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fixed: can not create entity instance which with lombok @Data annotation

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开源海哥 2023-04-12 14:22:53 +08:00
parent 0ac039d316
commit 5697cdebf4
1 changed files with 29 additions and 6 deletions
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35
mybatis-flex-core/src/main/java/com/mybatisflex/core/util/ClassUtil.java
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@ -18,6 +18,7 @@ package com.mybatisflex.core.util;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.lang.reflect.Proxy;
import java.util.ArrayList;
import java.util.Arrays;
@ -70,13 +71,35 @@ public class ClassUtil {
public static <T> T newInstance(Class<T> clazz) {
try {
Constructor<T> constructor = clazz.getDeclaredConstructor();
return constructor.newInstance();
} catch (Exception e) {
e.printStackTrace();
}
Constructor<?> defaultConstructor = null;
Constructor<?> otherConstructor = null;
return null;
Constructor<?>[] declaredConstructors = clazz.getDeclaredConstructors();
for (Constructor<?> constructor : declaredConstructors) {
if (constructor.getParameterCount() == 0) {
defaultConstructor = constructor;
} else if (Modifier.isPublic(constructor.getModifiers())) {
otherConstructor = constructor;
}
}
if (defaultConstructor != null) {
return (T) defaultConstructor.newInstance();
} else if (otherConstructor != null) {
Class<?>[] parameterTypes = otherConstructor.getParameterTypes();
Object[] parameters = new Object[parameterTypes.length];
for (int i = 0; i < parameterTypes.length; i++) {
if (parameterTypes[i].isPrimitive()) {
parameters[i] = ConvertUtil.getPrimitiveDefaultValue(parameterTypes[i]);
} else {
parameters[i] = null;
}
}
return (T) otherConstructor.newInstance(parameters);
}
throw new IllegalArgumentException("the class \"" + clazz.getName() + "\" has no constructor.");
} catch (Exception e) {
throw new RuntimeException("Can not newInstance class: " + clazz.getName());
}
}