通用redis
import lombok.extern.slf4j.Slf4j;
import org.apache.poi.ss.formula.functions.T;
import org.rcisoft.core.converter.ListTranscoder;
import org.rcisoft.core.service.RcRedisService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import java.util.List;
@Service
@Slf4j
public class RcRedisServiceImpl implements RcRedisService {
@Autowired
private JedisPool jedisPool;
ListTranscoder listTranscoder;
@Override
public Jedis getResource() {
return jedisPool.getResource();
}
@SuppressWarnings("deprecation")
@Override
public void returnResource(Jedis jedis) {
if(jedis != null){
jedisPool.returnResourceObject(jedis);
}
}
@Override
public void set(String key, String value,int expire) {
Jedis jedis=null;
try{
jedis = getResource();
jedis.set(key, value);
if (expire > 0)
jedis.expire(key,expire);
log.info("Redis set success - " + key + ", value:" + value);
} catch (Exception e) {
e.printStackTrace();
log.error("Redis set error: "+ e.getMessage() +" - " + key + ", value:" + value);
}finally{
returnResource(jedis);
}
}
@Override
public void setListObj(String key, byte[] value) {
Jedis jedis=null;
try{
jedis = getResource();
jedis.set(key.getBytes(), value);
log.info("Redis set success - " + key + ", value:" + value);
} catch (Exception e) {
e.printStackTrace();
log.error("Redis set error: "+ e.getMessage() +" - " + key + ", value:" + value);
}finally{
returnResource(jedis);
}
}
@Override
public <T> void setListObj(String key, List<T> value, int expire) {
Jedis jedis=null;
try{
jedis = getResource();
jedis.set(key.getBytes(), listTranscoder.serialize(value));
if (expire > 0)
jedis.expire(key.getBytes(),expire);
log.info("Redis set success - " + key + ", value:" + value);
} catch (Exception e) {
e.printStackTrace();
log.error("Redis set error: "+ e.getMessage() +" - " + key + ", value:" + value);
}finally{
returnResource(jedis);
}
}
@Override
public void set(String key, String value) {
Jedis jedis=null;
try{
jedis = getResource();
jedis.set(key, value);
log.info("Redis set success - " + key + ", value:" + value);
} catch (Exception e) {
e.printStackTrace();
log.error("Redis set error: "+ e.getMessage() +" - " + key + ", value:" + value);
}finally{
returnResource(jedis);
}
}
@Override
public void setBytes(String key, byte[] value) {
Jedis jedis=null;
try{
jedis = getResource();
jedis.set(key.getBytes(), value);
log.info("Redis set success - " + key + ", value:" + value);
} catch (Exception e) {
e.printStackTrace();
log.error("Redis set error: "+ e.getMessage() +" - " + key + ", value:" + value);
}finally{
returnResource(jedis);
}
}
@Override
public void setBytes(String key, byte[] value,int expire) {
Jedis jedis=null;
try{
jedis = getResource();
jedis.set(key.getBytes(), value);
if (expire > 0)
jedis.expire(key,expire);
log.info("Redis set success - " + key + ", value:" + value);
} catch (Exception e) {
e.printStackTrace();
log.error("Redis set error: "+ e.getMessage() +" - " + key + ", value:" + value);
}finally{
returnResource(jedis);
}
}
@Override
public String get(String key) {
String result = null;
Jedis jedis=null;
try{
jedis = getResource();
result = jedis.get(key);
log.info("Redis get success - " + key + ", value:" + result);
} catch (Exception e) {
e.printStackTrace();
log.error("Redis set error: "+ e.getMessage() +" - " + key + ", value:" + result);
}finally{
returnResource(jedis);
}
return result;
}
@Override
