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Spring4框架必备:Jackson核心库jackson-core-2.5.0.jar解析

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Jackson是一个广泛使用的Java库,用于处理JSON数据格式。它主要用于序列化和反序列化Java对象到JSON表示以及反过来。Jackson库的2.5.0版本是该库发展过程中的一个重要版本,它被集成到许多Java框架中,特别是Spring框架。 ### Jackson核心包的介绍 在了解jackson-core-2.5.0.jar之前,我们首先需要了解Jackson项目中的三个主要组件: - **jackson-core**: 这是Jackson库的核心,提供了JSON数据处理的基础功能,包括读写JSON数据、树模型构建等。它不依赖于任何其他组件,因此可以独立使用。 - **jackson-annotations**: 这个包提供了处理注解的组件,允许开发者使用注解来控制数据的序列化和反序列化过程。 - **jackson-databind**: 这个包是基于前两个组件构建的,它将核心库和注解处理库结合起来,提供了最常使用的数据绑定功能,使得序列化和反序列化过程可以通过简单的方法调用轻松完成。 ### Spring框架与Jackson的集成 Spring框架是一个全面的编程和配置模型,用于Java平台上的企业级应用程序开发。Spring4框架中,对于处理RESTful Web服务的JSON数据格式,Jackson是首选的序列化工具之一。 当开发Spring应用时,若需要处理JSON数据,可以通过Maven或Gradle等构建工具将jackson-core-2.5.0.jar以及其他相关的包(如jackson-databind)加入到项目的依赖中。这样,在项目中就可以使用Jackson提供的功能,通过简单的注解,如@JsonIgnore、@JsonProperty等来控制数据的序列化行为。 ### Jackson核心包的应用场景 在实际开发中,jackson-core-2.5.0.jar常用于以下场景: 1. **Web服务开发**: 当开发RESTful服务时,客户端和服务器端经常需要交换JSON格式的数据。Jackson能够将Java对象自动转换成JSON格式,并且可以将JSON数据反序列化为Java对象。 2. **数据存储**: 在数据库存储中,某些场景下会选择存储JSON格式的数据。此时,可以使用Jackson将Java对象序列化为JSON字符串,存储在数据库中,需要时再反序列化回来。 3. **缓存**: 缓存系统中存储数据的序列化形式时,使用Jackson可以有效地处理Java对象和JSON字符串之间的转换。 ### 详细知识点 #### jackson-core-2.5.0.jar包中的关键类和接口 - **JsonParser**: 提供了从JSON格式的输入流中解析数据的API,可以解析JSON文本并构建JsonNode对象。 - **JsonGenerator**: 提供了将数据写入JSON格式的输出流的API,用于将Java对象或数据结构转换成JSON数据。 - **JsonNode**: 是一个通用的树状结构,可以表示任何JSON数据结构。它提供了丰富的API来查询、修改或遍历JSON数据。 - **JsonFactory**: 用于创建JsonParser和JsonGenerator实例的工厂类,控制着JSON的解析和生成过程。 #### 在Spring框架中的使用方法 在Spring框架中,一般不需要直接与jackson-core-2.5.0.jar包中的类打交道,而是通过Spring提供的集成点来使用Jackson。例如,可以通过在Controller层使用@RestController注解,来自动配置和使用Jackson进行数据的序列化和反序列化。对于复杂的序列化需求,可以通过配置ObjectMapper的实例来自定义序列化行为。 #### 版本更新内容 版本2.5.0对之前的版本进行了一些改进和新功能的添加。例如,增加了对Java 8日期时间API的支持(JSR-310),以及对模块化和性能上的优化。此外,该版本修复了一些已知的bug,并对API进行了一些改进。 #### 与Spring版本兼容性 在使用jackson-core-2.5.0.jar时,需要注意它与Spring框架版本的兼容性。虽然Spring框架广泛支持Jackson,但某些特定版本可能需要特定版本的Jackson依赖。开发者在升级或更换Jackson版本时,要仔细查阅Spring版本的兼容性列表,以确保两者能良好配合工作。 ### 结语 通过了解jackson-core-2.5.0.jar包,我们可以认识到Jackson作为序列化工具的强大之处,及其在Spring框架中的重要性。无论是数据交换、存储还是其他需要序列化的场景,Jackson都能够提供灵活、高效且易于使用的解决方案。在掌握Jackson核心包的基础上,开发者可以更有效地构建Java应用程序,特别是在使用Spring框架时。

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com.example.datavue.DataVueApplication . ____ _ __ _ _ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \ ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/ ___)| |_)| | | | | || (_| | ) ) ) ) ' |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v3.5.0) 2025-07-22T20:03:46.454+08:00 INFO 6692 --- [dataVue] [ main] com.example.datavue.DataVueApplication : Starting DataVueApplication using Java 18.0.2 with PID 6692 (D:\javacode\dataVue\target\classes started by admin in D:\javacode\dataVue) 2025-07-22T20:03:46.458+08:00 INFO 6692 --- [dataVue] [ main] com.example.datavue.DataVueApplication : No active profile set, falling back to 1 default profile: "default" 2025-07-22T20:03:48.652+08:00 INFO 6692 --- [dataVue] [ main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode. 2025-07-22T20:03:48.754+08:00 INFO 6692 --- [dataVue] [ main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 80 ms. Found 1 JPA repository interface. 2025-07-22T20:03:49.649+08:00 INFO 6692 --- [dataVue] [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port 8080 (http) 2025-07-22T20:03:49.677+08:00 INFO 6692 --- [dataVue] [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat] 2025-07-22T20:03:49.678+08:00 INFO 6692 --- [dataVue] [ main] o.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/10.1.41] 2025-07-22T20:03:49.802+08:00 INFO 6692 --- [dataVue] [ main] o.a.c.c.C.[.[localhost].[/dataVue] : Initializing Spring embedded WebApplicationContext 2025-07-22T20:03:49.803+08:00 INFO 6692 --- [dataVue] [ main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 3158 ms 2025-07-22T20:03:50.378+08:00 INFO 6692 --- [dataVue] [ main] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [name: default] 2025-07-22T20:03:50.511+08:00 INFO 6692 --- [dataVue] [ main] org.hibernate.Version : HHH000412: Hibernate ORM core version 6.6.15.Final 2025-07-22T20:03:50.584+08:00 INFO 6692 --- [dataVue] [ main] o.h.c.internal.RegionFactoryInitiator : HHH000026: Second-level cache disabled 2025-07-22T20:03:51.275+08:00 INFO 6692 --- [dataVue] [ main] o.s.o.j.p.SpringPersistenceUnitInfo : No LoadTimeWeaver setup: ignoring JPA class transformer 2025-07-22T20:03:51.338+08:00 INFO 6692 --- [dataVue] [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Starting... 