Java 启动 ApplicationContext 时出错。要显示条件报告，请在启用“调试”的情况下重新运行您的应用程序
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/49991395/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
提示：将鼠标放在中文语句上可以显示对应的英文。显示中英文
时间：2020-08-12 03:11:03 来源:igfitidea点击:
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled
提问by LedBaron
Getting this error when trying to run my Java with Maven using Intellij:
尝试使用 Intellij 使用 Maven 运行我的 Java 时出现此错误：
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled. 2018-04-24 01:23:18.949 ERROR 22389 --- [ main] o.s.boot.SpringApplication : Application run failed
启动 ApplicationContext 时出错。要显示条件报告，请在启用“调试”的情况下重新运行您的应用程序。2018-04-24 01:23:18.949 错误 22389 --- [main] osboot.SpringApplication：应用程序运行失败
Any help appreciated!
任何帮助表示赞赏！
MAIN:
主要的：
package com.example.demo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class DemoApplication {
public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}
}
XML:
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>com.example</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>demo</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.1.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
<vaadin.version>8.3.1</vaadin.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-bom</artifactId>
<version>${vaadin.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
package com.example.demo;
import org.springframework.data.annotation.Id;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
@Entity
public class Todo {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private long id;
private String text;
private boolean done;
public Todo() {
}
public Todo(String text) {this.text = text; }
public Todo(String text, boolean done) {
this.text = text;
this.done = done;
}
public String getText() { return text;}
public void setText(String text) { this.text = text; }
public boolean isDone() { return done; }
public void setDone(boolean done) { this.done = done; }
}
package com.example.demo;
import com.vaadin.icons.VaadinIcons;
import com.vaadin.server.VaadinRequest;
import com.vaadin.spring.annotation.SpringUI;
import com.vaadin.ui.*;
import com.vaadin.ui.themes.ValoTheme;
import org.springframework.beans.factory.annotation.Autowired;
@SpringUI
public class TodoUI extends UI {
private VerticalLayout root;
@Autowired
TodoLayout todoLayout;
@Override
protected void init(VaadinRequest request) {
setupLayout();
addHeader();
addForm();
addTodoList();
addDeleteButton();
}
private void addDeleteButton() {
root.addComponent(new Button("Delete completed"));
}
private void addTodoList() {
todoLayout.setWidth("80%");
root.addComponent(todoLayout);
}
private void addForm() {
HorizontalLayout formLayout = new HorizontalLayout();
formLayout.setWidth("80%");
TextField task = new TextField();
Button add = new Button("");
add.addStyleName(ValoTheme.BUTTON_PRIMARY);
add.setIcon(VaadinIcons.PLUS);
formLayout.addComponentsAndExpand(task);
formLayout.addComponents(add);
root.addComponent(formLayout);
}
private void addHeader() {
Label header = new Label("TODOs");
header.addStyleName(ValoTheme.LABEL_H1);
root.addComponent(header);
}
private void setupLayout() {
root = new VerticalLayout();
root.setDefaultComponentAlignment(Alignment.MIDDLE_CENTER);
setContent(root);
}
}
Interface class:
接口类：
package com.example.demo;
import org.springframework.data.jpa.repository.JpaRepository;
public interface TodoRepository extends JpaRepository<Todo, Long> {
}
Layout:
布局：
package com.example.demo;
import com.vaadin.spring.annotation.SpringComponent;
import com.vaadin.ui.VerticalLayout;
@SpringComponent
public class TodoLayout extends VerticalLayout {
}
SQL:
查询语句：
CREATE TABLE IF NOT EXISTS Todo(id IDENTITY PRIMARY KEY, done BOOLEAN,
text VARCHAR )
DELETE FROM Todo;
INSERT INTO Todo VALUES(1, true, 'Prepare presentation');
INSERT INTO Todo VALUES(2, true, 'Procrastinate');
INSERT INTO Todo VALUES(3, FALSE, 'Have presentation');
LOG-Trace after trying to run application:
尝试运行应用程序后的日志跟踪：
Unconditional classes:
----------------------
org.springframework.boot.autoconfigure.context.PropertyPlaceholderAutoConfiguration
org.springframework.boot.autoconfigure.web.embedded.EmbeddedWebServerFactoryCustomizerAutoConfiguration
org.springframework.boot.autoconfigure.security.reactive.ReactiveSecurityAutoConfiguration
org.springframework.boot.autoconfigure.context.ConfigurationPropertiesAutoConfiguration
org.springframework.boot.autoconfigure.info.ProjectInfoAutoConfiguration
2018-04-24 10:23:25.299 ERROR 22637 --- [ main] o.s.boot.SpringApplication : Application run failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Invocation of init method failed; nested exception is org.hibernate.AnnotationException: No identifier specified for entity: com.example.demo.Todo
