Question

这是我第一次提出问题所以请指导我解决我可能犯的任何错误。

我正在使用Intellij，第一次使用Spring和Gradle -also来构建Web应用程序的后端部分。
它编译好了，但是一旦我尝试运行它，我得到以下错误：

2018-02-27 17:00:33.526  INFO 4308 --- [           main] g.n.e.s.k.KidspirationApplication        : Starting KidspirationApplication on mini-me with PID 4308 (started by Orestis in C:\Users\Orestis\Desktop\Software Technology\Stack-Over-Flowers\kidspiration)
2018-02-27 17:00:33.531  INFO 4308 --- [           main] g.n.e.s.k.KidspirationApplication        : No active profile set, falling back to default profiles: default
2018-02-27 17:00:33.606  INFO 4308 --- [           main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@551bdc27: startup date [Tue Feb 27 17:00:33 EET 2018]; root of context hierarchy
2018-02-27 17:00:33.969  WARN 4308 --- [           main] ationConfigEmbeddedWebApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanDefinitionStoreException: Failed to parse configuration class [gr.ntua.ece.softeng.kidspiration.KidspirationApplication]; nested exception is org.springframework.context.annotation.ConflictingBeanDefinitionException: Annotation-specified bean name 'registerController' for bean class [gr.ntua.ece.softeng.kidspiration.Register_Login.RegisterController] conflicts with existing, non-compatible bean definition of same name and class [gr.ntua.ece.softeng.kidspiration.Controllers.RegisterController]
2018-02-27 17:00:34.136 ERROR 4308 --- [           main] o.s.boot.SpringApplication               : Application startup failed

org.springframework.beans.factory.BeanDefinitionStoreException: Failed to parse configuration class [gr.ntua.ece.softeng.kidspiration.KidspirationApplication]; nested exception is 
org.springframework.context.annotation.ConflictingBeanDefinitionException: Annotation-specified bean name 'registerController' for bean class [gr.ntua.ece.softeng.kidspiration.Register_Login.RegisterController] conflicts with existing, non-compatible bean definition of same name and class [gr.ntua.ece.softeng.kidspiration.Controllers.RegisterController]
at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:181) ~[spring-context-4.3.14.RELEASE.jar:4.3.14.RELEASE]
at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:308) ~[spring-context-4.3.14.RELEASE.jar:4.3.14.RELEASE]
at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:228) ~[spring-context-4.3.14.RELEASE.jar:4.3.14.RELEASE]
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:272) ~[spring-context-4.3.14.RELEASE.jar:4.3.14.RELEASE]
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:92) ~[spring-context-4.3.14.RELEASE.jar:4.3.14.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:687) ~[spring-context-4.3.14.RELEASE.jar:4.3.14.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:525) ~[spring-context-4.3.14.RELEASE.jar:4.3.14.RELEASE]
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122) ~[spring-boot-1.5.10.RELEASE.jar:1.5.10.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:693) [spring-boot-1.5.10.RELEASE.jar:1.5.10.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:360) [spring-boot-1.5.10.RELEASE.jar:1.5.10.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:303) [spring-boot-1.5.10.RELEASE.jar:1.5.10.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1118) [spring-boot-1.5.10.RELEASE.jar:1.5.10.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1107) [spring-boot-1.5.10.RELEASE.jar:1.5.10.RELEASE]
at gr.ntua.ece.softeng.kidspiration.KidspirationApplication.main(KidspirationApplication.java:14) [classes/:na]  

Caused by: org.springframework.context.annotation.ConflictingBeanDefinitionException: Annotation-specified bean name 'registerController' for bean class [gr.ntua.ece.softeng.kidspiration.Register_Login.RegisterController] conflicts with existing, non-compatible bean definition of same name and class [gr.ntua.ece.softeng.kidspiration.Controllers.RegisterController]
at org.springframework.context.annotation.ClassPathBeanDefinitionScanner.checkCandidate(ClassPathBeanDefinitionScanner.java:345) ~[spring-context-4.3.14.RELEASE.jar:4.3.14.RELEASE]
at org.springframework.context.annotation.ClassPathBeanDefinitionScanner.doScan(ClassPathBeanDefinitionScanner.java:283) ~[spring-context-4.3.14.RELEASE.jar:4.3.14.RELEASE]
at org.springframework.context.annotation.ComponentScanAnnotationParser.parse(ComponentScanAnnotationParser.java:135) ~[spring-context-4.3.14.RELEASE.jar:4.3.14.RELEASE]
at org.springframework.context.annotation.ConfigurationClassParser.doProcessConfigurationClass(ConfigurationClassParser.java:287) ~[spring-context-4.3.14.RELEASE.jar:4.3.14.RELEASE]
at org.springframework.context.annotation.ConfigurationClassParser.processConfigurationClass(ConfigurationClassParser.java:245) ~[spring-context-4.3.14.RELEASE.jar:4.3.14.RELEASE]
at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:198) ~[spring-context-4.3.14.RELEASE.jar:4.3.14.RELEASE]
at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:167) ~[spring-context-4.3.14.RELEASE.jar:4.3.14.RELEASE]
... 13 common frames omitted

