- 在写实体类的时候要用引用类型，而不用基本数据类型。因为用基本类型会赋值默认值。而引用类型不会
- 数据库中DateTime时间范围大于TimeStamp。所以用dateTime.TimeStamp,优势在于会自适应目前机器所在的时区。
Mysql主要分为两种引擎。
一种是InnoDB,一种是MYISAM。MYISAM
- InnoDB支持数据行锁定，MyISAM不支持行锁定，只支持锁定整个表。
- MyISAM不支持事务，而InnoDB支持
- InnoDB支持外键，MyISAM不支持。
- InnoDB的主键范围更大，最大是MyISAM的2倍
- InnoDB在写的性能高
- MYISAM读的性能高
SSM重点知识
SpringMVC:DispatcherServlet
它主要用来拦截符合要求的外部请求，并把请求分发到不同的控制器中去，根据不同的控制器处理后的结果，生成相应的响应发送到客户端
Spring:IOC和AOP
MyBatis:ORM
LogBack
Thumbnailator
Thumbnailator是一个用来生成图像缩略图的 Java类库，通过很简单的代码即可生成图片缩略图，也可直接对一整个目录的图片生成缩略图。
有了这玩意，就不用在费心思使用Image I/O API,Java 2D API等等来生成缩略图了
public static void main(String[] args) throws IOException {
String basePath = Thread.currentThread().getContextClassLoader().getResource("").getPath();
Thumbnails.of(new File("/soft/ss/img/four.jpg"))
.size(720,1280).watermark(Positions.BOTTOM_RIGHT,ImageIO.read(new File(basePath + "/water.jpg")),0.5f)
.outputQuality(0.8f).toFile("/soft/ss/img/five.jpg");
SUI Mobile
SUI Mobile 是一套基于 Framework7 开发的UI库。它非常轻量、精美，只需要引入我们的CDN文件就可以使用，并且能兼容到 iOS 6.0+ 和 Android 4.0+，非常适合开发跨平台Web App。
kaptcha
验证码工具包
- 在web.xml配置一个servlet，负责生成验证码。
<servlet>
<servlet-name>Kaptcha</servlet-name>
<servlet-class>com.google.code.kaptcha.servlet.KaptchaServlet</servlet-class>
<!-- 是否有边框 -->
<init-param>
<param-name>kaptcha.border</param-name>
<param-value>no</param-value>
</init-param>
<!-- 字体颜色 -->
<init-param>
<param-name>kaptcha.textproducer.font.color</param-name>
<param-value>red</param-value>
</init-param>
<!-- 图片宽度 -->
<init-param>
<param-name>kaptcha.image.width</param-name>
<param-value>135</param-value>
</init-param>
<!-- 使用哪些字符生成验证码 -->
<init-param>
<param-name>kaptcha.textproducer.char.string</param-name>
<param-value>ACDEFHKPRSTWX345679</param-value>
</init-param>
<!-- 图片高度 -->
<init-param>
<param-name>kaptcha.image.height</param-name>
<param-value>50</param-value>
</init-param>
<!-- 字体大小 -->
<init-param>
<param-name>kaptcha.textproducer.font.size</param-name>
<param-value>43</param-value>
</init-param>
<!-- 干扰线的颜色 -->
<init-param>
<param-name>kaptcha.noise.color</param-name>
<param-value>black</param-value>
</init-param>
<!-- 字符个数 -->
<init-param>
<param-name>kaptcha.textproducer.char.length</param-name>
<param-value>4</param-value>
</init-param>
<!-- 使用哪些字体 -->
<init-param>
<param-name>kaptcha.textproducer.font.names</param-name>
<param-value>Arial</param-value>
</init-param>
</servlet>
mysql主从分离实现
读写分离。
- 数据库层面的主从配置实现
对关键配置信息设置加密
DES加密算法
public class DESUtils {
private static Key key;
private static String KEY_STR = "myKey";
private static String CHARSETNAME = "UTF-8";
private static String ALGORITHM = "DES";
static {
try {
KeyGenerator generator = KeyGenerator.getInstance(ALGORITHM);
SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG");
secureRandom.setSeed(KEY_STR.getBytes());
generator.init(secureRandom);
key = generator.generateKey();
generator = null;
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public static String getEncryptString(String str) {
BASE64Encoder base64encoder = new BASE64Encoder();
try {
byte[] bytes = str.getBytes(CHARSETNAME);
Cipher cipher = Cipher.getInstance(ALGORITHM);
cipher.init(Cipher.ENCRYPT_MODE, key);
byte[] doFinal = cipher.doFinal(bytes);
return base64encoder.encode(doFinal);
} catch (Exception e) {
// TODO: handle exception
throw new RuntimeException(e);
}
}
public static String getDecryptString(String str) {
BASE64Decoder base64decoder = new BASE64Decoder();
try {
byte[] bytes = base64decoder.decodeBuffer(str);
Cipher cipher = Cipher.getInstance(ALGORITHM);
cipher.init(Cipher.DECRYPT_MODE, key);
byte[] doFinal = cipher.doFinal(bytes);
