com.jeesuite.common2.excel.helper.ExcelBeanHelper Maven / Gradle / Ivy
The newest version!
package com.jeesuite.common2.excel.helper;
import java.beans.BeanInfo;
import java.beans.IntrospectionException;
import java.beans.Introspector;
import java.beans.PropertyDescriptor;
import java.lang.reflect.Method;
import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import org.apache.commons.lang3.StringUtils;
import com.jeesuite.common2.excel.ExcelOperBaseException;
import com.jeesuite.common2.excel.annotation.TitleCell;
import com.jeesuite.common2.excel.model.ExcelMeta;
import com.jeesuite.common2.excel.model.TitleMeta;
public class ExcelBeanHelper {
private static Map> aliasPropertyDescriptorCache = new ConcurrentHashMap>();
private static Map titleCellBeanCache = new ConcurrentHashMap();
public static List setRowValues(Class clazz,List contents){
try {
Map pds = getAliasPropertyDescriptors(clazz);
List results = new ArrayList<>();
if(contents.isEmpty())return results;
String[] titles = getExcelMeta(clazz).getFinalTitles();
int titleRowCount = getExcelMeta(clazz).getTitleRowNum();
//解析内容标题内容为数组
List contentTitles = new ArrayList<>();
//第一行为sheet信息
for (int i = 1; i <= titleRowCount; i++) {
contentTitles.addAll(Arrays.asList(contents.get(i).split(ExcelValidator.FIELD_SPLIT)));
}
for (int i = 0; i < titles.length; i++) {
if(titleRowCount == 1){
if(!StringUtils.equals(titles[i], contentTitles.get(i)))throw new ExcelOperBaseException("格式错误，没有找到列["+titles[i] + "]");
}else{
if(!contentTitles.contains(titles[i]))throw new ExcelOperBaseException("格式错误，没有找到列["+titles[i] + "]");
}
}
String[] vals = null;
for (int i = titleRowCount + 1; i < contents.size(); i++) {
String line = contents.get(i);
if(line.startsWith(ExcelValidator.SHEET_NAME_PREFIX)){
throw new ExcelOperBaseException("模板错误(暂不支持多个sheet)");
}
T instance = clazz.newInstance();
vals = line.split(ExcelValidator.FIELD_SPLIT);
boolean anyColumnNotEmpty = false;
inner:for (int j = 0; j < titles.length; j++) {
if(vals.length < j + 1 )break inner;
anyColumnNotEmpty = anyColumnNotEmpty || StringUtils.isNotBlank(vals[j]);
PropertyDescriptor propertyDescriptor = pds.get(clearWrapper(titles[j]).trim());
if(propertyDescriptor != null && vals[j] != null){
try {
Object rawValue = rawValue(vals[j],propertyDescriptor.getPropertyType());
propertyDescriptor.getWriteMethod().invoke(instance, rawValue);
} catch (Exception e) {
// TODO: handle exception
}
}
}
if(anyColumnNotEmpty){
results.add(instance);
}
}
return results;
} catch (Exception e) {
if(e instanceof ExcelOperBaseException)throw (ExcelOperBaseException)e;
throw new BeanConverterException(e);
}
}
public static List beanToExcelValueArrays(List datas,Class clazz){
Map pds = getAliasPropertyDescriptors(clazz);
List result = new ArrayList<>(datas.size() + 1);
String[] titles = getExcelMeta(clazz).getFinalTitles();
if(datas == null || datas.isEmpty())return result;
int valNums = titles.length;
Object[] valArrs;
for (T e : datas) {
valArrs = new Object[valNums];
try {
for (int i = 0; i < titles.length; i++) {
PropertyDescriptor descriptor = pds.get(titles[i]);
if(descriptor != null){
valArrs[i] = descriptor.getReadMethod().invoke(e);
}
}
result.add(valArrs);
} catch (Exception e2) {
throw new BeanConverterException(e2);
}
}
return result;
}
public static ExcelMeta getExcelMeta(Class clazz){
String key = clazz.getCanonicalName();
if(!titleCellBeanCache.containsKey(key)){
getAliasPropertyDescriptors(clazz);
}
return titleCellBeanCache.get(key);
}
private static Object rawValue(String value,Class propertyType){
value = clearWrapper(value);
Object result = value;
if (propertyType == String.class) {
return result;
}else if (propertyType == BigDecimal.class) {
result = new BigDecimal(value.replaceAll(",", ""));
} else if (propertyType == byte.class || propertyType == Byte.class) {
result = Byte.valueOf(value);
