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Spring MVC: How to return image in @ResponseBody?
...age.jpg");
final HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.IMAGE_PNG);
return new ResponseEntity<byte[]>(IOUtils.toByteArray(in), headers, HttpStatus.CREATED);
}
share
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Ora-00257 错误处理一列 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
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增大闪回日志文件的最大大小为50G
SQL> alter system set db_recovery_file_dest_size=50g;
系统已更改。
现在空间使用率为11.1%
SQL> select * from V$FLASH_RECOVERY_AREA_USAGE;
FILE_TYPE PERCENT_SPACE_USED PERCENT_SPACE_RECLAIMABLE
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How does lucene index documents?
...ts, the index can be traversed from one hit to another, making things like set and, particularly, range queries possible (much like B-Trees). And the Wikipedia entry on indexing Skip-Lists also explains why Lucene's Skip-List implementation is called a multi-level Skip-List - essentially, to make O(...
Maven Modules + Building a Single Specific Module
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You can define a multi-module project with an aggregator pom to build a set of projects.
It's also worthwhile mentioning m2eclipse, it integrates Maven into Eclipse and allows you to (optionally) resolve dependencies from the workspace. So if you are hacking away on multiple projects, the works...
How do I check if there are duplicates in a flat list?
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Use set() to remove duplicates if all values are hashable:
>>> your_list = ['one', 'two', 'one']
>>> len(your_list) != len(set(your_list))
True
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How to re-raise an exception in nested try/except blocks?
... editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
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How to change variables value while debugging with LLDB in Xcode?
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expr (void)[label setText:@"Foo"] should do it. Dot-Syntax usually won't work in the debugger. lldb probably interprets it as you wanted to access a member of a c-struct, but I'm not sure if this is the reason it won't work. Dot-Syntax doesn't...
How to detect modifier key states in WPF?
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private bool IsShiftKey { get; set; }
private void OnPreviewKeyDown(object sender, KeyEventArgs e)
{
IsShiftKey = Keyboard.Modifiers == ModifierKeys.Shift ? true : false;
if ((Key.Oem3 == e.Key || ((IsShiftKey && Key.Oem4 ...
How to tell if a string is not defined in a Bash shell script
...nswer, though it is not spelled out simply. To distinguish whether VAR is set but empty or not set, you can use:
if [ -z "${VAR+xxx}" ]; then echo VAR is not set at all; fi
if [ -z "$VAR" ] && [ "${VAR+xxx}" = "xxx" ]; then echo VAR is set but empty; fi
You probably can combine the two tes...
How can I round up the time to the nearest X minutes?
...ime object with this method? Like the kind and the time zone, if there are set?
– Evren Kuzucuoglu
Jul 14 '14 at 12:37
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