spring boot2 druid java.lang.ClassNotFoundException: org.springframework.boot.bind.RelaxedDataBinder

Love The Way You Lie 2022-04-23 04:48 133阅读 0赞

spring boot 2.1.2.RELEASE版本中整合mybatis mysql druid数据源  
pom文件部分内容如下

<dependency>
                <groupId>org.mybatis.spring.boot</groupId>
                <artifactId>mybatis-spring-boot-starter</artifactId>
                <version>2.0.0</version>
            </dependency>
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>5.1.40</version>
            </dependency>
            
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid-spring-boot-starter</artifactId>
                <version>1.1.0</version>
            </dependency>

运行出现如下错误

Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.sql.DataSource]: Factory method 'dataSource' threw exception; nested exception is java.lang.NoClassDefFoundError: org/springframework/boot/bind/RelaxedDataBinder
    	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185) ~[spring-beans-5.1.4.RELEASE.jar:5.1.4.RELEASE]
    	at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:622) ~[spring-beans-5.1.4.RELEASE.jar:5.1.4.RELEASE]
    	... 19 common frames omitted
    Caused by: java.lang.NoClassDefFoundError: org/springframework/boot/bind/RelaxedDataBinder
    	at com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceBuilder.bind(DruidDataSourceBuilder.java:48) ~[druid-spring-boot-starter-1.1.0.jar:na]
    	at com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceBuilder.build(DruidDataSourceBuilder.java:41) ~[druid-spring-boot-starter-1.1.0.jar:na]
    	at com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceAutoConfigure.dataSource(DruidDataSourceAutoConfigure.java:44) ~[druid-spring-boot-starter-1.1.0.jar:na]
    	at com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceAutoConfigure$$EnhancerBySpringCGLIB$$57f6c38a.CGLIB$dataSource$0(<generated>) ~[druid-spring-boot-starter-1.1.0.jar:na]
    	at com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceAutoConfigure$$EnhancerBySpringCGLIB$$57f6c38a$$FastClassBySpringCGLIB$$d41bf177.invoke(<generated>) ~[druid-spring-boot-starter-1.1.0.jar:na]
    	at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244) ~[spring-core-5.1.4.RELEASE.jar:5.1.4.RELEASE]
    	at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:363) ~[spring-context-5.1.4.RELEASE.jar:5.1.4.RELEASE]
    	at com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceAutoConfigure$$EnhancerBySpringCGLIB$$57f6c38a.dataSource(<generated>) ~[druid-spring-boot-starter-1.1.0.jar:na]
    	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_162]
    	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_162]
    	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_162]
    	at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_162]
    	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ~[spring-beans-5.1.4.RELEASE.jar:5.1.4.RELEASE]
    	... 20 common frames omitted
    Caused by: java.lang.ClassNotFoundException: org.springframework.boot.bind.RelaxedDataBinder
    	at java.net.URLClassLoader.findClass(URLClassLoader.java:381) ~[na:1.8.0_162]
    	at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[na:1.8.0_162]
    	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:338) ~[na:1.8.0_162]
    	at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[na:1.8.0_162]
    	... 33 common frames omitted

**原因是引用的druid版本过低  
改为最新版本druid1.1.10即可成功启动**

<dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid-spring-boot-starter</artifactId>
                <version>1.1.10</version>
            </dependency>

以下是druid与spring boot集成官方文档

> [https://github.com/alibaba/druid/tree/master/druid-spring-boot-starter][https_github.com_alibaba_druid_tree_master_druid-spring-boot-starter]

如果上述方案没有解决的话，以下是我解决此问题时搜索到的解决方案，看看是否有帮助  
[https://blog.csdn.net/u013176696/article/details/82733531][https_blog.csdn.net_u013176696_article_details_82733531]

[https_github.com_alibaba_druid_tree_master_druid-spring-boot-starter]: https://github.com/alibaba/druid/tree/master/druid-spring-boot-starter
[https_blog.csdn.net_u013176696_article_details_82733531]: https://blog.csdn.net/u013176696/article/details/82733531