public byte[] getBytes(String key) {
byte[] result = null;
Jedis jedis=null;
try{
jedis = getResource();
result = jedis.get(key.getBytes());
log.info("Redis get success - " + key + ", value:" + result);
} catch (Exception e) {
e.printStackTrace();
log.error("Redis set error: "+ e.getMessage() +" - " + key + ", value:" + result);
}finally{
returnResource(jedis);
}
return result;
}
@Override
public void remove(String key) {
Jedis jedis=null;
try{
jedis = getResource();
jedis.del(key);
log.info("Redis del success - " + key );
} catch (Exception e) {
e.printStackTrace();
log.error("Redis set error: "+ e.getMessage() +" - " + key );
}finally{
returnResource(jedis);
}
}
@Override
public List getList(String key) {
Jedis jedis=null;
List result = null ;
try{
jedis = getResource();
result = jedis.lrange(key, 0, -1);
log.info("Redis get list success - " + key + ", value:" + result);
} catch (Exception e) {
e.printStackTrace();
log.error("Redis set error: "+ e.getMessage() +" - " + key );
}finally{
returnResource(jedis);
}
return result;
}
@Override
public List getListObj(String key) {
Jedis jedis=null;
List result = null ;
try{
jedis = getResource();
byte[] in = jedis.get(key.getBytes());
result = listTranscoder.deserialize(in);
// result = jedis.lrange(key, 0, -1);
log.info("Redis get list success - " + key + ", value:" + result);
} catch (Exception e) {
e.printStackTrace();
log.error("Redis set error: "+ e.getMessage() +" - " + key );
}finally{
returnResource(jedis);
}
return result;
}
@Override
public void setList(String key, String value) {
Jedis jedis=null;
try{
jedis = getResource();
jedis.rpush(key, value);
log.info("Redis set list success - " + key + ", value:" + value);
} catch (Exception e) {
e.printStackTrace();
log.error("Redis set error: "+ e.getMessage() +" - " + key + ", value:" + value);
}finally{
returnResource(jedis);
}
}
@Override
public void removeList(String key,String value) {
Jedis jedis=null;
try{
jedis = getResource();
jedis.lrem(key,1,value);
log.info("Redis remove list success - " + key + ", value:" + value);
} catch (Exception e) {
e.printStackTrace();
log.error("Redis set error: "+ e.getMessage() +" - " + key + ", value:" + value);
}finally{
returnResource(jedis);
}
}
}
JedisPool.java
package redis.clients.jedis;
import java.net.URI;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.SSLParameters;
import javax.net.ssl.SSLSocketFactory;
import org.apache.commons.pool2.impl.GenericObjectPool;
import org.apache.commons.pool2.impl.GenericObjectPoolConfig;
import redis.clients.jedis.exceptions.JedisException;
import redis.clients.util.JedisURIHelper;
import redis.clients.util.Pool;
public class JedisPool extends Pool<Jedis> {
public JedisPool() {
this(Protocol.DEFAULT_HOST, Protocol.DEFAULT_PORT);
}
public JedisPool(final GenericObjectPoolConfig poolConfig, final String host) {
this(poolConfig, host, Protocol.DEFAULT_PORT, Protocol.DEFAULT_TIMEOUT, null,
Protocol.DEFAULT_DATABASE, null);
}
public JedisPool(String host, int port) {
this(new GenericObjectPoolConfig(), host, port, Protocol.DEFAULT_TIMEOUT, null,
Protocol.DEFAULT_DATABASE, null);
}
public JedisPool(final String host) {
URI uri = URI.create(host);
if (JedisURIHelper.isValid(uri)) {
String h = uri.getHost();
int port = uri.getPort();
String password = JedisURIHelper.getPassword(uri);
int database = JedisURIHelper.getDBIndex(uri);
boolean ssl = uri.getScheme().equals("rediss");