return new String(doFinal, CHARSETNAME);
} catch (Exception e) {
// TODO: handle exception
throw new RuntimeException(e);
}
}
public static void main(String[] args) {
System.out.println(getEncryptString("root"));
System.out.println(getEncryptString("230230"));
System.out.println(getEncryptString("wxd7f6c5b8899fba83"));
System.out.println(getEncryptString("665ae80dba31fc91ab6191e7da4d676d"));
}
}
public class EncryptPropertyPlaceholderConfigurer extends
PropertyPlaceholderConfigurer {
private String[] encryptPropNames = { "jdbc.username", "jdbc.password" };
@Override
protected String convertProperty(String propertyName, String propertyValue) {
if (isEncryptProp(propertyName)) {
String decryptValue = DESUtils.getDecryptString(propertyValue);
return decryptValue;
} else {
return propertyValue;
}
}
private boolean isEncryptProp(String propertyName) {
for (String encryptpropertyName : encryptPropNames) {
if (encryptpropertyName.equals(propertyName))
return true;
}
return false;
}
}
在spring-dao.xml设置
<bean class="加密算法类">
<property name="locations">
<list>
<value>classpath:jdbc.properties</value>
</list>
</property>
<property name="fileEncoding" value="UTF-8"/>
</bean>
Redis 高性能缓存数据库
- 什么是Redis和Jedis
- Redis配置
- Jedis基本通用函数使用
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.2.xsd">
<!--Redis连接池设置-->
<bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">
<property name="maxTotal" value="${redis.pool.maxActive}" />
<property name="maxIdle" value="${redis.pool.maxIdle}" />
<property name="maxWaitMillis" value="${redis.pool.maxWait}" />
<property name="testOnBorrow" value="${redis.pool.testOnBorrow}" />
</bean>
<!--创建连接池并配置-->
<bean id="jedisWritePool" class="com.imooc.myo2o.cache.JedisPoolWriper"
depends-on="jedisPoolConfig">
<constructor-arg index="0" ref="jedisPoolConfig" />
<constructor-arg index="1" value="${redis.hostname}" />
<constructor-arg index="2" value="${redis.port}" type="int" />
</bean>
<bean id="jedisKeys" class="com.imooc.myo2o.cache.JedisUtil$Keys"
scope="singleton">
<constructor-arg ref="jedisUtil"></constructor-arg>
</bean>
<bean id="jedisStrings" class="com.imooc.myo2o.cache.JedisUtil$Strings"
scope="singleton">
<constructor-arg ref="jedisUtil"></constructor-arg>
</bean>
<bean id="jedisLists" class="com.imooc.myo2o.cache.JedisUtil$Lists"
scope="singleton">
<constructor-arg ref="jedisUtil"></constructor-arg>
</bean>
<bean id="jedisSets" class="com.imooc.myo2o.cache.JedisUtil$Sets"
scope="singleton">
<constructor-arg ref="jedisUtil"></constructor-arg>
</bean>
<bean id="jedisHash" class="com.imooc.myo2o.cache.JedisUtil$Hash"
scope="singleton">
<constructor-arg ref="jedisUtil"></constructor-arg>
</bean>
<!--创建Redis工具类，封装好Redis的连接进行相关操作-->
<bean id="jedisUtil" class="com.imooc.myo2o.cache.JedisUtil"
scope="singleton">
<property name="jedisPool">
<ref bean="jedisWritePool" />
</property>
</bean>
</beans>
/**
* 强指定redis的JedisPool接口构造函数，这样才能在centos成功创建jedispool
*
* @author xiangze
*
*/
public class JedisPoolWriper {
private JedisPool jedisPool;
public JedisPoolWriper(final JedisPoolConfig poolConfig, final String host,
final int port) {
try {
jedisPool = new JedisPool(poolConfig, host, port);
} catch (Exception e) {
e.printStackTrace();
}
}
//获取连接池对象
public JedisPool getJedisPool() {
return jedisPool;
}
public void setJedisPool(JedisPool jedisPool) {
this.jedisPool = jedisPool;
}
}
public class JedisUtil {
/**
* 缓存生存时间
*/
private final int expire = 60000;
/** 操作Key的方法 */
public Keys KEYS;
/** 对存储结构为String类型的操作 */
public Strings STRINGS;
/** 对存储结构为List类型的操作 */
public Lists LISTS;
/** 对存储结构为Set类型的操作 */
public Sets SETS;
