementFromObject("item", obj));
                }
            }
            return element;
        }

        if (ReflectionOpt.isScalarType(object.getClass())) {
            return createXMLElement(elementName, "String", object);
        } else {
            JavaBeanMetaData jbm = JavaBeanMetaData.createBeanMetaDataFromType(object.getClass());
            Map fields = jbm.getFileds();
            if (fields == null)
                return createXMLElement(elementName, "String", object);

            Element element = DocumentHelper.createElement(elementName);
            element.addAttribute("type", "Object");
            element.addAttribute("class", object.getClass().getName());
            for (Map.Entry field : fields.entrySet()) {
                Object obj = field.getValue().getObjectFieldValue(object);
                if (obj != null)
                    element.add(createXMLElementFromObject(field.getKey(), obj));

            }
            return element;
        }
    }

    public static String jsonObjectToXMLString(Map json) {
        Element element = createXMLElementFromObject("object", json);
        return element.asXML();
        //return DocumentHelper.createDocument(element).asXML();
    }

    public static String objectToXMLString(String rootName, Object object) {
        Element element = createXMLElementFromObject(rootName, object);
        return element.asXML();
        //return DocumentHelper.createDocument(element).asXML();
    }

    public static String objectToXMLString(Object object) {
        return objectToXMLString("object", object);
    }

    public static Object elementToObject(Element element) {
        //Map objectMap = new HashMap<>();
        Attribute attr = element.attribute("type");
        String stype = attr == null ? null : element.attribute("type").getValue();
        if (StringUtils.equals("Date", stype)) {
            return DatetimeOpt.smartPraseDate(element.getTextTrim());
        } else if (StringUtils.equals("Long", stype)) {
            return NumberBaseOpt.castObjectToLong(element.getTextTrim());
        } else if (StringUtils.equals("Integer", stype)) {
            return NumberBaseOpt.castObjectToInteger(element.getTextTrim());
        } else if (StringUtils.equals("Number", stype)) {
            return NumberBaseOpt.castObjectToDouble(element.getTextTrim());
        } else if (StringUtils.equals("Boolean", stype)) {
            return StringRegularOpt.isTrue(element.getTextTrim());
        } else if (StringUtils.equals("BigDecimal", stype)) {
            return new BigDecimal(element.getTextTrim());
        } else if (StringUtils.equals("Array", stype)) {
            List subElements = element.elements();
            if (subElements == null)
                return null;
            List