Spring10種常見異常解決方法
阿新 • • 發佈:2019-01-01
在程式設計師生涯當中,提到最多的應該就是SSH三大框架了。作為第一大框架的Spring框架,我們經常使用。
三、找不到jackson.jar的異常
然而在使用過程中,遇到過很多的常見異常,我在這裡總結一下,大家共勉。
一、找不到配置檔案的異常
- org.springframework.beans.factory.BeanDefinitionStoreException: IOException parsing XML
- document from class path resource [com/herman/ss/controller]; nested exception is java.io.FileNotFoundException:
- class path resource [com/herman/ss/controller] cannot be opened because it does not exist
- <init-param>
- <param-name>contextConfigLocation</param-name>
- <param-value>classpath:com/herman/ss/config/testAjax.xml</param-value>
- </init-param>
- nested exception is org.xml.sax.SAXParseException: cvc-complex-type.2.4.c: The matching wildcard is strict,
- but no declaration can be found for element 'util:list'.
三、找不到jackson.jar的異常
- StandardWrapper.Throwable
- java.lang.NoClassDefFoundError: org/codehaus/jackson/JsonProcessingException
缺少jackson的jar包,匯入jackson-all-1.9.5.jar即可
四、bean不是唯一的異常
- org.springframework.beans.factory.NoUniqueBeanDefinitionException:
- No qualifying bean of type [com.herman.ss.pojo.Person] is defined:
- expected single matching bean but found 7: person0,person1,person2,person3,person4,person5,person6
- at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBean(DefaultListableBeanFactory.java:313)
- at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:985)
- at com.herman.ss.test.Test0.test1(Test0.java:35)
- at com.herman.ss.test.Test0.main(Test0.java:111)
五、缺少日誌jar包
- java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory
- Caused by: java.lang.ClassNotFoundException: org.apache.commons.logging.LogFactory
六、找不到bean異常
- org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'filter2' is defined
六、缺少spring-webmvc-4.0.6.RELEASE.jar包
- 嚴重: Error loading WebappClassLoader
- context: /Struts_Spring_Project
- delegate: false
- repositories:
- /WEB-INF/classes/
- ----------> Parent Classloader:
- [email protected]b33d0a
- org.springframework.web.servlet.DispatcherServlet
- java.lang.ClassNotFoundException: org.springframework.web.servlet.DispatcherServlet
解決方案:在專案中加入spring的mvc架包即可。如我的spring版本為4.0.6的,那麼就把spring-webmvc-4.0.6.RELEASE.jar新增進去即可。
七、缺少spring-aop-4.0.6.RELEASE.jar包
- java.lang.NoClassDefFoundError: org/springframework/aop/TargetSource
- java.lang.ClassNotFoundException: org.springframework.aop.TargetSource
八、缺少spring-expression-4.0.6.RELEASE.jar包
- java.lang.NoClassDefFoundError: org/springframework/expression/ExpressionParser
- java.lang.ClassNotFoundException: org.springframework.expression.ExpressionParser
解決方案:在專案中加入spring的expression架包即可。如我的spring版本為4.0.6的,那麼就把spring-expression-4.0.6.RELEASE.jar新增進去即可。
九、bean的名字name或者id或者別名alias已經存在
- org.springframework.beans.factory.parsing.BeanDefinitionParsingException:
- Configuration problem: Bean name 'a' is already used in this <beans> element
解決方法:把重複的名字改個名字即可。
十、bean的自動載入找不到相對應的bean問題
- org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.yyc.ym.biz.YycBiz] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}