为了完美解决你的问题，特分享我自己的FileKit.java工具给你。
你只需要使用createFile方法，传入一行一个的List对象就可以生成了，目录不存在这些都判断了，只要你的目录可写就行了。
import mon.base.Throwables;
import lombok.extern.slf4j.Slf4j;
import java.io.*;
import java.util.ArrayList;
import java.util.List;
/**
* Created by jettykoo on 14-6-26 17:32.
* Copyright (c) , WeTeam Inc. All right reserved.
* WeTeam PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
* TEAM Zebra
*
* @version v0.0.1
*/
@Slf4j
public enum FileKit {
ice;
/**
* 遍历文件夹中文件
*
* @param filepath 文件路径
* @return 返回file［］ 数组
*/
public File[] getFileList(String filepath) {
File d = null;
File list[] = null;
/** 建立当前目录中文件的File对象 **/
try {
d = new File(filepath);
if (d.exists()) {
list = d.listFiles();
}
} catch (Exception e) {
log.debug("Other Exception", e);
}
/** 取得代表目录中所有文件的File对象数组 **/
return list;
}
/**
* 读取文本文件内容
*
* @param filePathAndName 带有完整绝对路径的文件名
* @param encoding 文本文件打开的编码方式
* @return 返回文本文件的内容
*/
public String readTxt(String filePathAndName, String encoding) throws IOException {
encoding = encoding.trim();
StringBuffer str = new StringBuffer("");
String st = "";
try {
FileInputStream fs = new FileInputStream(filePathAndName);
InputStreamReader isr;
if (encoding.equals("")) {
isr = new InputStreamReader(fs);
} else {
isr = new InputStreamReader(fs, encoding);
}
BufferedReader br = new BufferedReader(isr);
try {
String data = "";
while ((data = br.readLine()) != null) {
str.append(data);
}
} catch (Exception e) {
str.append(e.toString());
}
st = str.toString();
if (st != null && st.length() > 1)
st = st.substring(0, st.length() - 1);
} catch (IOException es) {
log.debug("IO Exception", es);
st = "";
}
return st;
}
/**
* 读取文本文件内容
*
* @param filePathAndName 带有完整绝对路径的文件名
* @param encoding 文本文件打开的编码方式
* @return 返回文本文件的内容
*/
public List readTxtList(String filePathAndName, String encoding) throws IOException {
encoding = encoding.trim();
List listStr = new ArrayList<>();
try {
FileInputStream fs = new FileInputStream(filePathAndName);
InputStreamReader isr;
if (encoding.equals("")) {
isr = new InputStreamReader(fs);
} else {
isr = new InputStreamReader(fs, encoding);
}
BufferedReader br = new BufferedReader(isr);
try {
String data = "";
while ((data = br.readLine()) != null) {
listStr.add(data);
}
} catch (Exception e) {
listStr.add(e.toString());
}
} catch (IOException es) {
log.debug("IO Exception", es);
}
return listStr;
}
/**
* 新建目录
*
* @param folderPath 目录
* @return 返回目录创建后的路径
*/
public Boolean createFolder(String folderPath) {
String dir = folderPath;
boolean bool = true;
try {
File myFilePath = new File(dir);
if (!myFilePath.exists()) {
bool = myFilePath.mkdirs();
}
} catch (Exception e) {
bool = false;
log.debug("Other Exception", e);
}
return bool;
}
/**
* 新建文件
*
* @param filePathAndName 文本文件完整绝对路径及文件名
* @return
*/
public Boolean createFile(String filePathAndName) {
boolean bool = true;
try {
File myFileAndName = new File(filePathAndName);
if (!myFileAndName.exists()) {
bool = myFileAndName.createNewFile();
}
} catch (IOException e) {
bool = false;
log.debug("IOException", e);
} catch (Exception e) {
bool = false;
log.debug("Other Exception", e);
} finally {
return bool;
}
}
/**
* 新建文件，并写入内容
*
* @param filePath 文本文件完整绝对路径
* @param fileName 文件名
* @param fileContent 文本文件内容
* @return
*/
public Boolean createFile(String filePath, String fileName, String fileContent) {
boolean bool = false;
try {
filePath = filePath.toString();
fileName = fileName.toString();
if (!filePath.endsWith("/")) {
filePath += "/";
}
String filePathAndName = filePath + fileName;
