Java那些事之磁盘操作
磁盘操作和文件操作有时密不可分，上一次和大家分享了文件操作的基本用法，这次顺带把磁盘的操作也一起介绍一下，也好方便大家配合使用。
磁盘操作主要包括新建目录，复制文件，剪切，删除，以及压缩等。下面一一附上代码，代码中注释还是很详细的，就不在此做过多解释了。
1 /**
2 * @author Chen.Lu
3 * 磁盘文件或文件夹操作的通用方法
4 */
5 public class DiskHelper {
6 /**
7 * 新建目录
8 * @param folderPath String 如 c:/fqf
9 * @return boolean
10 */
11 public void newFolder(String folderPath) {
12 try {
13 String filePath = folderPath;
14 filePath = filePath.toString();
15 java.io.File myFilePath = new java.io.File(filePath);
16 if (!myFilePath.exists()) {
17 myFilePath.mkdir();
18 CheckMethods.PrintDebugMessage("新建目录操作成功："+folderPath);
19 }
20 }
21 catch (Exception e) {
22 CheckMethods.PrintInfoMessage("新建目录操作出错："+folderPath);
23 LogHelper.WriteLog(LogHelper.logger_Error, CommonValues.Log_Detail_Level, "info", "新建目录操作出错："+folderPath);
24 e.printStackTrace();
25 }
26 }
27
28 /**
29 * 新建文件
30 * @param filePathAndName String 文件路径及名称 如c:/fqf.txt
31 * @param fileContent String 文件内容
32 * @return boolean
33 */
34 public void newFile(String filePathAndName, String fileContent) {
35
36 try {
37 String filePath = filePathAndName;
38 filePath = filePath.toString();
39 File myFilePath = new File(filePath);
40 if (!myFilePath.exists()) {
41 myFilePath.createNewFile();
42 CheckMethods.PrintDebugMessage("新建文件操作成功："+filePathAndName);
43 }
44 FileWriter resultFile = new FileWriter(myFilePath);
45 PrintWriter myFile = new PrintWriter(resultFile);
46 String strContent = fileContent;
47 myFile.println(strContent);
48 resultFile.close();
49 }
50 catch (Exception e) {
51 CheckMethods.PrintInfoMessage("新建文件操作出错："+filePathAndName);
52 LogHelper.WriteLog(LogHelper.logger_Error, CommonValues.Log_Detail_Level, "info", "新建文件操作出错："+filePathAndName);
53 e.printStackTrace();
54
55 }
56
57 }
58
59 /**
60 * 删除文件
61 * @param filePathAndName String 文件路径及名称 如c:/fqf.txt
62 * @param fileContent String
63 * @return boolean
64 */
65 public void delFile(String filePathAndName) {
66 try {
67 String filePath = filePathAndName;
68 filePath = filePath.toString();
69 java.io.File myDelFile = new java.io.File(filePath);
70 myDelFile.delete();
71 CheckMethods.PrintDebugMessage("删除文件操作成功："+filePathAndName);
72 }
73 catch (Exception e) {
74 CheckMethods.PrintInfoMessage("删除文件操作出错："+filePathAndName);
75 LogHelper.WriteLog(LogHelper.logger_Error, CommonValues.Log_Detail_Level, "info", "删除文件操作出错："+filePathAndName);
76 e.printStackTrace();
77
78 }
79
80 }
81
82 /**
83 * 删除文件夹
84
85
86 * @param filePathAndName String 文件夹路径及名称 如c:/fqf
87 * @param fileContent String
88 * @return boolean
89 */
90 public void delFolder(String folderPath) {
91 try {
92 delAllFile(folderPath); //删除完里面所有内容
93 String filePath = folderPath;
94 filePath = filePath.toString();
95 java.io.File myFilePath = new java.io.File(filePath);
96 myFilePath.delete(); //删除空文件夹
97 CheckMethods.PrintDebugMessage("删除文件夹操作成功："+folderPath);
98 }
99 catch (Exception e) {
100 CheckMethods.PrintInfoMessage("删除文件夹操作出错："+folderPath);
