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Java create temporary file
From , 5 Years ago, written in Java, viewed 168 times.
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https://pastebin.vip/view/7750ca35
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/**
* 创建临时文件
*
* @param prefix
* 临时文件名的前缀
* @param suffix
* 临时文件名的后缀
* @param dirName
* 临时文件所在的目录,如果输入null,则在用户的文档目录下创建临时文件
* @return 临时文件创建成功返回true,否则返回false
*/
public
static
String
createTempFile
(
String
prefix,
String
suffix,
String
dirName
)
{
File
tempFile
=
null
;
if
(
dirName
==
null
)
{
try
{
// 在默认文件夹下创建临时文件
tempFile
=
File
.
createTempFile
(
prefix, suffix
)
;
// 返回临时文件的路径
return
tempFile.
getCanonicalPath
(
)
;
}
catch
(
IOException
e
)
{
e.
printStackTrace
(
)
;
System
.
out
.
println
(
"创建临时文件失败!"
+
e.
getMessage
(
)
)
;
return
null
;
}
}
else
{
File
dir
=
new
File
(
dirName
)
;
// 如果临时文件所在目录不存在,首先创建
if
(
!
dir.
exists
(
)
)
{
if
(
CreateFileUtil.
createDir
(
dirName
)
)
{
System
.
out
.
println
(
"创建临时文件失败,不能创建临时文件所在的目录!"
)
;
return
null
;
}
}
try
{
// 在指定目录下创建临时文件
tempFile
=
File
.
createTempFile
(
prefix, suffix, dir
)
;
return
tempFile.
getCanonicalPath
(
)
;
}
catch
(
IOException
e
)
{
e.
printStackTrace
(
)
;
System
.
out
.
println
(
"创建临时文件失败!"
+
e.
getMessage
(
)
)
;
return
null
;
}
}
}
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/** * 创建临时文件 * * @param prefix * 临时文件名的前缀 * @param suffix * 临时文件名的后缀 * @param dirName * 临时文件所在的目录,如果输入null,则在用户的文档目录下创建临时文件 * @return 临时文件创建成功返回true,否则返回false */ public static String createTempFile(String prefix, String suffix, String dirName) { File tempFile = null; if (dirName == null) { try { // 在默认文件夹下创建临时文件 tempFile = File.createTempFile(prefix, suffix); // 返回临时文件的路径 return tempFile.getCanonicalPath(); } catch (IOException e) { e.printStackTrace(); System.out.println("创建临时文件失败!" + e.getMessage()); return null; } } else { File dir = new File(dirName); // 如果临时文件所在目录不存在,首先创建 if (!dir.exists()) { if (CreateFileUtil.createDir(dirName)) { System.out.println("创建临时文件失败,不能创建临时文件所在的目录!"); return null; } } try { // 在指定目录下创建临时文件 tempFile = File.createTempFile(prefix, suffix, dir); return tempFile.getCanonicalPath(); } catch (IOException e) { e.printStackTrace(); System.out.println("创建临时文件失败!" + e.getMessage()); return null; } } }
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