获取List中的泛型类型,创建对象,并且字段设置值
for (Field f : partPropType.getDeclaredFields()) { if ("accountPrincipalApproveList".equals(f.getName())) { f.setAccessible(true); List accountPrincipalApproveList = new ArrayList(); if(f.getType() == java.util.List.class){ // 如果是List类型,得到其Generic的类型 Type genericType = f.getGenericType(); if(genericType == null) continue; // 如果是泛型参数的类型 if(genericType instanceof ParameterizedType){ ParameterizedType pt = (ParameterizedType) genericType; //得到泛型里的class类型对象 Class<?> accountPrincipalApproveClazz = (Class<?>)pt.getActualTypeArguments()[0]; Object accountPrincipalApprove = accountPrincipalApproveClazz.newInstance(); PropertyDescriptor acctApproveIdPropertyDescriptor = new PropertyDescriptor("acctApproveId", accountPrincipalApproveClazz); acctApproveIdPropertyDescriptor.getWriteMethod().invoke(inputPartObject, "ACCOUNT_TYPE_NONE"); accountPrincipalApproveList.add(accountPrincipalApprove); } } f.set(inputPartObject,accountPrincipalApproveList); break; } }