/** 对存储结构为HashMap类型的操作 */
public Hash HASH;
private JedisPool jedisPool;
public JedisPool getJedisPool() {
return jedisPool;
}
public void setJedisPool(JedisPoolWriper jedisPoolWriper) {
this.jedisPool = jedisPoolWriper.getJedisPool();
}
public JedisPool getPool() {
return jedisPool;
}
/**
* 从jedis连接池中获取获取jedis对象
*
* @return
*/
public Jedis getJedis() {
return jedisPool.getResource();
}
/**
* 设置过期时间
*
* @author ruan 2013-4-11
* @param key
* @param seconds
*/
public void expire(String key, int seconds) {
if (seconds <= 0) {
return;
}
Jedis jedis = getJedis();
jedis.expire(key, seconds);
jedis.close();
}
/**
* 设置默认过期时间
*
* @author ruan 2013-4-11
* @param key
*/
public void expire(String key) {
expire(key, expire);
}
// *******************************************Keys*******************************************//
public class Keys {
/**
* 清空所有key
*/
public String flushAll() {
Jedis jedis = getJedis();
String stata = jedis.flushAll();
jedis.close();
return stata;
}
/**
* 更改key
*
* @param String
* oldkey
* @param String
* newkey
* @return 状态码
* */
public String rename(String oldkey, String newkey) {
return rename(SafeEncoder.encode(oldkey),
SafeEncoder.encode(newkey));
}
/**
* 更改key,仅当新key不存在时才执行
*
* @param String
* oldkey
* @param String
* newkey
* @return 状态码
* */
public long renamenx(String oldkey, String newkey) {
Jedis jedis = getJedis();
long status = jedis.renamenx(oldkey, newkey);
jedis.close();
return status;
}
/**
* 更改key
*
* @param String
* oldkey
* @param String
* newkey
* @return 状态码
* */
public String rename(byte[] oldkey, byte[] newkey) {
Jedis jedis = getJedis();
String status = jedis.rename(oldkey, newkey);
jedis.close();
return status;
}
/**
* 设置key的过期时间，以秒为单位
*
* @param String
* key
* @param 时间
* ,已秒为单位
* @return 影响的记录数
* */
public long expired(String key, int seconds) {
Jedis jedis = getJedis();
long count = jedis.expire(key, seconds);
jedis.close();
return count;
}
/**
* 设置key的过期时间,它是距历元（即格林威治标准时间 1970 年 1 月 1 日的 00:00:00，格里高利历）的偏移量。
*
* @param String
* key
* @param 时间
* ,已秒为单位
* @return 影响的记录数
* */
public long expireAt(String key, long timestamp) {
Jedis jedis = getJedis();
long count = jedis.expireAt(key, timestamp);
jedis.close();
return count;
}
/**
* 查询key的过期时间
*
* @param String
* key
* @return 以秒为单位的时间表示
* */
public long ttl(String key) {
// ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
long len = sjedis.ttl(key);
sjedis.close();
return len;
}
/**
* 取消对key过期时间的设置
*
* @param key
* @return 影响的记录数
* */
public long persist(String key) {
Jedis jedis = getJedis();
long count = jedis.persist(key);
jedis.close();
return count;
}
/**
* 删除keys对应的记录,可以是多个key
*
* @param String
* ... keys
* @return 删除的记录数
* */
public long del(String... keys) {
Jedis jedis = getJedis();
long count = jedis.del(keys);
jedis.close();
return count;
}
/**
* 删除keys对应的记录,可以是多个key
*
* @param String
* ... keys
* @return 删除的记录数
* */
public long del(byte[]... keys) {
Jedis jedis = getJedis();
long count = jedis.del(keys);
jedis.close();
return count;
}
/**
* 判断key是否存在
*
* @param String
* key
* @return boolean
* */
public boolean exists(String key) {
// ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
boolean exis = sjedis.exists(key);
sjedis.close();
return exis;
}
/**
* 对List,Set,SortSet进行排序,如果集合数据较大应避免使用这个方法
*
* @param String
* key
* @return List<String> 集合的全部记录
* **/
public List<String> sort(String key) {
// ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
List<String> list = sjedis.sort(key);
sjedis.close();
return list;
}
/**
* 对List,Set,SortSet进行排序或limit
*
* @param String
* key
* @param SortingParams
* parame 定义排序类型或limit的起止位置.