if (createFolder(filePath) && createFile(filePathAndName)) {
File myFilePath = new File(filePathAndName);
FileWriter resultFile = new FileWriter(myFilePath);
PrintWriter myFile = new PrintWriter(resultFile);
String strContent = fileContent;
myFile.println(strContent);
myFile.close();
resultFile.close();
bool = true;
}
} catch (IOException e) {
log.debug("IO Exception", e);
} catch (Exception e) {
log.debug("Other Exception", e);
} finally {
return bool;
}
}
/**
* 新建文件，并写入内容
*
* @param filePath 文本文件完整绝对路径
* @param fileName 文件名
* @param fileContentList 文本文件内容集合
* @return
*/
public Boolean createFile(String filePath, String fileName, List fileContentList) {
boolean bool = false;
try {
filePath = filePath.toString();
fileName = fileName.toString();
if (!filePath.endsWith("/")) {
filePath += "/";
}
String filePathAndName = filePath + fileName;
if (createFolder(filePath) && createFile(filePathAndName)) {
File myFilePath = new File(filePathAndName);
FileWriter resultFile = new FileWriter(myFilePath);
PrintWriter myFile = new PrintWriter(resultFile);
for (String strContent : fileContentList) {
myFile.println(strContent);
}
myFile.close();
resultFile.close();
bool = true;
}
} catch (IOException e) {
log.debug("IO Exception", e);
} catch (Exception e) {
log.debug("Other Exception", e);
} finally {
return bool;
}
}
/**
* 有编码方式的文件创建和内容写入
*
* @param filePath 文本文件完整绝对路径
* @param fileName 文件名
* @param fileContent 文本文件内容
* @param encoding 编码方式 例如 GBK 或者 UTF-8
* @return
*/
public Boolean createFile(String filePath, String fileName, String fileContent, String encoding) {
boolean bool = false;
try {
filePath = filePath.toString();
fileName = fileName.toString();
if (!filePath.endsWith("/")) {
filePath += "/";
}
String filePathAndName = filePath + fileName;
if (createFolder(filePath) && createFile(filePathAndName)) {
File myFilePath = new File(filePathAndName);
PrintWriter myFile = new PrintWriter(myFilePath, encoding);
String strContent = fileContent;
myFile.println(strContent);
myFile.close();
bool = true;
}
} catch (IOException e) {
log.debug("IO Exception", e);
} catch (Exception e) {
log.debug("Other Exception", e);
} finally {
return bool;
}
}
/**
* 删除文件
*
* @param filePathAndName 文本文件完整绝对路径及文件名
* @return Boolean 成功删除返回true遭遇异常返回false
*/
public Boolean delFile(String filePathAndName) {
boolean bea = false;
try {
String filePath = filePathAndName;
File myDelFile = new File(filePath);
if (myDelFile.exists()) {
myDelFile.delete();
bea = true;
} else {
bea = false;
}
} catch (Exception e) {
log.debug("Other Exception", e);
}
return bea;
}
/**
* 删除文件
*
* @param folderPath 文件夹完整绝对路径
* @return
*/
public void delFolder(String folderPath) {
try {
/**删除完里面所有内容**/
delAllFile(folderPath);
String filePath = folderPath;
filePath = filePath.toString();
File myFilePath = new File(filePath);
/**删除空文件夹**/
myFilePath.delete();
} catch (Exception e) {
log.debug("Other Exception", e);
}
}
/**
* 删除指定文件夹下所有文件
*
* @param path 文件夹完整绝对路径
* @return
*/
public Boolean delAllFile(String path) {
boolean bea = false;
File file = new File(path);
if (!file.exists()) {
return bea;
}
if (!file.isDirectory()) {
return bea;
}
String[] tempList = file.list();
File temp = null;
for (int i = 0; i < tempList.length; i++) {
if (path.endsWith(File.separator)) {
temp = new File(path + tempList[i]);
} else {
temp = new File(path + File.separator + tempList[i]);
}
if (temp.isFile()) {
temp.delete();
}
if (temp.isDirectory()) {
/**先删除文件夹里面的文件**/
delAllFile(path + "/" + tempList[i]);
