一些JAVA工具类集合，可用于项目使用（源码）

# YY UTILS. > Maven support, only [oschina](http://maven.oschina.net) ```xml <dependency> <groupId>net.caiban</groupId> <artifactId>yy-utils</artifactId> <version>1.1.8</version> </dependency> ``` ## Utils List 1. [MD5](#MD5) 1. [HttpRequestUtil](#HttpRequestUtil) 2. [JedisUtil](#JedisUtil) 3. [MemcachedUtils](#MemcachedUtils) ### MD5 Class: ``net.caiban.utils.MD5`` Description: > Encode string use MD5 method. Example: ```java try { MD5.encode("be-encoded-string", MD5.LENGTH_16); } catch (NoSuchAlgorithmException e) { e.printStackTrace(); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } ``` ### HttpRequestUtil Class: ``net.caiban.utils.http.HttpRequestUtil`` Description: > Request http connection, only get/post method provide. Example: ```java //Get method, return as String. String respGet = HttpRequestUtil.httpGet("http://www.example.com"); //Post method, return as String. String respPost = HttpRequestUtil.httpPost("http://www.example.com"); //Post method with parameters. List<NameValuePair> params = new ArrayList<NameValuePair>(); params.add(new BasicNameValuePair("key", "value")); String respPostWithParam = HttpRequestUtil.httpPost("http://www.example.com", params); ``` > :exclamation: Allways do this while start and shutdown server recommend. ```java //start server. httpRequestUtil.monitor(); //shutdown server. HttpRequestUtil.shutdown(); ``` ### JedisUtil Class: ``net.caiban.utils.cache.JedisUtil`` Description: > Java redis client which use [Jedis](https://github.com/xetorthio/jedis) project. Example: ```java Jedis jedis = null; try { jedis = JedisUtil.getJedis(); Set<String> tags = jedis.keys("*"); jedis.set("key","value"); // Others of jedis action. } catch (Exception e) { e.printStackTrace(); }finally{ //It's necessary! JedisUtil.getPool().returnResource(jedis); } ``` Startup: > Default redis server properties : ``redis.properties``, or you could init from other properties ( ``JedisUtil.initPool("config.properties")`` or ``JedisUtil.initPool("file:/path/to/config.properties")`` ) when system startup. Config Example: ```properties redis.server=127.0.0.1 redis.server.port=6379 ``` ### MemcachedUtils Class: ``net.caiban.utils.cache.MemcachedUtils`` Description: > Java memcached client. Example: ```java MemcachedUtils.getInstance().getClient().set("user",0,"user profile"); ``` Startup: > Default memcached server properties : ``cache.properties``, you should init client ( ``MemcachedUtils.getInstance().init()`` or ``MemcachedUtils.getInstance().init("config.properties")`` or ``JedisUtil.initPool("file:/path/to/config.properties")`` ) when system startup. Config Example: ```properties memcached.server=127.0.0.1:11211 localhost:11210 ```