com.alibaba.excel.util.ClassUtils Maven / Gradle / Ivy
package com.alibaba.excel.util;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.TreeMap;
import java.util.concurrent.ConcurrentHashMap;
import com.alibaba.excel.annotation.ExcelIgnore;
import com.alibaba.excel.annotation.ExcelIgnoreUnannotated;
import com.alibaba.excel.annotation.ExcelProperty;
import com.alibaba.excel.annotation.format.DateTimeFormat;
import com.alibaba.excel.annotation.format.NumberFormat;
import com.alibaba.excel.annotation.write.style.ContentFontStyle;
import com.alibaba.excel.annotation.write.style.ContentStyle;
import com.alibaba.excel.converters.AutoConverter;
import com.alibaba.excel.converters.Converter;
import com.alibaba.excel.exception.ExcelCommonException;
import com.alibaba.excel.metadata.Holder;
import com.alibaba.excel.metadata.property.DateTimeFormatProperty;
import com.alibaba.excel.metadata.property.ExcelContentProperty;
import com.alibaba.excel.metadata.property.FontProperty;
import com.alibaba.excel.metadata.property.NumberFormatProperty;
import com.alibaba.excel.metadata.property.StyleProperty;
import com.alibaba.excel.write.metadata.holder.WriteHolder;
import lombok.AllArgsConstructor;
import lombok.EqualsAndHashCode;
import lombok.Getter;
import lombok.Setter;
import org.springframework.cglib.beans.BeanMap;
/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* @author Apache Software Foundation (ASF)
*/
public class ClassUtils {
public static final Map, FieldCache> FIELD_CACHE = new ConcurrentHashMap<>();
/**
* The cache configuration information for each of the class
*/
public static final Map, Map> CLASS_CONTENT_CACHE
= new ConcurrentHashMap<>();
/**
* The cache configuration information for each of the class
*/
public static final Map CONTENT_CACHE = new ConcurrentHashMap<>();
/**
* Calculate the configuration information for the class
*
* @param dataMap
* @param headClazz
* @param fieldName
* @return
*/
public static ExcelContentProperty declaredExcelContentProperty(Map dataMap, Class headClazz,
String fieldName) {
Class clazz = null;
if (dataMap instanceof BeanMap) {
Object bean = ((BeanMap)dataMap).getBean();
if (bean != null) {
clazz = bean.getClass();
}
}
return getExcelContentProperty(clazz, headClazz, fieldName);
}
private static ExcelContentProperty getExcelContentProperty(Class clazz, Class headClass, String fieldName) {
return CONTENT_CACHE.computeIfAbsent(buildKey(clazz, headClass, fieldName), key -> {
ExcelContentProperty excelContentProperty = Optional.ofNullable(declaredFieldContentMap(clazz))
.map(map -> map.get(fieldName))
.orElse(null);
ExcelContentProperty headExcelContentProperty = Optional.ofNullable(declaredFieldContentMap(headClass))
.map(map -> map.get(fieldName))
.orElse(null);
ExcelContentProperty combineExcelContentProperty = new ExcelContentProperty();
combineExcelContentProperty(combineExcelContentProperty, headExcelContentProperty);
if (clazz != headClass) {
combineExcelContentProperty(combineExcelContentProperty, excelContentProperty);
}
return combineExcelContentProperty;
});
}
public static void combineExcelContentProperty(ExcelContentProperty combineExcelContentProperty,
ExcelContentProperty excelContentProperty) {
if (excelContentProperty == null) {
return;
}
if (excelContentProperty.getField() != null) {
combineExcelContentProperty.setField(excelContentProperty.getField());
}
if (excelContentProperty.getConverter() != null) {
combineExcelContentProperty.setConverter(excelContentProperty.getConverter());
}
if (excelContentProperty.getDateTimeFormatProperty() != null) {
combineExcelContentProperty.setDateTimeFormatProperty(excelContentProperty.getDateTimeFormatProperty());
}
if (excelContentProperty.getNumberFormatProperty() != null) {
combineExcelContentProperty.setNumberFormatProperty(excelContentProperty.getNumberFormatProperty());
}
if (excelContentProperty.getContentStyleProperty() != null) {
combineExcelContentProperty.setContentStyleProperty(excelContentProperty.getContentStyleProperty());
}
if (excelContentProperty.getContentFontProperty() != null) {
combineExcelContentProperty.setContentFontProperty(excelContentProperty.getContentFontProperty());
}
}
private static ContentPropertyKey buildKey(Class clazz, Class headClass, String fieldName) {
