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創(chuàng)新互聯(lián)Memcached教程：Java連接Memcached服務(wù)

Java 連接 Memcached 服務(wù)

使用 Java 程序連接 Memcached，需要在你的 classpath 中添加 Memcached jar 包。

成都創(chuàng)新互聯(lián)專(zhuān)注為客戶(hù)提供全方位的互聯(lián)網(wǎng)綜合服務(wù)，包含不限于成都網(wǎng)站建設(shè)、成都做網(wǎng)站、余杭網(wǎng)絡(luò)推廣、重慶小程序開(kāi)發(fā)、余杭網(wǎng)絡(luò)營(yíng)銷(xiāo)、余杭企業(yè)策劃、余杭品牌公關(guān)、搜索引擎seo、人物專(zhuān)訪(fǎng)、企業(yè)宣傳片、企業(yè)代運(yùn)營(yíng)等，從售前售中售后，我們都將竭誠(chéng)為您服務(wù)，您的肯定，是我們最大的嘉獎(jiǎng)；成都創(chuàng)新互聯(lián)為所有大學(xué)生創(chuàng)業(yè)者提供余杭建站搭建服務(wù)，24小時(shí)服務(wù)熱線(xiàn)：18980820575，官方網(wǎng)址：www.cdcxhl.com

本站 jar 包下載地址：spymemcached-2.10.3.jar。

Google Code jar 包下載地址：spymemcached-2.10.3.jar（需要科學(xué)上網(wǎng)）。

以下程序假定 Memcached 服務(wù)的主機(jī)為 127.0.0.1，端口為 11211。

連接實(shí)例

Java 連接 Memcached

MemcachedJava.java 文件：

import

net
.
spy
.
memcached
.
MemcachedClient
;
import

java
.
net
.*;
public

class

MemcachedJava

{

public

static

void

main
(
String
[
]

args
)

{

try
{

//
本地連接 Memcached 服務(wù)


MemcachedClient

mcc
=
new

MemcachedClient
(
new

InetSocketAddress
(
"
127.0.0.1
"
,
11211
)
)
;
System
.
out
.
println
(
"
Connection to server successful.
"
)
;
//
關(guān)閉連接


mcc
.
shutdown
(
)
;
}
catch
(
Exception

ex
)
{

System
.
out
.
println
(

ex
.
getMessage
(
)

)
;
}

}

}

該程序中我們使用 InetSocketAddress 連接 IP 為 127.0.0.1 端口 為 11211 的 memcached 服務(wù)。

執(zhí)行以上代碼，如果連接成功會(huì)輸出以下信息：

Connection to server successful.

set 操作實(shí)例

以下使用 java.util.concurrent.Future 來(lái)存儲(chǔ)數(shù)據(jù)

MemcachedJava.java 文件：

import

java
.
net
.
InetSocketAddress
;
import

java
.
util
.
concurrent
.
Future
;
import

net
.
spy
.
memcached
.
MemcachedClient
;
public

class

MemcachedJava

{

public

static

void

main
(
String
[
]

args
)

{

try
{

//
連接本地的 Memcached 服務(wù)


MemcachedClient

mcc
=
new

MemcachedClient
(
new

InetSocketAddress
(
"
127.0.0.1
"
,
11211
)
)
;
System
.
out
.
println
(
"
Connection to server successful.
"
)
;
//
存儲(chǔ)數(shù)據(jù)


Future

fo
=
mcc
.
set
(
"
runoob
"
,
900
,
"
Free Education
"
)
;
//
查看存儲(chǔ)狀態(tài)


System
.
out
.
println
(
"
set status:
"
+
fo
.
get
(
)
)
;
//
輸出值


System
.
out
.
println
(
"
runoob value in cache -
"
+
mcc
.
get
(
"
runoob
"
)
)
;
//
關(guān)閉連接


mcc
.
shutdown
(
)
;
}
catch
(
Exception

ex
)
{

System
.
out
.
println
(

ex
.
getMessage
(
)

