1 package com.xyworkroom.ntko.util;
2
3 import java.io.File;
4 import java.io.FileInputStream;
5 import java.io.FileOutputStream;
6 import java.io.IOException;
7 import java.io.InputStream;
8 import java.io.OutputStream;
9
10 import javax.servlet.http.HttpServletResponse;
11
12 /**
13 * 文件处理工具类
14 *
15 * @author xmq
16 */
17 public class FileUtil {
18
19 /**
20 * 下载文件
21 * @param response
22 * @param filePat 包括文件名如：c:/a.txt
23 * @param fileName 文件名如：a.txt
24 */
25 public static void downFile(HttpServletResponse response,String filePath,String fileName){
26 try {
27 response.setCharacterEncoding("gkb");
28 response.setContentType("text/plain");
29 response.setHeader("Location",fileName);
30 response.setHeader("Content-Disposition", "attachment; filename=" + new String(fileName.getBytes("gb2312"),"ISO8859-1"));
31 FileInputStream fis=new FileInputStream(filePath);
32 OutputStream os=response.getOutputStream();
33 byte[] buf=new byte[1024];
34 int c=0;
35 while((c=fis.read(buf))!=-1){
36 os.write(buf, 0, c);
37 }
38 os.flush();
39 os.close();
40 if(fis!=null){
41 fis.close();
42 }
43 } catch (Exception e) {
44 // TODO Auto-generated catch block
45 e.printStackTrace();
46 }
47 }
48 /**
49 * 检查文件是否存在，存在返回true
50 * @param destFileName
51 * @return
52 */
53 public static boolean checkFileIsExists(String destFileName){
54 File file = new File(destFileName);
55 if (file.exists()) {
56 return true;
57 }else{
58 return false;
59 }
60 }
61 /**
62 * 复制文件
63 * @param source
64 * @param dest
65 * @throws IOException
66 */
67 public static void copyFile(File source, File dest){
68 InputStream input = null;
69 OutputStream output = null;
70 try {
71 input = new FileInputStream(source);
72 output = new FileOutputStream(dest);
73 byte[] buf = new byte[1024];
74 int bytesRead;
75 while ((bytesRead = input.read(buf))>-1) {
76 output.write(buf, 0, bytesRead);
77 }
78 output.close();
79 input.close();
80 }catch(Exception e){
81 e.printStackTrace();
82 }
83 }
84
85 /**
86 * 把输入流保存到指定文件
87 * @param source
88 * @param dest
89 * @throws IOException
90 */
91 public static void saveFile(InputStream source, File dest){
92 InputStream input = null;
93 OutputStream output = null;
94 try {
95 input =source;
96 output = new FileOutputStream(dest);
97 byte[] buf = new byte[1024];
98 int bytesRead;
99 while ((bytesRead = input.read(buf))>-1) {
100 output.write(buf, 0, bytesRead);
101 }
102 output.close();
103 input.close();
104 }catch(Exception e){
105 e.printStackTrace();
106 }
107 }
108 /**
109 * 创建文件
110 */
111 public static boolean createFile(String destFileName) {
112 File file = new File(destFileName);
113 if (file.exists()) {
114 return false;
115 }
116 if (destFileName.endsWith(File.separator)) {
117 return false;
118 }
119 if (!file.getParentFile().exists()) {
120 if (!file.getParentFile().mkdirs()) {
121 return false;
122 }
123 }
124 try {
125 if (file.createNewFile()) {
126 return true;
127 } else {
128 return false;
129 }
130 } catch (IOException e) {
131 e.printStackTrace();
132 return false;
133 }
134 }
135
136 /**
137 * 创建目录
138 */
139 public static boolean createDir(String destDirName) {
140 File dir = new File(destDirName);
141 if (dir.exists()) {
142 return false;
143 }
144 if (!destDirName.endsWith(File.separator))
145 destDirName = destDirName + File.separator;
146 if (dir.mkdirs()) {
147 return true;
148 } else {
149 return false;
150 }
151 }
152
153 /**
154 * 根据路径删除指定的目录或文件，无论存在与否
155 */
156 public static boolean DeleteFolder(String sPath) {
157 boolean flag = false;
158 File file = new File(sPath);
159 if (!file.exists()) {
160 return flag;
161 } else {
162 if (file.isFile()) {
163 return deleteFile(sPath);
164 } else {
165 return deleteDirectory(sPath);
166 }
167 }
168 }
169
170 /**
171 * 删除单个文件
172 */
173 public static boolean deleteFile(String sPath) {
174 boolean flag = false;
175 File file = new File(sPath);
176 if (file.isFile() && file.exists()) {
177 file.delete();
178 flag = true;
179 }
180 return flag;
181 }
182
183 /**
184 * 删除目录（文件夹）以及目录下的文件
185 */
186 public static boolean deleteDirectory(String sPath) {
187 if (!sPath.endsWith(File.separator)) {
188 sPath = sPath + File.separator;
189 }
190 File dirFile = new File(sPath);
191 if (!dirFile.exists() || !dirFile.isDirectory()) {
192 return false;
193 }
194 boolean flag = true;
195 File[] files = dirFile.listFiles();
196 for (int i = 0; i < files.length; i++) {
197 if (files[i].isFile()) {
198 flag = deleteFile(files[i].getAbsolutePath());
199 if (!flag)
200 break;
201 } else {
202 flag = deleteDirectory(files[i].getAbsolutePath());
203 if (!flag)
204 break;
205 }
206 }
207 if (!flag)
208 return false;
209 if (dirFile.delete()) {
210 return true;
211 } else {
212 return false;
213 }
214 }
215
216
217 /*public static void main(String[] args) {
218 String dir = "D:\\sgtsc_files\\393\\02\\";
219 createDir(dir);
220 String filename = "test1.txt";
221 String subdir = "subdir";
222 createDir(dir + subdir);
223 createFile(dir + filename);
224 createFile(dir + subdir + filename);
225 DeleteFolder(dir);
226 }*/
227
228 }
时间： 2024-10-21 15:47:17