return new ContentPropertyKey(clazz, headClass, fieldName);
}
private static Map declaredFieldContentMap(Class clazz) {
if (clazz == null) {
return null;
}
return CLASS_CONTENT_CACHE.computeIfAbsent(clazz, key -> {
List tempFieldList = new ArrayList<>();
Class tempClass = clazz;
while (tempClass != null) {
Collections.addAll(tempFieldList, tempClass.getDeclaredFields());
// Get the parent class and give it to yourself
tempClass = tempClass.getSuperclass();
}
ContentStyle parentContentStyle = clazz.getAnnotation(ContentStyle.class);
ContentFontStyle parentContentFontStyle = clazz.getAnnotation(ContentFontStyle.class);
Map fieldContentMap = MapUtils.newHashMapWithExpectedSize(
tempFieldList.size());
for (Field field : tempFieldList) {
ExcelContentProperty excelContentProperty = new ExcelContentProperty();
excelContentProperty.setField(field);
ExcelProperty excelProperty = field.getAnnotation(ExcelProperty.class);
if (excelProperty != null) {
Class> convertClazz = excelProperty.converter();
if (convertClazz != AutoConverter.class) {
try {
Converter converter = convertClazz.getDeclaredConstructor().newInstance();
excelContentProperty.setConverter(converter);
} catch (Exception e) {
throw new ExcelCommonException(
"Can not instance custom converter:" + convertClazz.getName());
}
}
}
ContentStyle contentStyle = field.getAnnotation(ContentStyle.class);
if (contentStyle == null) {
contentStyle = parentContentStyle;
}
excelContentProperty.setContentStyleProperty(StyleProperty.build(contentStyle));
ContentFontStyle contentFontStyle = field.getAnnotation(ContentFontStyle.class);
if (contentFontStyle == null) {
contentFontStyle = parentContentFontStyle;
}
excelContentProperty.setContentFontProperty(FontProperty.build(contentFontStyle));
excelContentProperty.setDateTimeFormatProperty(
DateTimeFormatProperty.build(field.getAnnotation(DateTimeFormat.class)));
excelContentProperty.setNumberFormatProperty(
NumberFormatProperty.build(field.getAnnotation(NumberFormat.class)));
fieldContentMap.put(field.getName(), excelContentProperty);
}
return fieldContentMap;
});
}
/**
* Parsing field in the class
*
* @param clazz Need to parse the class
* @param sortedAllFieldMap Complete the map of sorts
* @param indexFieldMap Use the index to sort fields
* @param ignoreMap You want to ignore field map
* @param needIgnore If you want to ignore fields need to ignore
* @param holder holder
*/
public static void declaredFields(Class clazz, Map sortedAllFieldMap,
Map indexFieldMap, Map ignoreMap, Boolean needIgnore, Holder holder) {
FieldCache fieldCache = declaredFields(clazz);
if (fieldCache == null) {
return;
}
if (ignoreMap != null) {
ignoreMap.putAll(fieldCache.getIgnoreMap());
}
Map tempIndexFieldMap = indexFieldMap;
if (tempIndexFieldMap == null) {
tempIndexFieldMap = MapUtils.newTreeMap();
}
tempIndexFieldMap.putAll(fieldCache.getIndexFieldMap());
Map originSortedAllFieldMap = fieldCache.getSortedAllFieldMap();
if (!needIgnore) {
sortedAllFieldMap.putAll(originSortedAllFieldMap);
return;
}
int index = 0;
for (Map.Entry entry : originSortedAllFieldMap.entrySet()) {
Integer key = entry.getKey();
Field field = entry.getValue();
// The current field needs to be ignored
if (((WriteHolder)holder).ignore(entry.getValue().getName(), entry.getKey())) {
if (ignoreMap != null) {
ignoreMap.put(field.getName(), field);
}
tempIndexFieldMap.remove(index);
} else {
// Mandatory sorted fields
if (tempIndexFieldMap.containsKey(key)) {
sortedAllFieldMap.put(key, field);
} else {
// Need to reorder automatically
// Check whether the current key is already in use
while (sortedAllFieldMap.containsKey(index)) {
index++;
}
sortedAllFieldMap.put(index++, field);
}
}
}
}
public static void declaredFields(Class clazz, Map sortedAllFieldMap, Boolean needIgnore,
WriteHolder writeHolder) {
declaredFields(clazz, sortedAllFieldMap, null, null, needIgnore, writeHolder);
}
private static FieldCache declaredFields(Class clazz) {
if (clazz == null) {
return null;
}
return FIELD_CACHE.computeIfAbsent(clazz, key -> {
List tempFieldList = new ArrayList<>();
Class tempClass = clazz;
// When the parent class is null, it indicates that the parent class (Object class) has reached the top
// level.