101 LogHelper.WriteLog(LogHelper.logger_Error, CommonValues.Log_Detail_Level, "info", "删除文件夹操作出错："+folderPath);
102 e.printStackTrace();
103
104 }
105 }
106 /**
107 * 删除文件夹里面的所有文件
108 * @param path String 文件夹路径 如 c:/fqf
109 */
110 public void delAllFile(String path) {
111 CheckMethods.PrintDebugMessage(path );
112 File file = new File(path);
113 if (!file.exists()) {
114 return;
115 }
116 if (!file.isDirectory()) {
117 return;
118 }
119 String[] tempList = file.list();
120 File temp = null;
121 for (int i = 0; i < tempList.length; i++) {
122 if (path.endsWith(File.separator)) {
123 temp = new File(path + tempList[i]);
124 }
125 else {
126 temp = new File(path + File.separator + tempList[i]);
127 }
128 if (temp.isFile()) {
129 temp.delete();
130 }
131 if (temp.isDirectory()) {
132 delAllFile(path+"/"+ tempList[i]);//先删除文件夹里面的文件
133 delFolder(path+"/"+ tempList[i]);//再删除空文件夹
134 }
135 }
136 }
137
138 /**
139 * 复制单个文件
140 * @param oldPath String 原文件路径 如：c:/fqf.txt
141 * @param newPath String 复制后路径 如：f:/fqf.txt
142 * @return boolean
143 */
144 public void copyFile(String oldPath, String newPath) {
145 try {
146 int bytesum = 0;
147 int byteread = 0;
148 File oldfile = new File(oldPath);
149 if (oldfile.exists()) { //文件存在时
150 InputStream inStream = new FileInputStream(oldPath); //读入原文件
151 FileOutputStream fs = new FileOutputStream(newPath);
152 byte[] buffer = new byte[1444];
153 while ( (byteread = inStream.read(buffer)) != -1) {
154 bytesum += byteread; //字节数 文件大小
155 fs.write(buffer, 0, byteread);
156 }
157 inStream.close();
158 CheckMethods.PrintDebugMessage("复制单个文件操作成功："+oldPath);
159 }
160 }
161 catch (Exception e) {
162 CheckMethods.PrintInfoMessage("复制单个文件操作出错："+oldPath);
163 LogHelper.WriteLog(LogHelper.logger_Error, CommonValues.Log_Detail_Level, "info", "复制单个文件操作出错："+oldPath);
164 e.printStackTrace();
165
166 }
167
168 }
169
170 /**
171 * 复制整个文件夹内容
172 * @param oldPath String 原文件路径 如：c:/fqf
173 * @param newPath String 复制后路径 如：f:/fqf/ff
174 * @return boolean
175 */
176 public void copyFolder(String oldPath, String newPath) {
177
178 try {
179 (new File(newPath)).mkdirs(); //如果文件夹不存在 则建立新文件夹
180 File a=new File(oldPath);
181 String[] file=a.list();
182 File temp=null;
183 for (int i = 0; i < file.length; i++) {
184 if(oldPath.endsWith(File.separator)){
185 temp=new File(oldPath+file[i]);
186 }
187 else{
188 temp=new File(oldPath+File.separator+file[i]);
189 }
190
191 if(temp.isFile()){
192 FileInputStream input = new FileInputStream(temp);
193 FileOutputStream output = new FileOutputStream(newPath + "/" +
194 (temp.getName()).toString());
195 byte[] b = new byte[1024 * 5];
196 int len;
197 while ( (len = input.read(b)) != -1) {
198 output.write(b, 0, len);
199 }
200 output.flush();
201 output.close();
202 input.close();
203 }
204 if(temp.isDirectory()){//如果是子文件夹
205 copyFolder(oldPath+"/"+file[i],newPath+"/"+file[i]);
206 }
207 }
208 }
209 catch (Exception e) {
210 CheckMethods.PrintInfoMessage("复制整个文件夹内容操作出错:"+oldPath+"到"+newPath);