Process finished with exit code 1

build.gradle是：

buildscript {
    ext {
        springBootVersion = '1.5.10.RELEASE'
    }
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
    }
}

apply plugin: 'java'
apply plugin: 'eclipse'
apply plugin:'idea'
apply plugin: 'org.springframework.boot'

group = 'gr.ntua.ece.softeng'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = 1.8
targetCompatibility = 1.8

jar {
baseName = 'kidspiration-platform'
version = '0.1.0'
}

repositories {
mavenCentral()
}

dependencies {
compile('org.springframework.boot:spring-boot-starter-web')
compile('org.springframework:spring-jdbc')
compile('mysql:mysql-connector-java')
compile('com.h2database:h2')
//runtime('mysql:mysql-connector-java')
}

ApplicationConfig.java是：

package gr.ntua.ece.softeng.kidspiration.Configuration;

import org.springframework.beans.factory.annotation.Autowired;
import javax.sql.DataSource;

//import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.annotation.*;
import org.springframework.core.env.Environment;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.jdbc.datasource.DriverManagerDataSource;
import org.springframework.stereotype.Controller;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;

@Configuration
@EnableTransactionManagement
@ComponentScan(basePackages = "gr.ntua.ece.softeng.kidspiration")
@PropertySource(value = {"classpath:application.properties"})
//@EnableAutoConfiguration

public class ApplicationConfig {

@Autowired
private Environment env;

@Bean
public DataSource datasource() {
    DriverManagerDataSource dataSource = new DriverManagerDataSource();
    dataSource.setDriverClassName(env.getRequiredProperty("spring.datasource.driver-class-name"));
    dataSource.setUrl(env.getRequiredProperty("spring.datasource.url"));
    dataSource.setUsername(env.getRequiredProperty("spring.datasource.username"));
    dataSource.setPassword(env.getRequiredProperty("spring.datasource.password"));
    return dataSource;
}

@Bean
public JdbcTemplate jdbcTemplate(DataSource dataSource) {
    JdbcTemplate jdbcTemplate = new JdbcTemplate(dataSource);
    jdbcTemplate.setResultsMapCaseInsensitive(true);
    return jdbcTemplate;
}

@Bean
public PlatformTransactionManager txManager() {
    return new DataSourceTransactionManager(datasource()); //check later if datasource could be passed as parameter
}
}

Application.Java是：

package gr.ntua.ece.softeng.kidspiration;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.scheduling.annotation.EnableScheduling;

@SpringBootApplication
@EnableScheduling

public class KidspirationApplication {

    public static void main(String[] args) {

        SpringApplication.run(KidspirationApplication.class, args);
    }
}

到目前为止，我还没有设法确定负责该错误消息的特定代码部分，并且源代码已扩展。
所以，如果你想看到它的一部分或全部，我会感谢你提出一个简单的方法来呈现它！

我已尝试重命名“registerController”，但它只会导致错误消息的轻微更改。

请告诉我，如果我没有足够的解释或给出太少的细节任何形式的帮助或建议都将不胜感激。

Answer 1

从配置文件中删除组件扫描。它不需要，因为它被卷入SpringBootApplication注释。

https://docs.spring.io/spring-boot/docs/current/api/org/springframework/boot/autoconfigure/SpringBootApplication.html

@Target(value=TYPE)
 @Retention(value=RUNTIME)
 @Documented
 @Inherited
 @SpringBootConfiguration
 @EnableAutoConfiguration
 @ComponentScan(excludeFilters={@ComponentScan.Filter(type=CUSTOM,classes=TypeExcludeFilter.class),})
public @interface SpringBootApplication

你也可以删除@PropertySource(value = {"classpath:application.properties"}) spring boot会自动加载它。

有关详细信息，请参阅https://docs.spring.io/spring-boot/docs/current/reference/html/boot-features-external-config.html#boot-features-external-config。

无法解析配置类Spring

1 个答案: