Java生成生成CSV文件实例详解文件实例详解
主要介绍了Java生成CSV文件的方法,很实用的功能,需要的朋友可以参考下
本文实例主要讲述了Java生成CSV文件的方法,具体实现步骤如下:
1、新建、新建CSVUtils.java文件:文件:
package com.saicfc.pmpf.internal.manage.utils;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.beanutils.BeanUtils;
/**
* 文件操作
*/
public class CSVUtils {
/**
* 生成为CVS文件
* @param exportData
* 源数据List
* @param map
* csv文件的列表头map
* @param outPutPath
* 文件路径
* @param fileName
* 文件名称
* @return
*/
@SuppressWarnings("rawtypes")
public static File createCSVFile(List exportData, LinkedHashMap map, String outPutPath,
String fileName) {
File csvFile = null;
BufferedWriter csvFileOutputStream = null;
try {
File file = new File(outPutPath);
if (!file.exists()) {
file.mkdir();
}
//定义文件名格式并创建
csvFile = File.createTempFile(fileName, ".csv", new File(outPutPath));
System.out.println("csvFile:" + csvFile);
// UTF-8使正确读取分隔符","
csvFileOutputStream = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(
csvFile), "UTF-8"), 1024);
System.out.println("csvFileOutputStream:" + csvFileOutputStream);
// 写入文件头部
for (Iterator propertyIterator = map.entrySet().iterator(); propertyIterator.hasNext();) {
java.util.Map.Entry propertyEntry = (java.util.Map.Entry) propertyIterator.next();
csvFileOutputStream
.write(""" + (String) propertyEntry.getValue() != null ? (String) propertyEntry
.getValue() : "" + """);
if (propertyIterator.hasNext()) {
csvFileOutputStream.write(",");
}
}
csvFileOutputStream.newLine();
// 写入文件内容
for (Iterator iterator = exportData.iterator(); iterator.hasNext();) {
Object row = (Object) iterator.next();
for (Iterator propertyIterator = map.entrySet().iterator(); propertyIterator
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