提交 | 用户 | 时间
|
212300
|
1 |
package com.jcdm.common.utils.file; |
懒 |
2 |
|
|
3 |
import java.io.File; |
|
4 |
import java.io.FileInputStream; |
|
5 |
import java.io.FileNotFoundException; |
|
6 |
import java.io.FileOutputStream; |
|
7 |
import java.io.IOException; |
|
8 |
import java.io.OutputStream; |
|
9 |
import java.io.UnsupportedEncodingException; |
|
10 |
import java.net.URLEncoder; |
|
11 |
import java.nio.charset.StandardCharsets; |
|
12 |
import javax.servlet.http.HttpServletRequest; |
|
13 |
import javax.servlet.http.HttpServletResponse; |
|
14 |
import org.apache.commons.io.IOUtils; |
|
15 |
import org.apache.commons.lang3.ArrayUtils; |
c44687
|
16 |
import com.jcdm.common.config.MesConfig; |
212300
|
17 |
import com.jcdm.common.utils.DateUtils; |
懒 |
18 |
import com.jcdm.common.utils.StringUtils; |
|
19 |
import com.jcdm.common.utils.uuid.IdUtils; |
|
20 |
import org.apache.commons.io.FilenameUtils; |
|
21 |
|
|
22 |
/** |
|
23 |
* 文件处理工具类 |
|
24 |
* |
8521a4
|
25 |
* @author jc |
212300
|
26 |
*/ |
懒 |
27 |
public class FileUtils |
|
28 |
{ |
|
29 |
public static String FILENAME_PATTERN = "[a-zA-Z0-9_\\-\\|\\.\\u4e00-\\u9fa5]+"; |
|
30 |
|
|
31 |
/** |
|
32 |
* 输出指定文件的byte数组 |
|
33 |
* |
|
34 |
* @param filePath 文件路径 |
|
35 |
* @param os 输出流 |
|
36 |
* @return |
|
37 |
*/ |
|
38 |
public static void writeBytes(String filePath, OutputStream os) throws IOException |
|
39 |
{ |
|
40 |
FileInputStream fis = null; |
|
41 |
try |
|
42 |
{ |
|
43 |
File file = new File(filePath); |
|
44 |
if (!file.exists()) |
|
45 |
{ |
|
46 |
throw new FileNotFoundException(filePath); |
|
47 |
} |
|
48 |
fis = new FileInputStream(file); |
|
49 |
byte[] b = new byte[1024]; |
|
50 |
int length; |
|
51 |
while ((length = fis.read(b)) > 0) |
|
52 |
{ |
|
53 |
os.write(b, 0, length); |
|
54 |
} |
|
55 |
} |
|
56 |
catch (IOException e) |
|
57 |
{ |
|
58 |
throw e; |
|
59 |
} |
|
60 |
finally |
|
61 |
{ |
|
62 |
IOUtils.close(os); |
|
63 |
IOUtils.close(fis); |
|
64 |
} |
|
65 |
} |
|
66 |
|
|
67 |
/** |
|
68 |
* 写数据到文件中 |
|
69 |
* |
|
70 |
* @param data 数据 |
|
71 |
* @return 目标文件 |
|
72 |
* @throws IOException IO异常 |
|
73 |
*/ |
|
74 |
public static String writeImportBytes(byte[] data) throws IOException |
|
75 |
{ |
c44687
|
76 |
return writeBytes(data, MesConfig.getImportPath()); |
212300
|
77 |
} |
懒 |
78 |
|
|
79 |
/** |
|
80 |
* 写数据到文件中 |
|
81 |
* |
|
82 |
* @param data 数据 |
|
83 |
* @param uploadDir 目标文件 |
|
84 |
* @return 目标文件 |
|
85 |
* @throws IOException IO异常 |
|
86 |
*/ |
|
87 |
public static String writeBytes(byte[] data, String uploadDir) throws IOException |
|
88 |
{ |
|
89 |
FileOutputStream fos = null; |
|
90 |
String pathName = ""; |
|
91 |
try |
|
92 |
{ |
|
93 |
String extension = getFileExtendName(data); |
|
94 |
pathName = DateUtils.datePath() + "/" + IdUtils.fastUUID() + "." + extension; |
|
95 |
File file = FileUploadUtils.getAbsoluteFile(uploadDir, pathName); |
|
96 |
fos = new FileOutputStream(file); |
|
97 |