211 LogHelper.WriteLog(LogHelper.logger_Error, CommonValues.Log_Detail_Level, "info", "复制整个文件夹内容操作出错："+oldPath+"到"+newPath);
212 e.printStackTrace();
213
214 }
215
216 }
217
218 /**
219 * 移动文件到指定目录
220 * @param oldPath String 如：c:/fqf.txt
221 * @param newPath String 如：d:/fqf.txt
222 */
223 public void moveFile(String oldPath, String newPath) {
224 copyFile(oldPath, newPath);
225 delFile(oldPath);
226
227 }
228
229 /**
230 * 移动文件到指定目录
231 * @param oldPath String 如：c:/fqf.txt
232 * @param newPath String 如：d:/fqf.txt
233 */
234 public void moveFolder(String oldPath, String newPath) {
235 copyFolder(oldPath, newPath);
236 delFolder(oldPath);
237
238 }
239 }
2 * @author Chen.Lu
3 * 磁盘文件或文件夹操作的通用方法
4 */
5 public class DiskHelper {
6 /**
7 * 新建目录
8 * @param folderPath String 如 c:/fqf
9 * @return boolean
10 */
11 public void newFolder(String folderPath) {
12 try {
13 String filePath = folderPath;
14 filePath = filePath.toString();
15 java.io.File myFilePath = new java.io.File(filePath);
16 if (!myFilePath.exists()) {
17 myFilePath.mkdir();
18 CheckMethods.PrintDebugMessage("新建目录操作成功："+folderPath);
19 }
20 }
21 catch (Exception e) {
22 CheckMethods.PrintInfoMessage("新建目录操作出错："+folderPath);
23 LogHelper.WriteLog(LogHelper.logger_Error, CommonValues.Log_Detail_Level, "info", "新建目录操作出错："+folderPath);
24 e.printStackTrace();
25 }
26 }
27
28 /**
29 * 新建文件
30 * @param filePathAndName String 文件路径及名称 如c:/fqf.txt
31 * @param fileContent String 文件内容
32 * @return boolean
33 */
34 public void newFile(String filePathAndName, String fileContent) {
35
36 try {
37 String filePath = filePathAndName;
38 filePath = filePath.toString();
39 File myFilePath = new File(filePath);
40 if (!myFilePath.exists()) {
41 myFilePath.createNewFile();
42 CheckMethods.PrintDebugMessage("新建文件操作成功："+filePathAndName);
43 }
44 FileWriter resultFile = new FileWriter(myFilePath);
45 PrintWriter myFile = new PrintWriter(resultFile);
46 String strContent = fileContent;
47 myFile.println(strContent);
48 resultFile.close();
49 }
50 catch (Exception e) {
51 CheckMethods.PrintInfoMessage("新建文件操作出错："+filePathAndName);
52 LogHelper.WriteLog(LogHelper.logger_Error, CommonValues.Log_Detail_Level, "info", "新建文件操作出错："+filePathAndName);
53 e.printStackTrace();
54
55 }
56
57 }
58
59 /**
60 * 删除文件
61 * @param filePathAndName String 文件路径及名称 如c:/fqf.txt
62 * @param fileContent String
63 * @return boolean
64 */
65 public void delFile(String filePathAndName) {
66 try {
67 String filePath = filePathAndName;
68 filePath = filePath.toString();
69 java.io.File myDelFile = new java.io.File(filePath);
70 myDelFile.delete();
71 CheckMethods.PrintDebugMessage("删除文件操作成功："+filePathAndName);
72 }
73 catch (Exception e) {
74 CheckMethods.PrintInfoMessage("删除文件操作出错："+filePathAndName);
75 LogHelper.WriteLog(LogHelper.logger_Error, CommonValues.Log_Detail_Level, "info", "删除文件操作出错："+filePathAndName);
76 e.printStackTrace();
77
78 }
79
80 }
81
82 /**
83 * 删除文件夹
84
85
86 * @param filePathAndName String 文件夹路径及名称 如c:/fqf
87 * @param fileContent String
88 * @return boolean