* @return List<String> 全部或部分记录
* **/
public List<String> sort(String key, SortingParams parame) {
// ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
List<String> list = sjedis.sort(key, parame);
sjedis.close();
return list;
}
/**
* 返回指定key存储的类型
*
* @param String
* key
* @return String string|list|set|zset|hash
* **/
public String type(String key) {
// ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
String type = sjedis.type(key);
sjedis.close();
return type;
}
/**
* 查找所有匹配给定的模式的键
*
* @param String
* key的表达式,*表示多个，？表示一个
* */
public Set<String> keys(String pattern) {
Jedis jedis = getJedis();
Set<String> set = jedis.keys(pattern);
jedis.close();
return set;
}
}
// *******************************************Sets*******************************************//
public class Sets {
/**
* 向Set添加一条记录，如果member已存在返回0,否则返回1
*
* @param String
* key
* @param String
* member
* @return 操作码,0或1
* */
public long sadd(String key, String member) {
Jedis jedis = getJedis();
long s = jedis.sadd(key, member);
jedis.close();
return s;
}
public long sadd(byte[] key, byte[] member) {
Jedis jedis = getJedis();
long s = jedis.sadd(key, member);
jedis.close();
return s;
}
/**
* 获取给定key中元素个数
*
* @param String
* key
* @return 元素个数
* */
public long scard(String key) {
// ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
long len = sjedis.scard(key);
sjedis.close();
return len;
}
/**
* 返回从第一组和所有的给定集合之间的差异的成员
*
* @param String
* ... keys
* @return 差异的成员集合
* */
public Set<String> sdiff(String... keys) {
Jedis jedis = getJedis();
Set<String> set = jedis.sdiff(keys);
jedis.close();
return set;
}
/**
* 这个命令等于sdiff,但返回的不是结果集,而是将结果集存储在新的集合中，如果目标已存在，则覆盖。
*
* @param String
* newkey 新结果集的key
* @param String
* ... keys 比较的集合
* @return 新集合中的记录数
* **/
public long sdiffstore(String newkey, String... keys) {
Jedis jedis = getJedis();
long s = jedis.sdiffstore(newkey, keys);
jedis.close();
return s;
}
/**
* 返回给定集合交集的成员,如果其中一个集合为不存在或为空，则返回空Set
*
* @param String
* ... keys
* @return 交集成员的集合
* **/
public Set<String> sinter(String... keys) {
Jedis jedis = getJedis();
Set<String> set = jedis.sinter(keys);
jedis.close();
return set;
}
/**
* 这个命令等于sinter,但返回的不是结果集,而是将结果集存储在新的集合中，如果目标已存在，则覆盖。
*
* @param String
* newkey 新结果集的key
* @param String
* ... keys 比较的集合
* @return 新集合中的记录数
* **/
public long sinterstore(String newkey, String... keys) {
Jedis jedis = getJedis();
long s = jedis.sinterstore(newkey, keys);
jedis.close();
return s;
}
/**
* 确定一个给定的值是否存在
*
* @param String
* key
* @param String
* member 要判断的值
* @return 存在返回1，不存在返回0
* **/
public boolean sismember(String key, String member) {
// ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
boolean s = sjedis.sismember(key, member);
sjedis.close();
return s;
}
/**
* 返回集合中的所有成员
*
* @param String
* key
* @return 成员集合
* */
public Set<String> smembers(String key) {
// ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
Set<String> set = sjedis.smembers(key);
sjedis.close();
return set;
}
public Set<byte[]> smembers(byte[] key) {
// ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
Set<byte[]> set = sjedis.smembers(key);
sjedis.close();
return set;
}
/**
* 将成员从源集合移出放入目标集合 <br/>
* 如果源集合不存在或不包哈指定成员，不进行任何操作，返回0<br/>
* 否则该成员从源集合上删除，并添加到目标集合，如果目标集合中成员已存在，则只在源集合进行删除
*
* @param String
* srckey 源集合
* @param String
* dstkey 目标集合
* @param String
* member 源集合中的成员
* @return 状态码，1成功，0失败
* */
public long smove(String srckey, String dstkey, String member) {
Jedis jedis = getJedis();
long s = jedis.smove(srckey, dstkey, member);
jedis.close();
return s;
}
/**
* 从集合中删除成员
*
* @param String
* key
* @return 被删除的成员
* */
public String spop(String key) {
Jedis jedis = getJedis();
String s = jedis.spop(key);
jedis.close();
return s;
}
/**
* 从集合中删除指定成员
*
* @param String
* key
* @param String
* member 要删除的成员
* @return 状态码，成功返回1，成员不存在返回0
* */
public long srem(String key, String member) {
Jedis jedis = getJedis();
long s = jedis.srem(key, member);
jedis.close();
return s;
}
/**
* 合并多个集合并返回合并后的结果，合并后的结果集合并不保存<br/>
*
* @param String
* ... keys
* @return 合并后的结果集合
* @see sunionstore
* */
public Set<String> sunion(String... keys) {
