IO基本

class FileHandle {
/**
* 新建目录
*
* @param folderPath
* String 如 c:/fqf
* @return boolean
*/
public void newFolder(String folderPath) {
try {
String filePath = folderPath;
filePath = filePath.toString();
java.io.File myFilePath = new java.io.File(filePath);
if (!myFilePath.exists()) {
myFilePath.mkdir();
}
} catch (Exception e) {
System.out.println("新建目录操作出错");
e.printStackTrace();
}
}

/**
* 新建文件
*
* @param filePathAndName
* String 文件路径及名称 如c:/fqf.txt
* @param fileContent
* String 文件内容
* @return boolean
*/
public void newFile(String filePathAndName, String fileContent) {
FileWriter resultFile = null;
PrintWriter myFile = null;
try {
String filePath = filePathAndName;
filePath = filePath.toString();
File myFilePath = new File(filePath);
if (!myFilePath.exists()) {
myFilePath.createNewFile();
}
resultFile = new FileWriter(myFilePath);
myFile = new PrintWriter(resultFile);
String strContent = fileContent;
myFile.println(strContent);

} catch (Exception e) {
System.out.println("新建目录操作出错");
e.printStackTrace();
} finally {
try {
if (myFile != null) {
myFile.close();
}
if (resultFile != null) {
resultFile.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}

}

/**
* 删除文件
*
* @param filePathAndName
* String 文件路径及名称 如c:/fqf.txt
* @return boolean
*/
public void delFile(String filePathAndName) {

String filePath = filePathAndName;
filePath = filePath.toString();
java.io.File myDelFile = new java.io.File(filePath);
myDelFile.delete();

}

/**
* 删除文件夹
*
* @param folderPath
* String 文件夹路径 如c:/fqf
* @return boolean
*/
public void delFolder(String folderPath) {

delAllFile(folderPath); // 删除完里面所有内容
String filePath = folderPath;
filePath = filePath.toString();
java.io.File myFilePath = new java.io.File(filePath);
System.out.println("=========" + myFilePath.getName());
myFilePath.delete(); // 删除空文件夹

}

/**
* 删除文件夹里面的所有文件
*
* @param path
* String 文件夹路径 如 c:/fqf
*/
public void delAllFile(String path) {
File file = new File(path);
if (!file.exists()) {
return;
}
if (!file.isDirectory()) {
return;
}
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()) {
System.out.println("=========" + temp.getName());
temp.delete();
}
if (temp.isDirectory()) {
delAllFile(path + File.separator + tempList[i]);// 先删除文件夹里面的文件
delFolder(path + File.separator + tempList[i]);// 再删除空文件夹
}
}
}

/**
* 复制单个文件
*
* @param oldPath
* String 原文件路径 如：c:/fqf.txt
* @param newPath
* String 复制后路径 如：f:/fqf.txt
* @return boolean
* @throws IOException
*/
public void copyFile(String oldPath, String newPath) throws IOException {

int bytesum = 0;
int byteread = 0;
InputStream inStream = null;
FileOutputStream fs = null;
try {
File oldfile = new File(oldPath);
if (oldfile.exists()) { // 文件存在时
inStream = new FileInputStream(oldPath); // 读入原文件
fs = new FileOutputStream(newPath);
byte[] buffer = new byte[1024 * 4];
while ((byteread = inStream.read(buffer)) != -1) {
bytesum += byteread; // 字节数 文件大小
System.out.println("文件大小:" + bytesum);
fs.write(buffer, 0, byteread);
}

}
} catch (IOException e) {
e.printStackTrace();
throw new IOException("拷贝文件" + oldPath + "时出错");
} finally {
try {
if (fs != null) {
fs.close();
}
if (inStream != null) {
inStream.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}