/**再删除空文件**/
delFolder(path + "/" + tempList[i]);
bea = true;
}
}
return bea;
}
/**
* 复制单个文件
*
* @param oldPathFile 准备复制的文件源
* @param newPathFile 拷贝到新绝对路径带文件名
* @return
*/
public void copyFile(String oldPathFile, String newPathFile) {
try {
int bytesum = 0;
int byteread = 0;
File oldfile = new File(oldPathFile);
if (oldfile.exists()) {
InputStream inStream = new FileInputStream(oldPathFile);
FileOutputStream fs = new FileOutputStream(newPathFile);
byte[] buffer = new byte[1444];
while ((byteread = inStream.read(buffer)) != -1) {
bytesum += byteread;
fs.write(buffer, 0, byteread);
}
inStream.close();
}
} catch (IOException e) {
log.debug("IO Exception", e);
} catch (Exception e) {
log.debug("Other Exception", e);
}
}
/**
* 复制整个文件夹的内容
*
* @param oldPath 准备拷贝的目录
* @param newPath 指定绝对路径的新目录
* @return
*/
public void copyFolder(String oldPath, String newPath) {
try {
/**如果文件夹不存在 则建立新文件**/
new File(newPath).mkdirs();
File a = new File(oldPath);
String[] file = a.list();
File temp = null;
for (int i = 0; i < file.length; i++) {
if (oldPath.endsWith(File.separator)) {
temp = new File(oldPath + file[i]);
} else {
temp = new File(oldPath + File.separator + file[i]);
}
if (temp.isFile()) {
FileInputStream input = new FileInputStream(temp);
FileOutputStream output = new FileOutputStream(newPath
+ "/" + (temp.getName()).toString());
byte[] b = new byte[1024 * 5];
int len;
while ((len = input.read(b)) != -1) {
output.write(b, 0, len);
}
output.flush();
output.close();
input.close();
}
/**如果是子文件**/
if (temp.isDirectory()) {
copyFolder(oldPath + "/" + file[i], newPath + "/" + file[i]);
}
}
} catch (IOException e) {
log.debug("IO Exception", e);
} catch (Exception e) {
log.debug("Other Exception", e);
}
}
/**
* 移动文件
*
* @param oldPath
* @param newPath
* @return
*/
public void moveFile(String oldPath, String newPath) {
copyFile(oldPath, newPath);
delFile(oldPath);
}
/**
* 移动目录
*
* @param oldPath
* @param newPath
* @return
*/
public void moveFolder(String oldPath, String newPath) {
copyFolder(oldPath, newPath);
delFolder(oldPath);
}
/**
* 取得文件后缀名
*
* @param filename
* @return
*/
public String getExtensionName(String filename) {
if ((filename != null) && (filename.length() > 0)) {
int dot = filename.lastIndexOf('.');
if ((dot > -1) && (dot < (filename.length() - 1))) {
return filename.substring(dot + 1);
}
}
return filename;
}
/**
* 截取文件后缀名
*
* @param filename
* @return
*/
public String getFileNameNoExt(String filename) {
if ((filename != null) && (filename.length() > 0)) {
int dot = filename.lastIndexOf('.');
if ((dot > -1) && (dot < (filename.length()))) {
return filename.substring(0, dot);
}
}
return filename;
}
/**
* 截取文件名
*
* @param filename
* @return
*/
public String getPathNoFileName(String filename) {
if ((filename != null) && (filename.length() > 0)) {
int dot = filename.lastIndexOf('/');
if ((dot > -1) && (dot < (filename.length()))) {
return filename.substring(0, dot);
}
}
return filename;
}
/**
* 建立一个可以追加的BufferedReader
*
* @param fileDir
* @param fileName
* @return
*/
public BufferedWriter getWriter(String fileDir, String fileName) {
try {
File f1 = new File(fileDir);
if (!f1.exists()) {
f1.mkdirs();
}
f1 = new File(fileDir, fileName);
if (!f1.exists()) {
f1.createNewFile();
}
BufferedWriter bw = new BufferedWriter(new FileWriter(f1.getPath(), true));
return bw;
} catch (IOException e) {
log.debug("IO Exception", e);
return null;
} catch (Exception e) {
log.debug("Other Exception", e);
return null;
}
}
/**
* 得到一个BufferedReader