2025-07-22T20:03:51.998+08:00 INFO 6692 --- [dataVue] [ main] com.zaxxer.hikari.pool.HikariPool : HikariPool-1 - Added connection com.mysql.cj.jdbc.ConnectionImpl@28bc9749 2025-07-22T20:03:52.001+08:00 INFO 6692 --- [dataVue] [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Start completed. 2025-07-22T20:03:52.093+08:00 WARN 6692 --- [dataVue] [ main] org.hibernate.orm.deprecation : HHH90000025: MySQLDialect does not need to be specified explicitly using 'hibernate.dialect' (remove the property setting and it will be selected by default) 2025-07-22T20:03:52.136+08:00 INFO 6692 --- [dataVue] [ main] org.hibernate.orm.connections.pooling : HHH10001005: Database info: Database JDBC URL [Connecting through datasource 'HikariDataSource (HikariPool-1)'] Database driver: undefined/unknown Database version: 8.0.42 Autocommit mode: undefined/unknown Isolation level: undefined/unknown Minimum pool size: undefined/unknown Maximum pool size: undefined/unknown 2025-07-22T20:03:53.690+08:00 INFO 6692 --- [dataVue] [ main] o.h.e.t.j.p.i.JtaPlatformInitiator : HHH000489: No JTA platform available (set 'hibernate.transaction.jta.platform' to enable JTA platform integration) 2025-07-22T20:03:53.779+08:00 INFO 6692 --- [dataVue] [ main] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default' 2025-07-22T20:03:54.251+08:00 WARN 6692 --- [dataVue] [ main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'dataController' defined in file [D:\javacode\dataVue\target\classes\com\example\datavue\controller\DataController.class]: Unsatisfied dependency expressed through constructor parameter 0: Error creating bean with name 'dataServiceImpl' defined in file [D:\javacode\dataVue\target\classes\com\example\datavue\service\impl\DataServiceImpl.class]: Unsatisfied dependency expressed through constructor parameter 0: Error creating bean with name 'dataRepository' defined in com.example.datavue.repository.DataRepository defined in @EnableJpaRepositories declared on JpaRepositoriesRegistrar.EnableJpaRepositoriesConfiguration: Could not create query for public abstract com.example.datavue.entity.Data com.example.datavue.repository.DataRepository.findAll(java.lang.Long); Reason: Failed to create query for method public abstract com.example.datavue.entity.Data com.example.datavue.repository.DataRepository.findAll(java.lang.Long); No property 'findAll' found for type 'Data' 2025-07-22T20:03:54.251+08:00 INFO 6692 --- [dataVue] [ main] j.LocalContainerEntityManagerFactoryBean : Closing JPA EntityManagerFactory for persistence unit 'default' 2025-07-22T20:03:54.256+08:00 INFO 6692 --- [dataVue] [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown initiated... 2025-07-22T20:03:54.273+08:00 INFO 6692 --- [dataVue] [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown completed. 2025-07-22T20:03:54.276+08:00 INFO 6692 --- [dataVue] [ main] o.apache.catalina.core.StandardService : Stopping service [Tomcat] 2025-07-22T20:03:54.308+08:00 INFO 6692 --- [dataVue] [ main] .s.b.a.l.ConditionEvaluationReportLogger : Error starting ApplicationContext. To display the condition evaluation report re-run your application with 'debug' enabled. 2025-07-22T20:03:54.340+08:00 ERROR 6692 --- [dataVue] [ main] o.s.boot.SpringApplication : Application run failed org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'dataController' defined in file [D:\javacode\dataVue\target\classes\com\example\datavue\controller\DataController.class]: Unsatisfied dependency expressed through constructor parameter 0: Error creating bean with name 'dataServiceImpl' defined in file [D:\javacode\dataVue\target\classes\com\example\datavue\service\impl\DataServiceImpl.class]: Unsatisfied dependency expressed through constructor parameter 0: Error creating bean with name 'dataRepository' defined