this.internalPool = new GenericObjectPool<Jedis>(new JedisFactory(h, port,
Protocol.DEFAULT_TIMEOUT, Protocol.DEFAULT_TIMEOUT, password, database, null,
ssl, null, null, null), new GenericObjectPoolConfig());
} else {
this.internalPool = new GenericObjectPool<Jedis>(new JedisFactory(host,
Protocol.DEFAULT_PORT, Protocol.DEFAULT_TIMEOUT, Protocol.DEFAULT_TIMEOUT, null,
Protocol.DEFAULT_DATABASE, null, false, null, null, null), new GenericObjectPoolConfig());
}
}
public JedisPool(final String host, final SSLSocketFactory sslSocketFactory,
final SSLParameters sslParameters, final HostnameVerifier hostnameVerifier) {
URI uri = URI.create(host);
if (JedisURIHelper.isValid(uri)) {
String h = uri.getHost();
int port = uri.getPort();
String password = JedisURIHelper.getPassword(uri);
int database = JedisURIHelper.getDBIndex(uri);
boolean ssl = uri.getScheme().equals("rediss");
this.internalPool = new GenericObjectPool<Jedis>(new JedisFactory(h, port,
Protocol.DEFAULT_TIMEOUT, Protocol.DEFAULT_TIMEOUT, password, database, null, ssl,
sslSocketFactory, sslParameters, hostnameVerifier),
new GenericObjectPoolConfig());
} else {
this.internalPool = new GenericObjectPool<Jedis>(new JedisFactory(host,
Protocol.DEFAULT_PORT, Protocol.DEFAULT_TIMEOUT, Protocol.DEFAULT_TIMEOUT, null,
Protocol.DEFAULT_DATABASE, null, false, null, null, null), new GenericObjectPoolConfig());
}
}
public JedisPool(final URI uri) {
this(new GenericObjectPoolConfig(), uri, Protocol.DEFAULT_TIMEOUT);
}
public JedisPool(final URI uri, final SSLSocketFactory sslSocketFactory,
final SSLParameters sslParameters, final HostnameVerifier hostnameVerifier) {
this(new GenericObjectPoolConfig(), uri, Protocol.DEFAULT_TIMEOUT, sslSocketFactory,
sslParameters, hostnameVerifier);
}
public JedisPool(final URI uri, final int timeout) {
this(new GenericObjectPoolConfig(), uri, timeout);
}
public JedisPool(final URI uri, final int timeout, final SSLSocketFactory sslSocketFactory,
final SSLParameters sslParameters, final HostnameVerifier hostnameVerifier) {
this(new GenericObjectPoolConfig(), uri, timeout, sslSocketFactory, sslParameters,
hostnameVerifier);
}
public JedisPool(final GenericObjectPoolConfig poolConfig, final String host, int port,
int timeout, final String password) {
this(poolConfig, host, port, timeout, password, Protocol.DEFAULT_DATABASE, null);
}
public JedisPool(final GenericObjectPoolConfig poolConfig, final String host, int port,
int timeout, final String password, final boolean ssl) {
this(poolConfig, host, port, timeout, password, Protocol.DEFAULT_DATABASE, null, ssl);
}
public JedisPool(final GenericObjectPoolConfig poolConfig, final String host, int port,
int timeout, final String password, final boolean ssl,
final SSLSocketFactory sslSocketFactory, final SSLParameters sslParameters,
final HostnameVerifier hostnameVerifier) {
this(poolConfig, host, port, timeout, password, Protocol.DEFAULT_DATABASE, null, ssl,
sslSocketFactory, sslParameters, hostnameVerifier);
}
public JedisPool(final GenericObjectPoolConfig poolConfig, final String host, final int port) {
this(poolConfig, host, port, Protocol.DEFAULT_TIMEOUT, null, Protocol.DEFAULT_DATABASE, null);
}
public JedisPool(final GenericObjectPoolConfig poolConfig, final String host, final int port,
final boolean ssl) {
this(poolConfig, host, port, Protocol.DEFAULT_TIMEOUT, null, Protocol.DEFAULT_DATABASE, null,
