通过 CsvListWriter 读写.csv文件辅助类

package cn.gov.cnis.db;

import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.supercsv.io.CsvListReader;
import org.supercsv.io.CsvListWriter;
import org.supercsv.prefs.CsvPreference;

public class OperateCsv {

/**
* 读取csv文件(不带头部)
*
* @param String filePath
* @return csv文件组装成list
* @throws IOException
*/
static public List<String[]> getContentFromFile(String filePath) throws IOException {
File file = new File(filePath);
List<String[]> content = new ArrayList<String[]>();
CsvListReader reader = new CsvListReader(new FileReader (file), CsvPreference.EXCEL_PREFERENCE);
reader.getCSVHeader(true);// 去除头部字段声明
List<String> line = new ArrayList<String>();
while ((line = reader.read()) != null) {
content.add(line.toArray(new String[] {}));
}
return content;
}

/**
* 读取csv文件(带头部)
*
* @param String filePath
* @return csv文件组装成list
* @throws IOException
*/
static public List<String[]> getDetailFromFile(String filePath) throws IOException {
File file = new File(filePath);
List<String[]> content = new ArrayList<String[]>();
CsvListReader reader = new CsvListReader(new FileReader(file), CsvPreference.EXCEL_PREFERENCE);
String[] header = reader.getCSVHeader(true);
content.add(header);
List<String> line = new ArrayList<String>();
while ((line = reader.read()) != null) {
content.add(line.toArray(new String[] {}));
}
return content;
}

/**
* 读取csv文件的头部
*
* @param String filePath
* @return csv文件的头部
* @throws IOException
*/
static public String[] getHeaderFromFile(String filePath) throws IOException {
File file = new File(filePath);
CsvListReader reader = new CsvListReader(new FileReader (file), CsvPreference.EXCEL_PREFERENCE);
return reader.getCSVHeader(true);
}

/**
* 写入csv文件
*
* @param String filePath
* @param header
*            头部
* @param content
*            内容
* @throws IOException
*/
static public void writeToCsv(String filePath, String[] header, List<String[]> content)
throws IOException {
File file = new File(filePath);
CsvListWriter writer = new CsvListWriter(new FileWriter(file), CsvPreference.EXCEL_PREFERENCE);
writer.writeHeader(header);
for (String[] str : content) {
writer.write(str);
}
writer.close();
}

/**
* 写入csv文件
*
* @param String filePath
* @param content
*            内容
* @throws IOException
*/
static public void writeContentToCsv(String filePath, List<String[]> content)
throws IOException {
File file = new File(filePath);
CsvListWriter writer = new CsvListWriter(new FileWriter(file),CsvPreference.EXCEL_PREFERENCE);
for (String[] str : content) {
writer.write(str);
}
writer.close();
}

/**
* 写入csv文件(头部)
*
* @param String filePath
* @param content
*            内容
* @throws IOException
*/
static public void writeHeaderToCsv(String filePath, String[] header) throws IOException {
File file = new File(filePath);
CsvListWriter writer = new CsvListWriter(new FileWriter(file),CsvPreference.EXCEL_PREFERENCE);
writer.writeHeader(header);
writer.close();
}

public static void main(String[] args) throws IOException {
OperateCsv operateCsv = new OperateCsv();
String file = "e:/Projects/Java/luke-3.4.0_1/AVDDOCS/export/73602.csv";
List<String[]> content = operateCsv.getDetailFromFile(file);
String[] header = operateCsv.getHeaderFromFile(file);
for (String[] str : content) {
for (int i = 0; i < str.length; i++) {

System.out.println(str[i] + "  " + str[i + 1] + "  "
+ str[i + 2] + "  " + str[i + 3]);
i = i + 4;

// System.out.println(str[i]);

}
String file1 = "D:/2.csv";
operateCsv.writeToCsv(file1, header, content);
operateCsv.writeHeaderToCsv(file1, header);
operateCsv.writeContentToCsv(file1, content);
}
}
}