in com.example.datavue.repository.DataRepository defined in @EnableJpaRepositories declared on JpaRepositoriesRegistrar.EnableJpaRepositoriesConfiguration: Could not create query for public abstract com.example.datavue.entity.Data com.example.datavue.repository.DataRepository.findAll(java.lang.Long); Reason: Failed to create query for method public abstract com.example.datavue.entity.Data com.example.datavue.repository.DataRepository.findAll(java.lang.Long); No property 'findAll' found for type 'Data' at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:804) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:240) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1395) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1232) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:569) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:529) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:339) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:373) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:337) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.beans.factory.support.DefaultListableBeanFactory.instantiateSingleton(DefaultListableBeanFactory.java:1222) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingleton(DefaultListableBeanFactory.java:1188) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:1123) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:987) ~[spring-context-6.2.7.jar:6.2.7] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:627) ~[spring-context-6.2.7.jar:6.2.7] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:146) ~[spring-boot-3.5.0.jar:3.5.0] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:753) ~[spring-boot-3.5.0.jar:3.5.0] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:439) ~[spring-boot-3.5.0.jar:3.5.0] at org.springframework.boot.SpringApplication.run(SpringApplication.java:318) ~[spring-boot-3.5.0.jar:3.5.0] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1362) ~[spring-boot-3.5.0.jar:3.5.0] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1351) ~[spring-boot-3.5.0.jar:3.5.0] at com.example.datavue.DataVueApplication.main(DataVueApplication.java:11) ~[classes/:na] Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'dataServiceImpl' defined in file [D:\javacode\dataVue\target\classes\com\example\datavue\service\impl\DataServiceImpl.class]: Unsatisfied dependency expressed through constructor parameter 0: Error creating bean with name 'dataRepository' defined in com.example.datavue.repository.DataRepository defined in @EnableJpaRepositories declared on JpaRepositoriesRegistrar.EnableJpaRepositoriesConfiguration: Could not create query for public abstract com.example.datavue.entity.Data com.example.datavue.repository.DataRepository.findAll(java.lang.Long); Reason: Failed to create query for method public abstract com.example.datavue.entity.Data com.example.datavue.repository.DataRepository.findAll(java.lang.Long); No property 'findAll' found for type 'Data' at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:804) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:240) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1395) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1232) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:569) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:529) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:339) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:373) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:337) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:254) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1740) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1628) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:913) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:791) ~[spring-beans-6.2.7.jar:6.2.7] ... 