[TOC] 升级内容 | jar | 原版本 |新版本| | --- | --- |---| | springboot | 2.3.5.RELEASE |2.6.3| | springcloud | Hoxton.SR8|2021.0.0| | spring-cloud-alibaba.version| 2.2.3.RELEASE|2021.1| | knife4j| 2.0.9|3.0.3| | mybatis-plus.version| 3.4.3.1|3.5.1| | nacos-client| 1.3.2|2.0.3| ## 1.RedisUtil报错问题 ``` 报错代码：redisTemplate.delete(CollectionUtils.arrayToList(key)); 修正代码: redisTemplate.delete(Arrays.asList(key)); ``` ``` 报错代码：Cursor<byte[]> cursor = connection.scan(new ScanOptions.ScanOptionsBuilder().match(realKey).count(Integer.MAX_VALUE).build()); 修正代码: Cursor<byte[]> cursor = connection.scan(ScanOptions.scanOptions().match(realKey).count(Integer.MAX_VALUE).build()); ``` ## 2.JeecgRedisCacheWriter报错问题 升级后需要重新3个方法如下 ``` private final CacheStatisticsCollector statistics = CacheStatisticsCollector.create(); @Override public CacheStatistics getCacheStatistics(String cacheName) { return statistics.getCacheStatistics(cacheName); } @Override public void clearStatistics(String name) { } @Override public RedisCacheWriter withStatisticsCollector(CacheStatisticsCollector cacheStatisticsCollector) { return null; } ``` ## 3 Junit报错问题  在jeecg-boot-system-module模块的pom.xml文件中加入junit依赖 ``` <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <scope>test</scope> </dependency> ``` ## 4.定时器报错问题  spring-boot-starter-quartz 2.5.9 之前使用org.quartz.impl.jdbcjobstore.JobStoreTX定义quartz的默认数据源支持，即如下配置： ``` org.quartz.jobStore.class=org.quartz.impl.jdbcjobstore.JobStoreTX ``` jeecg-dev.yaml文件中修改为如下配置 ``` org.quartz.jobStore.class=org.springframework.scheduling.quartz.LocalDataSourceJobStore ```  注：微服务需要修改nacos中jeecg-dev.yaml文件 ## 5.循环依赖问题 在 Spring Boot 2.6 版本中，循环引用默认情况下已经被禁止了。如果你的项目存在循环引用问题，那你在启动项目的时候就会报错。  解决方案： application.yml中加入如下配置 ``` main: allow-circular-references: true ``` 或者启动入口类使用如下代码方式 ``` ConfigurableApplicationContext application=new SpringApplicationBuilder(JeecgSystemCloudApplication.class) // 允许循环引用 .allowCircularReferences(true) .run(args); ```  ## 6.Knife4j报错问题  出现这个问题的原因是：springboot2.6.x以及上版本默认使用的PATH\_PATTERN\_PARSER而knife4j的springfox使用的是ANT_PATH_MATCHER导致的，springboot的yml文件配置url匹配规则 解决方案： 1.application-dev.yml文件中加入如下配置 ~~~ mvc: pathmatch: matching-strategy: ant_path_matcher ~~~  **注：微服务中需要修改nacos中application-dev.yml文件** 2.Swagger2Config.java加入如下代码 ~~~ /** * 解决springboot2.6 和springfox不兼容问题 * @return */ @Bean public static BeanPostProcessor springfoxHandlerProviderBeanPostProcessor() { return new BeanPostProcessor() { @Override public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException { if (bean instanceof WebMvcRequestHandlerProvider || bean instanceof WebFluxRequestHandlerProvider) { customizeSpringfoxHandlerMappings(getHandlerMappings(bean)); } return bean; } private <T extends RequestMappingInfoHandlerMapping> void customizeSpringfoxHandlerMappings(List<T> mappings) { List<T> copy = mappings.stream() .filter(mapping -> mapping.getPatternParser() == null) .collect(Collectors.toList()); mappings.clear(); mappings.addAll(copy); } @SuppressWarnings("unchecked") private List<RequestMappingInfoHandlerMapping> getHandlerMappings(Object bean) { try { Field field = ReflectionUtils.findField(bean.getClass(), "handlerMappings"); field.setAccessible(true); return (List<RequestMappingInfoHandlerMapping>) field.get(bean); } catch (IllegalArgumentException | IllegalAccessException e) { throw new IllegalStateException(e); } } }; } ~~~ 3.