Java XML JAXB String to Object convertToObject(Class clazz, InputStream inputStream)

Description

XML to Object

License

Apache License

Parameter

Parameter	Description
T	a parameter
clazz	a parameter
inputStream	a parameter

Declaration

public static <T> T convertToObject(Class<T> clazz, InputStream inputStream) 

Method Source Code

//package com.java2s;
//License from project: Apache License 

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

import javax.xml.bind.Unmarshaller;
import java.io.*;
import java.util.HashMap;
import java.util.Map;

public class Main {
    private static final ThreadLocal<Map<Class<?>, Unmarshaller>> uMapLocal = new ThreadLocal<Map<Class<?>, Unmarshaller>>() {
        @Override//from w  ww  .  java 2s .  com
        protected Map<Class<?>, Unmarshaller> initialValue() {
            return new HashMap<>();
        }
    };

    /**
     * XML to Object
     * @param <T>
     * @param clazz
     * @param xml
     * @return
     */
    public static <T> T convertToObject(Class<T> clazz, String xml) {
        return convertToObject(clazz, new StringReader(xml));
    }

    /**
     * XML to Object
     * @param <T>
     * @param clazz
     * @param inputStream
     * @return
     */
    public static <T> T convertToObject(Class<T> clazz, InputStream inputStream) {
        return convertToObject(clazz, new InputStreamReader(inputStream));
    }

    /**
     * XML to Object
     * @param <T>
     * @param clazz
     * @param reader
     * @return
     */
    @SuppressWarnings("unchecked")
    public static <T> T convertToObject(Class<T> clazz, Reader reader) {
        try {
            Map<Class<?>, Unmarshaller> uMap = uMapLocal.get();
            if (!uMap.containsKey(clazz)) {
                JAXBContext jaxbContext = JAXBContext.newInstance(clazz);
                Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();
                uMap.put(clazz, unmarshaller);
            }
            return (T) uMap.get(clazz).unmarshal(reader);
        } catch (JAXBException e) {
            e.printStackTrace();
        }
        return null;
    }
}

Related

1. convertStringToJAXB(String str)
2. convertToJAXBException(String msg, Throwable e)
3. convertToXmlFile(File file, Object source, Class... type)
4. convertXmlFileToObject(Class clazz, String xmlPath)
5. convertXmlToObj(Class clazz, String xmlStr)
6. convertXMLToObject(byte[] data, Class clazz)