21 common frames omitted Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataRepository' defined in com.example.datavue.repository.DataRepository defined in @EnableJpaRepositories declared on JpaRepositoriesRegistrar.EnableJpaRepositoriesConfiguration: Could not create query for public abstract com.example.datavue.entity.Data com.example.datavue.repository.DataRepository.findAll(java.lang.Long); Reason: Failed to create query for method public abstract com.example.datavue.entity.Data com.example.datavue.repository.DataRepository.findAll(java.lang.Long); No property 'findAll' found for type 'Data' at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1826) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:607) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:529) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:339) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:373) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:337) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1682) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1628) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:913) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:791) ~[spring-beans-6.2.7.jar:6.2.7] ... 35 common frames omitted Caused by: org.springframework.data.repository.query.QueryCreationException: Could not create query for public abstract com.example.datavue.entity.Data com.example.datavue.repository.DataRepository.findAll(java.lang.Long); Reason: Failed to create query for method public abstract com.example.datavue.entity.Data com.example.datavue.repository.DataRepository.findAll(java.lang.Long); No property 'findAll' found for type 'Data' at org.springframework.data.repository.query.QueryCreationException.create(QueryCreationException.java:101) ~[spring-data-commons-3.5.0.jar:3.5.0] at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.lookupQuery(QueryExecutorMethodInterceptor.java:120) ~[spring-data-commons-3.5.0.jar:3.5.0] at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.mapMethodsToQuery(QueryExecutorMethodInterceptor.java:104) ~[spring-data-commons-3.5.0.jar:3.5.0] at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.lambda$new$0(QueryExecutorMethodInterceptor.java:92) ~[spring-data-commons-3.5.0.jar:3.5.0] at java.base/java.util.Optional.map(Optional.java:260) ~[na:na] at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.<init>(QueryExecutorMethodInterceptor.java:92) ~[spring-data-commons-3.5.0.jar:3.5.0] at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:434) ~[spring-data-commons-3.5.0.jar:3.5.0] at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.lambda$afterPropertiesSet$4(RepositoryFactoryBeanSupport.java:350) ~[spring-data-commons-3.5.0.jar:3.5.0] at org.springframework.data.util.Lazy.getNullable(Lazy.java:135) ~[spring-data-commons-3.5.0.jar:3.5.0] at org.springframework.data.util.Lazy.get(Lazy.java:113) ~[spring-data-commons-3.5.0.jar:3.5.0] at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.afterPropertiesSet(RepositoryFactoryBeanSupport.java:356) ~[spring-data-commons-3.5.0.jar:3.5.0] at org.springframework.data.jpa.repository.support.JpaRepositoryFactoryBean.afterPropertiesSet(JpaRepositoryFactoryBean.java:132) ~[spring-data-jpa-3.5.0.jar:3.5.0] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1873) ~[spring-beans-6.2.7.jar:6.2.7] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1822) ~[spring-beans-6.2.7.jar:6.2.7] ... 45 common frames omitted Caused by: java.lang.IllegalArgumentException: Failed to create query for method public abstract com.example.datavue.entity.Data com.example.datavue.repository.DataRepository.findAll(java.lang.Long); No property 'findAll' found for type 'Data' at org.springframework.data.jpa.repository.query.PartTreeJpaQuery.<init>(PartTreeJpaQuery.java:107) ~[spring-data-jpa-3.5.0.jar:3.5.0] at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$CreateQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:128) ~[spring-data-jpa-3.5.0.jar:3.5.0] at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$CreateIfNotFoundQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:260) ~[spring-data-jpa-3.5.0.jar:3.5.0] at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$AbstractQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:99) ~[spring-data-jpa-3.5.0.jar:3.5.0] at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.lookupQuery(QueryExecutorMethodInterceptor.java:116) ~[spring-data-commons-3.5.0.jar:3.5.0] ... 