踩点记录-_-!!!

心已赠人 2024-04-01 12:09 102阅读 0赞

### JDK17踩坑 ###

为什么要用jdk17？因为生产用了zgc，想要本地测试zgc参数，而mac/AArch64想要使用zgc，只能17版本，详情可以查看官网：[https://wiki.openjdk.org/display/zgc/Main][https_wiki.openjdk.org_display_zgc_Main]

#### 各种unnamed module的报错 ####

Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make protected final java.lang.Class java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain) throws java.lang.ClassFormatError accessible: module java.base does not "opens java.lang" to unnamed module @7791a895
    	at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:354)
    	at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297)
    	at java.base/java.lang.reflect.Method.checkCanSetAccessible(Method.java:199)
    	at java.base/java.lang.reflect.Method.setAccessible(Method.java:193)
    	at com.google.inject.internal.cglib.core.$ReflectUtils$1.run(ReflectUtils.java:52)
    	at java.base/java.security.AccessController.doPrivileged(AccessController.java:318)
    	at com.google.inject.internal.cglib.core.$ReflectUtils.<clinit>(ReflectUtils.java:42)
    	... 75 more

#### 解决：增加如下vm参数 ####

> –add-opens java.base/java.lang=ALL-UNNAMED  
> –add-opens java.base/sun.net.util=ALL-UNNAMED  
> –add-opens java.base/java.util=ALL-UNNAMED  
> –add-opens java.base/java.lang.reflect=ALL-UNNAMED  
> –add-opens java.base/java.text=ALL-UNNAMED  
> –add-opens java.desktop/java.awt.font=ALL-UNNAMED  
> –add-opens java.desktop/sun.swing=ALL-UNNAMED

#### maven打包报错 ####

报错如下

> class lombok.javac.apt.LombokProcessor (in unnamed module @0x3ed27f49) cannot access class com.sun.tools.javac.processing.JavacProcessingEnvironment (in module jdk.compiler) because module jdk.compiler does not export com.sun.tools.javac.processing to unnamed module @0x3ed27f49

原因：lombok版本过低

#### 解决：引入更高版本 ####

<dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <version>1.18.24</version>
                <scope>compile</scope>
            </dependency>

### Cacheable注解踩坑 ###

#### 语法错误 ####

报错如下

org.springframework.expression.spel.SpelEvaluationException: EL1008E: Property or field 'notification' cannot be found on object of type 'org.springframework.cache.interceptor.CacheExpressionRootObject' - maybe not public or not valid?
    
    	at org.springframework.expression.spel.ast.PropertyOrFieldReference.readProperty(PropertyOrFieldReference.java:217)
    	at org.springframework.expression.spel.ast.PropertyOrFieldReference.getValueInternal(PropertyOrFieldReference.java:104)
    	at org.springframework.expression.spel.ast.PropertyOrFieldReference.getValueInternal(PropertyOrFieldReference.java:91)
    	at org.springframework.expression.spel.ast.OpMinus.getValueInternal(OpMinus.java:98)
    	at org.springframework.expression.spel.ast.OpMinus.getValueInternal(OpMinus.java:98)

配置如下

@Cacheable(key = "notification-all-category", cacheNames = "userSwitch")

原因：如果缓存的key是常量，需要使用单引号将常量包起来  
解决方法：修改配置如下

@Cacheable(key = "'notification-all-category'", cacheNames = "userSwitch")

#### 类型转换错误 ####

报错如下

java.lang.ClassCastException: class java.lang.Boolean cannot be cast to class java.util.List (java.lang.Boolean and java.util.List are in module java.base of loader 'bootstrap')
    	at ....notification.service.template.TemplateService$$EnhancerBySpringCGLIB$$67b21dc9.selectAllValidShownCategoryCodes(<generated>)
    	at ....notification.controller.UserSwitchSettingController.queryUserSwitch(UserSwitchSettingController.java:123)

报错代码

@Cacheable(key = "'notification-all-category'", cacheNames = "userSwitch")
    public List<TemplateCategoryEntity> selectAllValidShownCategoryCodes() {
        
    	return templateCategoryMapper.selectAllValidShownCategoryCodes();
    }

检查Mapper响应类型没问题，那么就是缓存问题，查看userSwitch缓存配置为Boolean类型-.-!!!  
新增缓存并配置匹配的序列化类型

private RedisCacheConfiguration getAllCategoryCacheConfiguration() {
        
        return RedisCacheConfiguration
                .defaultCacheConfig()
                .serializeValuesWith(new RedisSerializationContext.SerializationPair<List<TemplateCategoryEntity>>() {
        
                    @Override
                    public RedisElementReader<List<TemplateCategoryEntity>> getReader() {
        
                        return byteBuffer -> JacksonUtil.fromList(new String(byteBuffer.array(), StandardCharsets.UTF_8 ),
                                TemplateCategoryEntity.class);
                    }
    
                    @Override
                    public RedisElementWriter<List<TemplateCategoryEntity>> getWriter() {
        
                        return o -> ByteBuffer.wrap(JacksonUtil.toJsonStr(o).getBytes(StandardCharsets.UTF_8));
                    }
                })
                .entryTtl(Duration.ofDays(30))
                .prefixKeysWith("notification_category_");
    }

[https_wiki.openjdk.org_display_zgc_Main]: https://wiki.openjdk.org/display/zgc/Main