Object转XML && XML转Object 测试类：
package com.insist.objectxml;
import com.insist.objectxml.common.JaxbMapper;
import com.insist.objectxml.person.Body;
import com.insist.objectxml.person.Person;
/**
* 描述：测试对象——>XML || XML——>对象<br>
* 作者：liqijing <br>
* 修改日期：2015-4-6下午07:38:17 <br>
* E-mail: lijinginsistsmile@163.com <br>
*/
public class ObjectXml {
public static void main(String[] args) {
String reqXml = getXml();
System.out.println("输出XML："+"\n"+reqXml);
System.out.println("解析XML-->Object"+"===========================================");
Person person = getPerson(reqXml);
System.out.println("id="+person.getPerId()+",name="+person.getPerName()+",age="+person.getPerAge()+",sex="+person.getPerSex()+",email="+person.getEmail());
}
/**
* 方法名称: getXml<br>
* 描述： Object --> XML
* 作者: liqijing
* 修改日期：2015-4-6下午07:46:03
* @param body
* @param encoding
* @return
*/
public static String getXml(){
Body body = new Body();
body.setPerson(initPerson());
String reqXml = JaxbMapper.toXml(body,"GBK") ;
if(reqXml == null){
return "组装XML出错！" ;
}
return reqXml ;
}
/**
* 方法名称: getPerson<br>
* 描述：XML ---> Object
* 作者: liqijing
* 修改日期：2015-4-6下午07:47:21
* @param reqXml
* @return
*/
public static Person getPerson(String reqXml){
Body body = JaxbMapper.fromXml(reqXml,Body.class) ;
return body.getPerson() ;
}
/**
* 方法名称: initPerson<br>
* 描述：初始化person对象
* 作者: liqijing
* 修改日期：2015-4-6下午07:38:12
* @return
*/
public static Person initPerson(){
Person person = new Person("100000","马云","24","男","lijinginsistsmile@163.com");
return person ;
}
}
JaxbMapper生成&&解析：
/*******************************************************************************
* Copyright (c) 2005,2014 springside.github.io
*
* Licensed under the Apache License,Version 2.0 (the "License");
*******************************************************************************/
package com.insist.objectxml.common;
import java.io.StringReader;
import java.io.StringWriter;
import java.util.Collection;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBElement;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;
import javax.xml.bind.annotation.XmlAnyElement;
import javax.xml.namespace.QName;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.Validate;
import com.insist.objectxml.exception.Exceptions;
/**
* 使用Jaxb2.0实现XML<->Java Object的Mapper.
*
* 在创建时需要设定所有需要序列化的Root对象的Class.
* 特别支持Root对象是Collection的情形.
*
* @author calvin
*/
public class JaxbMapper {
private static final Exceptions Exceptions = null;
private static ConcurrentMap<Class,JAXBContext> jaxbContexts = new ConcurrentHashMap<Class,JAXBContext>();
/**
* Java Object->Xml without encoding.
*/
public static String toXml(Object root) {
Class clazz = Reflections.getUserClass(root);
return toXml(root,clazz,null);
}
/**
* Java Object->Xml with encoding.
*/
public static String toXml(Object root,String encoding) {
Class clazz = Reflections.getUserClass(root);
return toXml(root,encoding);
}
/**
* Java Object->Xml with encoding.
*/
public static String toXml(Object root,Class clazz,String encoding) {
try {
StringWriter writer = new StringWriter();
createMarshaller(clazz,encoding).marshal(root,writer);
return writer.toString();
} catch (JAXBException e) {
throw Exceptions.unchecked(e);
}
}
/**
* Java Collection->Xml without encoding,特别支持Root Element是Collection的情形.
*/
public static String toXml(Collection<?> root,String rootName,Class clazz) {
return toXml(root,rootName,null);
}
/**
* Java Collection->Xml with encoding,String encoding) {
try {
CollectionWrapper wrapper = new CollectionWrapper();
wrapper.collection = root;
JAXBElement<CollectionWrapper> wrapperElement = new JAXBElement<CollectionWrapper>(new QName(rootName),CollectionWrapper.class,wrapper);
StringWriter writer = new StringWriter();
createMarshaller(clazz,encoding).marshal(wrapperElement,writer);
return writer.toString();
} catch (JAXBException e) {
throw Exceptions.unchecked(e);
}
}
/**
* Xml->Java Object.