ssl);
}
public JedisPool(final GenericObjectPoolConfig poolConfig, final String host, final int port,
final boolean ssl, final SSLSocketFactory sslSocketFactory, final SSLParameters sslParameters,
final HostnameVerifier hostnameVerifier) {
this(poolConfig, host, port, Protocol.DEFAULT_TIMEOUT, null, Protocol.DEFAULT_DATABASE, null,
ssl, sslSocketFactory, sslParameters, hostnameVerifier);
}
public JedisPool(final GenericObjectPoolConfig poolConfig, final String host, final int port,
final int timeout) {
this(poolConfig, host, port, timeout, null, Protocol.DEFAULT_DATABASE, null);
}
public JedisPool(final GenericObjectPoolConfig poolConfig, final String host, final int port,
final int timeout, final boolean ssl) {
this(poolConfig, host, port, timeout, null, Protocol.DEFAULT_DATABASE, null, ssl);
}
public JedisPool(final GenericObjectPoolConfig poolConfig, final String host, final int port,
final int timeout, final boolean ssl, final SSLSocketFactory sslSocketFactory,
final SSLParameters sslParameters, final HostnameVerifier hostnameVerifier) {
this(poolConfig, host, port, timeout, null, Protocol.DEFAULT_DATABASE, null, ssl,
sslSocketFactory, sslParameters, hostnameVerifier);
}
public JedisPool(final GenericObjectPoolConfig poolConfig, final String host, int port,
int timeout, final String password, final int database) {
this(poolConfig, host, port, timeout, password, database, null);
}
public JedisPool(final GenericObjectPoolConfig poolConfig, final String host, int port,
int timeout, final String password, final int database, final boolean ssl) {
this(poolConfig, host, port, timeout, password, database, null, ssl);
}
public JedisPool(final GenericObjectPoolConfig poolConfig, final String host, int port,
int timeout, final String password, final int database, final boolean ssl,
final SSLSocketFactory sslSocketFactory, final SSLParameters sslParameters,
final HostnameVerifier hostnameVerifier) {
this(poolConfig, host, port, timeout, password, database, null, ssl, sslSocketFactory,
sslParameters, hostnameVerifier);
}
public JedisPool(final GenericObjectPoolConfig poolConfig, final String host, int port,
int timeout, final String password, final int database, final String clientName) {
this(poolConfig, host, port, timeout, timeout, password, database, clientName, false,
null, null, null);
}
public JedisPool(final GenericObjectPoolConfig poolConfig, final String host, int port,
int timeout, final String password, final int database, final String clientName,
final boolean ssl) {
this(poolConfig, host, port, timeout, timeout, password, database, clientName, ssl,
null, null, null);
}
public JedisPool(final GenericObjectPoolConfig poolConfig, final String host, int port,
int timeout, final String password, final int database, final String clientName,
final boolean ssl, final SSLSocketFactory sslSocketFactory,
final SSLParameters sslParameters, final HostnameVerifier hostnameVerifier) {
this(poolConfig, host, port, timeout, timeout, password, database, clientName, ssl,
sslSocketFactory, sslParameters, hostnameVerifier);
}
public JedisPool(final GenericObjectPoolConfig poolConfig, final String host, int port,
final int connectionTimeout, final int soTimeout, final String password, final int database,
final String clientName, final boolean ssl, final SSLSocketFactory sslSocketFactory,
final SSLParameters sslParameters, final HostnameVerifier hostnameVerifier) {
