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Java 随机字符串
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转自 http://blog.csdn.net/my541619352/article/details/45012299
2017-10-23
Host 标签的子标签 Alias 可以让多个域名映射到同一个 Host 上,避免了启动多个 Context 的状况
<Host name="www.12123.cn"...>
<Alias>www.122gov.cn</Alias>
</Host>
java 导出 Excel 封装
- 博客分类:
- Java
导出列表, 表头及主体内容. 可以对某列进行二次处理
public void exportExcelA(RoomModel rrm, HttpServletRequest request, HttpServletResponse response) throws Exception {
List<RoomModel> resultListA =
if (resultListA != null && !resultListA.isEmpty()) {
String fileName = Str ...
Java 计算两个日期之间相差天数
- 博客分类:
- Java
{
int y1 = 2016, m1 = 9, d1 = 29;
int y2 = 2014, m2 = 11, d2 = 8;
GregorianCalendar gcCalendar1 = new GregorianCalendar(y1, m1 - 1, d1);
GregorianCalendar gcCalendar2 = new GregorianCalendar(y2, m2 - 1, d2);
long timeMillis = gcCalendar1.getTimeInMillis() - gcCalendar2.g ...
Java Txt 流文件
- 博客分类:
- Java
BufferedReader reader = new BufferedReader(new InputStreamReader(txtFile.getInputStream(), request.getCharacterEncoding()));
String line = null;
while ((line = reader.readLine()) != null) {
if (EmptyUtil.notEmpty(line)) {
macAddresses.addAll(this.parseLine(line) ...
Java 调用 泛型方法
- 博客分类:
- Java
public static <V> Map<String, V> mapThem(String[] keys, V... vals) {
if (keys == null || keys.length == 0) {
return new HashMap<String, V>(4);
}
Map<String, V> map = new HashMap<String, V>(keys.length + 1);
for (int i = 0; i < keys.length; i ...
<a class="close-x" href="javascript:void(0)" onclick="javascript:window.parent.modalClose()">
<svg viewBox="0 0 24 24">
<path d="M22.2,4c0,0,0.5,0.6,0,1.1l-6.8,6.8l6.9,6.9c0.5,0.5,0,1.1,0,1.1L20,22.3c0,0-0.6,0.5-1.1,0L12,15.4 ...
URI uri = new URI(url);
Desktop desktop = Desktop.getDesktop();
if (desktop.isSupported(Desktop.Action.BROWSE)) {
desktop.browse(uri);
}
正则表达式的汉字匹配
- 博客分类:
- Java
普及下正则表达式, 留着备用
字符 含意
\ 做为转意,即通常在"\"后面的字符不按原来意义解释,如/b/匹配字符"b",当b前面加了反斜杆后/\b/,转意为匹配一个单词的边界。
-或-
对正则表达式功能字符的还原,如"*"匹配它前面元字符0次或多次,/a*/将匹配a,aa,aaa,加了"\"后,/a\*/将只匹配"a*"。
^ 匹配一个输入或一行的开头,/^a/匹配"an A",而不匹配"An a"
...
Spring 过滤器打印请求参数
- 博客分类:
- Java
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
StringBuffer buf = new StringBuffer();
buf.append("URL=:" + request.getRequestURL() + "\r\n");
Enumeration<String> na ...
Object-C block
- 博客分类:
- Object-C
/// 调用相册选择照片 ///
[menu addButtonWithTitle:NSLocalizedString(@"KeyFromAlbum", nil) block:onTouch_MenuItem];
/// 点击 相册 和 拍照 菜单选项代码块 ///
void (^onTouch_MenuItem)(NSUInteger) = ^(NSUInteger y) {
//NSLog(@"%lu", (unsigned long)index); // ==> 1
if (!im ...
Object-C 定时器 线程阻塞
- 博客分类:
- Object-C
20s 执行 func,取消执行的还没找到。。。
[NSTimer scheduledTimerWithTimeInterval:20 target:self selector:@selector(func) userInfo:nil repeats:YES];
当前进程阻塞 2s
[NSThread sleepForTimeInterval:2];
http://www.nssm.cc
添加 Windows 服务,总是失败,可以使用 NSSM 这个第三方的试一下
apk内部目录及执行
- 博客分类:
- Android
http://code.google.eom/p/android4me/downloads/list
以下情况为单层 Transactional 事务
<bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="mysqlDataSource" />
</bean>
<tx:annotation ...
google zxing 依赖包
<dependency>
<groupId>com.google.zxing</groupId>
<artifactId>javase</artifactId>
<version>3.2.1</version>
</dependency>
import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import ...