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fuint-utils/src/main/java/com/fuint/utils/BeanToMapUtil.java

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+package com.fuint.utils;
+
+import java.beans.BeanInfo;
+import java.beans.IntrospectionException;
+import java.beans.Introspector;
+import java.beans.PropertyDescriptor;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * Created by FSQ
+ * CopyRight https://www.fuint.cn
+ */
+public class BeanToMapUtil {
+    /**
+     * 将一个 Map 对象转化为一个 JavaBean
+     *
+     * @param type 要转化的类型
+     * @param map  包含属性值的 map
+     * @return 转化出来的 JavaBean 对象
+     * @throws IntrospectionException    如果分析类属性失败
+     * @throws IllegalAccessException    如果实例化 JavaBean 失败
+     * @throws InstantiationException    如果实例化 JavaBean 失败
+     * @throws InvocationTargetException 如果调用属性的 setter 方法失败
+     */
+    public static Object convertMap(Class type, Map map)
+            throws IntrospectionException, IllegalAccessException,
+            InstantiationException, InvocationTargetException {
+        BeanInfo beanInfo = Introspector.getBeanInfo(type); // 获取类属性
+        Object obj = type.newInstance(); // 创建 JavaBean 对象
+
+        // 给 JavaBean 对象的属性赋值
+        PropertyDescriptor[] propertyDescriptors = beanInfo.getPropertyDescriptors();
+        for (int i = 0; i < propertyDescriptors.length; i++) {
+            PropertyDescriptor descriptor = propertyDescriptors[i];
+            String propertyName = descriptor.getName();
+
+            if (map.containsKey(propertyName)) {
+                // 下面一句可以 try 起来，这样当一个属性赋值失败的时候就不会影响其他属性赋值。
+                Object value = map.get(propertyName);
+
+                Object[] args = new Object[1];
+                args[0] = value;
+
+                descriptor.getWriteMethod().invoke(obj, args);
+            }
+        }
+        return obj;
+    }
+
+    /**
+     * 将一个 JavaBean 对象转化为一个  Map
+     *
+     * @param bean 要转化的JavaBean 对象
+     * @return 转化出来的  Map 对象
+     * @throws IntrospectionException    如果分析类属性失败
+     * @throws IllegalAccessException    如果实例化 JavaBean 失败
+     * @throws InvocationTargetException 如果调用属性的 setter 方法失败
+     */
+    public static Map convertBean(Object bean) throws IntrospectionException, IllegalAccessException, InvocationTargetException {
+        Class type = bean.getClass();
+        Map returnMap = new HashMap();
+        BeanInfo beanInfo = Introspector.getBeanInfo(type);
+
+        PropertyDescriptor[] propertyDescriptors = beanInfo.getPropertyDescriptors();
+        for (int i = 0; i < propertyDescriptors.length; i++) {
+            PropertyDescriptor descriptor = propertyDescriptors[i];
+            String propertyName = descriptor.getName();
+            if (!propertyName.equals("class")) {
+                Method readMethod = descriptor.getReadMethod();
+                Object result = readMethod.invoke(bean, new Object[0]);
+                if (result != null) {
+                    returnMap.put(propertyName, result);
+                } else {
+                    returnMap.put(propertyName, "");
+                }
+            }
+        }
+        return returnMap;
+    }
+}