*/
public static <T> T fromXml(String xml,Class<T> clazz) {
try {
StringReader reader = new StringReader(xml);
return (T) createUnmarshaller(clazz).unmarshal(reader);
} catch (JAXBException e) {
throw Exceptions.unchecked(e);
}
}
/**
* 创建Marshaller并设定encoding(可为null).
* 线程不安全，需要每次创建或pooling。
*/
public static Marshaller createMarshaller(Class clazz,String encoding) {
try {
JAXBContext jaxbContext = getJaxbContext(clazz);
Marshaller marshaller = jaxbContext.createMarshaller();
marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT,Boolean.TRUE);
if (StringUtils.isNotBlank(encoding)) {
marshaller.setProperty(Marshaller.JAXB_ENCODING,encoding);
}
return marshaller;
} catch (JAXBException e) {
throw Exceptions.unchecked(e);
}
}
/**
* 创建UnMarshaller.
* 线程不安全，需要每次创建或pooling。
*/
public static Unmarshaller createUnmarshaller(Class clazz) {
try {
JAXBContext jaxbContext = getJaxbContext(clazz);
return jaxbContext.createUnmarshaller();
} catch (JAXBException e) {
throw Exceptions.unchecked(e);
}
}
protected static JAXBContext getJaxbContext(Class clazz) {
Validate.notNull(clazz,"'clazz' must not be null");
JAXBContext jaxbContext = jaxbContexts.get(clazz);
if (jaxbContext == null) {
try {
jaxbContext = JAXBContext.newInstance(clazz,CollectionWrapper.class);
jaxbContexts.putIfAbsent(clazz,jaxbContext);
} catch (JAXBException ex) {
throw new RuntimeException("Could not instantiate JAXBContext for class [" + clazz + "]: " + ex.getMessage(),ex);
}
}
return jaxbContext;
}
/**
* 封装Root Element 是 Collection的情况.
*/
public static class CollectionWrapper {
@XmlAnyElement
protected Collection<?> collection;
}
}
/*******************************************************************************
* Copyright (c) 2005,Version 2.0 (the "License");
*******************************************************************************/
package com.insist.objectxml.common;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.Validate;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* 反射工具类.
*
* 提供调用getter/setter方法,访问私有变量,调用私有方法,获取泛型类型Class,被AOP过的真实类等工具函数.
*
* @author calvin
*/
public class Reflections {
private static final String SETTER_PREFIX = "set";
private static final String GETTER_PREFIX = "get";
private static final String CGLIB_CLASS_SEPARATOR = "$$";
private static Logger logger = LoggerFactory.getLogger(Reflections.class);
/**
* 调用Getter方法.
*/
public static Object invokeGetter(Object obj,String propertyName) {
String getterMethodName = GETTER_PREFIX + StringUtils.capitalize(propertyName);
return invokeMethod(obj,getterMethodName,new Class[] {},new Object[] {});
}
/**
* 调用Setter方法,仅匹配方法名。
*/
public static void invokeSetter(Object obj,String propertyName,Object value) {
String setterMethodName = SETTER_PREFIX + StringUtils.capitalize(propertyName);
invokeMethodByName(obj,setterMethodName,new Object[] { value });
}
/**
* 直接读取对象属性值,无视private/protected修饰符,不经过getter函数.
*/
public static Object getFieldValue(final Object obj,final String fieldName) {
Field field = getAccessibleField(obj,fieldName);
if (field == null) {
throw new IllegalArgumentException("Could not find field [" + fieldName + "] on target [" + obj + "]");
}
Object result = null;
try {
result = field.get(obj);
} catch (IllegalAccessException e) {
logger.error("不可能抛出的异常{}",e.getMessage());
}
return result;
}
/**
* 直接设置对象属性值,不经过setter函数.
*/
public static void setFieldValue(final Object obj,final String fieldName,final Object value) {
Field field = getAccessibleField(obj,fieldName);
if (field == null) {
throw new IllegalArgumentException("Could not find field [" + fieldName + "] on target [" + obj + "]");
}
try {
field.set(obj,value);
} catch (IllegalAccessException e) {
logger.error("不可能抛出的异常:{}",e.getMessage());
}
}
/**
* 直接调用对象方法,无视private/protected修饰符.
* 用于一次性调用的情况，否则应使用getAccessibleMethod()函数获得Method后反复调用.
