Java与php共享Memcached存储数据中的问题与解决方法
Java与php共享Memcached存储数据中的问题与解决方法
php写入的数据java读不出来,java写入的数据php读取乱码;
如果你根据php提供的memcache扩展协议来自行编写java memcached client将不会有问题,我们这里提到的是使用
java的 MemCachedClient 包;
php_extension: php_memcache.dll / memcache.so java_jar: MemCachedClient [com.danga.MemCached.*]
解决方案:
经过查看MemCachedClient源码,发现是 set 时 flags不同,java是根据存储值类型来订flags的。
public static final int MARKER_BYTE = 1; public static final int MARKER_BOOLEAN = 8192; public static final int MARKER_INTEGER = 4; public static final int MARKER_LONG = 16384; public static final int MARKER_CHARACTER = 16; public static final int MARKER_STRING = 32; public static final int MARKER_STRINGBUFFER = 64; public static final int MARKER_FLOAT = 128; public static final int MARKER_SHORT = 256; public static final int MARKER_DOUBLE = 512; public static final int MARKER_DATE = 1024; public static final int MARKER_STRINGBUILDER = 2048; public static final int MARKER_BYTEARR = 4096;
为了方便,两者间的数据转换使用JSON格式;
php与java在存储的时候值类型均要求为String类型,
并且php在$mem->set(key,value,32,expire);加粗部门要注意,这个是必须的。
然后php写入的数据,java那边就能够顺利读取了,当php写入array,object时,java读取后json.decode就OK了。

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