fos.write(data); |
|
98 |
} |
|
99 |
finally |
|
100 |
{ |
|
101 |
IOUtils.close(fos); |
|
102 |
} |
|
103 |
return FileUploadUtils.getPathFileName(uploadDir, pathName); |
|
104 |
} |
|
105 |
|
|
106 |
/** |
|
107 |
* 删除文件 |
|
108 |
* |
|
109 |
* @param filePath 文件 |
|
110 |
* @return |
|
111 |
*/ |
|
112 |
public static boolean deleteFile(String filePath) |
|
113 |
{ |
|
114 |
boolean flag = false; |
|
115 |
File file = new File(filePath); |
|
116 |
// 路径为文件且不为空则进行删除 |
|
117 |
if (file.isFile() && file.exists()) |
|
118 |
{ |
|
119 |
flag = file.delete(); |
|
120 |
} |
|
121 |
return flag; |
|
122 |
} |
|
123 |
|
|
124 |
/** |
|
125 |
* 文件名称验证 |
|
126 |
* |
|
127 |
* @param filename 文件名称 |
|
128 |
* @return true 正常 false 非法 |
|
129 |
*/ |
|
130 |
public static boolean isValidFilename(String filename) |
|
131 |
{ |
|
132 |
return filename.matches(FILENAME_PATTERN); |
|
133 |
} |
|
134 |
|
|
135 |
/** |
|
136 |
* 检查文件是否可下载 |
|
137 |
* |
|
138 |
* @param resource 需要下载的文件 |
|
139 |
* @return true 正常 false 非法 |
|
140 |
*/ |
|
141 |
public static boolean checkAllowDownload(String resource) |
|
142 |
{ |
|
143 |
// 禁止目录上跳级别 |
|
144 |
if (StringUtils.contains(resource, "..")) |
|
145 |
{ |
|
146 |
return false; |
|
147 |
} |
|
148 |
|
|
149 |
// 检查允许下载的文件规则 |
|
150 |
if (ArrayUtils.contains(MimeTypeUtils.DEFAULT_ALLOWED_EXTENSION, FileTypeUtils.getFileType(resource))) |
|
151 |
{ |
|
152 |
return true; |
|
153 |
} |
|
154 |
|
|
155 |
// 不在允许下载的文件规则 |
|
156 |
return false; |
|
157 |
} |
|
158 |
|
|
159 |
/** |
|
160 |
* 下载文件名重新编码 |
|
161 |
* |
|
162 |
* @param request 请求对象 |
|
163 |
* @param fileName 文件名 |
|
164 |
* @return 编码后的文件名 |
|
165 |
*/ |
|
166 |
public static String setFileDownloadHeader(HttpServletRequest request, String fileName) throws UnsupportedEncodingException |
|
167 |
{ |
|
168 |
final String agent = request.getHeader("USER-AGENT"); |
|
169 |
String filename = fileName; |
|
170 |
if (agent.contains("MSIE")) |
|
171 |
{ |
|
172 |
// IE浏览器 |
|
173 |
filename = URLEncoder.encode(filename, "utf-8"); |
|
174 |
filename = filename.replace("+", " "); |
|
175 |
} |
|
176 |
else if (agent.contains("Firefox")) |
|
177 |
{ |
|
178 |
// 火狐浏览器 |
|
179 |
filename = new String(fileName.getBytes(), "ISO8859-1"); |
|
180 |
} |
|
181 |
else if (agent.contains("Chrome")) |
|
182 |
{ |
|
183 |
// google浏览器 |
|
184 |
filename = URLEncoder.encode(filename, "utf-8"); |
|
185 |
} |
|
186 |
else |
|
187 |
{ |
|
188 |
// 其它浏览器 |
|
189 |
filename = URLEncoder.encode(filename, "utf-8"); |
|
190 |
} |
|
191 |
return filename; |
|
192 |
} |
|
193 |
|
|
194 |
/** |
|
195 |
* 下载文件名重新编码 |
|
196 |
* |
|
197 |
* @param response 响应对象 |
|
198 |
* @param realFileName 真实文件名 |
|
199 |
*/ |
|
200 |
public static void setAttachmentResponseHeader(HttpServletResponse response, String realFileName) throws UnsupportedEncodingException |
|
201 |
{ |
|
202 |
String percentEncodedFileName = percentEncode(realFileName); |
|
203 |
|
|
204 |