* 同时匹配方法名+参数类型，
*/
public static Object invokeMethod(final Object obj,final String methodName,final Class<?>[] parameterTypes,final Object[] args) {
Method method = getAccessibleMethod(obj,methodName,parameterTypes);
if (method == null) {
throw new IllegalArgumentException("Could not find method [" + methodName + "] on target [" + obj + "]");
}
try {
return method.invoke(obj,args);
} catch (Exception e) {
throw convertReflectionExceptionToUnchecked(e);
}
}
/**
* 直接调用对象方法,无视private/protected修饰符，
* 用于一次性调用的情况，否则应使用getAccessibleMethodByName()函数获得Method后反复调用.
* 只匹配函数名，如果有多个同名函数调用第一个。
*/
public static Object invokeMethodByName(final Object obj,final Object[] args) {
Method method = getAccessibleMethodByName(obj,methodName);
if (method == null) {
throw new IllegalArgumentException("Could not find method [" + methodName + "] on target [" + obj + "]");
}
try {
return method.invoke(obj,args);
} catch (Exception e) {
throw convertReflectionExceptionToUnchecked(e);
}
}
/**
* 循环向上转型,获取对象的DeclaredField,并强制设置为可访问.
*
* 如向上转型到Object仍无法找到,返回null.
*/
public static Field getAccessibleField(final Object obj,final String fieldName) {
Validate.notNull(obj,"object can't be null");
Validate.notBlank(fieldName,"fieldName can't be blank");
for (Class<?> superClass = obj.getClass(); superClass != Object.class; superClass = superClass.getSuperclass()) {
try {
Field field = superClass.getDeclaredField(fieldName);
makeAccessible(field);
return field;
} catch (NoSuchFieldException e) {// NOSONAR
// Field不在当前类定义,继续向上转型
}
}
return null;
}
/**
* 循环向上转型,获取对象的DeclaredMethod,并强制设置为可访问.
* 如向上转型到Object仍无法找到,返回null.
* 匹配函数名+参数类型。
*
* 用于方法需要被多次调用的情况. 先使用本函数先取得Method,然后调用Method.invoke(Object obj,Object... args)
*/
public static Method getAccessibleMethod(final Object obj,final Class<?>... parameterTypes) {
Validate.notNull(obj,"object can't be null");
Validate.notBlank(methodName,"methodName can't be blank");
for (Class<?> searchType = obj.getClass(); searchType != Object.class; searchType = searchType.getSuperclass()) {
try {
Method method = searchType.getDeclaredMethod(methodName,parameterTypes);
makeAccessible(method);
return method;
} catch (NoSuchMethodException e) {
// Method不在当前类定义,返回null.
* 只匹配函数名。
*
* 用于方法需要被多次调用的情况. 先使用本函数先取得Method,Object... args)
*/
public static Method getAccessibleMethodByName(final Object obj,final String methodName) {
Validate.notNull(obj,"methodName can't be blank");
for (Class<?> searchType = obj.getClass(); searchType != Object.class; searchType = searchType.getSuperclass()) {
Method[] methods = searchType.getDeclaredMethods();
for (Method method : methods) {
if (method.getName().equals(methodName)) {
makeAccessible(method);
return method;
}
}
}
return null;
}
/**
* 改变private/protected的方法为public，尽量不调用实际改动的语句，避免JDK的SecurityManager抱怨。
*/
public static void makeAccessible(Method method) {
if ((!Modifier.isPublic(method.getModifiers()) || !Modifier.isPublic(method.getDeclaringClass().getModifiers())) && !method.isAccessible()) {
method.setAccessible(true);
}
}
/**
* 改变private/protected的成员变量为public，尽量不调用实际改动的语句，避免JDK的SecurityManager抱怨。
*/
public static void makeAccessible(Field field) {
if ((!Modifier.isPublic(field.getModifiers()) || !Modifier.isPublic(field.getDeclaringClass().getModifiers()) || Modifier.isFinal(field.getModifiers())) && !field.isAccessible()) {
field.setAccessible(true);
}
}
/**
* 通过反射,获得Class定义中声明的泛型参数的类型,注意泛型必须定义在父类处
* 如无法找到,返回Object.class.
* eg.