} else if (propertyType == short.class || propertyType == Short.class) {
result = Short.valueOf(value.replaceAll(",", ""));
} else if (propertyType == int.class || propertyType == Integer.class) {
result = Integer.parseInt(value.replaceAll(",", ""));
} else if (propertyType == double.class || propertyType == Double.class) {
result = Double.valueOf(value.replaceAll(",", ""));
}else if (propertyType == float.class || propertyType == Float.class) {
result = Float.parseFloat(value.replaceAll(",", ""));
} else if (propertyType == Date.class) {
if(value != null){
//TODO
}
} else if (propertyType == boolean.class || propertyType == Boolean.class) {
result = Boolean.parseBoolean(value);
}
return result;
}
private static Map getAliasPropertyDescriptors(Class clazz) {
try {
String canonicalName = clazz.getCanonicalName();
Map map = aliasPropertyDescriptorCache.get(canonicalName);
if (map == null) {
doCacheClass(clazz, canonicalName);
map = aliasPropertyDescriptorCache.get(canonicalName);
}
return map;
} catch (Exception e) {
throw new RuntimeException(e);
}
}
/**
* @param clazz
* @param canonicalName
* @return
* @throws IntrospectionException
*/
private synchronized static void doCacheClass(Class clazz, String canonicalName)
throws Exception {
if (aliasPropertyDescriptorCache.containsKey(canonicalName))
return;
Map map = new HashMap<>();
Map aliasMap = new HashMap<>();
List titleMetas = new ArrayList<>();
BeanInfo srcBeanInfo = Introspector.getBeanInfo(clazz);
PropertyDescriptor[] descriptors = srcBeanInfo.getPropertyDescriptors();
Map parentMap = new HashMap<>();
int maxRow = 1;
for (PropertyDescriptor descriptor : descriptors) {
String name = descriptor.getName();
if("class".equals(name))continue;
Method readMethod = descriptor.getReadMethod();
Method writeMethod = descriptor.getWriteMethod();
if (readMethod == null)
try {
readMethod = clazz.getMethod("get" + name.substring(0, 1).toUpperCase() + name.substring(1));
descriptor.setReadMethod(readMethod);
} catch (NoSuchMethodException | SecurityException e) {
}
if (writeMethod == null)
try {
writeMethod = clazz.getMethod("set" + name.substring(0, 1).toUpperCase() + name.substring(1),
descriptor.getPropertyType());
descriptor.setWriteMethod(writeMethod);
} catch (NoSuchMethodException | SecurityException e) {
}
if (readMethod != null || writeMethod != null) {
map.put(descriptor.getName(), descriptor);
//
TitleCell annotation = null;
try {
annotation = clazz.getDeclaredField(name).getAnnotation(TitleCell.class);
} catch (NoSuchFieldException e) {
annotation = clazz.getSuperclass().getDeclaredField(name).getAnnotation(TitleCell.class);
}
if(annotation != null){
aliasMap.put(annotation.name().trim(), descriptor);
TitleMeta cell = new TitleMeta(annotation.name());
cell.setValueType(annotation.type());
if(StringUtils.isBlank(annotation.parentName())){
cell.setColumnIndex(annotation.column());
cell.setRowIndex(annotation.row());
titleMetas.add(cell);
}else{
TitleMeta cellParent = parentMap.get(annotation.parentName());
if(cellParent == null){
cellParent = new TitleMeta(annotation.parentName());
cellParent.setValueType(annotation.type());
cellParent.setColumnIndex(annotation.column());
parentMap.put(annotation.parentName(), cellParent);
titleMetas.add(cellParent);
}
cell.setColumnIndex(annotation.column());
cell.setRowIndex(annotation.row());
cellParent.addChildren(cell);
maxRow = annotation.row() > maxRow ? annotation.row() : maxRow;
}
}
}
}
ExcelMeta excelMeta = new ExcelMeta(clazz,titleMetas,maxRow);
titleCellBeanCache.put(canonicalName, excelMeta);
aliasPropertyDescriptorCache.put(canonicalName, aliasMap);
}
private static String clearWrapper(String orig){
return orig;
}
public static class BeanConverterException extends RuntimeException {
private static final long serialVersionUID = 152873897614690397L;
public BeanConverterException(Throwable cause) {
super(cause);
}
}
}