super(poolConfig, new JedisFactory(host, port, connectionTimeout, soTimeout, password,
database, clientName, ssl, sslSocketFactory, sslParameters, hostnameVerifier));
}
public JedisPool(final GenericObjectPoolConfig poolConfig, final URI uri) {
this(poolConfig, uri, Protocol.DEFAULT_TIMEOUT);
}
public JedisPool(final GenericObjectPoolConfig poolConfig, final URI uri,
final SSLSocketFactory sslSocketFactory, final SSLParameters sslParameters,
final HostnameVerifier hostnameVerifier) {
this(poolConfig, uri, Protocol.DEFAULT_TIMEOUT, sslSocketFactory, sslParameters,
hostnameVerifier);
}
public JedisPool(final GenericObjectPoolConfig poolConfig, final URI uri, final int timeout) {
this(poolConfig, uri, timeout, timeout);
}
public JedisPool(final GenericObjectPoolConfig poolConfig, final URI uri, final int timeout,
final SSLSocketFactory sslSocketFactory, final SSLParameters sslParameters,
final HostnameVerifier hostnameVerifier) {
this(poolConfig, uri, timeout, timeout, sslSocketFactory, sslParameters, hostnameVerifier);
}
public JedisPool(final GenericObjectPoolConfig poolConfig, final URI uri,
final int connectionTimeout, final int soTimeout) {
super(poolConfig, new JedisFactory(uri, connectionTimeout, soTimeout, null, false,
null, null, null));
}
public JedisPool(final GenericObjectPoolConfig poolConfig, final URI uri,
final int connectionTimeout, final int soTimeout, final SSLSocketFactory sslSocketFactory,
final SSLParameters sslParameters, final HostnameVerifier hostnameVerifier) {
super(poolConfig, new JedisFactory(uri, connectionTimeout, soTimeout, null,
(uri.getScheme() !=null && uri.getScheme().equals("rediss")), sslSocketFactory,
sslParameters, hostnameVerifier));
}
@Override
public Jedis getResource() {
Jedis jedis = super.getResource();
jedis.setDataSource(this);
return jedis;
}
/**
* @deprecated starting from Jedis 3.0 this method will not be exposed. Resource cleanup should be
* done using @see {@link redis.clients.jedis.Jedis#close()}
*/
@Override
@Deprecated
public void returnBrokenResource(final Jedis resource) {
if (resource != null) {
returnBrokenResourceObject(resource);
}
}
/**
* @deprecated starting from Jedis 3.0 this method will not be exposed. Resource cleanup should be
* done using @see {@link redis.clients.jedis.Jedis#close()}
*/
@Override
@Deprecated
public void returnResource(final Jedis resource) {
if (resource != null) {
try {
resource.resetState();
returnResourceObject(resource);
} catch (Exception e) {
returnBrokenResource(resource);
throw new JedisException("Could not return the resource to the pool", e);
}
}
}
}
RedisConfig.java
import lombok.extern.slf4j.Slf4j;
import org.rcisoft.core.bean.RcRedisConfigBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;
@Configuration
@Slf4j
public class RedisConfig {
@Autowired
private RcRedisConfigBean redisConfigBean;
@Bean
public JedisPool getJedisPool(){
JedisPoolConfig config = new JedisPoolConfig();
//连接耗尽时是否阻塞, false报异常,ture阻塞直到超时, 默认true
config.setBlockWhenExhausted(true);
//设置的逐出策略类名, 默认DefaultEvictionPolicy(当连接超过最大空闲时间,或连接数超过最大空闲连接数)
config.setEvictionPolicyClassName("org.apache.commons.pool2.impl.DefaultEvictionPolicy");
//是否启用pool的jmx管理功能, 默认true
config.setJmxEnabled(true);
//MBean ObjectName = new ObjectName("org.apache.commons.pool2:type=GenericObjectPool,name=" + "pool" + i); 默认为"pool", JMX不熟,具体不知道是干啥的...默认就好.
