javabean、xml、json、map之间的相互转换

javabean转map

利用cglib的BeanMap类实现转换

import org.springframework.cglib.beans.BeanMap;/** *  * @Title: beanToMap * @Description: javabean转map * @param bean * @return */public static <T> Map<String, Object> beanToMap(T bean) {    Map<String, Object> beanMap = new HashMap<>(16);    if (bean != null) {        BeanMap tempMap = BeanMap.create(bean);        for (Object key : tempMap.keySet()) {            String putKey = String.valueOf(key);            Object putValue = tempMap.get(key);            beanMap.put(putKey, putValue);        }    }    return beanMap;}/** *  * @Title: beanListToMapList * @Description: List<T>转换为List<Map<String,Object>> * @param beanList * @return */public static <T> List<Map<String, Object>> beanToMapBatch(List<T> beanList) {    List<Map<String, Object>> beanMapList = new ArrayList<>(16);    if (beanList != null && beanList.size() > 0) {        for (T bean : beanList) {            Map<String, Object> beanMap = beanToMap(bean);            beanMapList.add(beanMap);        }    }    return beanMapList;}

map转javabean

利用cglib的BeanMap类实现转换

import org.springframework.cglib.beans.BeanMap;/** *  * @Title: mapToBean * @Description: map转javabean * @param beanMap * @param bean * @return */public static <T> T mapToBean(Map<String, Object> beanMap, T bean) {    BeanMap tempMap = BeanMap.create(bean);    tempMap.putAll(beanMap);    return bean;}/** *  * @Title: mapToBean * @Description: map转javabean * @param beanMap * @param beanClass * @return * @throws InstantiationException * @throws IllegalAccessException */public static <T> T mapToBean(Map<String, Object> beanMap, Class<T> beanClass)throws InstantiationException, IllegalAccessException {    T bean = beanClass.newInstance();    BeanMap tempMap = BeanMap.create(bean);    tempMap.putAll(beanMap);    return bean;}/** *  * @Title: mapToBeanBatch * @Description: List<Map<String,Object>>转List<T> * @param beanMap * @param beanClass * @return * @throws IllegalAccessException * @throws InstantiationException */public static <T> List<T> mapToBeanBatch(List<Map<String, Object>> beanMap, Class<T> beanClass)            throws InstantiationException, IllegalAccessException {    List<T> beanList = new ArrayList<>(16);    if (beanMap != null && beanMap.size() > 0) {        for (Map<String, Object> tempMap : beanMap) {            T bean = mapToBean(tempMap, beanClass);            beanList.add(bean);        }    }    return beanList;}

xml转map

使用dom4j

/** *  * @Title: parseXmlToMap * @Description: 解析xml，并返回map * @return * @throws IOException * @throws DocumentException */public static Map<String, Object> parseXmlToMap(HttpServletRequest request) throws IOException, DocumentException {    // 将解析的结果存入map集合中    Map<String, Object> map = new HashMap<>(16);    // 从request中获取流    InputStream inputStream = request.getInputStream();    // 使用dom4j读取输入流    SAXReader reader = new SAXReader();    Document document = reader.read(inputStream);    // 得到xml根元素    Element root = document.getRootElement();    // 得到根元素的所有子节点    List<Element> elementList = root.elements();    // 迭代    for (Element e : elementList) {        map.put(e.getName(), e.getText());    }    inputStream.close();    inputStream = null;    return map;}

xml转bean

使用jackson

/** *  * @Title: xmlToBean * @Description: xml转换成bean * @param request * @param beanClass * @return * @throws IOException */public static <T> T xmlToBean(HttpServletRequest request, Class<T> beanClass) throws IOException {    // 获取输入流    InputStream inputStream = request.getInputStream();    XmlMapper xmlMapper = new XmlMapper();    T bean = xmlMapper.readValue(inputStream, beanClass);    inputStream.close();    inputStream = null;    return bean;}jackson相关注解@JacksonXmlRootElement(localName = "xml")public class TextMessage implements Serializable {    /**     * 序列化     */    private static final long serialVersionUID = 2501424341457570501L;    /**     * 开发者微信号     */    @JacksonXmlProperty(localName = "ToUserName")    @JacksonXmlCData(value = true)    private String ToUserName;    ....}