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

最新推荐文章于 2020-12-25 10:58:04 发布

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#spring boot #druid #RelaxedDataBinder

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本文详细介绍了在SpringBoot2.1.2版本中整合MyBatis、MySQL和Druid数据源遇到的问题及解决方案。主要错误为NoClassDefFoundError，原因在于druid版本过低，升级至1.1.10版本后问题得以解决。

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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>
        <!-- alibaba的druid数据库连接池 -->
        <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

 <!-- alibaba的druid数据库连接池 -->
        <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