)
;
}

}

}

執(zhí)行程序，輸出結(jié)果為：

Connection to server successful.
set status:true
runoob value in cache - Free Education

add 操作實(shí)例

MemcachedJava.java 文件：

import

java
.
net
.
InetSocketAddress
;
import

java
.
util
.
concurrent
.
Future
;
import

net
.
spy
.
memcached
.
MemcachedClient
;
public

class

MemcachedJava

{

public

static

void

main
(
String
[
]

args
)

{

try
{

//
連接本地的 Memcached 服務(wù)


MemcachedClient

mcc
=
new

MemcachedClient
(
new

InetSocketAddress
(
"
127.0.0.1
"
,
11211
)
)
;
System
.
out
.
println
(
"
Connection to server successful.
"
)
;
//
添加數(shù)據(jù)


Future

fo
=
mcc
.
set
(
"
runoob
"
,
900
,
"
Free Education
"
)
;
//
打印狀態(tài)


System
.
out
.
println
(
"
set status:
"
+
fo
.
get
(
)
)
;
//
輸出


System
.
out
.
println
(
"
runoob value in cache -
"
+
mcc
.
get
(
"
runoob
"
)
)
;
//
添加


fo
=
mcc
.
add
(
"
runoob
"
,
900
,
"
memcached
"
)
;
//
打印狀態(tài)


System
.
out
.
println
(
"
add status:
"
+
fo
.
get
(
)
)
;
//
添加新key


fo
=
mcc
.
add
(
"
runoob
"
,
900
,
"
All Free Compilers
"
)
;
//
打印狀態(tài)


System
.
out
.
println
(
"
add status:
"
+
fo
.
get
(
)
)
;
//
輸出


System
.
out
.
println
(
"
runoob value in cache -
"
+
mcc
.
get
(
"
runoob
"
)
)
;
//
關(guān)閉連接


mcc
.
shutdown
(
)
;
}
catch
(
Exception

ex
)
{

System
.
out
.
println
(
ex
.
getMessage
(
)
)
;
}

}

}

replace 操作實(shí)例

MemcachedJava.java 文件：

import

java
.
net
.
InetSocketAddress
;
import

java
.
util
.
concurrent
.
Future
;
import

net
.
spy
.
memcached
.
MemcachedClient
;
public

class

MemcachedJava

{

public

static

void

main
(
String
[
]

args
)

{

try

{

//
連接本地的 Memcached 服務(wù)


MemcachedClient

mcc
=
new

MemcachedClient
(
new

InetSocketAddress
(
"
127.0.0.1
"
,
11211
)
)
;
System
.
out
.
println
(
"
Connection to server successful.
"
)
;
//
添加第一個(gè) key=》value 對(duì)


Future

fo
=
mcc
.
set
(
"
runoob
"
,
900
,
"
Free Education
"
)
;
//
輸出執(zhí)行 add 方法后的狀態(tài)


System
.
out
.
println
(
"
add status:
"
+
fo
.
get
(
)
)
;
//
獲取鍵對(duì)應(yīng)的值


System
.
out
.
println
(
"
runoob value in cache -
"
+
mcc
.
get
(
"
runoob
"
)
)
;
//
添加新的 key


fo
=
mcc
.
replace
(
"
runoob
"
,
900
,
"
Largest Tutorials' Library
"
)
;
//
輸出執(zhí)行 set 方法后的狀態(tài)


System
.
out
.
println
(
"
replace status:
"
+
fo
.
get
(
)
)
;
//
獲取鍵對(duì)應(yīng)的值


System
.
out
.
println
(
"
runoob value in cache -
"
+
mcc
.
get
(
"
runoob
"
)
)
;
//
關(guān)閉連接


mcc
.
shutdown
(
)
;
}
catch
(
Exception

ex
)
{

System
.
out
.
println
(

ex
.
getMessage
(
)

)
;
}

}

}

append 操作實(shí)例

MemcachedJava.java 文件：

import

java
.
net
.
InetSocketAddress
;
import

java
.
util
.
concurrent
.
Future
;
import

net
.
spy
.
memcached
.
MemcachedClient
;
public

class

MemcachedJava

{

public

static

void

main
(
String
[
]

args
)

{

try
{

//
連接本地的 Memcached 服務(wù)


MemcachedClient

mcc
=
new

MemcachedClient
(
new

InetSocketAddress
(
"
127.0.0.1
"
,
11211
)
)
;
System
.
out
.
println
(
"
Connection to server successful.
"
)
;
//
添加數(shù)據(jù)


Future

fo
=
mcc
.
set
(
"
runoob
"
,
900
,
"
Free Education
"
)
;
//
輸出執(zhí)行 set 方法后的狀態(tài)


System
.
out
.
println
(
"
set status:
"
+
fo
.
get
(
)
)
;
//
獲取鍵對(duì)應(yīng)的值


System
.
out
.
println
(
"
runoob value in cache -
"
+
mcc
.
get
(
"
runoob
"
)
)
;
//
對(duì)存在的key進(jìn)行數(shù)據(jù)添加操作


fo
=
mcc
.
append
(
"
runoob
"
,
900
,
"
for All
"
)
;
//
輸出執(zhí)行 set 方法后的狀態(tài)


System
.
out
.
println
(
"
append status:
"
+
fo
.
get
(
)
)
;
//
獲取鍵對(duì)應(yīng)的值


System
.
out
.
println
(
"
runoob value in cache -
"
+
mcc
.
get
(
"
runoob
"
)
)
;
//
關(guān)閉連接


mcc
.
shutdown
(
)
;
}
catch
(
Exception

ex
)

{

System
.
out
.
println
(
ex
.
getMessage
(
)
)
; ]
}

}

prepend 操作實(shí)例

MemcachedJava.java 文件：

import

java
.
net
.
InetSocketAddress
;
import

java
.
util
.
concurrent
.
Future
;
import

net
.
spy
.
memcached
.
MemcachedClient
;
public

class

MemcachedJava

{

public

static

void

main
(
String
[
]

args
)

{

try
{

//
連接本地的 Memcached 服務(wù)


MemcachedClient

mcc
=
new

MemcachedClient
(
new

InetSocketAddress
(
"
127.0.0.1
"
,
11211
)
)
;
System
.
out
.
println
(
"
Connection to server successful.
"
)
;
//
添加數(shù)據(jù)


Future

fo
=
mcc
.
set
(
"
runoob
"
,
900
,
"
Education for All
"
)
;
//
輸出執(zhí)行 set 方法后的狀態(tài)


System
.
out
.
println
(
"
set status:
"
+
fo
.
get
(
)
)
;
//
獲取鍵對(duì)應(yīng)的值


System
.
out
.
println
(
"
runoob value in cache -
"
+
mcc
.
get
(
"
runoob
"
)
)
;
//
對(duì)存在的key進(jìn)行數(shù)據(jù)添加操作


fo
=
mcc
.
prepend
(
"
runoob
"
,
900
,
"
Free
"
)
;
//
輸出執(zhí)行 set 方法后的狀態(tài)


System
.
out
.
println
(
"
prepend status:
"
+
fo
.
get
(
)
)
;
//
獲取鍵對(duì)應(yīng)的值


System
.
out
.
println
(
"
runoob value in cache -
"
+
mcc
.
get
(
"
runoob
"
)
)
;
//
關(guān)閉連接


mcc
.
shutdown
(
)
;
}
catch
(
Exception

ex
)

{

System
.
out
.
println
(
ex
.
getMessage
(
)
)
;
}

}

}

CAS 操作實(shí)例

MemcachedJava.java 文件：

import

java
.
net
.
InetSocketAddress
;
import

java
.
util
.
concurrent
.
Future
;
import

net
.
spy
.
memcached
.
CASValue
;
import

net
.
spy
.
memcached
.
CASResponse
;
import

net
.
spy
.
memcached
.
MemcachedClient
;
public

class

MemcachedJava

{

public

static

void

main
(
String
[
]

args
)

{

try
{

//
連接本地的 Memcached 服務(wù)


MemcachedClient

mcc
=
new

MemcachedClient
(
new

InetSocketAddress
(
"
127.0.0.1
"
,
11211
)
)
;
System
.
out
.
println
(
"
Connection to server successful.
"
)
;
//
添加數(shù)據(jù)


Future

fo
=
mcc
.
set
(
"
runoob
"
,
900
,
"
Free Education
"
)
;
//
輸出執(zhí)行 set 方法后的狀態(tài)


System
.
out
.
println
(
"
set status:
"
+
fo
.
get
(
)
)
;
//
使用 get 方法獲取數(shù)據(jù)


System
.
out
.
println
(
"
runoob value in cache -
"
+
mcc
.
get
(
"
runoob
"
)
)
;
//
通過(guò) gets 方法獲取 CAS token（令牌）


CASValue

casValue
=
mcc
.
gets
(
"
runoob
"
)
;
//
輸出 CAS token（令牌） 值


System
.
out
.
println
(
"
CAS token -
"
+
casValue
)
;
//
嘗試使用cas方法來(lái)更新數(shù)據(jù)


CASResponse

casresp
=
mcc
.
cas
(
"
runoob
"
,
casValue
.
getCas
(
)
,
900
,
"
Largest Tutorials-Library
"
)
;
//
輸出 CAS 響應(yīng)信息


System
.
out
.
println
(
"
CAS Response -
"
+
casresp
)
;
//
輸出值


System
.
out
.
println
(
"
runoob value in cache -
"
+
mcc
.
get
(
"
runoob
"
)
)
;
//
關(guān)閉連接


mcc
.
shutdown
(
)
;
}
catch
(
Exception

ex
)

{

System
.
out
.
println
(
ex
.
getMessage
(
)
)
;
}

}

}

get 操作實(shí)例

MemcachedJava.java 文件：

import

java
.
net
.
InetSocketAddress
;
import

java
.
util
.
concurrent
.
Future
;
import

net
.
spy
.
memcached
.
MemcachedClient
;
public

class

MemcachedJava

{

public

static

void

main
(
String
[
]

args
)

{

try
{

//
連接本地的 Memcached 服務(wù)


MemcachedClient

mcc
=
new

MemcachedClient
(
new

InetSocketAddress
(
"
127.0.0.1
"
,
11211
)
)
;
System
.
out
.
println
(
"
Connection to server successful.
"
)
;
//
添加數(shù)據(jù)


Future

fo
=
mcc
.
set
(
"
runoob
"
,
900
,
"
Free Education
"
)
;
//
輸出執(zhí)行 set 方法后的狀態(tài)


System
.
out
.
println
(
"
set status:
"
+
fo
.
get
(
)
)
;
//
使用 get 方法獲取數(shù)據(jù)


System
.
out
.
println
(
"
runoob value in cache -
"
+
mcc
.
get
(
"
runoob
"
)
)
;
//
關(guān)閉連接


mcc
.
shutdown
(
)
;
}
catch
(
Exception

ex
)

{

System
.
out
.
println
(
ex
.
getMessage
(
)
)
;
}

}

}

gets 操作實(shí)例、CAS

MemcachedJava.java 文件：

import

java
.
net
.
InetSocketAddress
;
import

java
.
util
.
concurrent
.
Future
;
import

net
.
spy
.
memcached
.
CASValue
;
import

net
.
spy
.
memcached
.
CASResponse
;
import

net
.
spy
.
memcached
.
MemcachedClient
;
public

class

MemcachedJava

{

public

static

void

main
(
String
[
]

args
)

{

try
{

//
連接本地的 Memcached 服務(wù)


MemcachedClient

mcc
=
new

MemcachedClient
(
new

InetSocketAddress
(
"
127.0.0.1
"
,
11211
)
)
;
System
.
out
.
println
(
"
Connection to server successful.
"
)
;
//
添加數(shù)據(jù)


Future

fo
=
mcc
.
set
(
"
runoob
"
,
900
,
"
Free Education
"
)
;
//
輸出執(zhí)行 set 方法后的狀態(tài)


System
.
out
.
println
(
"
set status:
"
+
fo
.
get
(
)
)
;
//
從緩存中獲取鍵為 runoob 的值


System
.
out
.
println
(
"
runoob value in cache -
"
+
mcc
.
get
(
"
runoob
"
)
)
;
//
通過(guò) gets 方法獲取 CAS token（令牌）


