Shulou(Shulou.com)06/01 Report--

今天小编给大家分享一下Map与JavaBean相互转换的工具类怎么使用的相关知识点，内容详细，逻辑清晰，相信大部分人都还太了解这方面的知识，所以分享这篇文章给大家参考一下，希望大家阅读完这篇文章后有所收获，下面我们一起来了解一下吧。

使用范围：JavaBean类对象的属性不能是数组、List、Set、Map

public class MapBeanUtil { /** * JavaBean转Map * @param obj * @return */ public static Map bean2Map(Object obj) { Map map = new LinkedHashMap(); Class clazz = obj.getClass(); for (Field field : clazz.getDeclaredFields()) { field.setAccessible(true); String fieldName = field.getName(); Object value = null; try { value = field.get(obj); } catch (IllegalAccessException e) { e.printStackTrace(); } if (value == null){ value = ""; } map.put(fieldName, value); } return map; } /** * Map转JavaBean * @param clazz * @param map * @param * @return */ public static T map2Bean(final Class clazz, final Map map) { if (map == null) { return null; } T res = null; try { res = clazz.getDeclaredConstructor().newInstance(); //获取到所有属性，不包括继承的属性 Field[] fields = clazz.getDeclaredFields(); for (Field field : fields) { //获取字段的修饰符 int mod = field.getModifiers(); if (Modifier.isStatic(mod) || Modifier.isFinal(mod)) { continue; } //设置对象的访问权限 field.setAccessible(true); //根据属性名称去map获取value if(map.containsKey(field.getName())) { //给对象赋值 field.set(res, map.get(field.getName())); } } } catch (Exception e) { e.printStackTrace(); } return res; } public static void main(String[] args) throws Exception { HashMap map = new HashMap(); map.put("id", 1001); map.put("username", "zhangsan"); map.put("password", "123456"); map.put("nickname", "张三"); map.put("email", "369950806@qq.com"); map.put("gender", true); map.put("birth", LocalDate.now()); map.put("avatar", "/aa/bb/ab.jpg"); map.put("role", "VIP"); map.put("status", (byte) 1); map.put("salt", "ldfkasjghweoiq324"); map.put("createTime", LocalDateTime.now()); map.put("updateTime", LocalDateTime.now()); User user = map2Bean(User.class, map); System.out.println(user); Map res = bean2Map(user); System.out.println(map); }}

User类的代码：

public class User { private Integer id; private String username; private String password; private String nickname; private String email; private Boolean gender; private LocalDate birth; private String avatar; private String role; private Byte status; private String salt; private LocalDateTime createTime; private LocalDateTime updateTime;}以上就是"Map与JavaBean相互转换的工具类怎么使用"这篇文章的所有内容，感谢各位的阅读!相信大家阅读完这篇文章都有很大的收获，小编每天都会为大家更新不同的知识，如果还想学习更多的知识，请关注行业资讯频道。

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