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1702) ~[spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:579) ~[spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:501) ~[spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBeanmyField = (MyClass)SpringApplicationContext.getBean(MyClass.BEAN_NAME);
(AbstractBeanFactory.java:317) ~[spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) ~[spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:315) ~[spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1089) ~[spring-context-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:859) ~[spring-context-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) ~[spring-context-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140) ~[spring-boot-2.0.1.RELEASE.jar:2.0.1.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) [spring-boot-2.0.1.RELEASE.jar:2.0.1.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:395) [spring-boot-2.0.1.RELEASE.jar:2.0.1.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:327) [spring-boot-2.0.1.RELEASE.jar:2.0.1.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1255) [spring-boot-2.0.1.RELEASE.jar:2.0.1.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1243) [spring-boot-2.0.1.RELEASE.jar:2.0.1.RELEASE]
at com.example.demo.DemoApplication.main(DemoApplication.java:10) [classes/:na]
Caused by: org.hibernate.AnnotationException: No identifier specified for entity: com.example.demo.Todo
at org.hibernate.cfg.InheritanceState.determineDefaultAccessType(InheritanceState.java:266) ~[hibernate-core-5.2.16.Final.jar:5.2.16.Final]
at org.hibernate.cfg.InheritanceState.getElementsToProcess(InheritanceState.java:211) ~[hibernate-core-5.2.16.Final.jar:5.2.16.Final]
at org.hibernate.cfg.AnnotationBinder.bindClass(AnnotationBinder.java:730) ~[hibernate-core-5.2.16.Final.jar:5.2.16.Final]
at org.hibernate.boot.model.source.internal.annotations.AnnotationMetadataSourceProcessorImpl.processEntityHierarchies(AnnotationMetadataSourceProcessorImpl.java:249) ~[hibernate-core-5.2.16.Final.jar:5.2.16.Final]
at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.processEntityHierarchies(MetadataBuildingProcess.java:222) ~[hibernate-core-5.2.16.Final.jar:5.2.16.Final]
at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:265) ~[hibernate-core-5.2.16.Final.jar:5.2.16.Final]
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:861) ~[hibernate-core-5.2.16.Final.jar:5.2.16.Final]
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:888) ~[hibernate-core-5.2.16.Final.jar:5.2.16.Final]
at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:57) ~[spring-orm-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) ~[spring-orm-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:390) ~[spring-orm-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:377) ~[spring-orm-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341) ~[spring-orm-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1761) ~[spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1698) ~[spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE]
... 16 common frames omitted
Disconnected from the target VM, address: '127.0.0.1:62208', transport: 'socket'
Process finished with exit code 1
回答by Stefan
You have mixed two annotation types in your Todo class.
您在 Todo 类中混合了两种注释类型。
Remove import org.springframework.data.annotation.Idand add import javax.persistence.Id.
删除import org.springframework.data.annotation.Id并添加import javax.persistence.Id。
回答by Howard007
When I got this error, it turned out to be due to the fact that I was attempting to access the application context in a field initialization or constructor in a class (in this case AuthenticationFilter extends UsernamePasswordAuthenticationFilter) that gets instantiated BEFORE THE CONTEXT IS AVAILABLE.
当我收到此错误时，结果证明是由于我试图在类中的字段初始化或构造函数中访问应用程序上下文（在本例中为 AuthenticationFilter 扩展 UsernamePasswordAuthenticationFilter），该类在上下文可用之前被实例化。
##代码##By moving this statement to a method that gets called early in this class's lifecycle but long after the constructor, the error was resolved and the app started up normally.
通过将此语句移动到在该类的生命周期早期但在构造函数之后很久被调用的方法，错误得到解决并且应用程序正常启动。
The really annoying thing, as with much of the opaqueness of Spring Boot's dependency injection model, is that while at the end of the day it was a classic case of NullPointerException, the log wouldn't give the class and line number where the error was occurring; so I was on my own to deduct from indirect evidence what was going on.
与 Spring Boot 依赖注入模型的许多不透明性一样，真正令人讨厌的是，虽然在一天结束时它是 NullPointerException 的经典案例，但日志不会给出错误所在的类和行号发生；所以我自己从间接证据中推断出正在发生的事情。