*
* @param fileDir
* @param fileName
* @param encoding
* @return
*/
public BufferedReader getReader(String fileDir, String fileName, String encoding) {
try {
File file = new File(fileDir, fileName);
InputStreamReader read = new InputStreamReader(new FileInputStream(
file), encoding);
BufferedReader br = new BufferedReader(read);
return br;
} catch (FileNotFoundException ex) {
log.debug("File Exception", ex);
return null;
} catch (IOException e) {
log.debug("IO Exception", e);
return null;
} catch (Exception e) {
log.debug("Other Exception", e);
return null;
}
}
}
######Throwables和Slf4j的两个jar包能提供下吗？万分感谢！######其实是，编译后文件放在classes文件夹下了，写进去了得，不过还是谢谢你了######
说到底，csv不过也是txt文本文件，只是后缀名是csv，直接当成写入txt就行了，一行一个，字段之间用逗号分隔。So easy! ######
回复 @还不让重名啊 :
1.7.12
1.1.3
1.16.6
org.slf4j
slf4j-api
${slf4j.version}
ch.qos.logback
logback-classic
${logback.version}
ch.qos.logback
logback-core
${logback.version}
org.projectlombok
lombok
${lombok.version}
provided
######
引用来自“LarryKoo”的评论
为了完美解决你的问题，特分享我自己的FileKit.java工具给你。
你只需要使用createFile方法，传入一行一个的List对象就可以生成了，目录不存在这些都判断了，只要你的目录可写就行了。
import mon.base.Throwables;
import lombok.extern.slf4j.Slf4j;
import java.io.*;
import java.util.ArrayList;
import java.util.List;
/**
* Created by jettykoo on 14-6-26 17:32.
* Copyright (c) , WeTeam Inc. All right reserved.
* WeTeam PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
* TEAM Zebra
*
* @version v0.0.1
*/
@Slf4j
public enum FileKit {
ice;
/**
* 遍历文件夹中文件
*
* @param filepath 文件路径
* @return 返回file［］ 数组
*/
public File[] getFileList(String filepath) {
File d = null;
File list[] = null;
/** 建立当前目录中文件的File对象 **/
try {
d = new File(filepath);
if (d.exists()) {
list = d.listFiles();
}
} catch (Exception e) {
log.debug("Other Exception", e);
}
/** 取得代表目录中所有文件的File对象数组 **/
return list;
}
/**
* 读取文本文件内容
*
* @param filePathAndName 带有完整绝对路径的文件名
* @param encoding 文本文件打开的编码方式
* @return 返回文本文件的内容
*/
public String readTxt(String filePathAndName, String encoding) throws IOException {
encoding = encoding.trim();
StringBuffer str = new StringBuffer("");
String st = "";
try {
FileInputStream fs = new FileInputStream(filePathAndName);
InputStreamReader isr;
if (encoding.equals("")) {
isr = new InputStreamReader(fs);
} else {
isr = new InputStreamReader(fs, encoding);
}
BufferedReader br = new BufferedReader(isr);
try {
String data = "";
while ((data = br.readLine()) != null) {
str.append(data);
}
} catch (Exception e) {
str.append(e.toString());
}
st = str.toString();
if (st != null && st.length() > 1)
st = st.substring(0, st.length() - 1);
} catch (IOException es) {
log.debug("IO Exception", es);
st = "";
}
return st;
}
/**
* 读取文本文件内容
*
* @param filePathAndName 带有完整绝对路径的文件名
* @param encoding 文本文件打开的编码方式
* @return 返回文本文件的内容
*/
public List readTxtList(String filePathAndName, String encoding) throws IOException {
encoding = encoding.trim();
List listStr = new ArrayList<>();
try {
FileInputStream fs = new FileInputStream(filePathAndName);
InputStreamReader isr;
if (encoding.equals("")) {
isr = new InputStreamReader(fs);
} else {
isr = new InputStreamReader(fs, encoding);
}
BufferedReader br = new BufferedReader(isr);
try {
String data = "";
while ((data = br.readLine()) != null) {
listStr.add(data);
}
} catch (Exception e) {
listStr.add(e.toString());
}
} catch (IOException es) {
log.debug("IO Exception", es);
}
return listStr;
}
/**
* 新建目录
*
* @param folderPath 目录
* @return 返回目录创建后的路径
*/
public Boolean createFolder(String folderPath) {
String dir = folderPath;
boolean bool = true;