* public UserDao extends HibernateDao<User>
*
* @param clazz The class to introspect
* @return the first generic declaration,or Object.class if cannot be determined
*/
public static <T> Class<T> getClassGenricType(final Class clazz) {
return getClassGenricType(clazz,0);
}
/**
* 通过反射,获得Class定义中声明的父类的泛型参数的类型.
* 如无法找到,返回Object.class.
*
* 如public UserDao extends HibernateDao<User,Long>
*
* @param clazz clazz The class to introspect
* @param index the Index of the generic ddeclaration,start from 0.
* @return the index generic declaration,or Object.class if cannot be determined
*/
public static Class getClassGenricType(final Class clazz,final int index) {
Type genType = clazz.getGenericSuperclass();
if (!(genType instanceof ParameterizedType)) {
logger.warn(clazz.getSimpleName() + "'s superclass not ParameterizedType");
return Object.class;
}
Type[] params = ((ParameterizedType) genType).getActualTypeArguments();
if ((index >= params.length) || (index < 0)) {
logger.warn("Index: " + index + ",Size of " + clazz.getSimpleName() + "'s Parameterized Type: " + params.length);
return Object.class;
}
if (!(params[index] instanceof Class)) {
logger.warn(clazz.getSimpleName() + " not set the actual class on superclass generic parameter");
return Object.class;
}
return (Class) params[index];
}
public static Class<?> getUserClass(Object instance) {
Validate.notNull(instance,"Instance must not be null");
Class clazz = instance.getClass();
if ((clazz != null) && clazz.getName().contains(CGLIB_CLASS_SEPARATOR)) {
Class<?> superClass = clazz.getSuperclass();
if ((superClass != null) && !Object.class.equals(superClass)) {
return superClass;
}
}
return clazz;
}
/**
* 将反射时的checked exception转换为unchecked exception.
*/
public static RuntimeException convertReflectionExceptionToUnchecked(Exception e) {
if ((e instanceof IllegalAccessException) || (e instanceof IllegalArgumentException) || (e instanceof NoSuchMethodException)) {
return new IllegalArgumentException(e);
} else if (e instanceof InvocationTargetException) {
return new RuntimeException(((InvocationTargetException) e).getTargetException());
} else if (e instanceof RuntimeException) {
return (RuntimeException) e;
}
return new RuntimeException("Unexpected Checked Exception.",e);
}
}
Person类
package com.insist.objectxml.person;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlType;
/**
* 描述：object转xml实体类<br>
* 作者：liqijing <br>
* 修改日期：2015-4-6下午07:29:49 <br>
* E-mail: lijinginsistsmile@163.com <br>
*/
@XmlType(name="Person",propOrder={"perId","perName","perAge","perSex","email"})
public class Person {
private String perId;
private String perName ;
private String perAge ;
private String perSex ;
private String email ;
@XmlElement(name = "PerId")
public String getPerId() {
return perId;
}
public void setPerId(String perId) {
this.perId = perId;
}
@XmlElement(name = "PerName")
public String getPerName() {
return perName;
}
public void setPerName(String perName) {
this.perName = perName;
}
@XmlElement(name = "PerAge")
public String getPerAge() {
return perAge;
}
public void setPerAge(String perAge) {
this.perAge = perAge;
}
@XmlElement(name = "PerSex")
public String getPerSex() {
return perSex;
}
public void setPerSex(String perSex) {
this.perSex = perSex;
}
@XmlElement(name = "PerEmail")
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public Person() {
// TODO Auto-generated constructor stub
}
public Person(String perId,String perName,String perAge,String perSex,String email) {
this.perId = perId;
this.perName = perName;
this.perAge = perAge;
this.perSex = perSex;
this.email = email ;
}
}
Body类：
package com.insist.objectxml.person;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
/**
* 描述：body标头<br>
* 作者：liqijing <br>
* 修改日期：2015-4-6下午07:34:49 <br>
* E-mail: lijinginsistsmile@163.com <br>
*/
@XmlRootElement(name = "Body")
public class Body {
private Person person ;
@XmlElement(name = "Person")
public Person getPerson() {
return person;
}
public void setPerson(Person person) {
this.person = person;
}
}
commons-lang3-3.1.jar
slf4j-api-1.7.5-sources.jar
slf4j-api-1.7.5.jar
很高兴与你们分享：
希望对需要实现
对象转XML或XML转对象的朋友们有帮助！
谢谢！
XML轻松学习手册