Jedis jedis = getJedis();
Set<String> set = jedis.sunion(keys);
jedis.close();
return set;
}
/**
* 合并多个集合并将合并后的结果集保存在指定的新集合中，如果新集合已经存在则覆盖
*
* @param String
* newkey 新集合的key
* @param String
* ... keys 要合并的集合
* **/
public long sunionstore(String newkey, String... keys) {
Jedis jedis = getJedis();
long s = jedis.sunionstore(newkey, keys);
jedis.close();
return s;
}
}
// *******************************************Hash*******************************************//
public class Hash {
/**
* 从hash中删除指定的存储
*
* @param String
* key
* @param String
* fieid 存储的名字
* @return 状态码，1成功，0失败
* */
public long hdel(String key, String fieid) {
Jedis jedis = getJedis();
long s = jedis.hdel(key, fieid);
jedis.close();
return s;
}
public long hdel(String key) {
Jedis jedis = getJedis();
long s = jedis.del(key);
jedis.close();
return s;
}
/**
* 测试hash中指定的存储是否存在
*
* @param String
* key
* @param String
* fieid 存储的名字
* @return 1存在，0不存在
* */
public boolean hexists(String key, String fieid) {
// ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
boolean s = sjedis.hexists(key, fieid);
sjedis.close();
return s;
}
/**
* 返回hash中指定存储位置的值
*
* @param String
* key
* @param String
* fieid 存储的名字
* @return 存储对应的值
* */
public String hget(String key, String fieid) {
// ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
String s = sjedis.hget(key, fieid);
sjedis.close();
return s;
}
public byte[] hget(byte[] key, byte[] fieid) {
// ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
byte[] s = sjedis.hget(key, fieid);
sjedis.close();
return s;
}
/**
* 以Map的形式返回hash中的存储和值
*
* @param String
* key
* @return Map<Strinig,String>
* */
public Map<String, String> hgetAll(String key) {
// ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
Map<String, String> map = sjedis.hgetAll(key);
sjedis.close();
return map;
}
/**
* 添加一个对应关系
*
* @param String
* key
* @param String
* fieid
* @param String
* value
* @return 状态码 1成功，0失败，fieid已存在将更新，也返回0
* **/
public long hset(String key, String fieid, String value) {
Jedis jedis = getJedis();
long s = jedis.hset(key, fieid, value);
jedis.close();
return s;
}
public long hset(String key, String fieid, byte[] value) {
Jedis jedis = getJedis();
long s = jedis.hset(key.getBytes(), fieid.getBytes(), value);
jedis.close();
return s;
}
/**
* 添加对应关系，只有在fieid不存在时才执行
*
* @param String
* key
* @param String
* fieid
* @param String
* value
* @return 状态码 1成功，0失败fieid已存
* **/
public long hsetnx(String key, String fieid, String value) {
Jedis jedis = getJedis();
long s = jedis.hsetnx(key, fieid, value);
jedis.close();
return s;
}
/**
* 获取hash中value的集合
*
* @param String
* key
* @return List<String>
* */
public List<String> hvals(String key) {
// ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
List<String> list = sjedis.hvals(key);
sjedis.close();
return list;
}
/**
* 在指定的存储位置加上指定的数字，存储位置的值必须可转为数字类型
*
* @param String
* key
* @param String
* fieid 存储位置
* @param String
* long value 要增加的值,可以是负数
* @return 增加指定数字后，存储位置的值
* */
public long hincrby(String key, String fieid, long value) {
Jedis jedis = getJedis();
long s = jedis.hincrBy(key, fieid, value);
jedis.close();
return s;
}
/**
* 返回指定hash中的所有存储名字,类似Map中的keySet方法
*
* @param String
* key
* @return Set<String> 存储名称的集合
* */
public Set<String> hkeys(String key) {
// ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
Set<String> set = sjedis.hkeys(key);
sjedis.close();
return set;
}
/**
* 获取hash中存储的个数，类似Map中size方法
*
* @param String
* key
* @return long 存储的个数
* */
public long hlen(String key) {
// ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
long len = sjedis.hlen(key);
sjedis.close();
return len;
}
/**
* 根据多个key，获取对应的value，返回List,如果指定的key不存在,List对应位置为null
*
* @param String
* key
* @param String
* ... fieids 存储位置
* @return List<String>
* */
public List<String> hmget(String key, String... fieids) {
// ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
List<String> list = sjedis.hmget(key, fieids);
sjedis.close();
return list;
}
public List<byte[]> hmget(byte[] key, byte[]... fieids) {
// ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