@EnableSwagger2WebMvc改为@EnableSwagger2 完整代码如下 ``` package org.jeecg.config; import com.github.xiaoymin.knife4j.spring.annotations.EnableKnife4j; import io.swagger.annotations.ApiOperation; import lombok.extern.slf4j.Slf4j; import org.jeecg.common.constant.CommonConstant; import org.springframework.beans.BeansException; import org.springframework.beans.factory.config.BeanPostProcessor; import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.context.annotation.Import; import org.springframework.util.ReflectionUtils; import org.springframework.web.bind.annotation.RestController; import org.springframework.web.servlet.config.annotation.EnableWebMvc; import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry; import org.springframework.web.servlet.config.annotation.WebMvcConfigurer; import org.springframework.web.servlet.mvc.method.RequestMappingInfoHandlerMapping; import springfox.bean.validators.configuration.BeanValidatorPluginsConfiguration; import springfox.documentation.builders.ApiInfoBuilder; import springfox.documentation.builders.ParameterBuilder; import springfox.documentation.builders.PathSelectors; import springfox.documentation.builders.RequestHandlerSelectors; import springfox.documentation.schema.ModelRef; import springfox.documentation.service.*; import springfox.documentation.spi.DocumentationType; import springfox.documentation.spi.service.contexts.SecurityContext; import springfox.documentation.spring.web.plugins.Docket; import springfox.documentation.spring.web.plugins.WebFluxRequestHandlerProvider; import springfox.documentation.spring.web.plugins.WebMvcRequestHandlerProvider; import springfox.documentation.swagger2.annotations.EnableSwagger2; import springfox.documentation.swagger2.annotations.EnableSwagger2WebMvc; import java.lang.reflect.Field; import java.util.ArrayList; import java.util.Collections; import java.util.List; import java.util.stream.Collectors; /** * @Author scott */ @Configuration @EnableSwagger2 @EnableKnife4j @Import(BeanValidatorPluginsConfiguration.class) public class Swagger2Config implements WebMvcConfigurer { /** * * 显示swagger-ui.html文档展示页，还必须注入swagger资源： * * @param registry */ @Override public void addResourceHandlers(ResourceHandlerRegistry registry) { registry.addResourceHandler("swagger-ui.html").addResourceLocations("classpath:/META-INF/resources/"); registry.addResourceHandler("doc.html").addResourceLocations("classpath:/META-INF/resources/"); registry.addResourceHandler("/webjars/**").addResourceLocations("classpath:/META-INF/resources/webjars/"); } /** * swagger2的配置文件，这里可以配置swagger2的一些基本的内容，比如扫描的包等等 * * @return Docket */ @Bean(value = "defaultApi2") public Docket defaultApi2() { return new Docket(DocumentationType.SWAGGER_2) .useDefaultResponseMessages(false) .apiInfo(apiInfo()) .select() //此包路径下的类，才生成接口文档 .apis(RequestHandlerSelectors.basePackage("org.jeecg")) //加了ApiOperation注解的类，才生成接口文档 .apis(RequestHandlerSelectors.withClassAnnotation(RestController.class)) .apis(RequestHandlerSelectors.withMethodAnnotation(ApiOperation.class)) .paths(PathSelectors.any()) .build() .securitySchemes(Collections.singletonList(securityScheme())) .securityContexts(securityContexts()); //.globalOperationParameters(setHeaderToken()); } /*** * oauth2配置 * 需要增加swagger授权回调地址 * http://localhost:8888/webjars/springfox-swagger-ui/o2c.html * @return */ @Bean SecurityScheme securityScheme() { return new ApiKey(CommonConstant.X_ACCESS_TOKEN, CommonConstant.X_ACCESS_TOKEN, "header"); } /** * JWT token * @return */ private List<Parameter> setHeaderToken() { ParameterBuilder tokenPar = new ParameterBuilder(); List<Parameter> pars = new ArrayList<>(); tokenPar.name(CommonConstant.X_ACCESS_TOKEN).description("token").modelRef(new ModelRef("string")).parameterType("header").required(false).build(); pars.add(tokenPar.build()); return pars; } /** * api文档的详细信息函数,注意这里的注解引用的是哪个 * * @return */ private ApiInfo apiInfo() { return new ApiInfoBuilder() // //大标题 .title("Jeecg-Boot 后台服务API接口文档") // 版本号 .version("v3.0.0") // .termsOfServiceUrl("NO terms of service") // 描述 .description("后台API接口") // 作者 .contact(new Contact("北京敲敲云科技有限公司","www.jeccg.com","jeecgos@163.com")) // .contact("JEECG团队") .license("The Apache License, Version 2.0") .licenseUrl("http://www.apache.org/licenses/LICENSE-2.0.html") .build(); } /** * 新增 securityContexts 保持登录状态 */ private List<SecurityContext> securityContexts() { return new ArrayList( Collections.singleton(SecurityContext.builder() .securityReferences(defaultAuth()) .forPaths(PathSelectors.regex("^(?!auth).