Invalid target for Validator with @ConfigurationProperties on Map #8149
Description
Spring Boot 1.5.1.RELEASE
Application fails to start when configuration contains Map bean annotated with @ConfigurationProperties (with prefix).
Same code works with Spring Boot 1.4.4.RELEASE.
Exception:
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'map': Could not bind properties to HashMap (prefix=map, ignoreInvalidFields=false, ignoreUnknownFields=true, ignoreNestedProperties=false); nested exception is java.lang.IllegalStateException: Invalid target for Validator [org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor$ValidatedLocalValidatorFactoryBean@376b4233]: org.springframework.boot.bind.RelaxedDataBinder$MapHolder@2fd66ad3
at org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor.postProcessBeforeInitialization(ConfigurationPropertiesBindingPostProcessor.java:334) ~[spring-boot-1.5.1.RELEASE.jar!/:1.5.1.RELEASE]
at org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor.postProcessBeforeInitialization(ConfigurationPropertiesBindingPostProcessor.java:296) ~[spring-boot-1.5.1.RELEASE.jar!/:1.5.1.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:409) ~[spring-beans-4.3.6.RELEASE.jar!/:4.3.6.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1620) ~[spring-beans-4.3.6.RELEASE.jar!/:4.3.6.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555) ~[spring-beans-4.3.6.RELEASE.jar!/:4.3.6.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483) ~[spring-beans-4.3.6.RELEASE.jar!/:4.3.6.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.3.6.RELEASE.jar!/:4.3.6.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.3.6.RELEASE.jar!/:4.3.6.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.3.6.RELEASE.jar!/:4.3.6.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.3.6.RELEASE.jar!/:4.3.6.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761) ~[spring-beans-4.3.6.RELEASE.jar!/:4.3.6.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:866) ~[spring-context-4.3.6.RELEASE.jar!/:4.3.6.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542) ~[spring-context-4.3.6.RELEASE.jar!/:4.3.6.RELEASE]
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122) ~[spring-boot-1.5.1.RELEASE.jar!/:1.5.1.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:737) [spring-boot-1.5.1.RELEASE.jar!/:1.5.1.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:370) [spring-boot-1.5.1.RELEASE.jar!/:1.5.1.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:314) [spring-boot-1.5.1.RELEASE.jar!/:1.5.1.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1162) [spring-boot-1.5.1.RELEASE.jar!/:1.5.1.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1151) [spring-boot-1.5.1.RELEASE.jar!/:1.5.1.RELEASE]
at app.Application.main(Application.java:24) [classes!/:1.0-SNAPSHOT]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_121]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_121]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_121]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_121]
at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48) [app-1.0-SNAPSHOT.jar:1.0-SNAPSHOT]
at org.springframework.boot.loader.Launcher.launch(Launcher.java:87) [app-1.0-SNAPSHOT.jar:1.0-SNAPSHOT]
at org.springframework.boot.loader.Launcher.launch(Launcher.java:50) [app-1.0-SNAPSHOT.jar:1.0-SNAPSHOT]
at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:51) [app-1.0-SNAPSHOT.jar:1.0-SNAPSHOT]
Caused by: java.lang.IllegalStateException: Invalid target for Validator [org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor$ValidatedLocalValidatorFactoryBean@376b4233]: org.springframework.boot.bind.RelaxedDataBinder$MapHolder@2fd66ad3
at org.springframework.validation.DataBinder.assertValidators(DataBinder.java:567) ~[spring-context-4.3.6.RELEASE.jar!/:4.3.6.RELEASE]
at org.springframework.validation.DataBinder.setValidator(DataBinder.java:558) ~[spring-context-4.3.6.RELEASE.jar!/:4.3.6.RELEASE]
at org.springframework.boot.bind.PropertiesConfigurationFactory.doBindPropertiesToTarget(PropertiesConfigurationFactory.java:257) ~[spring-boot-1.5.1.RELEASE.jar!/:1.5.1.RELEASE]
at org.springframework.boot.bind.PropertiesConfigurationFactory.bindPropertiesToTarget(PropertiesConfigurationFactory.java:240) ~[spring-boot-1.5.1.RELEASE.jar!/:1.5.1.RELEASE]
at org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor.postProcessBeforeInitialization(ConfigurationPropertiesBindingPostProcessor.java:329) ~[spring-boot-1.5.1.RELEASE.jar!/:1.5.1.RELEASE]
... 27 common frames omitted
Example
pom.xml:
<?xml version="1.0" encoding="UTF-8"?>
<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>test</groupId>
<artifactId>app</artifactId>
<version>1.0-SNAPSHOT</version>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.1.RELEASE</version>
</parent>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>src/main/java/app/Application.java:
package app;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.HashMap;
import java.util.Map;
@SpringBootApplication
@RestController
public class Application {
@Bean
@ConfigurationProperties(prefix = "map")
public Map<String, String> map() {
return new HashMap<>();
}
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
@RequestMapping("/")
public Map<String, String> index() throws Exception {
return map();
}
}application.yml:
map:
key1: "value1"
key2: "value2"
key3: "value3"