CASValue

casValue
=
mcc
.
gets
(
"
runoob
"
)
;
//
輸出 CAS token（令牌） 值


System
.
out
.
println
(
"
CAS value in cache -
"
+
casValue
)
;
//
關(guān)閉連接


mcc
.
shutdown
(
)
;
}
catch
(
Exception

ex
)

{

System
.
out
.
println
(
ex
.
getMessage
(
)
)
;
}

}

}

delete 操作實(shí)例

MemcachedJava.java 文件：

import

java
.
net
.
InetSocketAddress
;
import

java
.
util
.
concurrent
.
Future
;
import

net
.
spy
.
memcached
.
MemcachedClient
;
public

class

MemcachedJava

{

public

static

void

main
(
String
[
]

args
)

{

try
{

//
連接本地的 Memcached 服務(wù)


MemcachedClient

mcc
=
new

MemcachedClient
(
new

InetSocketAddress
(
"
127.0.0.1
"
,
11211
)
)
;
System
.
out
.
println
(
"
Connection to server successful.
"
)
;
//
添加數(shù)據(jù)


Future

fo
=
mcc
.
set
(
"
runoob
"
,
900
,
"
World's largest online tutorials library
"
)
;
//
輸出執(zhí)行 set 方法后的狀態(tài)


System
.
out
.
println
(
"
set status:
"
+
fo
.
get
(
)
)
;
//
獲取鍵對(duì)應(yīng)的值


System
.
out
.
println
(
"
runoob value in cache -
"
+
mcc
.
get
(
"
runoob
"
)
)
;
//
對(duì)存在的key進(jìn)行數(shù)據(jù)添加操作


fo
=
mcc
.
delete
(
"
runoob
"
)
;
//
輸出執(zhí)行 delete 方法后的狀態(tài)


System
.
out
.
println
(
"
delete status:
"
+
fo
.
get
(
)
)
;
//
獲取鍵對(duì)應(yīng)的值


System
.
out
.
println
(
"
runoob value in cache -
"
+
mcc
.
get
(
"
runoob
"
)
)
;
//
關(guān)閉連接


mcc
.
shutdown
(
)
;
}
catch
(
Exception

ex
)

{

System
.
out
.
println
(
ex
.
getMessage
(
)
)
;
}

}

}

Incr/Decr 操作實(shí)例

MemcachedJava.java 文件：

import

java
.
net
.
InetSocketAddress
;
import

java
.
util
.
concurrent
.
Future
;
import

net
.
spy
.
memcached
.
MemcachedClient
;
public

class

MemcachedJava

{

public

static

void

main
(
String
[
]

args
)

{

try
{

//
連接本地的 Memcached 服務(wù)


MemcachedClient

mcc
=
new

MemcachedClient
(
new

InetSocketAddress
(
"
127.0.0.1
"
,
11211
)
)
;
System
.
out
.
println
(
"
Connection to server successful.
"
)
;
//
添加數(shù)字值


Future

fo
=
mcc
.
set
(
"
number
"
,
900
,
"
1000
"
)
;
//
輸出執(zhí)行 set 方法后的狀態(tài)


System
.
out
.
println
(
"
set status:
"
+
fo
.
get
(
)
)
;
//
獲取鍵對(duì)應(yīng)的值


System
.
out
.
println
(
"
value in cache -
"
+
mcc
.
get
(
"
number
"
)
)
;
//
自增并輸出


System
.
out
.
println
(
"
value in cache after increment -
"
+
mcc
.
incr
(
"
number
"
,
111
)
)
;
//
自減并輸出


System
.
out
.
println
(
"
value in cache after decrement -
"
+
mcc
.
decr
(
"
number
"
,
112
)
)
;
//
關(guān)閉連接


mcc
.
shutdown
(
)
;
}
catch
(
Exception

ex
)

{

System
.
out
.
println
(
ex
.
getMessage
(
)
)
;
}

}

}


網(wǎng)站題目：創(chuàng)新互聯(lián)Memcached教程：Java連接Memcached服務(wù)
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