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feilong is a suite of core and expanded libraries that include utility classes, http, excel,cvs, io classes, and much much more.
/*
* Copyright (C) 2008 feilong
*
* Licensed 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.
*/
package com.feilong.excel;
import static com.feilong.core.Validator.isNullOrEmpty;
import static com.feilong.core.bean.ConvertUtil.toArray;
import static com.feilong.core.bean.ConvertUtil.toList;
import static com.feilong.core.date.DateUtil.formatDuration;
import static com.feilong.core.date.DateUtil.nowTimestamp;
import static com.feilong.core.lang.ObjectUtil.defaultIfNullOrEmpty;
import static com.feilong.core.lang.StringUtil.EMPTY;
import static com.feilong.core.lang.SystemUtil.USER_HOME;
import static com.feilong.core.util.CollectionsUtil.size;
import static com.feilong.core.util.MapUtil.newLinkedHashMap;
import static java.util.Collections.emptyMap;
import java.io.OutputStream;
import java.util.Collection;
import java.util.Date;
import java.util.List;
import java.util.Map;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.feilong.core.Validate;
import com.feilong.core.bean.ConvertUtil;
import com.feilong.core.lang.ClassUtil;
import com.feilong.excel.definition.ExcelSheet;
import com.feilong.excel.util.SheetNamesUtil;
import com.feilong.io.FileUtil;
import com.feilong.io.FilenameUtil;
import com.feilong.json.JsonUtil;
import com.feilong.tools.slf4j.Slf4jUtil;
/**
* 进行 excel 输出的工具类.
*
* @author feilong
* @since 1.13.0
*/
@SuppressWarnings("squid:S1192") //String literals should not be duplicated
public class ExcelWriteUtil{
/** The Constant LOGGER. */
private static final Logger LOGGER = LoggerFactory.getLogger(ExcelWriteUtil.class);
//---------------------------------------------------------------
/** Don't let anyone instantiate this class. */
private ExcelWriteUtil(){
//AssertionError不是必须的. 但它可以避免不小心在类的内部调用构造器. 保证该类在任何情况下都不会被实例化.
//see 《Effective Java》 2nd
throw new AssertionError("No " + getClass().getName() + " instances for you!");
}
//---------------------------------------------------------------
/**
* Write.
*
* @param templateLocation
* excel模板location,
*
*
* - 支持fully qualified URLs(完全合格的url),比如 "file:/Users/feilong/workspace/excel/TradeData/TradeData-list-export.xlsx".
* - 支持classpath pseudo-URLs(伪url), 比如 "classpath:excel/TradeData/TradeData-list-export.xlsx".
* - 支持relative file paths(相对路径), 比如 "WEB-INF/TradeData-list-export.xlsx".
*
* @param sheetDefinitionLocation
* xml sheet相关配置文件, 如 sheets/train-course.xml,基于class path路径
* @param sheetName
* the sheet
* @param beans
* the beans
* @param outputFileName
* 输出文件名字(全路径),
* 如果是null,默认输出地址是 USER_HOME +/feilong/excel/{sheetNames}{nowTimestamp()}.{FilenameUtil.getExtension(templateLocation)}
* @return the string
*/
public static String write(
String templateLocation,
String sheetDefinitionLocation,
String sheetName,
Map beans,
String outputFileName){
String[] sheetNames = null == sheetName ? null : toArray(sheetName);
return write(templateLocation, sheetDefinitionLocation, sheetNames, beans, outputFileName);
}
/**
* Write.
*
* @param templateLocation
* excel模板location,
*
*
* - 支持fully qualified URLs(完全合格的url),比如 "file:/Users/feilong/workspace/excel/TradeData/TradeData-list-export.xlsx".
* - 支持classpath pseudo-URLs(伪url), 比如 "classpath:excel/TradeData/TradeData-list-export.xlsx".
* - 支持relative file paths(相对路径), 比如 "WEB-INF/TradeData-list-export.xlsx".
