同样地,我们需要一个方法将Map转换回User对象。 importjava.lang.reflect.Field;importjava.util.Map;publicclassMapToObjectConverter{publicstatic<T>TconvertMapToObject(Map<String,Object>map,Class<T>clazz){Tobj=null;try{// 创建一个新的对象实例obj=clazz.getDeclaredConstructor().newInstance();// 遍历Map...
public static Object mapToObject(Map<String, Object> map, Class<?> beanClass) throws Exception { if (map == null) return null; Object obj = beanClass.newInstance(); org.apache.commons.beanutils.BeanUtils.populate(obj, map); return obj; } public static Map<?, ?> objectToMap(Object obj)...
publicstaticObject mapToObject(Map<String, Object> map, Class<?> beanClass)throwsException { if(map ==null) returnnull; Object obj = beanClass.newInstance(); org.apache.commons.beanutils.BeanUtils.populate(obj, map); returnobj; } publicstaticMap<?, ?> objectToMap(Object obj) { if(obj =...
Map<String,Object> map=newHashMap<String, Object>(); BeanInfo beanInfo=Introspector.getBeanInfo(obj.getClass()); PropertyDescriptor[] propertyDescriptors=beanInfo.getPropertyDescriptors();for(PropertyDescriptor property : propertyDescriptors) { String key=property.getName();if(key.compareToIgnoreCase("clas...
java实现 Object和 Map之间的转换 3种⽅式 利⽤commons.BeanUtils实现Obj和Map之间转换，这种是最简单，也是最经常⽤的 public static Object mapToObject(Map<String, Object> map, Class<?> beanClass) throws Exception { if (map == null) return null;Object obj = beanClass.newInstance(); org....
Gson是另一种利用fromJson()方法将对象转换为JSON,然后在后续步骤中将JSON转换为HashMap的方式。 以下测试使用Gson将Java对象(employee)转换为一个Map: @Test public void givenJavaObject_whenUsingGson_thenConvertToMap() { Gson gson = new Gson(); ...
This tutorial provides several ways of converting a Java object to a Map in Java. 1. Reflection The traditional way of converting a Java object to a Map is through using the reflection mechanism provided by the JDK. Suppose we have a class called Student that holds 2 fields id and name....
Java里Map与Object相互转换的方法有哪些? 代码语言:javascript 代码运行次数:0 运行 AI代码解释 /** * 使用org.apache.commons.beanutils进行转换 */ class A { public static Object mapToObject(Map<String, Object> map, Class<?> beanClass) throws Exception { if (map == null) return null; Object ...
Java中将Object转换为Map的方法有以下几种:1. 使用Java反射机制:利用Java反射机制获取Object的所有字段,然后将字段名作为key,字段值作为value,存储到Map中。...
利用commons.BeanUtils实现Obj和Map之间转换,这种是最简单,也是最经常用的 public static Object mapToObject(Map map, Class beanClass) throws Exce...