config.setJmxNamePrefix("pool");
//是否启用后进先出, 默认true
config.setLifo(false);
//最大空闲连接数, 默认8个
config.setMaxIdle(redisConfigBean.getMaxIdle());
//最大连接数, 默认8个
config.setMaxTotal(redisConfigBean.getMaxActive());
//获取连接时的最大等待毫秒数(如果设置为阻塞时BlockWhenExhausted),如果超时就抛异常, 小于零:阻塞不确定的时间, 默认-1
config.setMaxWaitMillis(redisConfigBean.getMaxWait());
//逐出连接的最小空闲时间 默认1800000毫秒(30分钟)
config.setMinEvictableIdleTimeMillis(1800000);
//最小空闲连接数, 默认0
config.setMinIdle(0);
//每次逐出检查时 逐出的最大数目 如果为负数就是 : 1/abs(n), 默认3
config.setNumTestsPerEvictionRun(3);
//对象空闲多久后逐出, 当空闲时间>该值 且 空闲连接>最大空闲数 时直接逐出,不再根据MinEvictableIdleTimeMillis判断 (默认逐出策略)
config.setSoftMinEvictableIdleTimeMillis(1800000);
//在获取连接的时候检查有效性, 默认false
config.setTestOnBorrow(false);
//在空闲时检查有效性, 默认false
config.setTestWhileIdle(false);
//逐出扫描的时间间隔(毫秒) 如果为负数,则不运行逐出线程, 默认-1
config.setTimeBetweenEvictionRunsMillis(-1);
JedisPool pool = new JedisPool(config,redisConfigBean.getHost(),redisConfigBean.getPort(),
redisConfigBean.getTimeout(),redisConfigBean.getPassword(),redisConfigBean.getDatabase());
log.info("init JedisPool ...");
return pool;
}
}
RcRedisService.java
import redis.clients.jedis.Jedis;
import java.util.List;
public interface RcRedisService {
/**
* 获取jedis
* @return
*/
public Jedis getResource();
/**
* 归还jedis
* @param jedis
*/
public void returnResource(Jedis jedis);
/**
* 赋值
* @param key
* @param value
*/
public void set(String key, String value);
/**
* 赋值字节数组 设置过期
* @param key
* @param value
*/
public void set(String key, String value, int expire);
/**
* 赋值
* @param key
* @param value
*/
public void setListObj(String key, byte[] value);
/**
* 赋值字节数组 设置过期
* @param key
* @param
*/
<T> void setListObj(String key, List<T> value, int expire);
/**
* 赋值字节数组
* @param key
* @param value
*/
public void setBytes(String key, byte[] value);
/**
* 赋值字节数组 设置过期
* @param key
* @param value
*/
public void setBytes(String key, byte[] value, int expire);
/**
* 取值
* @param key
* @return
*/
public String get(String key);
/**
* 取值数组
* @param key
* @return
*/
public byte[] getBytes(String key);
/**
* 清除
* @param key
*/
public void remove(String key);
/**
* 获取list
* @param key
*/
public List getList(String key);
public List getListObj(String key);
/**
* set list
* @param key
* @param value
*/
public void setList(String key, String value);
/**
* 从 list 中 删除
* @param key
*/
public void removeList(String key, String value);
}
RedisConfigBean.java
import lombok.Data;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;
@Component
@ConfigurationProperties(prefix = "spring.redis")
@Data
public class RcRedisConfigBean {
private String host;
private int port;
@Value("${spring.redis.password}")
private String password;
private int timeout;
private int database;
@Value("${spring.redis.pool.max-idle:100}")
private int maxIdle;
@Value("${spring.redis.pool.max-active:100}")
private int maxActive;
@Value("${spring.redis.pool.min-idle:1}")
private int minIdle;
@Value("${spring.redis.pool.max-wait:-1}")
private int maxWait;
}
通用redis的更多相关文章
- Linux+Redis实战教程_day03_4、通用redis命令【重点】
4.通用redis命令[重点] Redis五种数据类型,String,hash,list,set,有序set l keys pattern:获取所有与pattern匹配的key,返回所有与该key匹配 ...
- php 通用redis类
php 通用redis类 <?php /** * redis操作类 * 说明,任何为false的串,存在redis中都是空串. * 只有在key不存在时,才会返回false. * 这点可用于防止 ...
- 通用redis命令
Redis五种数据类型,String,hash,list,set,有序set keys pattern:获取所有与pattern匹配的key,返回所有与该key匹配的keys. 通配符: *表示任意0 ...