57 common frames omitted Caused by: org.springframework.data.mapping.PropertyReferenceException: No property 'findAll' found for type 'Data' at org.springframework.data.mapping.PropertyPath.<init>(PropertyPath.java:94) ~[spring-data-commons-3.5.0.jar:3.5.0] at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:455) ~[spring-data-commons-3.5.0.jar:3.5.0] at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:431) ~[spring-data-commons-3.5.0.jar:3.5.0] at org.springframework.data.mapping.PropertyPath.lambda$from$0(PropertyPath.java:384) ~[spring-data-commons-3.5.0.jar:3.5.0] at java.base/java.util.concurrent.ConcurrentMap.computeIfAbsent(ConcurrentMap.java:330) ~[na:na] at org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:366) ~[spring-data-commons-3.5.0.jar:3.5.0] at org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:344) ~[spring-data-commons-3.5.0.jar:3.5.0] at org.springframework.data.repository.query.parser.Part.<init>(Part.java:81) ~[spring-data-commons-3.5.0.jar:3.5.0] at org.springframework.data.repository.query.parser.PartTree$OrPart.lambda$new$0(PartTree.java:259) ~[spring-data-commons-3.5.0.jar:3.5.0] at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197) ~[na:na] at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) ~[na:na] at java.base/java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:992) ~[na:na] at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) ~[na:na] at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) ~[na:na] at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:921) ~[na:na] at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[na:na] at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:682) ~[na:na] at org.springframework.data.repository.query.parser.PartTree$OrPart.<init>(PartTree.java:260) ~[spring-data-commons-3.5.0.jar:3.5.0] at org.springframework.data.repository.query.parser.PartTree$Predicate.lambda$new$0(PartTree.java:389) ~[spring-data-commons-3.5.0.jar:3.5.0] at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197) ~[na:na] at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) ~[na:na] at java.base/java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:992) ~[na:na] at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) ~[na:na] at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) ~[na:na] at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:921) ~[na:na] at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[na:na] at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:682) ~[na:na] at org.springframework.data.repository.query.parser.PartTree$Predicate.<init>(PartTree.java:390) ~[spring-data-commons-3.5.0.jar:3.5.0] at org.springframework.data.repository.query.parser.PartTree.<init>(PartTree.java:100) ~[spring-data-commons-3.5.0.jar:3.5.0] at org.springframework.data.jpa.repository.query.PartTreeJpaQuery.<init>(PartTreeJpaQuery.java:101) ~[spring-data-jpa-3.5.0.jar:3.5.0] ... 61 common frames omitted

filetype

D:\biancheng\yf服务器代码\jdwlw>mvn clean package [INFO] Scanning for projects... [WARNING] [WARNING] Some problems were encountered while building the effective model for jdwlw:jdwlw:war:0.0.1-SNAPSHOT [WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-compiler-plugin is missing. @ line 358, column 12 [WARNING] [WARNING] It is highly recommended to fix these problems because they threaten the stability of your build. [WARNING] [WARNING] For this reason, future Maven versions might no longer support building such malformed projects. [WARNING] [INFO] [INFO] ----------------------------< jdwlw:jdwlw >----------------------------- [INFO] Building maven Maven Webapp 0.0.1-SNAPSHOT [INFO] from pom.xml [INFO] --------------------------------[ war ]--------------------------------- Downloading from jitpack.io: https://jitpack.io/com/google/code/ksoap2/ksoap2-android/3.6.4/ksoap2-android-3.6.4.pom Downloading from aliyun: https://maven.aliyun.com/repository/public/com/google/code/ksoap2/ksoap2-android/3.6.4/ksoap2-android-3.6.4.pom Downloading from central: https://repo.maven.apache.org/maven2/com/google/code/ksoap2/ksoap2-android/3.6.4/ksoap2-android-3.6.4.pom [WARNING] The POM for com.google.code.ksoap2:ksoap2-android:jar:3.6.4 is missing, no dependency