JaxbXmlUtil.java
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package com.huaheng.common.utils;
import com.huaheng.common.exception.service.ServiceException;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;
import java.io.*;
import java.text.MessageFormat;
public class JaxbXmlUtil {
public static final String DEFAULT_ENCODING = "UTF-8";
/**
* pojo转换成xml 默认编码UTF-8
*
* @param obj 待转化的对象
* @return xml格式字符串
* @throws Exception JAXBException
*/
public static String convertToXml(Object obj) {
return convertToXml(obj, DEFAULT_ENCODING);
}
/**
* pojo转换成xml
*
* @param obj 待转化的对象
* @param encoding 编码
* @return xml格式字符串
* @throws Exception JAXBException
*/
public static String convertToXml(Object obj, String encoding){
if(obj != null){
Marshaller marshaller = null;
JAXBContext context = null;
try{
context = JAXBContext.newInstance(obj.getClass());
}catch (Exception e){
e.printStackTrace();
}
try{
marshaller = context.createMarshaller();
}catch (Exception e){
e.printStackTrace();
}
// 指定是否使用换行和缩排对已编组 XML 数据进行格式化的属性名称。
try{
marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
}catch (Exception e){
e.printStackTrace();
}
try{
marshaller.setProperty(Marshaller.JAXB_ENCODING, encoding);
}catch (Exception e){
e.printStackTrace();
}
StringWriter writer = new StringWriter();
try{
marshaller.marshal(obj, writer);
}catch (Exception e){
e.printStackTrace();
}
String result = null;
result = writer.toString();
writer.flush();
try{
writer.close();
}catch (Exception e){
e.printStackTrace();
}
return result;
}
throw new ServiceException("xml对象不能为空！");
}
/**
* xml转换成JavaBean
*
* @param xml xml格式字符串
* @param t 待转化的对象
* @return 转化后的对象
* @throws Exception JAXBException
*/
@SuppressWarnings("unchecked")
public static <T> T convertToJavaBean(String xml, Class<T> t) throws Exception {
T obj = null;
JAXBContext context = JAXBContext.newInstance(t);
Unmarshaller unmarshaller = context.createUnmarshaller();
try {
obj = (T) unmarshaller.unmarshal(new StringReader(xml));
}catch (Exception e){
e.printStackTrace();
}
return obj;
}
@SuppressWarnings("unchecked")
public static <T> T readConfig(Class<T> clazz, String config, Object... arguments) throws IOException, JAXBException {
InputStream is = null;
try {
if (arguments.length > 0) {
config = MessageFormat.format(config, arguments);
}
// logger.trace("read configFileName=" + config);
JAXBContext jc = JAXBContext.newInstance(clazz);
Unmarshaller u = jc.createUnmarshaller();
is = new FileInputStream(config);
return (T) u.unmarshal(is);
} catch (IOException e) {
throw e;
} catch (JAXBException e) {
throw e;
} finally {
if (is != null) {
is.close();
}
}
}
@SuppressWarnings("unchecked")
public static <T> T readConfigFromStream(Class<T> clazz, InputStream dataStream) throws JAXBException {
try {
JAXBContext jc = JAXBContext.newInstance(clazz);
Unmarshaller u = jc.createUnmarshaller();
return (T) u.unmarshal(dataStream);
} catch (JAXBException e) {
throw e;
}
}
}