*$")) .build()) ); } private List<SecurityReference> defaultAuth() { AuthorizationScope authorizationScope = new AuthorizationScope("global", "accessEverything"); AuthorizationScope[] authorizationScopes = new AuthorizationScope[1]; authorizationScopes[0] = authorizationScope; return new ArrayList( Collections.singleton(new SecurityReference(CommonConstant.X_ACCESS_TOKEN, authorizationScopes))); } /** * 解决springboot2.6 和springfox不兼容问题 * @return */ @Bean public static BeanPostProcessor springfoxHandlerProviderBeanPostProcessor() { return new BeanPostProcessor() { @Override public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException { if (bean instanceof WebMvcRequestHandlerProvider || bean instanceof WebFluxRequestHandlerProvider) { customizeSpringfoxHandlerMappings(getHandlerMappings(bean)); } return bean; } private <T extends RequestMappingInfoHandlerMapping> void customizeSpringfoxHandlerMappings(List<T> mappings) { List<T> copy = mappings.stream() .filter(mapping -> mapping.getPatternParser() == null) .collect(Collectors.toList()); mappings.clear(); mappings.addAll(copy); } @SuppressWarnings("unchecked") private List<RequestMappingInfoHandlerMapping> getHandlerMappings(Object bean) { try { Field field = ReflectionUtils.findField(bean.getClass(), "handlerMappings"); field.setAccessible(true); return (List<RequestMappingInfoHandlerMapping>) field.get(bean); } catch (IllegalArgumentException | IllegalAccessException e) { throw new IllegalStateException(e); } } }; } } ``` ## 7 跨域问题 Springboot升级到2.4.0版本后，针对CorsConfiguration新增了效验  解决方案: 单体中： 将原来WebMvcConfiguration类中corsFilter方法设置跨域的addAllowedOrigin改为addAllowedOriginPattern 如下图  微服务： 需要修改jeecg-cloud-module/jeecg-cloud-gateway/src/main/resources/application.yml文件 如下图  ## 8 微服务启动时加载nacos文件失败导致@Value注解报错问题 jeecg-boot-starter/jeecg-boot-starter-cloud/pom.xml文件中添加依赖 ``` <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-bootstrap</artifactId> </dependency> ``` ## 9 微服务启动时No Feign Client for loadBalancing defined. Did you forget to include spring-cloud-starter-loadbalancer? jeecg-boot-starter/jeecg-boot-starter-cloud/pom.xml文件中添加依赖 ``` <!-- SpringCloud 负载均衡 --> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-loadbalancer</artifactId> </dependency> ``` ## 10 使用Jreble启动时报错问题 JRebel: ERROR Class 'org.springframework.boot.env.PropertiesPropertySourceLoader' could not be processed by org.zeroturnaround.javarebel.integration 解决方案：升级Jreble插件到最新版即可(2022.1.1) ## 11 sentinel控制台无法登录问题 jeecg-cloud-module/jeecg-cloud-sentinel/src/main/resources/application.properties 文件中添加如下配置 ``` spring.mvc.pathmatch.matching-strategy=ant-path-matcher ``` ## 12 解决metrics端点不显示jvm信息的问题 问题原因:spring boot中MeterRegistry初始化过早 解决方案： 在WebMvcConfiguration.java添加如下配置 ~~~ @Bean InitializingBean forcePrometheusPostProcessor(BeanPostProcessor meterRegistryPostProcessor, PrometheusMeterRegistry registry) { return () -> meterRegistryPostProcessor.postProcessAfterInitialization(registry, ""); } ~~~ 添加依赖(放jeecg-boot-base/jeecg-boot-base-core/pom.xml即可) ~~~ <!--解决metrics端点不显示jvm信息的问题--> <dependency> <groupId>io.micrometer</groupId> <artifactId>micrometer-registry-prometheus</artifactId> </dependency> ~~~