89 */
90 public void delFolder(String folderPath) {
91 try {
92 delAllFile(folderPath); //删除完里面所有内容
93 String filePath = folderPath;
94 filePath = filePath.toString();
95 java.io.File myFilePath = new java.io.File(filePath);
96 myFilePath.delete(); //删除空文件夹
97 CheckMethods.PrintDebugMessage("删除文件夹操作成功："+folderPath);
98 }
99 catch (Exception e) {
100 CheckMethods.PrintInfoMessage("删除文件夹操作出错："+folderPath);
101 LogHelper.WriteLog(LogHelper.logger_Error, CommonValues.Log_Detail_Level, "info", "删除文件夹操作出错："+folderPath);
102 e.printStackTrace();
103
104 }
105 }
106 /**
107 * 删除文件夹里面的所有文件
108 * @param path String 文件夹路径 如 c:/fqf
109 */
110 public void delAllFile(String path) {
111 CheckMethods.PrintDebugMessage(path );
112 File file = new File(path);
113 if (!file.exists()) {
114 return;
115 }
116 if (!file.isDirectory()) {
117 return;
118 }
119 String[] tempList = file.list();
120 File temp = null;
121 for (int i = 0; i < tempList.length; i++) {
122 if (path.endsWith(File.separator)) {
123 temp = new File(path + tempList[i]);
124 }
125 else {
126 temp = new File(path + File.separator + tempList[i]);
127 }
128 if (temp.isFile()) {
129 temp.delete();
130 }
131 if (temp.isDirectory()) {
132 delAllFile(path+"/"+ tempList[i]);//先删除文件夹里面的文件
133 delFolder(path+"/"+ tempList[i]);//再删除空文件夹
134 }
135 }
136 }
137
138 /**
139 * 复制单个文件
140 * @param oldPath String 原文件路径 如：c:/fqf.txt
141 * @param newPath String 复制后路径 如：f:/fqf.txt
142 * @return boolean
143 */
144 public void copyFile(String oldPath, String newPath) {
145 try {
146 int bytesum = 0;
147 int byteread = 0;
148 File oldfile = new File(oldPath);
149 if (oldfile.exists()) { //文件存在时
150 InputStream inStream = new FileInputStream(oldPath); //读入原文件
151 FileOutputStream fs = new FileOutputStream(newPath);
152 byte[] buffer = new byte[1444];
153 while ( (byteread = inStream.read(buffer)) != -1) {
154 bytesum += byteread; //字节数 文件大小
155 fs.write(buffer, 0, byteread);
156 }
157 inStream.close();
158 CheckMethods.PrintDebugMessage("复制单个文件操作成功："+oldPath);
159 }
160 }
161 catch (Exception e) {
162 CheckMethods.PrintInfoMessage("复制单个文件操作出错："+oldPath);
163 LogHelper.WriteLog(LogHelper.logger_Error, CommonValues.Log_Detail_Level, "info", "复制单个文件操作出错："+oldPath);
164 e.printStackTrace();
165
166 }
167
168 }
169
170 /**
171 * 复制整个文件夹内容
172 * @param oldPath String 原文件路径 如：c:/fqf
173 * @param newPath String 复制后路径 如：f:/fqf/ff
174 * @return boolean
175 */
176 public void copyFolder(String oldPath, String newPath) {
177
178 try {
179 (new File(newPath)).mkdirs(); //如果文件夹不存在 则建立新文件夹
180 File a=new File(oldPath);
181 String[] file=a.list();
182 File temp=null;
183 for (int i = 0; i < file.length; i++) {
184 if(oldPath.endsWith(File.separator)){
185 temp=new File(oldPath+file[i]);
186 }
187 else{
188 temp=new File(oldPath+File.separator+file[i]);
189 }
190
191 if(temp.isFile()){
192 FileInputStream input = new FileInputStream(temp);
193 FileOutputStream output = new FileOutputStream(newPath + "/" +
194 (temp.getName()).toString());