try {
File myFilePath = new File(dir);
if (!myFilePath.exists()) {
bool = myFilePath.mkdirs();
}
} catch (Exception e) {
bool = false;
log.debug("Other Exception", e);
}
return bool;
}
/**
* 新建文件
*
* @param filePathAndName 文本文件完整绝对路径及文件名
* @return
*/
public Boolean createFile(String filePathAndName) {
boolean bool = true;
try {
File myFileAndName = new File(filePathAndName);
if (!myFileAndName.exists()) {
bool = myFileAndName.createNewFile();
}
} catch (IOException e) {
bool = false;
log.debug("IOException", e);
} catch (Exception e) {
bool = false;
log.debug("Other Exception", e);
} finally {
return bool;
}
}
/**
* 新建文件，并写入内容
*
* @param filePath 文本文件完整绝对路径
* @param fileName 文件名
* @param fileContent 文本文件内容
* @return
*/
public Boolean createFile(String filePath, String fileName, String fileContent) {
boolean bool = false;
try {
filePath = filePath.toString();
fileName = fileName.toString();
if (!filePath.endsWith("/")) {
filePath += "/";
}
String filePathAndName = filePath + fileName;
if (createFolder(filePath) && createFile(filePathAndName)) {
File myFilePath = new File(filePathAndName);
FileWriter resultFile = new FileWriter(myFilePath);
PrintWriter myFile = new PrintWriter(resultFile);
String strContent = fileContent;
myFile.println(strContent);
myFile.close();
resultFile.close();
bool = true;
}
} catch (IOException e) {
log.debug("IO Exception", e);
} catch (Exception e) {
log.debug("Other Exception", e);
} finally {
return bool;
}
}
/**
* 新建文件，并写入内容
*
* @param filePath 文本文件完整绝对路径
* @param fileName 文件名
* @param fileContentList 文本文件内容集合
* @return
*/
public Boolean createFile(String filePath, String fileName, List fileContentList) {
boolean bool = false;
try {
filePath = filePath.toString();
fileName = fileName.toString();
if (!filePath.endsWith("/")) {
filePath += "/";
}
String filePathAndName = filePath + fileName;
if (createFolder(filePath) && createFile(filePathAndName)) {
File myFilePath = new File(filePathAndName);
FileWriter resultFile = new FileWriter(myFilePath);
PrintWriter myFile = new PrintWriter(resultFile);
for (String strContent : fileContentList) {
myFile.println(strContent);
}
myFile.close();
resultFile.close();
bool = true;
}
} catch (IOException e) {
log.debug("IO Exception", e);
} catch (Exception e) {
log.debug("Other Exception", e);
} finally {
return bool;
}
}
/**
* 有编码方式的文件创建和内容写入
*
* @param filePath 文本文件完整绝对路径
* @param fileName 文件名
* @param fileContent 文本文件内容
* @param encoding 编码方式 例如 GBK 或者 UTF-8
* @return
*/
public Boolean createFile(String filePath, String fileName, String fileContent, String encoding) {
boolean bool = false;
try {
filePath = filePath.toString();
fileName = fileName.toString();
if (!filePath.endsWith("/")) {
filePath += "/";
}
String filePathAndName = filePath + fileName;
if (createFolder(filePath) && createFile(filePathAndName)) {
File myFilePath = new File(filePathAndName);
PrintWriter myFile = new PrintWriter(myFilePath, encoding);
String strContent = fileContent;
myFile.println(strContent);
myFile.close();
bool = true;
}
} catch (IOException e) {
log.debug("IO Exception", e);
} catch (Exception e) {
log.debug("Other Exception", e);
} finally {
return bool;
}
}
/**
* 删除文件
*
* @param filePathAndName 文本文件完整绝对路径及文件名
* @return Boolean 成功删除返回true遭遇异常返回false
*/
public Boolean delFile(String filePathAndName) {
boolean bea = false;
try {
String filePath = filePathAndName;
File myDelFile = new File(filePath);
if (myDelFile.exists()) {
myDelFile.delete();
bea = true;
} else {
bea = false;