List<byte[]> list = sjedis.hmget(key, fieids);
sjedis.close();
return list;
}
/**
* 添加对应关系，如果对应关系已存在，则覆盖
*
* @param Strin
* key
* @param Map
* <String,String> 对应关系
* @return 状态，成功返回OK
* */
public String hmset(String key, Map<String, String> map) {
Jedis jedis = getJedis();
String s = jedis.hmset(key, map);
jedis.close();
return s;
}
/**
* 添加对应关系，如果对应关系已存在，则覆盖
*
* @param Strin
* key
* @param Map
* <String,String> 对应关系
* @return 状态，成功返回OK
* */
public String hmset(byte[] key, Map<byte[], byte[]> map) {
Jedis jedis = getJedis();
String s = jedis.hmset(key, map);
jedis.close();
return s;
}
}
// *******************************************Strings*******************************************//
public class Strings {
/**
* 根据key获取记录
*
* @param String
* key
* @return 值
* */
public String get(String key) {
// ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
String value = sjedis.get(key);
sjedis.close();
return value;
}
/**
* 根据key获取记录
*
* @param byte[] key
* @return 值
* */
public byte[] get(byte[] key) {
// ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
byte[] value = sjedis.get(key);
sjedis.close();
return value;
}
/**
* 添加有过期时间的记录
*
* @param String
* key
* @param int seconds 过期时间，以秒为单位
* @param String
* value
* @return String 操作状态
* */
public String setEx(String key, int seconds, String value) {
Jedis jedis = getJedis();
String str = jedis.setex(key, seconds, value);
jedis.close();
return str;
}
/**
* 添加有过期时间的记录
*
* @param String
* key
* @param int seconds 过期时间，以秒为单位
* @param String
* value
* @return String 操作状态
* */
public String setEx(byte[] key, int seconds, byte[] value) {
Jedis jedis = getJedis();
String str = jedis.setex(key, seconds, value);
jedis.close();
return str;
}
/**
* 添加一条记录，仅当给定的key不存在时才插入
*
* @param String
* key
* @param String
* value
* @return long 状态码，1插入成功且key不存在，0未插入，key存在
* */
public long setnx(String key, String value) {
Jedis jedis = getJedis();
long str = jedis.setnx(key, value);
jedis.close();
return str;
}
/**
* 添加记录,如果记录已存在将覆盖原有的value
*
* @param String
* key
* @param String
* value
* @return 状态码
* */
public String set(String key, String value) {
return set(SafeEncoder.encode(key), SafeEncoder.encode(value));
}
/**
* 添加记录,如果记录已存在将覆盖原有的value
*
* @param String
* key
* @param String
* value
* @return 状态码
* */
public String set(String key, byte[] value) {
return set(SafeEncoder.encode(key), value);
}
/**
* 添加记录,如果记录已存在将覆盖原有的value
*
* @param byte[] key
* @param byte[] value
* @return 状态码
* */
public String set(byte[] key, byte[] value) {
Jedis jedis = getJedis();
String status = jedis.set(key, value);
jedis.close();
return status;
}
/**
* 从指定位置开始插入数据，插入的数据会覆盖指定位置以后的数据<br/>
* 例:String str1="123456789";<br/>
* 对str1操作后setRange(key,4,0000)，str1="123400009";
*
* @param String
* key
* @param long offset
* @param String
* value
* @return long value的长度
* */
public long setRange(String key, long offset, String value) {
Jedis jedis = getJedis();
long len = jedis.setrange(key, offset, value);
jedis.close();
return len;
}
/**
* 在指定的key中追加value
*
* @param String
* key
* @param String
* value
* @return long 追加后value的长度
* **/
public long append(String key, String value) {
Jedis jedis = getJedis();
long len = jedis.append(key, value);
jedis.close();
return len;
}
/**
* 将key对应的value减去指定的值，只有value可以转为数字时该方法才可用
*
* @param String
* key
* @param long number 要减去的值
* @return long 减指定值后的值
* */
public long decrBy(String key, long number) {
Jedis jedis = getJedis();
long len = jedis.decrBy(key, number);
jedis.close();
return len;
}
/**
* <b>可以作为获取唯一id的方法</b><br/>
* 将key对应的value加上指定的值，只有value可以转为数字时该方法才可用
*
* @param String
* key
* @param long number 要减去的值
* @return long 相加后的值
* */
public long incrBy(String key, long number) {
Jedis jedis = getJedis();
long len = jedis.incrBy(key, number);
jedis.close();
return len;
}
/**
* 对指定key对应的value进行截取
*
* @param String
* key
* @param long startOffset 开始位置(包含)
* @param long endOffset 结束位置(包含)
* @return String 截取的值
* */
public String getrange(String key, long startOffset, long endOffset) {
// ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