*
* @param sheetDefinitionLocation
* xml sheet相关配置文件, 如 sheets/train-course.xml,基于class path路径
* @param sheetNames
* the sheet names
* @param beans
* the beans
* @param outputFileName
* 输出文件名字(全路径),
* 如果是null,默认输出地址是 USER_HOME +/feilong/excel/{sheetNames}{nowTimestamp()}.{FilenameUtil.getExtension(templateLocation)}
* @return 如果 templateLocation 是null,抛出 {@link NullPointerException}
* 如果 templateLocation 是blank,抛出 {@link IllegalArgumentException}
* 如果 sheetDefinitionLocation 是null,抛出 {@link NullPointerException}
* 如果 sheetDefinitionLocation 是blank,抛出 {@link IllegalArgumentException}
*/
public static String write(
String templateLocation,
String sheetDefinitionLocation,
String[] sheetNames,
Map beans,
String outputFileName){
Date beginDate = new Date();
Validate.notBlank(templateLocation, "templateLocation can't be blank!");
Validate.notBlank(sheetDefinitionLocation, "sheetDefinitionLocation can't be blank!");
Map sheetDefinitions = ExcelSheetMapBuilder.build(sheetDefinitionLocation);
String useOutputFileName = defaultIfNullOrEmpty(
outputFileName,
buildDefaultOutputFileName(templateLocation, sheetNames, sheetDefinitions));
if (LOGGER.isDebugEnabled()){
Map map = build(templateLocation, sheetDefinitionLocation, sheetNames, beans, useOutputFileName);
LOGGER.debug("will write excel,params info:[{}]", JsonUtil.format(map));
}
//---------------------------------------------------------------
OutputStream outputStream = FileUtil.getFileOutputStream(useOutputFileName);
Validate.notNull(outputStream, "outputStream can't be null!");
ExcelWriter excelWriter = buildExcelWriter(sheetDefinitions, sheetNames);
excelWriter.write(templateLocation, outputStream, beans);
//---------------------------------------------------------------
if (LOGGER.isInfoEnabled()){
Map map = buildMap(templateLocation, sheetDefinitionLocation, sheetNames, beans, useOutputFileName, beginDate);
LOGGER.info("write [SUCCESS],params info:[{}]", JsonUtil.format(map));
}
return useOutputFileName;
}
private static String buildDefaultOutputFileName(String templateLocation,String[] sheetNames,Map sheetDefinitions){
String pattern = USER_HOME + "/feilong/excel/{}{}.{}";
return Slf4jUtil.format(
pattern,
buildFileName(sheetNames, sheetDefinitions),
nowTimestamp(),
FilenameUtil.getExtension(templateLocation));
}
private static String buildFileName(String[] sheetNames,Map sheetDefinitions){
if (!SheetNamesUtil.isEmptyOrNullElement(sheetNames)){
return ConvertUtil.toString(sheetNames, " ");
}
if (sheetDefinitions.size() == 1){
List list = toList(sheetDefinitions.keySet());
String string = list.get(0);
return defaultIfNullOrEmpty(string, EMPTY);
}
return EMPTY;
}
/**
* Builds the excel writer.
*
* @param sheetDefinitionLocation
* the sheet definition location
* @param sheetNames
* the sheet names
* @return the excel writer
*/
private static ExcelWriter buildExcelWriter(Map sheetDefinitions,String[] sheetNames){
ExcelDefinition excelDefinition = ExcelDefinitionBuilder.build(sheetDefinitions, sheetNames);
return new DefaultExcelWriter(excelDefinition);
}
//---------------------------------------------------------------
/**
* To data info.
*
* @param beans
* the beans
* @return the map
*/
private static Map toDataInfo(Map beans){
if (isNullOrEmpty(beans)){
return emptyMap();
}
//---------------------------------------------------------------
Map map = newLinkedHashMap();
for (Map.Entry entry : beans.entrySet()){
String key = entry.getKey();
Object value = entry.getValue();
if (ClassUtil.isInstance(value, Collection.class)){
map.put(key + " size", size(value));
}
}
return map;
}
//---------------------------------------------------------------
/**
* Builds the map.
*
* @param templateLocation
* the template location
* @param sheetDefinitionLocation
* the sheet definition location
* @param sheetNames
* the sheet names
* @param beans
* the beans
* @param outputFileName
* the output file name
* @param beginDate
* the begin date
* @return the map
*/
private static Map buildMap(
String templateLocation,
String sheetDefinitionLocation,
String[] sheetNames,
Map beans,
String outputFileName,
Date beginDate){
Map map = build(templateLocation, sheetDefinitionLocation, sheetNames, beans, outputFileName);
map.put("useTime", formatDuration(beginDate));
return map;
}
/**
* Builds the.
*
* @param templateLocation
* the template location
* @param sheetDefinitionLocation
* the sheet definition location
* @param sheetNames
* the sheet names
* @param beans
* the beans
* @param outputFileName
* the output file name
* @return the map
* @since 3.0.0
*/
private static Map build(
String templateLocation,
String sheetDefinitionLocation,
String[] sheetNames,
Map beans,
String outputFileName){
Map map = newLinkedHashMap();
map.put("templateLocation", templateLocation);
map.put("sheetDefinitionLocation", sheetDefinitionLocation);
map.put("sheetName", sheetNames);
map.put("outputFileName", outputFileName);
map.put("data info", toDataInfo(beans));
return map;
}
}