while (tempClass != null) {
Collections.addAll(tempFieldList, tempClass.getDeclaredFields());
// Get the parent class and give it to yourself
tempClass = tempClass.getSuperclass();
}
// Screening of field
Map> orderFieldMap = new TreeMap>();
Map indexFieldMap = new TreeMap();
Map ignoreMap = new HashMap(16);
ExcelIgnoreUnannotated excelIgnoreUnannotated = clazz.getAnnotation(ExcelIgnoreUnannotated.class);
for (Field field : tempFieldList) {
declaredOneField(field, orderFieldMap, indexFieldMap, ignoreMap, excelIgnoreUnannotated);
}
return new FieldCache(buildSortedAllFieldMap(orderFieldMap, indexFieldMap), indexFieldMap, ignoreMap);
});
}
private static Map buildSortedAllFieldMap(Map> orderFieldMap,
Map indexFieldMap) {
Map sortedAllFieldMap = new HashMap(
(orderFieldMap.size() + indexFieldMap.size()) * 4 / 3 + 1);
Map tempIndexFieldMap = new HashMap(indexFieldMap);
int index = 0;
for (List fieldList : orderFieldMap.values()) {
for (Field field : fieldList) {
while (tempIndexFieldMap.containsKey(index)) {
sortedAllFieldMap.put(index, tempIndexFieldMap.get(index));
tempIndexFieldMap.remove(index);
index++;
}
sortedAllFieldMap.put(index, field);
index++;
}
}
sortedAllFieldMap.putAll(tempIndexFieldMap);
return sortedAllFieldMap;
}
private static void declaredOneField(Field field, Map> orderFieldMap,
Map indexFieldMap, Map ignoreMap,
ExcelIgnoreUnannotated excelIgnoreUnannotated) {
ExcelIgnore excelIgnore = field.getAnnotation(ExcelIgnore.class);
if (excelIgnore != null) {
ignoreMap.put(field.getName(), field);
return;
}
ExcelProperty excelProperty = field.getAnnotation(ExcelProperty.class);
boolean noExcelProperty = excelProperty == null && excelIgnoreUnannotated != null;
if (noExcelProperty) {
ignoreMap.put(field.getName(), field);
return;
}
boolean isStaticFinalOrTransient =
(Modifier.isStatic(field.getModifiers()) && Modifier.isFinal(field.getModifiers()))
|| Modifier.isTransient(field.getModifiers());
if (excelProperty == null && isStaticFinalOrTransient) {
ignoreMap.put(field.getName(), field);
return;
}
if (excelProperty != null && excelProperty.index() >= 0) {
if (indexFieldMap.containsKey(excelProperty.index())) {
throw new ExcelCommonException("The index of '" + indexFieldMap.get(excelProperty.index()).getName()
+ "' and '" + field.getName() + "' must be inconsistent");
}
indexFieldMap.put(excelProperty.index(), field);
return;
}
int order = Integer.MAX_VALUE;
if (excelProperty != null) {
order = excelProperty.order();
}
List orderFieldList = orderFieldMap.computeIfAbsent(order, key -> ListUtils.newArrayList());
orderFieldList.add(field);
}
private static class FieldCache {
private final Map sortedAllFieldMap;
private final Map indexFieldMap;
private final Map ignoreMap;
public FieldCache(Map sortedAllFieldMap, Map indexFieldMap,
Map ignoreMap) {
this.sortedAllFieldMap = sortedAllFieldMap;
this.indexFieldMap = indexFieldMap;
this.ignoreMap = ignoreMap;
}
public Map getSortedAllFieldMap() {
return sortedAllFieldMap;
}
public Map getIndexFieldMap() {
return indexFieldMap;
}
public Map getIgnoreMap() {
return ignoreMap;
}
}
/**
* Gets a {@code List} of all interfaces implemented by the given
* class and its superclasses.
*
* The order is determined by looking through each interface in turn as
* declared in the source file and following its hierarchy up. Then each
* superclass is considered in the same way. Later duplicates are ignored,
* so the order is maintained.
*
* @param cls the class to look up, may be {@code null}
* @return the {@code List} of interfaces in order,
* {@code null} if null input
*/
public static List> getAllInterfaces(final Class cls) {
if (cls == null) {
return null;
}
final LinkedHashSet> interfacesFound = new LinkedHashSet<>();
getAllInterfaces(cls, interfacesFound);
return new ArrayList<>(interfacesFound);
}
/**
* Gets the interfaces for the specified class.
*
* @param cls the class to look up, may be {@code null}
* @param interfacesFound the {@code Set} of interfaces for the class
*/
private static void getAllInterfaces(Class cls, final HashSet> interfacesFound) {
while (cls != null) {
final Class[] interfaces = cls.getInterfaces();
for (final Class i : interfaces) {
if (interfacesFound.add(i)) {
getAllInterfaces(i, interfacesFound);
}
}
cls = cls.getSuperclass();
}
}
@Getter
@Setter
@EqualsAndHashCode
@AllArgsConstructor
public static class ContentPropertyKey {
private Class clazz;
private Class headClass;
private String fieldName;
}
}
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