Java XML JAXB String to Object fromXml(File xmlPath, Class type)

Description

from Xml

License

Open Source License

Declaration

public static <T> T fromXml(File xmlPath, Class<T> type) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;

import javax.xml.bind.Unmarshaller;
import java.io.*;

public class Main {
    private static final String ENCODING = "GBK";

    public static <T> T fromXml(File xmlPath, Class<T> type) {
        BufferedReader reader = null;
        StringBuilder sb = null;/*ww w.  j  ava  2  s .  c o m*/
        try {
            reader = new BufferedReader(new InputStreamReader(new FileInputStream(xmlPath), ENCODING));
            String line = null;
            sb = new StringBuilder();
            while ((line = reader.readLine()) != null) {
                sb.append(line + "\n");
            }
        } catch (FileNotFoundException e) {
            throw new IllegalArgumentException(e.getMessage());
        } catch (Exception e) {
            throw new RuntimeException(e);
        } finally {
            if (reader != null) {
                try {
                    reader.close();
                } catch (IOException e) {
                    //ignore
                }
            }
        }
        return fromXml(sb.toString(), type);
    }

    public static <T> T fromXml(String xml, Class<T> type) {
        if (xml == null || xml.trim().equals("")) {
            return null;
        }
        JAXBContext jc = null;
        Unmarshaller u = null;
        T object = null;
        try {
            jc = JAXBContext.newInstance(type);
            u = jc.createUnmarshaller();
            object = (T) u.unmarshal(new ByteArrayInputStream(xml.getBytes(ENCODING)));
        } catch (JAXBException e) {
            throw new RuntimeException(e);
        } catch (UnsupportedEncodingException e) {
            throw new RuntimeException(e);
        }
        return object;
    }
}

Related

1. fromStream(Class jaxbClass, InputStream is)
2. fromStringToObject(String xmlString, Class xmlObjClass)
3. fromXml(@SuppressWarnings("rawtypes") Class clazz, String stringXml)
4. fromXML(Class clazz, InputStream is)
5. fromXml(Class tClass, InputStream inputStream)
6. fromXML(final byte[] data, final Class type)
7. fromXml(final Reader reader, final Class dtoClass)
8. fromXml(InputStream input, Class clazz)
9. fromXml(InputStream xml, Class objectClass)