StringBuilder contentDispositionValue = new StringBuilder(); |
|
205 |
contentDispositionValue.append("attachment; filename=") |
|
206 |
.append(percentEncodedFileName) |
|
207 |
.append(";") |
|
208 |
.append("filename*=") |
|
209 |
.append("utf-8''") |
|
210 |
.append(percentEncodedFileName); |
|
211 |
|
|
212 |
response.addHeader("Access-Control-Expose-Headers", "Content-Disposition,download-filename"); |
|
213 |
response.setHeader("Content-disposition", contentDispositionValue.toString()); |
|
214 |
response.setHeader("download-filename", percentEncodedFileName); |
|
215 |
} |
|
216 |
|
|
217 |
/** |
|
218 |
* 百分号编码工具方法 |
|
219 |
* |
|
220 |
* @param s 需要百分号编码的字符串 |
|
221 |
* @return 百分号编码后的字符串 |
|
222 |
*/ |
|
223 |
public static String percentEncode(String s) throws UnsupportedEncodingException |
|
224 |
{ |
|
225 |
String encode = URLEncoder.encode(s, StandardCharsets.UTF_8.toString()); |
|
226 |
return encode.replaceAll("\\+", "%20"); |
|
227 |
} |
|
228 |
|
|
229 |
/** |
|
230 |
* 获取图像后缀 |
|
231 |
* |
|
232 |
* @param photoByte 图像数据 |
|
233 |
* @return 后缀名 |
|
234 |
*/ |
|
235 |
public static String getFileExtendName(byte[] photoByte) |
|
236 |
{ |
|
237 |
String strFileExtendName = "jpg"; |
|
238 |
if ((photoByte[0] == 71) && (photoByte[1] == 73) && (photoByte[2] == 70) && (photoByte[3] == 56) |
|
239 |
&& ((photoByte[4] == 55) || (photoByte[4] == 57)) && (photoByte[5] == 97)) |
|
240 |
{ |
|
241 |
strFileExtendName = "gif"; |
|
242 |
} |
|
243 |
else if ((photoByte[6] == 74) && (photoByte[7] == 70) && (photoByte[8] == 73) && (photoByte[9] == 70)) |
|
244 |
{ |
|
245 |
strFileExtendName = "jpg"; |
|
246 |
} |
|
247 |
else if ((photoByte[0] == 66) && (photoByte[1] == 77)) |
|
248 |
{ |
|
249 |
strFileExtendName = "bmp"; |
|
250 |
} |
|
251 |
else if ((photoByte[1] == 80) && (photoByte[2] == 78) && (photoByte[3] == 71)) |
|
252 |
{ |
|
253 |
strFileExtendName = "png"; |
|
254 |
} |
|
255 |
return strFileExtendName; |
|
256 |
} |
|
257 |
|
|
258 |
/** |
b137f3
|
259 |
* 获取文件名称 /profile/upload/2022/04/16/jcdm.png |
212300
|
260 |
* |
懒 |
261 |
* @param fileName 路径名称 |
|
262 |
* @return 没有文件路径的名称 |
|
263 |
*/ |
|
264 |
public static String getName(String fileName) |
|
265 |
{ |
|
266 |
if (fileName == null) |
|
267 |
{ |
|
268 |
return null; |
|
269 |
} |
|
270 |
int lastUnixPos = fileName.lastIndexOf('/'); |
|
271 |
int lastWindowsPos = fileName.lastIndexOf('\\'); |
|
272 |
int index = Math.max(lastUnixPos, lastWindowsPos); |
|
273 |
return fileName.substring(index + 1); |
|
274 |
} |
|
275 |
|
|
276 |
/** |
b137f3
|
277 |
* 获取不带后缀文件名称 /profile/upload/2022/04/16/jcdm.png |
212300
|
278 |
* |
懒 |
279 |
* @param fileName 路径名称 |
|
280 |
* @return 没有文件路径和后缀的名称 |
|
281 |
*/ |
|
282 |
public static String getNameNotSuffix(String fileName) |
|
283 |
{ |
|
284 |
if (fileName == null) |
|
285 |
{ |
|
286 |
return null; |
|
287 |
} |
|
288 |
String baseName = FilenameUtils.getBaseName(fileName); |
|
289 |
return baseName; |
|
290 |
} |
|
291 |
} |