weaver-liande/src/weaver/zlldjcws/cgxxjl/util/CgxxUtil.java

package weaver.interfaces.zlldjcws.cgxxjl.util;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import net.sf.cglib.beans.BeanMap;
import org.apache.commons.beanutils.BeanUtils;

import java.beans.BeanInfo;
import java.beans.Introspector;
import java.beans.PropertyDescriptor;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Map;
import java.util.stream.Stream;

public class CgxxUtil {

    /**
     * 将对象装换为map
     *
     * @param bean
     * @return
     */
    public <T> Map<String, Object> beanToMapNotNull(T bean) {
        Map<String, Object> map = new HashMap<String, Object>();
        if (bean != null) {
            BeanMap beanMap = BeanMap.create(bean);
            for (Object key : beanMap.keySet()) {
                String value = String.valueOf(beanMap.get(key));
                if(!"".equals(value) && !"null".equalsIgnoreCase(value) && value !=null && value !=""){
                    map.put(String.valueOf(key).toLowerCase(), value);
                }
            }
        }
        return map;
    }


    public <T> Map<String, Object> beanToMap(T bean) {
        Map<String, Object> map = new HashMap<String, Object>();
        if (bean != null) {
            BeanMap beanMap = BeanMap.create(bean);
            for (Object key : beanMap.keySet()) {
                String value = String.valueOf(beanMap.get(key));
                if(!"".equals(value) && !"null".equalsIgnoreCase(value) && value !=null && value !=""){
                    map.put(String.valueOf(key).toLowerCase(), value);
                }
            }
        }
        return map;
    }

    /***
     *
     * @param bean
     * @return
     * @throws Exception
     */
    public Map<String, Object> bean2Map(Object bean) throws Exception {

        Map map = new HashMap<String, Object>();
        BeanInfo beanInfo = Introspector.getBeanInfo(bean.getClass(),
                Object.class);

        PropertyDescriptor[] pds = beanInfo.getPropertyDescriptors();
        for (PropertyDescriptor pd : pds) {
            String name = pd.getName();
            Method md = pd.getReadMethod();
            map.put(name, md.invoke(bean));
        }

        return map;
    }


    // 把map转换为bean 并且为属性赋值
    public <T> T map2Ban(Map<String, Object> beanMap, Class<T> beanType) throws Exception {
        T obj = beanType.newInstance();

        BeanInfo beanInfo = Introspector.getBeanInfo(beanType,
                Object.class);
        PropertyDescriptor[] pds = beanInfo.getPropertyDescriptors();

        for (PropertyDescriptor pd : pds) {
            String name = pd.getName();
            Object value = beanMap.get(name);
            Method md = pd.getWriteMethod();
            md.invoke(obj, value);
        }
        return obj;
    }

    /***
     *
     * @param object
     * @return
     */
    public Map<String, Object> beanToMap4Object(Object object) {
        Map<String, Object> map = new HashMap<>();
        Field[] fields = object.getClass().getDeclaredFields();
        Stream.of(fields).forEach(field -> {
            try {
                if (!"serialVersionUID".equals(field.getName())) {
                    field.setAccessible(true);
                    map.put(field.getName(), field.get(object));
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        });
        return map;
    }

    /***
     *
     * @param object
     * @return
     */
    public Map<String, Object> beanToMap4Object2(Object object) {
        Map<String, Object> map = new HashMap<>();
        try {
            BeanInfo beanInfo = Introspector.getBeanInfo(object.getClass());
            PropertyDescriptor[] descriptors = beanInfo.getPropertyDescriptors();
            Stream.of(descriptors).forEach(descriptor -> {
                try {
                    if (!"class".equals(descriptor.getName())) {
                        Method getter = descriptor.getReadMethod();
                        map.put(descriptor.getName(), getter.invoke(object));
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                }
            });
        } catch (Exception e) {
            e.printStackTrace();
        }
        return map;
    }


    /***
     *
     * @param bean
     * @param <T>
     * @return
     */
    public <T> Map<String, Object> beanToMap2(T bean) {
        Map<String, Object> map = new HashMap<>();
        Map beanMap = null;
        try {
            beanMap = BeanUtils.describe(bean);
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        } catch (InvocationTargetException e) {
            e.printStackTrace();
        } catch (NoSuchMethodException e) {
            e.printStackTrace();
        }
        return beanMap;
    }


    /**
     * 对象转Map
     * @param object
     * @return
     */
    public Map beanToMap3(Object object){
        return JSONObject.parseObject(JSON.toJSONString(object),Map.class);
    }

    /**
     * map转对象
     * @param map
     * @param beanClass
     * @param <T>
     * @return
     */
    public <T> T mapToBean3(Map map, Class<T> beanClass) {
        return JSONObject.parseObject(JSON.toJSONString(map), beanClass);

    }


}