String value = sjedis.getrange(key, startOffset, endOffset);
sjedis.close();
return value;
}
/**
* 获取并设置指定key对应的value<br/>
* 如果key存在返回之前的value,否则返回null
*
* @param String
* key
* @param String
* value
* @return String 原始value或null
* */
public String getSet(String key, String value) {
Jedis jedis = getJedis();
String str = jedis.getSet(key, value);
jedis.close();
return str;
}
/**
* 批量获取记录,如果指定的key不存在返回List的对应位置将是null
*
* @param String
* keys
* @return List<String> 值得集合
* */
public List<String> mget(String... keys) {
Jedis jedis = getJedis();
List<String> str = jedis.mget(keys);
jedis.close();
return str;
}
/**
* 批量存储记录
*
* @param String
* keysvalues 例:keysvalues="key1","value1","key2","value2";
* @return String 状态码
* */
public String mset(String... keysvalues) {
Jedis jedis = getJedis();
String str = jedis.mset(keysvalues);
jedis.close();
return str;
}
/**
* 获取key对应的值的长度
*
* @param String
* key
* @return value值得长度
* */
public long strlen(String key) {
Jedis jedis = getJedis();
long len = jedis.strlen(key);
jedis.close();
return len;
}
}
// *******************************************Lists*******************************************//
public class Lists {
/**
* List长度
*
* @param String
* key
* @return 长度
* */
public long llen(String key) {
return llen(SafeEncoder.encode(key));
}
/**
* List长度
*
* @param byte[] key
* @return 长度
* */
public long llen(byte[] key) {
// ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
long count = sjedis.llen(key);
sjedis.close();
return count;
}
/**
* 覆盖操作,将覆盖List中指定位置的值
*
* @param byte[] key
* @param int index 位置
* @param byte[] value 值
* @return 状态码
* */
public String lset(byte[] key, int index, byte[] value) {
Jedis jedis = getJedis();
String status = jedis.lset(key, index, value);
jedis.close();
return status;
}
/**
* 覆盖操作,将覆盖List中指定位置的值
*
* @param key
* @param int index 位置
* @param String
* value 值
* @return 状态码
* */
public String lset(String key, int index, String value) {
return lset(SafeEncoder.encode(key), index,
SafeEncoder.encode(value));
}
/**
* 在value的相对位置插入记录
*
* @param key
* @param LIST_POSITION
* 前面插入或后面插入
* @param String
* pivot 相对位置的内容
* @param String
* value 插入的内容
* @return 记录总数
* */
public long linsert(String key, LIST_POSITION where, String pivot,
String value) {
return linsert(SafeEncoder.encode(key), where,
SafeEncoder.encode(pivot), SafeEncoder.encode(value));
}
/**
* 在指定位置插入记录
*
* @param String
* key
* @param LIST_POSITION
* 前面插入或后面插入
* @param byte[] pivot 相对位置的内容
* @param byte[] value 插入的内容
* @return 记录总数
* */
public long linsert(byte[] key, LIST_POSITION where, byte[] pivot,
byte[] value) {
Jedis jedis = getJedis();
long count = jedis.linsert(key, where, pivot, value);
jedis.close();
return count;
}
/**
* 获取List中指定位置的值
*
* @param String
* key
* @param int index 位置
* @return 值
* **/
public String lindex(String key, int index) {
return SafeEncoder.encode(lindex(SafeEncoder.encode(key), index));
}
/**
* 获取List中指定位置的值
*
* @param byte[] key
* @param int index 位置
* @return 值
* **/
public byte[] lindex(byte[] key, int index) {
// ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
byte[] value = sjedis.lindex(key, index);
sjedis.close();
return value;
}
/**
* 将List中的第一条记录移出List
*
* @param String
* key
* @return 移出的记录
* */
public String lpop(String key) {
return SafeEncoder.encode(lpop(SafeEncoder.encode(key)));
}
/**
* 将List中的第一条记录移出List
*
* @param byte[] key
* @return 移出的记录
* */
public byte[] lpop(byte[] key) {
Jedis jedis = getJedis();
byte[] value = jedis.lpop(key);
jedis.close();
return value;
}
/**
* 将List中最后第一条记录移出List
*
* @param byte[] key
* @return 移出的记录
* */
public String rpop(String key) {
Jedis jedis = getJedis();
String value = jedis.rpop(key);
jedis.close();
return value;
}
/**
* 向List尾部追加记录
*
* @param String
* key
* @param String
* value
* @return 记录总数
* */
public long lpush(String key, String value) {
return lpush(SafeEncoder.encode(key), SafeEncoder.encode(value));
}
/**
* 向List头部追加记录
*
* @param String
* key
* @param String
* value
* @return 记录总数
* */
public long rpush(String key, String value) {
Jedis jedis = getJedis();
long count = jedis.rpush(key, value);
