package com.cloud.common.utils;
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import java.lang.reflect.Method;
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import java.util.Date;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.Set;
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import org.apache.commons.beanutils.BeanUtils;
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import org.apache.commons.beanutils.ConvertUtils;
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import org.apache.commons.beanutils.PropertyUtils;
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import org.apache.commons.beanutils.converters.DateConverter;
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import com.alibaba.fastjson.JSON;
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import com.alibaba.fastjson.serializer.SerializerFeature;
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import com.fasterxml.jackson.databind.ObjectMapper;
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/**
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* @author xxx
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* @date
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*/
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public class BeanUtil {
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/**
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* bean 转换为map
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*
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* @param bean
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* @return
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*/
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public static Map toMap(Object bean) {
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Map<String, Object> objectAsMap = null;
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try {
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objectAsMap = new ObjectMapper().convertValue(bean, Map.class);
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} catch (Exception e) {
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e.printStackTrace();
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}
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return objectAsMap;
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}
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/**
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* 把一个bean，构建另外一个bean
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*
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* @param requiredType
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* @param source
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* @return
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*/
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public static <T> T copy(Class<T> requiredType, Object source) {
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T dest = null;
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try {
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dest = requiredType.newInstance();
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} catch (Exception e1) {
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}
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try {
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PropertyUtils.copyProperties(dest, source);
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} catch (Exception e) {
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}
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return dest;
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}
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/**
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* 把一个bean转换成JSON字符串
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*
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* @param obj
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* @return
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*/
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public static String getJsonString(Object obj) {
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return JSON.toJSONString(obj, SerializerFeature.DisableCircularReferenceDetect, SerializerFeature.WriteMapNullValue,
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SerializerFeature.WriteNullNumberAsZero,
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SerializerFeature.WriteNullListAsEmpty,
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SerializerFeature.WriteNullStringAsEmpty,
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SerializerFeature.WriteNullBooleanAsFalse
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// ,
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// SerializerFeature.PrettyFormat
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);
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}
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/**
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* 把JSON字符串转换成bean
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*
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* @param requiredType
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* @param jsonData
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* @return
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*/
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public static <T> T getBean(Class<T> requiredType, String jsonData) {
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if (jsonData != null) {
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try {
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return JSON.parseObject(jsonData, requiredType);
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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T t = null;
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try {
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t = requiredType.newInstance();
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} catch (Exception e) {
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e.printStackTrace();
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}
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return t;
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}
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/**
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* 把map改成bean
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*
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* @param requiredType
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* @param map
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* @return
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*/
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public static <T> T toBean(Class<T> requiredType, Map map) {
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T t = null;
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String sLong = "java.lang.Long";
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String sString = "java.lang.String";
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try {
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t = requiredType.newInstance();
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} catch (Exception e) {
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e.printStackTrace();
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}
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try {
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//处理时间格式
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DateConverter dateConverter = new DateConverter();
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//设置日期格式
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dateConverter.setPatterns(new String[]{"yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd'T'HH:mm:ss.SSSZ", null});
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//注册格式
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ConvertUtils.register(dateConverter, Date.class);
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BeanUtils.populate(t, map);
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} catch (Exception e) {
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Set<Map.Entry> entrySet = map.entrySet();
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for (Map.Entry entry : entrySet) {
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try {
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String key = entry.getKey() + "";
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Object value = entry.getValue();
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key = key.substring(0, 1).toUpperCase() + key.substring(1);
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String methodName = "set" + key;
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Method[] declaredMethods = t.getClass().getDeclaredMethods();
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for (Method method : declaredMethods) {
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if (method.getName().equals(methodName)) {
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Class<?> parameterType = method.getParameterTypes()[0];
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String parameterTypeName = parameterType.getName();
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Object parameterValue = null;
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if (parameterTypeName.equals(sLong)) {
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parameterValue = Long.parseLong(value + "");
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}
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if (parameterTypeName.equals(sString)) {
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parameterValue = value + "";
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}
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method.invoke(t, parameterValue);
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}
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}
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} catch (Exception e2) {
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e2.printStackTrace();
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}
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}
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e.printStackTrace();
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}
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return t;
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}
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}
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