创建springboot项目
在nosql中选择redis
项目目录
pom.xml中还需要加入下面的jar包
org.springframework.boot spring-boot-starter-json
在application.properties文件中添加redis服务器信息
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spring.redis.host= 192.168 . 5.132 spring.redis.port= 6379 |
剩下4个test类,我直接以源码的方式粘出来,里面有些代码是非必须的,我保留了测试的验证过程,所以里面会有冗余代码。(这些代码在我github上的练习项目中也有)
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package com.myspringboot.redis; import org.springframework.boot.springapplication; import org.springframework.boot.autoconfigure.springbootapplication; import org.springframework.context.configurableapplicationcontext; @springbootapplication public class demoapplication { public static void main(string[] args) { configurableapplicationcontext configurableapplicationcontext = springapplication.run(demoapplication. class , args); redistest redistest = configurableapplicationcontext.getbean(redistest. class ); redistest.testredis(); } } |
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package com.myspringboot.redis; import org.springframework.context.annotation.bean; import org.springframework.context.annotation.configuration; import org.springframework.data.redis.connection.redisconnectionfactory; import org.springframework.data.redis.core.stringredistemplate; import org.springframework.data.redis.serializer.jackson2jsonredisserializer; @configuration public class mytemplate { @bean public stringredistemplate getmytemplate(redisconnectionfactory redisconnectionfactory){ stringredistemplate stringredistemplate = new stringredistemplate(redisconnectionfactory); stringredistemplate.sethashvalueserializer( new jackson2jsonredisserializer<object>(object. class )); return stringredistemplate; } } |
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package com.myspringboot.redis; import com.fasterxml.jackson.databind.objectmapper; import org.springframework.beans.factory.annotation.autowired; import org.springframework.beans.factory.annotation.qualifier; import org.springframework.data.redis.connection.message; import org.springframework.data.redis.connection.messagelistener; import org.springframework.data.redis.connection.redisconnection; import org.springframework.data.redis.core.hashoperations; import org.springframework.data.redis.core.redistemplate; import org.springframework.data.redis.core.stringredistemplate; import org.springframework.data.redis.hash.jackson2hashmapper; import org.springframework.data.redis.serializer.jackson2jsonredisserializer; import org.springframework.stereotype.component; import java.util.map; @component public class redistest { @autowired redistemplate redistemplate; @autowired stringredistemplate stringredistemplate; @autowired objectmapper objectmapper; // 自定义模板 @autowired @qualifier ( "getmytemplate" ) stringredistemplate mystringredistemplate; public void testredis() { //redis中直接查看时,乱码 redistemplate.opsforvalue().set( "key1" , "hello1" ); system.out.println(redistemplate.opsforvalue().get( "key1" )); //redis中直接查看时,正常 stringredistemplate.opsforvalue().set( "key2" , "hello2" ); system.out.println(stringredistemplate.opsforvalue().get( "key2" )); redisconnection connection = redistemplate.getconnectionfactory().getconnection(); connection.set( "key3" .getbytes(), "hello3" .getbytes()); system.out.println( new string(connection.get( "key3" .getbytes()))); hashoperations<string, object, object> hash = stringredistemplate.opsforhash(); hash.put( "key4" , "name" , "张三" ); hash.put( "key4" , "age" , "18" ); system.out.println(hash.get( "key4" , "name" )); system.out.println(hash.entries( "key4" )); stringredistemplate.sethashvalueserializer( new jackson2jsonredisserializer<object>(object. class )); jackson2hashmapper jackson2hashmapper = new jackson2hashmapper(objectmapper, false ); // true 扁平化(将对象中的参数展开) user user = new user(); user.setid( 123 ); user.setname( "zhangsan" ); stringredistemplate.opsforhash().putall( "key5" , jackson2hashmapper.tohash(user)); map map = stringredistemplate.opsforhash().entries( "key5" ); user user1 = objectmapper.convertvalue(map, user. class ); system.out.println(user1.getid()); system.out.println(user1.getname()); mystringredistemplate.opsforhash().putall( "key6" , jackson2hashmapper.tohash(user)); map map1 = mystringredistemplate.opsforhash().entries( "key6" ); user user2 = objectmapper.convertvalue(map, user. class ); system.out.println(user2.getid()); system.out.println(user2.getname()); //发布订阅 mystringredistemplate.convertandsend( "qunliao" , "hello" ); redisconnection connection1 = mystringredistemplate.getconnectionfactory().getconnection(); connection1.subscribe( new messagelistener() { @override public void onmessage(message message, byte [] bytes) { byte [] body = message.getbody(); system.out.println( new string(body)); } }, "qunliao" .getbytes()); while ( true ){ mystringredistemplate.convertandsend( "qunliao" , "hello" ); try { thread.sleep( 3000 ); } catch (interruptedexception e) { e.printstacktrace(); } } } } |
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package com.myspringboot.redis; public class user { private int id; private string name; public int getid() { return id; } public void setid( int id) { this .id = id; } public string getname() { return name; } public void setname(string name) { this .name = name; } } |
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原文链接:https://blog.csdn.net/jt781861965/article/details/114199289