jedis.close();
return count;
}
/**
* 向List头部追加记录
*
* @param String
* key
* @param String
* value
* @return 记录总数
* */
public long rpush(byte[] key, byte[] value) {
Jedis jedis = getJedis();
long count = jedis.rpush(key, value);
jedis.close();
return count;
}
/**
* 向List中追加记录
*
* @param byte[] key
* @param byte[] value
* @return 记录总数
* */
public long lpush(byte[] key, byte[] value) {
Jedis jedis = getJedis();
long count = jedis.lpush(key, value);
jedis.close();
return count;
}
/**
* 获取指定范围的记录，可以做为分页使用
*
* @param String
* key
* @param long start
* @param long end
* @return List
* */
public List<String> lrange(String key, long start, long end) {
// ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
List<String> list = sjedis.lrange(key, start, end);
sjedis.close();
return list;
}
/**
* 获取指定范围的记录，可以做为分页使用
*
* @param byte[] key
* @param int start
* @param int end 如果为负数，则尾部开始计算
* @return List
* */
public List<byte[]> lrange(byte[] key, int start, int end) {
// ShardedJedis sjedis = getShardedJedis();
Jedis sjedis = getJedis();
List<byte[]> list = sjedis.lrange(key, start, end);
sjedis.close();
return list;
}
/**
* 删除List中c条记录，被删除的记录值为value
*
* @param byte[] key
* @param int c 要删除的数量，如果为负数则从List的尾部检查并删除符合的记录
* @param byte[] value 要匹配的值
* @return 删除后的List中的记录数
* */
public long lrem(byte[] key, int c, byte[] value) {
Jedis jedis = getJedis();
long count = jedis.lrem(key, c, value);
jedis.close();
return count;
}
/**
* 删除List中c条记录，被删除的记录值为value
*
* @param String
* key
* @param int c 要删除的数量，如果为负数则从List的尾部检查并删除符合的记录
* @param String
* value 要匹配的值
* @return 删除后的List中的记录数
* */
public long lrem(String key, int c, String value) {
return lrem(SafeEncoder.encode(key), c, SafeEncoder.encode(value));
}
/**
* 算是删除吧，只保留start与end之间的记录
*
* @param byte[] key
* @param int start 记录的开始位置(0表示第一条记录)
* @param int end 记录的结束位置（如果为-1则表示最后一个，-2，-3以此类推）
* @return 执行状态码
* */
public String ltrim(byte[] key, int start, int end) {
Jedis jedis = getJedis();
String str = jedis.ltrim(key, start, end);
jedis.close();
return str;
}
/**
* 算是删除吧，只保留start与end之间的记录
*
* @param String
* key
* @param int start 记录的开始位置(0表示第一条记录)
* @param int end 记录的结束位置（如果为-1则表示最后一个，-2，-3以此类推）
* @return 执行状态码
* */
public String ltrim(String key, int start, int end) {
return ltrim(SafeEncoder.encode(key), start, end);
}
}
}
SpringMVC拦截器以实现登录验证及权限验证.
spring-web.xml配置
<mvc:interceptors>
<mvc:interceptor>
<mvc:mapping path="/shop/" />
<mvc:exclude-mapping path="/shop/ownerlogin" />
<mvc:exclude-mapping path="/shop/ownerlogincheck" />
<mvc:exclude-mapping path="/shop/logout" />
<mvc:exclude-mapping path="/shop/register" />
<bean id="ShopInterceptor" class="com.imooc.myo2o.interceptor.shop.ShopLoginInterceptor" />
</mvc:interceptor>
<mvc:interceptor>
<mvc:mapping path="/shop/" />
<mvc:exclude-mapping path="/shop/ownerlogin" />
<mvc:exclude-mapping path="/shop/ownerlogincheck" />
<mvc:exclude-mapping path="/shop/register" />
<mvc:exclude-mapping path="/shop/shoplist" />
<mvc:exclude-mapping path="/shop/logout" />
<mvc:exclude-mapping path="/shop/list" />
<mvc:exclude-mapping path="/shop/changepsw" />
<mvc:exclude-mapping path="/shop/changelocalpwd" />
<mvc:exclude-mapping path="/shop/ownerbind" />
<mvc:exclude-mapping path="/shop/bindlocalauth" />
<mvc:exclude-mapping path="/shop/shopmanage" />
<mvc:exclude-mapping path="/shop/shopedit" />
<mvc:exclude-mapping path="/shop/getshopbyid" />
<mvc:exclude-mapping path="/shop/getshopinitinfo" />
<mvc:exclude-mapping path="/shop/registershop" />
<bean id="ShopPermissionInterceptor"
class="com.imooc.myo2o.interceptor.shop.ShopPermissionInterceptor" />
</mvc:interceptor>
<mvc:interceptor>
<mvc:mapping path="/superadmin/**" />
<mvc:exclude-mapping path="/superadmin/login" />
<mvc:exclude-mapping path="/superadmin/logincheck" />
<mvc:exclude-mapping path="/superadmin/main" />
<mvc:exclude-mapping path="/superadmin/top" />
<bean id="SuperAdminInterceptor"
class="com.imooc.myo2o.interceptor.superadmin.SuperAdminLoginInterceptor" />
</mvc:interceptor>
</mvc:interceptors>
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