information available Downloading from jitpack.io: https://jitpack.io/com/google/code/ksoap2/ksoap2-android/3.6.4/ksoap2-android-3.6.4.jar Downloading from aliyun: https://maven.aliyun.com/repository/public/com/google/code/ksoap2/ksoap2-android/3.6.4/ksoap2-android-3.6.4.jar Downloading from central: https://repo.maven.apache.org/maven2/com/google/code/ksoap2/ksoap2-android/3.6.4/ksoap2-android-3.6.4.jar [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 4.524 s [INFO] Finished at: 2025-06-22T23:13:30+08:00 [INFO] ------------------------------------------------------------------------ [ERROR] Failed to execute goal on project jdwlw: Could not resolve dependencies for project jdwlw:jdwlw:war:0.0.1-SNAPSHOT: Could not find artifact com.google.code.ksoap2:ksoap2-android:jar:3.6.4 in jitpack.io (https://jitpack.io) -> [Help 1] [ERROR] [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch. [ERROR] Re-run Maven using the -X switch to enable full debug logging. [ERROR] [ERROR] For more information about the errors and possible solutions, please read the following articles: [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/DependencyResolutionException 解决上述报错 pom.xml:<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>jdwlw</groupId> <artifactId>jdwlw</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>war</packaging> <name>maven Maven Webapp</name> <url>http://maven.apache.org</url> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> </properties> <repositories> <repository> <id>jitpack.io</id> <url>https://jitpack.io</url> </repository> <repository> <id>aliyun</id> <url>https://maven.aliyun.com/repository/public</url> </repository> </repositories> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>2.5</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>4.1.6.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>4.1.6.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>4.1.6.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>4.1.6.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aop</artifactId> <version>4.1.6.RELEASE</version> </dependency> <dependency> <groupId>com.google.code.ksoap2</groupId> <artifactId>ksoap2-android</artifactId> <version>3.6.4</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>4.1.6.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>4.1.6.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-orm</artifactId> <version>3.2.13.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context-support</artifactId> <version>3.2.2.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc-portlet</artifactId> <version>4.1.6.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-expression</artifactId> <version>4.1.6.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aspects</artifactId> <version>4.1.6.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-websocket</artifactId> <version>4.1.6.RELEASE</version> </dependency> <dependency> <groupId>quartz</groupId> <artifactId>quartz</artifactId> <version>1.5.2</version> </dependency> <dependency> <groupId>org.apache.ibatis</groupId> <artifactId>ibatis-sqlmap</artifactId> <version>2.3.4.726</version> </dependency> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.17</version> </dependency> <dependency> <groupId>commons-io</groupId> <artifactId>commons-io</artifactId> <version>2.4</version> </dependency> <dependency> <groupId>commons-logging</groupId> <artifactId>commons-logging</artifactId> <version>1.2</version> </dependency> <dependency> <groupId>commons-lang</groupId> <artifactId>commons-lang</artifactId> <version>2.6</version> </dependency> <dependency> <groupId>commons-dbcp</groupId> <artifactId>commons-dbcp</artifactId> <version>1.4</version> </dependency> <dependency> <groupId>commons-pool</groupId> <artifactId>commons-pool</artifactId> <version>1.6</version> </dependency> <dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>1.3.1</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.35</version> </dependency> <dependency> <groupId>com.belerweb</groupId> <artifactId>pinyin4j</artifactId> <version>2.5.0</version> </dependency> <dependency> <groupId>jstl</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <dependency> <groupId>com.google.code.gson</groupId> <artifactId>gson</artifactId> <version>2.5</version> </dependency> <dependency> <groupId>org.apache.httpcomponents</groupId> <artifactId>httpclient</artifactId> <version>4.4.1</version> </dependency> <dependency> <groupId>javax.mail</groupId> <artifactId>mail</artifactId> <version>1.5.0-b01</version> </dependency> <dependency> <groupId>cn.jpush.api</groupId> <artifactId>jpush-client</artifactId> <version>3.1.3</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>1.7.5</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> <version>1.7.5</version> </dependency> <dependency> <groupId>com.google.guava</groupId> <artifactId>guava</artifactId> <version>17.0</version> </dependency> <dependency> <groupId>com.squareup.okhttp</groupId> <artifactId>mockwebserver</artifactId> <version>1.5.4</version> <scope>test</scope> </dependency> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi</artifactId> <version>3.11</version> </dependency> <dependency> <groupId>net.sf.ehcache</groupId> <artifactId>ehcache</artifactId> <version>2.10.0</version> </dependency> <dependency> <groupId>javax.servlet.jsp</groupId> <artifactId>jsp-api</artifactId> <version>2.2</version> </dependency> <dependency> <groupId>com.lowagie</groupId> <artifactId>itext</artifactId> <version>2.1.7</version> </dependency> <dependency> <groupId>commons-net</groupId> <artifactId>commons-net</artifactId> <version>3.3</version> </dependency> <dependency> <groupId>com.mchange</groupId> <artifactId>c3p0</artifactId> <version>0.9.5.2</version> </dependency> <dependency> <groupId>org.apache.ws.commons.axiom</groupId> <artifactId>axiom-api</artifactId> <version>1.2.13</version> </dependency> <dependency> <groupId>dom4j</groupId> <artifactId>dom4j</artifactId> <version>1.6.1</version> </dependency> <dependency> <groupId>org.apache.axis</groupId> <artifactId>axis</artifactId> <version>1.4</version> </dependency> <dependency> <groupId>javax.xml.rpc</groupId> <artifactId>javax.xml.rpc-api</artifactId> <version>1.1.1</version> </dependency> <dependency> <groupId>org.apache.axis2</groupId> <artifactId>axis2</artifactId> <version>1.7.6</version> <type>pom</type> </dependency> <dependency> <groupId>org.apache.axis2</groupId> <artifactId>axis2-adb</artifactId> <version>1.7.6</version> </dependency> <dependency> <groupId>soap</groupId> <artifactId>soap</artifactId> <version>2.3</version> </dependency> <dependency> <groupId>commons-httpclient</groupId> <artifactId>commons-httpclient</artifactId> <version>3.1</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.9.10.4</version> </dependency> <dependency> <groupId>org.eclipse.paho</groupId> <artifactId>org.eclipse.paho.client.mqttv3</artifactId> <version>1.2.0</version> </dependency> <dependency> <groupId>cn.hutool</groupId> <artifactId>hutool-all</artifactId> <version>5.7.2</version> </dependency> </dependencies> <build> <finalName>jdwlw</finalName> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <configuration> <source>1.8</source> <target>1.8</target> <encoding>utf-8</encoding> <compilerArguments> <extdirs>${project.basedir}/src/main/webapp/WEB-INF/lib</extdirs> </compilerArguments> </configuration> </plugin> </plugins> <resources> <resource> <directory>src/main/resources</directory> <includes> <include>**/*.properties</include> <include>**/*.xml</include> </includes> <filtering>false</filtering> </resource> <resource> <directory>src/main/java</directory> <includes> <include>**/*.properties</include> <include>**/*.xml</include> </includes> <filtering>false</filtering> </resource> </resources> </build> </project>

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豆瓣时间
2025.05.25
这是处理JSON数据的核心组件,稳定而高效。
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城北伯庸
2025.04.08
jackson-core-2.5.0.jar在Spring4中有着广泛的应用。
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CyberNinja
2025.04.06
适用于处理各种数据格式转换。
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蔓誅裟華
2025.03.01
如果你是Java开发者,这款包将是你不可或缺的工具。
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开眼旅行精选
2025.02.17
Spring框架的忠实伴侣,jackson-core-2.5.0.jar包必备。
木鱼罐子
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