195 byte[] b = new byte[1024 * 5];
196 int len;
197 while ( (len = input.read(b)) != -1) {
198 output.write(b, 0, len);
199 }
200 output.flush();
201 output.close();
202 input.close();
203 }
204 if(temp.isDirectory()){//如果是子文件夹
205 copyFolder(oldPath+"/"+file[i],newPath+"/"+file[i]);
206 }
207 }
208 }
209 catch (Exception e) {
210 CheckMethods.PrintInfoMessage("复制整个文件夹内容操作出错:"+oldPath+"到"+newPath);
211 LogHelper.WriteLog(LogHelper.logger_Error, CommonValues.Log_Detail_Level, "info", "复制整个文件夹内容操作出错："+oldPath+"到"+newPath);
212 e.printStackTrace();
213
214 }
215
216 }
217
218 /**
219 * 移动文件到指定目录
220 * @param oldPath String 如：c:/fqf.txt
221 * @param newPath String 如：d:/fqf.txt
222 */
223 public void moveFile(String oldPath, String newPath) {
224 copyFile(oldPath, newPath);
225 delFile(oldPath);
226
227 }
228
229 /**
230 * 移动文件到指定目录
231 * @param oldPath String 如：c:/fqf.txt
232 * @param newPath String 如：d:/fqf.txt
233 */
234 public void moveFolder(String oldPath, String newPath) {
235 copyFolder(oldPath, newPath);
236 delFolder(oldPath);
237
238 }
239 }
再来一段压缩的~
public class ZipHelper {
/**
* 压缩文件夹
* @param zipPath 生成的zip文件路径
* @param filePath 需要压缩的文件夹路径
* @throws Exception
*/
public void zipFolder(String zipPath, String filePath) throws Exception {
ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipPath));
File f = new File(filePath);
zipFiles(out, f, "");
out.close();
}
/**
* 递归调用，压缩文件夹和子文件夹的所有文件
* @param out
* @param f
* @param base
* @throws Exception
*/
private void zipFiles(ZipOutputStream out, File f, String base) throws Exception {
if (f.isDirectory()) {
File[] fl = f.listFiles();
out.putNextEntry(new ZipEntry(base + "/"));
base = base.length() == 0 ? "" : base + "/";
for (int i = 0; i < fl.length; i++) {
zipFiles(out, fl[i], base + fl[i].getName());//递归压缩子文件夹
}
} else {
out.putNextEntry(new ZipEntry(base));
FileInputStream in = new FileInputStream(f);
int b;
//System.out.println(base);
while ((b = in.read()) != -1) {
out.write(b);
}
in.close();
}
}
}
/**
* 压缩文件夹
* @param zipPath 生成的zip文件路径
* @param filePath 需要压缩的文件夹路径
* @throws Exception
*/
public void zipFolder(String zipPath, String filePath) throws Exception {
ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipPath));
File f = new File(filePath);
zipFiles(out, f, "");
out.close();
}
/**
* 递归调用，压缩文件夹和子文件夹的所有文件
* @param out
* @param f
* @param base
* @throws Exception
*/
private void zipFiles(ZipOutputStream out, File f, String base) throws Exception {
if (f.isDirectory()) {
File[] fl = f.listFiles();
out.putNextEntry(new ZipEntry(base + "/"));
base = base.length() == 0 ? "" : base + "/";
for (int i = 0; i < fl.length; i++) {
zipFiles(out, fl[i], base + fl[i].getName());//递归压缩子文件夹
}
} else {
out.putNextEntry(new ZipEntry(base));
FileInputStream in = new FileInputStream(f);
int b;
//System.out.println(base);
while ((b = in.read()) != -1) {
out.write(b);
}
in.close();
}
}
}
这里的调用方法我没有贴出来，但是函数的参数命名以及注释都已经很清楚了，我相信大家使用起来不成问题，如果遇到了什么问题，随时交流就可以了~
好了今天就这么多内容了，大家慢慢享用吧。