}
} catch (Exception e) {
log.debug("Other Exception", e);
}
return bea;
}
/**
* 删除文件
*
* @param folderPath 文件夹完整绝对路径
* @return
*/
public void delFolder(String folderPath) {
try {
/**删除完里面所有内容**/
delAllFile(folderPath);
String filePath = folderPath;
filePath = filePath.toString();
File myFilePath = new File(filePath);
/**删除空文件夹**/
myFilePath.delete();
} catch (Exception e) {
log.debug("Other Exception", e);
}
}
/**
* 删除指定文件夹下所有文件
*
* @param path 文件夹完整绝对路径
* @return
*/
public Boolean delAllFile(String path) {
boolean bea = false;
File file = new File(path);
if (!file.exists()) {
return bea;
}
if (!file.isDirectory()) {
return bea;
}
String[] tempList = file.list();
File temp = null;
for (int i = 0; i < tempList.length; i++) {
if (path.endsWith(File.separator)) {
temp = new File(path + tempList[i]);
} else {
temp = new File(path + File.separator + tempList[i]);
}
if (temp.isFile()) {
temp.delete();
}
if (temp.isDirectory()) {
/**先删除文件夹里面的文件**/
delAllFile(path + "/" + tempList[i]);
/**再删除空文件**/
delFolder(path + "/" + tempList[i]);
bea = true;
}
}
return bea;
}
/**
* 复制单个文件
*
* @param oldPathFile 准备复制的文件源
* @param newPathFile 拷贝到新绝对路径带文件名
* @return
*/
public void copyFile(String oldPathFile, String newPathFile) {
try {
int bytesum = 0;
int byteread = 0;
File oldfile = new File(oldPathFile);
if (oldfile.exists()) {
InputStream inStream = new FileInputStream(oldPathFile);
FileOutputStream fs = new FileOutputStream(newPathFile);
byte[] buffer = new byte[1444];
while ((byteread = inStream.read(buffer)) != -1) {
bytesum += byteread;
fs.write(buffer, 0, byteread);
}
inStream.close();
}
} catch (IOException e) {
log.debug("IO Exception", e);
} catch (Exception e) {
log.debug("Other Exception", e);
}
}
/**
* 复制整个文件夹的内容
*
* @param oldPath 准备拷贝的目录
* @param newPath 指定绝对路径的新目录
* @return
*/
public void copyFolder(String oldPath, String newPath) {
try {
/**如果文件夹不存在 则建立新文件**/
new File(newPath).mkdirs();
File a = new File(oldPath);
String[] file = a.list();
File temp = null;
for (int i = 0; i < file.length; i++) {
if (oldPath.endsWith(File.separator)) {
temp = new File(oldPath + file[i]);
} else {
temp = new File(oldPath + File.separator + file[i]);
}
if (temp.isFile()) {
FileInputStream input = new FileInputStream(temp);
FileOutputStream output = new FileOutputStream(newPath
+ "/" + (temp.getName()).toString());
byte[] b = new byte[1024 * 5];
int len;
while ((len = input.read(b)) != -1) {
output.write(b, 0, len);
}
output.flush();
output.close();
input.close();
}
/**如果是子文件**/
if (temp.isDirectory()) {
copyFolder(oldPath + "/" + file[i], newPath + "/" + file[i]);
}
}
} catch (IOException e) {
log.debug("IO Exception", e);
} catch (Exception e) {
log.debug("Other Exception", e);
}
}
/**
* 移动文件
*
* @param oldPath
* @param newPath
* @return
*/
public void moveFile(String oldPath, String newPath) {
copyFile(oldPath, newPath);
delFile(oldPath);
}
/**
* 移动目录
*
* @param oldPath
* @param newPath
* @return
*/
public void moveFolder(String oldPath, String newPath) {
copyFolder(oldPath, newPath);
delFolder(oldPath);
}
/**
* 取得文件后缀名
*
* @param filename
* @return
*/
public String getExtensionName(String filename) {
if ((filename != null) && (filename.length() > 0)) {
int dot = filename.lastIndexOf('.');
if ((dot > -1) && (dot < (filename.length() - 1))) {
return filename.substring(dot + 1);
}
}
return filename;
}
/**
* 截取文件后缀名
*
* @param filename
* @return
*/
public String getFileNameNoExt(String filename) {
if ((filename != null) && (filename.length() > 0)) {
in
