Java与php共享Memcached存储数据中的有关问题与解决办法
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.sojava_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。
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
1666
14
1426
52
1328
25
1273
29
1255
24
Detailed explanation of the method of converting int type to bytes in PHP
Mar 06, 2024 pm 06:18 PM
Detailed explanation of the method of converting int type to byte in PHP In PHP, we often need to convert the integer type (int) to the byte (Byte) type, such as when dealing with network data transmission, file processing, or encryption algorithms. This article will introduce in detail how to convert the int type to the byte type and provide specific code examples. 1. The relationship between int type and byte In the computer field, the basic data type int represents an integer, while byte (Byte) is a computer storage unit, usually 8-bit binary data
The difference between final, finally, and finalize in Java
Feb 19, 2024 pm 12:16 PM
The difference between final, finally, and finalize in Java requires specific code examples. In Java programming, you often encounter the three keywords final, finally, and finalize. Although they are spelled similarly, they have different meanings and usages. This article will explain the differences between these three keywords in detail and give code examples to help readers better understand. 1. Final keyword The final keyword can be used for classes, methods and variables. Its function is to make the modified class
In Java, is it possible to define a constant using only the final keyword?
Sep 20, 2023 pm 04:17 PM
A constant variable is a variable whose value is fixed and only one copy exists in the program. Once you declare a constant variable and assign a value to it, you cannot change its value again throughout the program. Unlike other languages, Java does not directly support constants. However, you can still create a constant by declaring a variable static and final. Static - Once you declare a static variable, they will be loaded into memory at compile time, i.e. only one copy will be available. Final - Once you declare a final variable, its value cannot be modified. Therefore, you can create a constant in Java by declaring the instance variable as static and final. Example Demonstration classData{&am
C++ program to convert double type variable to int type
Aug 25, 2023 pm 08:25 PM
In C++, variables of type int can only hold positive or negative integer values; they cannot hold decimal values. There are float and double values available for this purpose. The double data type was created to store decimals up to seven digits after the decimal point. Conversion of an integer to a double data type can be done automatically by the compiler (called an "implicit" conversion), or it can be explicitly requested by the programmer from the compiler (called an "explicit" conversion). In the following sections, we'll cover various conversion methods. Implicit conversions The compiler performs implicit type conversions automatically. To achieve this, two variables are required - one of floating point type and the other of integer type. When we simply assign a floating point value or variable to an integer variable, the compiler takes care of all the other things
What is the difference between the developer version and the public version of iOS?
Mar 01, 2024 pm 12:55 PM
Every year before Apple releases a new major version of iOS and macOS, users can download the beta version several months in advance and experience it first. Since the software is used by both the public and developers, Apple has launched developer and public versions, which are public beta versions of the developer beta version, for both. What is the difference between the developer version and the public version of iOS? Literally speaking, the developer version is a developer test version, and the public version is a public test version. The developer version and the public version target different audiences. The developer version is used by Apple for testing by developers. You need an Apple developer account to download and upgrade it.
What is the value range of int32?
Aug 11, 2023 pm 02:53 PM
The value range of int32 is from -2 to the 31st power to 2 to the 31st power minus 1, that is, -2147483648 to 2147483647. int32 is a signed integer type, which means it can represent positive numbers, negative numbers, and zero. It uses 1 bit to represent the sign bit, and the remaining 31 bits are used to represent the numerical value. Since one bit is used to represent the sign bit, the effective number of int32 bits is 31.
How to convert int to string type in go language
Jun 04, 2021 pm 03:56 PM
Conversion method: 1. Use the Itoa() function, the syntax "strconv.Itoa(num)"; 2. Use the FormatInt() function to convert int type data into the specified base and return it in the form of a string, the syntax "strconv .FormatInt(num,10)".
How many numbers does java int have?
Mar 06, 2023 pm 04:09 PM
In Java, int is a 32-bit signed data type, and its variables require 32-bit memory; the valid range of the int data type is -2147483648 to 2147483647, and all integers in this range are called integer literals. An integer literal can be assigned to an int variable, such as "int num1 = 21;".