}

/**
* 复制整个文件夹内容
*
* @param oldPath
* String 原文件路径 如：c:/fqf
* @param newPath
* String 复制后路径 如：f:/fqf/ff
* @return boolean
* @throws Exception
*/
public void copyFolder(String oldPath, String newPath) throws Exception {
FileInputStream input = null;
FileOutputStream output = null;
try {
(new File(newPath)).mkdirs(); // 如果文件夹不存在 则建立新文件夹
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()) {
input = new FileInputStream(temp);
output = new FileOutputStream(newPath + File.separator
+ (temp.getName()).toString());
byte[] b = new byte[1024 * 5];
int len;
while ((len = input.read(b)) != -1) {
output.write(b, 0, len);
}
output.flush();
}
if (temp.isDirectory()) {
if (!temp.getAbsolutePath().contentEquals(
new StringBuffer(newPath.replace('/', '//'))))
copyFolder(oldPath + "/" + file[i], newPath + "/"
+ file[i]);
}
}
} catch (Exception e) {
System.out.println("复制整个文件夹内容操作出错");
e.printStackTrace();
throw new Exception("把" + oldPath + "拷贝到" + newPath + "时出错");

} finally {
try {
if (output != null) {
output.close();
}
if (input != null) {
input.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}

}

/**
* 移动文件到指定目录
*
* @param oldPath
* String 如：c:/fqf.txt
* @param newPath
* String 如：d:/fqf.txt
* @throws IOException
*/
public void moveFile(String oldPath, String newPath) throws IOException {
copyFile(oldPath, newPath);
delFile(oldPath);

}

/**
* 移动文件到指定目录
*
* @param oldPath
* String 如：c:/fqf
* @param newPath
* String 如：d:/fqf
* @throws Exception
*/
public void moveFolder(String oldPath, String newPath) throws Exception {
copyFolder(oldPath, newPath);
delFolder(oldPath);

}

/**
* 修改属性文件
*
* @param propFile
* 要修改的属性文件
* @param modifyProp
* 要修改的属性
* @throws IOException
*/
public void modifyProp(String propFile, Map modifyProp) throws IOException {
Properties proper = new Properties();

FileInputStream finPut = new FileInputStream(propFile);
proper.load(finPut);
Iterator keys = (Iterator) modifyProp.keySet().iterator();
while (keys.hasNext()) {
String key = (String) keys.next();
String value = (String) modifyProp.get(key);
System.out.println("key==" + key);
System.out.println("value==" + value);
proper.put(key, value);

}

FileOutputStream foutPut = new FileOutputStream(propFile);
proper.store(foutPut, "");

}

public void modifyFile(String propFile, Map modifyProp) throws IOException {
FileReader fr = null;
BufferedReader br = null;
try {
fr = new FileReader(propFile);
br = new BufferedReader(fr);
StringBuffer allProp = new StringBuffer();
String temp;
String key;
String value;
int end;
// 执行修改和删除
while (true) {
temp = br.readLine();
if (temp == null)
break;
end = temp.indexOf("=");
if (end != -1) {
key = temp.substring(0, end);
value = (String) modifyProp.get(key);
if (value != null && !"#delete;".equals(value)) {
temp = key + "=" + value;
modifyProp.remove(key);
} else if ("#delete;".equals(value)) {
temp = "";
modifyProp.remove(key);
}
}
allProp.append(temp);
allProp.append("/r/n");
// System.out.println(temp);
}
// 执行增加
Iterator ite = modifyProp.keySet().iterator();
while (ite.hasNext()) {
key = (String) ite.next();
value = (String) modifyProp.get(key);
if (!"#delete;".equals(value)) {
allProp.append(key + "=" + value);
allProp.append("/r/n");
}
// System.out.println(key + "==" + value);
}
// System.out.println(allProp.toString());
PrintWriter pw = new PrintWriter(new BufferedWriter(new FileWriter(
propFile)));
pw.write(allProp.toString());
pw.close();
} catch (IOException e) {
throw new IOException("修改文件" + propFile + "出错");
} finally {
if (br != null) {
br.close();
}
if (fr != null) {
fr.close();
}
}
}

}