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panqili2120:
DeadWalkers 写道u.getPK(),此处的PK是U ...
Mybatis中insert、Update操作返回主键 -
DeadWalkers:
u.getPK(),此处的PK是User的一个成员变量么?那么 ...
Mybatis中insert、Update操作返回主键 -
panqili2120:
liu_hao0813 写道大佬,最后一句话是什么意思啊,指的 ...
eclipse中安装myeclipse10.1插件 -
liu_hao0813:
大佬,最后一句话是什么意思啊,指的是单独安装的吗,还是ecli ...
eclipse中安装myeclipse10.1插件 -
JetMah:
block == CJK_UNIFIED_IDEOGRAPHS ...
JAVA中判断char是否是中文的几种方法
文章列表
1.
const EventEmitter = require('events').EventEmitter;
class Test extends EventEmitter {
constructor(msg) {
super();
this.on('test', function (data) {
this.print('Testing..')
});
}
print(msg) {
console.info(msg)
}
}
new T ...
CentOS安装MySql
- 博客分类:
- 数据库
官方说明文档http://dev.mysql.com/doc/mysql-yum-repo-quick-guide/en/
下载YUM仓库
MYSQL YUM仓库地址:http://repo.mysql.com/yum
5.6的YUM仓库: http://repo.mysql.com/yum/mysql-5.6-community/el/6/x86_64/mysql-community-release-el6-5.noarch.rpm
安装yum本地仓库
yum localinstall mysql-community-release-el6-5.noarch.rpm
p ...
Mybatis中insert、Update操作返回主键
How to get pk after operation of insert, update in mybatis?
两种方式
1. <insert id="insert" parameterType="User" keyProperty="id" >
java代码 调用insert(User u)后 u.getPK()就有值了
2. 不推荐
Jrebel Maven插件
- 博客分类:
- java
Jrebel Maven插件
<plugin>
<groupId>org.zeroturnaround</groupId>
<artifactId>jrebel-maven-plugin</artifactId>
<version>1.1.5</version>
<executions>
<execution>
<id>generate-rebel-xml</id>
<phase ...
add the following to your ~/.mavenrc:
export JAVA_HOME=/Library/Java/JavaVirtualMachines/{jdk-version}/Contents/Home
http://stackoverflow.com/questions/18813828/why-maven-use-jdk-1-6-but-my-java-version-is-1-7
Exception in thread "main" java.lang.UnsupportedClassVersionError: org ...
SpringMVC是内部是怎么工作的
- 博客分类:
- Spring
Let us see the flow of spring MVC (3.2). I am not going to describe what is M,V,C hope you already know that mess right ? so lets start with the flow…
Spring MVC 3.2 Execution Flow
Step 1: First request will be received by DispatcherServletStep 2: DispatcherServlet will take the help of Handler ...
在iOS里面调用通讯录主要有以下两种方式:
一。使用系统自带的通讯录界面
首先需要导入AddressBookUI包
import AddressBookUI
以下是具体代码实现
let addressController:ABPeoplePickerNavigationController = ABPeoplePickerNavigationController();
// 实现ABPeoplePickerNavigationControllerDelegate协议
// addressController.peoplePicker ...
HOW TO INSTALL JDK 7 ON YOSEMITE (10.10)
Posted Tuesday, 03 Jun by Gabriel Rinaldi
yosemite, java, 10.10, mac, beta
To install it follow these steps:
Download JDK 7
Open the DMG
Run pkgutil --expand "/Volumes/JDK 7 Update 60/JDK 7 Update 60.pkg" "/tmp/JDK 7 Update 60. ...
Hunting Memory Leaks in Java
http://www.toptal.com/java/hunting-memory-leaks-in-java
finding files by name
finding by file size
$ find /usr/share/ -size +10M
$ find /mostlybig -size -1M
# searching for files that are between 500MB and 5GB.
$ find /bigdata -size +500M -size -5G -exec du -sh {} \;
1. 介绍
2. 安装
进入官网下载最新版本:http:// hbase.apache.org/
下载
#直接下载安装:
$ mkdir hbase-install
$ cd hbase-install
$ wget http://apache.claz.org/hbase/hbase-0.92.1/hbase-0.92.1.tar.gz $ tar xvfz hbase-0.92.1.tar.gz
#####或手动安装
$ mkdir hbase-install
$ mv hbase-0.94.20.tar.gz hbase-i ...
spring事务无异常回滚 [spring rollback without exception]TransactionInterceptor.CurrentTransactionStatus.RollbackOnly = true或者TransactionInterceptor.currentTransactionStatus().setRollbackOnly();
问题描述:用a.sql文件执行insert,不论是通过pl/sql还是sqlplus @文件名都是中文数据出现乱码。
绝大多数情况是环境变量NLS_LANG的值和数据库字符集不一致导致。
查看环境变量 echo $NLS_LANG
查看数据库字符集 select userenv('language') from dual;
如果二者不一致,修改其一使二者一致。
建议修改NLS_LANG,方便、简单、安全
修改NLS_LNAG,有两种方式
1,临时修改 在当前登录终端执行export NLS_LANG=XX (XX:表示数据库字符集)
本地登录退出后失效
...
由于org.springframework.http.converter.StringHttpMessageConverter中默认的编码为ISO-8859-1,而在使用@ResponseBody时SpringMVC会通过这个类对输出的内容进行编码,所以Ajax在SpringMVC的项目中会乱码...
于是解决方案:
------------------------------------------------------------------------------------------------------------------------
1. 修改源 ...
1、方法一
char c = 'a';
if((c >= 0x4e00)&&(c <= 0x9fbb)) {
System.out.println("是中文");
}
上面的方法很简单,但只能判断是否是中文,但不能判断是否是中文标点。
下面的方法很全面,中文字符标点都可以判断
2、方法二
private static final boolean isChinese(char c) {
Character.UnicodeBlock ub = Character.UnicodeBlock.of(c);
if ...