SSM项目知识点

2018-06-19  本文已影响0人  随心者随心行

Mysql主要分为两种引擎。

一种是InnoDB,一种是MYISAM。MYISAM

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


<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。

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


<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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