spring-session自定义序列化方式

import cn.nsu.edu.web.four.config.BaseStatic;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.type.TypeFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.SerializationException;
import org.springframework.data.redis.serializer.SerializationUtils;
 
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
 
public class SessionSerializer implements RedisSerializer<Object> {
    @Autowired
    private ObjectMapper mapper;
    private Logger logger = LoggerFactory.getLogger(getClass());
    private final String separator = "=";
    private final String classPrefix = "<";
    private final String classSuffix = ">";
    private final String classSeparator = ","; 
    private Pattern pattern; 
    public SessionSerializer() {
        pattern = Pattern.compile("<(.*)>");  
    }
 
    /**
     * 获取class，包含集合类的泛型
     * <p>暂只支持最多两个泛型，同时集合内数据必须为同一个实现类，不可将泛型声明成父类</p>
     *
     * @param obj 将要序列化的对象
     * @return 没有泛型，形式为java.lang.String<>
     * <p>一个泛型，形式为java.lang.String<java.lang.String></p>
     * <p>两个个泛型，形式为java.lang.String<java.lang.String,java.lang.String></p>
     */
    private String getBegin(Object obj) {
        StringBuilder builder = new StringBuilder(obj.getClass().toString().substring(6) + classPrefix);
        if (obj instanceof List) {
            List list = ((List) obj);
            if (!list.isEmpty()) {
                Object temp = list.get(0);
                builder.append(temp.getClass().toString().substring(6));
            }
        } else if (obj instanceof Map) {
            Map map = ((Map) obj);
            Iterator iterator = map.keySet().iterator();
            if (iterator.hasNext()) {
                Object key = iterator.next();
                Object value = map.get(key);
                builder.append(key.getClass().toString().substring(6)).append(classSeparator).append(value.getClass().toString().substring(6));
            }
        } else if (obj instanceof Set) {
            Set set = ((Set) obj);
            Iterator iterator = set.iterator();
 
            if (iterator.hasNext()) {
                Object value = iterator.next();
                builder.append(value.getClass().toString().substring(6));
            }
        }
        builder.append(classSuffix);
        return builder.toString();
    }
 
    @Override
    public byte[] serialize(Object o) throws SerializationException {
        if (o == null)
            return new byte[0];
        try {
            String builder = getBegin(o) +
                    separator +
                    mapper.writeValueAsString(o);
            return builder.getBytes(BaseStatic.CHARSET);
        } catch (UnsupportedEncodingException | JsonProcessingException e) {
            e.printStackTrace();
        }
        return null;
    }
 
    @Override
    public Object deserialize(byte[] bytes) throws SerializationException {
        if (bytes == null || bytes.length == 0) return null;//已被删除的session
        try {
            String temp = new String(bytes, BaseStatic.CHARSET); 
            String cl[] = getClass(temp); 
            if (cl == null) {
                throw new RuntimeException("错误的序列化结果=" + temp);
            }
            if (cl.length == 1) {
                return mapper.readValue(temp.substring(temp.indexOf(separator) + 1), Class.forName(cl[0]));
            } else if (cl.length == 2) {
                TypeFactory factory = mapper.getTypeFactory();
                JavaType type = factory.constructParametricType(Class.forName(cl[0]), Class.forName(cl[1]));
                return mapper.readValue(temp.substring(temp.indexOf(separator) + 1), type);
            } else if (cl.length == 3) {
                TypeFactory factory = mapper.getTypeFactory();
                JavaType type = factory.constructParametricType(Class.forName(cl[0]), Class.forName(cl[1]), Class.forName(cl[2]));
                return mapper.readValue(temp.substring(temp.indexOf(separator) + 1), type);
            }
        } catch (ClassNotFoundException | IOException e) {
            e.printStackTrace();
        }
        return null;
    }
 
    /**
     * 解析字符串，获取class
     * <p>一个类型,java.lang.String<>={}</p>
     * <p>两个类型，后面为泛型,java.lang.String<java.lang.String>={}</p>
     * <p>三个类型，后面为泛型,java.lang.String<java.lang.String,java.lang.String>={}</p>
     *
     * @param value 包含class的字符串
     * @return 返回所有类的数组
     */
    private String[] getClass(String value) {
        int index = value.indexOf(classPrefix);
        if (index != -1) {
            Matcher matcher = pattern.matcher(value.subSequence(index, value.indexOf(classSuffix) + 1));
            if (matcher.find()) {
                String temp = matcher.group(1);
                if (temp.isEmpty()) {//没有泛型
                    return new String[]{value.substring(0, index)};
                } else if (temp.contains(classSeparator)) {//两个泛型
                    int nextIndex = temp.indexOf(classSeparator);
                    return new String[]{
                            value.substring(0, index),
                            temp.substring(0, nextIndex),
                            temp.substring(nextIndex + 1)
                    };
                } else {//一个泛型
                    return new String[]{
                            value.substring(0, index),
                            temp
                    };
                }
            }
        }
        return null;
     }
}

 <bean id="springSessionDefaultRedisSerializer" class="cn.nsu.edu.web.four.session.serializer.SessionSerializer"/>
    <bean id="jedisConnectionFactory"
          class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory" destroy-method="destroy">
        <property name="hostName" value="${redis.host}"/>
        <property name="port" value="${redis.port}"/>
        <property name="timeout" value="${redis.timeout}"/>
        <property name="password" value="${redis.password}"/>
        <property name="database" value="${redis.database}"/>
        <property name="usePool" value="true"/>
        <property name="poolConfig" ref="redisPoolConfig"/> 
    </bean> 
 
    <bean id="redisTemplate" class="org.springframework.data.redis.core.StringRedisTemplate">
        <property name="connectionFactory" ref="jedisConnectionFactory"/>
        <property name="defaultSerializer" ref="springSessionDefaultRedisSerializer"/>
        <!--指定序列化类-->
        <property name="valueSerializer" ref="springSessionDefaultRedisSerializer"/>
        <property name="hashValueSerializer" ref="springSessionDefaultRedisSerializer"/>
    </bean>

 /**
  * Allows ensuring that the session is saved if the response is committed.
  *
  * @author Rob Winch
  * @since 1.0
  */
 private final class SessionRepositoryResponseWrapper
   extends OnCommittedResponseWrapper { 
  private final SessionRepositoryRequestWrapper request;
 
  /**
   * Create a new {@link SessionRepositoryResponseWrapper}.
   * @param request the request to be wrapped
   * @param response the response to be wrapped
   */
  SessionRepositoryResponseWrapper(SessionRepositoryRequestWrapper request,
    HttpServletResponse response) {
   super(response);
   if (request == null) {
    throw new IllegalArgumentException("request cannot be null");
   }
   this.request = request;
  }
 
  @Override
  protected void onResponseCommitted() {
   this.request.commitSession();
  }
 } 
 
OnCommittedResponseWrapper 
abstract class OnCommittedResponseWrapper extends HttpServletResponseWrapper {
 
  /**
  * Calls <code>onResponseCommmitted()</code> with the current contents as long as
  * {@link #disableOnResponseCommitted()} was not invoked.
  */
 private void doOnResponseCommitted() {
  if (!this.disableOnCommitted) {
   onResponseCommitted();
   disableOnResponseCommitted();
  }
 } 
} 

chain.doFilter(wrappedRequest, response); 
}catch (Exception ex){
logger.error("xxf",ex);
}