就像一个从来没有杀过猪的人在教别人杀猪

2024-05-17 23:24:52 浏览数 (1)

就像一个从来没有杀过猪的人在教别人杀猪

一、介绍

在上一篇文章里，在公共模块中引入了redis依赖，从而造成没有配置redis信息的模块，在启动时，会默认去连接localhost:6379。

这是我们不希望看到的，所以便有了上一篇文章

当SpringBoot引用Redis依赖但没有配置Redis信息时 | 半月无霜 (banmoon.top)

好巧不巧，目前又出现了一个情况。

就是reactive和selevt两种不同的web去引用了这个模块。

selevt是好了，但我的gateway出现了问题，它连不上redis了，连对应的bean都没有创建出来。

所以没办法，我只能再继续改造这个RedisConfig.java

二、代码

1）配置类

原本的RedisConfig.java，用来给selevt使用

代码语言：javascript复制
package com.banmoon.business.config;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication;
import org.springframework.boot.autoconfigure.data.redis.RedisAutoConfiguration;
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.RedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;

/**
 * @author banmoon
 * @date 2024/03/07 12:08:25
 */
@SuppressWarnings("all")
@Configuration
@ConditionalOnWebApplication(type = ConditionalOnWebApplication.Type.SERVLET)
@EnableAutoConfiguration(exclude = {RedisAutoConfiguration.class})
public class RedisConfig {

    @Bean
    @ConditionalOnBean(RedisConnectionFactory.class)
    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory) {
        RedisTemplate<String, Object> template = new RedisTemplate<String, Object>();
        template.setConnectionFactory(factory);
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
        ObjectMapper om = new ObjectMapper();
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(om);
        StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();
        // key采用String的序列化方式
        template.setKeySerializer(stringRedisSerializer);
        // hash的key也采用String的序列化方式
        template.setHashKeySerializer(stringRedisSerializer);
        // value序列化方式采用jackson
        template.setValueSerializer(jackson2JsonRedisSerializer);
        // hash的value序列化方式采用jackson
        template.setHashValueSerializer(jackson2JsonRedisSerializer);
        template.afterPropertiesSet();
        return template;
    }

}

新开一个ReactiveRedisConfig.java，给reactive使用

代码语言：javascript复制
package com.banmoon.business.config;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.boot.autoconfigure.AutoConfigureBefore;
import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication;
import org.springframework.boot.autoconfigure.data.redis.RedisAutoConfiguration;
import org.springframework.boot.autoconfigure.data.redis.RedisReactiveAutoConfiguration;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.ReactiveRedisConnectionFactory;
import org.springframework.data.redis.core.ReactiveRedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializationContext;
import org.springframework.data.redis.serializer.StringRedisSerializer;

/**
 * @author banmoon
 * @date 2024/03/07 12:08:25
 */
@SuppressWarnings("all")
@Configuration(proxyBeanMethods = false)
@AutoConfigureBefore({RedisAutoConfiguration.class, RedisReactiveAutoConfiguration.class})
@ConditionalOnWebApplication(type = ConditionalOnWebApplication.Type.REACTIVE)
public class ReactiveRedisConfig {

    @Bean
    @ConditionalOnBean(ReactiveRedisConnectionFactory.class)
    public ReactiveRedisTemplate<String, Object> reactiveRedisTemplate(ReactiveRedisConnectionFactory factory) {
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
        ObjectMapper om = new ObjectMapper();
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(om);
        StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();
        RedisSerializationContext<String, Object> serializationContext = RedisSerializationContext
                .<String, Object>newSerializationContext(stringRedisSerializer)
                .value(jackson2JsonRedisSerializer)
                .hashKey(stringRedisSerializer)
                .hashValue(jackson2JsonRedisSerializer)
                .build();
        ReactiveRedisTemplate<String, Object> template = new ReactiveRedisTemplate<>(factory, serializationContext);
        return template;
    }

}

注意此处，需要指定在其之前加载，那样才能保证使用的是我们自己的reactiveRedisTemplate

@AutoConfigureBefore({RedisAutoConfiguration.class, RedisReactiveAutoConfiguration.class})

2）测试

写一个controller进行测试

代码语言：javascript复制
package com.banmoon.controller;

import com.banmoon.business.obj.dto.ResultData;
import com.banmoon.obj.request.RedisSetValueRequest;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.data.redis.core.ReactiveRedisTemplate;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;
import reactor.core.publisher.Mono;

import javax.annotation.Resource;
import javax.validation.Valid;

@Slf4j
@Api(tags = "redis测试模块")
@Validated
@RestController
@RequestMapping("/redis/test")
public class RedisTestController {

    @Resource
    private ReactiveRedisTemplate<String, Object> reactiveRedisTemplate;

    @ApiOperation("获取redis缓存")
    @GetMapping("/get")
    public Mono<ResultData<String>> get(String key) {
        return reactiveRedisTemplate.opsForValue()
                .get(key)
                .map(value -> ResultData.success(value.toString()));
    }

    @ApiOperation("设置redis缓存")
    @PostMapping("/set")
    public Mono<ResultData<?>> set(@RequestBody @Valid RedisSetValueRequest request) {
        return reactiveRedisTemplate.opsForValue()
                .set(request.getKey(), request.getValue())
                .map(result -> result ? ResultData.success() : ResultData.fail());
    }

}

执行测试

image-20240517230158000image-20240517230158000
image-20240517230227446image-20240517230227446

三、最后

那些我记录的技能点，就算是哪天我在某处看到的一篇文章，它就像一个引子，我想把它分享出去，这个问题可以试试用这个去解决。

就当我满心欢喜的分享我所知道的技术的时候，冷不防的一句话将我真是让我哑口无言

就像一个从来没有杀过猪的人在教别人杀猪！

行吧，半响之后，我从牙缝里面挤出这个词。

以后，再无共勉，工作上的事情，还是不要报太大的兴趣吧。

springboot redis

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