- redis成长之路——(一)
为什么使用redis Redis适合所有数据in-momory的场景,虽然Redis也提供持久化功能,但实际更多的是一个disk-backed的功能,跟传统意义上的持久化有比较大的差别,那么可能大家就 ...
- 新人入坑Redis必会的吐血总结
新人入坑Redis必会的吐血总结 一.什么是Redis Redis是一个使用C语言开发的开源的高性能的key-value存储系统,我们可以把它近似理解为Java Map.简单来讲,Redis是一种NO ...
- DotNet 资源大全
awesome-dotnet 是由 quozd 发起和维护.内容包括:编译器.压缩.应用框架.应用模板.加密.数据库.反编译.IDE.日志.风格指南等. https://github.com/jobb ...
- 《.NET开发资源大全》
目录 API 应用框架(Application Frameworks) 应用模板(Application Templates) 人工智能(Artificial Intelligence) 程序集处理( ...
- 转帖:DotNet 资源大全中文版
(注:下面用 [$] 标注的表示收费工具,但部分收费工具针对开源软件的开发/部署/托管是免费的) API 框架 NancyFx:轻量.用于构建 HTTP 基础服务的非正式(low-ceremony)框 ...
- .Net 开源项目资源大全
伯乐在线已在 GitHub 上发起「DotNet 资源大全中文版」的整理.欢迎扩散.欢迎加入. https://github.com/jobbole/awesome-dotnet-cn (注:下面用 ...
随机推荐
- 循序渐进VUE+Element 前端应用开发(20)--- 使用组件封装简化界面代码
VUE+Element 前端应用,比较不错的一点就是界面组件化,我们可以根据重用的指导方针,把界面内容拆分为各个不同的组合,每一个模块可以是一个组件,也可以是多个组件的综合体,而且这一个过程非常方便. ...
- odoo10中的邮件提醒
odoo10中邮件提醒配置如下: 1.配置出向邮件服务器 打开开发者模式,设置-->技术-->email-->出向邮件服务器 设置如下: 如果配置成功,点击’测试连接‘,会出现如下弹 ...
- 一文解开java中字符串编码的小秘密
目录 简介 Unicode的发展史 Unicode详解 UTF-8 UTF-16 UTF-32 Null-terminated string 和变种UTF-8 简介 在本文中你将了解到Unicode和 ...
- canvas绘制图片drawImage学习
不得不说,html5中的canvas真的非常强大,从图片处理,到视频处理,再到游戏开发,都能见到canvas的身影,然而,就这一个<canvas>标签,功能居然如此强大,这主要归功于can ...
- oracle之dblink
当用户要跨本地Oracle数据库,访问另外一个数据库表中的数据时,本地数据库中必须创建了远程数据库的dblink,通过dblink本地数据库可以像访问本地数据库一样访问远程数据库表中的数据.下面讲介绍 ...
- CTF-WeChall-第一天
2020.09.09 今天来了一个新平台,WeChall,从简单的开始做,才能找到自信--i春秋的题做自闭了
- [Binder深入学习二]Binder驱动——基础数据结构二
Userspace和KernelSpace进行交互时,大部分命令是通过 ioctl 实现的,在这个过程中,最重要的一个便是 BINDER_WRITE_READ 命令了. #define BINDER_ ...
- javac中不引人注目的编码小坑
来看下面这段java程序: public class Test{ public static void main(String[] args){ System.out.println("哈哈 ...
- Infor EAM:注重行业属性,实现对轨道交通线性资产的可视化管理
Infor EAM:注重行业属性,实现对轨道交通线性资产的可视化管理 企业得利,一要开源,二要节流.而企业资产管理的目的,也正是从资产的角度出发,一方面通过相关资源与活动的合理安排提高设备可利用率.增 ...
- golang 指针类型学习
对于指针类型不安全编程,通过指针值以及偏移量操作slice私有属性 // 通过指针值获取切片 func TestGetPrivate(t *testing.T) { s := []int{1, 2, ...