115 lines
3.4 KiB
115 lines
3.4 KiB
package ${basePackage}.frame.utils;
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import java.lang.reflect.Field;
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import java.lang.reflect.Method;
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import java.util.*;
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/**
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* ClassUtil
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*
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* @author wangbing
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* @version 0.0.1
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* @since 2017-01-01
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*/
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public class ClassUtil {
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/**
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* 获取模板类所有字段
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*
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* @param clazz 模板对象
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* @param parentFirst 是否关注父类的字段
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* @return
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*/
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public static Field[] getFields(Class clazz, boolean parentFirst) {
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Field[] fields = clazz.getDeclaredFields();
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if (parentFirst) {
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Field[] parentFields = getParentFields(clazz.getSuperclass());
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return concat(fields, parentFields);
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}
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return fields;
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}
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/**
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* 判断是不是集合的实现类
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*
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* @param clazz
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* @return
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*/
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public static boolean isCollection(Class<?> clazz) {
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return Collection.class.isAssignableFrom(clazz);
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}
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/**
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* 获取GET方法
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*
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* @param name 成员变量名
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* @param pojoClass POJO对象
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* @return 方法
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*/
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public static Method getMethod(String name, Class<?> pojoClass) throws RuntimeException {
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String getMethodName = "get" + StringUtil.upperFirstWord(name);
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try {
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return pojoClass.getMethod(getMethodName);
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} catch (Exception e) {
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getMethodName = "is" + StringUtil.upperFirstWord(name);
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try {
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return pojoClass.getMethod(getMethodName);
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} catch (NoSuchMethodException e1) {
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throw new RuntimeException("can not find[" + name + "]method");
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}
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}
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}
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/**
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* 获取SET方法
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*
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* @param name 成员变量名
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* @param pojoClass POJO对象
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* @return 方法
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*/
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public static Method setMethod(String name, Class<?> pojoClass, Class<?> type) {
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String setMethodName = "set" + StringUtil.upperFirstWord(name);
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try {
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return pojoClass.getMethod(setMethodName, type);
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} catch (Exception e) {
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return null;
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}
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}
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public static boolean isJavaClass(Field field) {
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Class<?> fieldType = field.getType();
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boolean isBaseClass = false;
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if (fieldType.isArray()) {
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isBaseClass = false;
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} else if (fieldType.isPrimitive() || fieldType.getPackage() == null
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|| fieldType.getPackage().getName().equals("java.lang")
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|| fieldType.getPackage().getName().equals("java.math")
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|| fieldType.getPackage().getName().equals("java.sql")
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|| fieldType.getPackage().getName().equals("java.util")) {
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isBaseClass = true;
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}
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return isBaseClass;
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}
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public static Field[] getFields(Class clazz) {
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return getFields(clazz, false);
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}
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private static Field[] getParentFields(Class parentClazz) {
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if (parentClazz != null) {
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Field[] fields = parentClazz.getDeclaredFields();
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Field[] parentFields = getParentFields(parentClazz.getSuperclass());
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return concat(fields, parentFields);
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}
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return new Field[0];
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}
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private static Field[] concat(Field[] f1, Field[] f2) {
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Field[] fields = new Field[f1.length + f2.length];
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System.arraycopy(f1, 0, fields, 0, f1.length);
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System.arraycopy(f2, 0, fields, f1.length, f2.length);
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return fields;
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}
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}
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