[英]Springboot app fails to run when implementing MongoRepository
我有一個管理ID的Springboot應用程序。 當前,它讀取ID並將其保存到文件中。 我正在嘗試使用Spring內置的Mongo存儲庫將該功能轉移到MongoDB。
服務提供商存儲庫
package repositories;
import org.springframework.data.mongodb.repository.MongoRepository;
import models.ServiceProvider;
public interface ServiceProviderRepository extends MongoRepository<ServiceProvider, String> {
public ServiceProvider findByID(int id);
public ServiceProvider findByUsername(String username);
}
服務提供者
package models;
import org.springframework.data.annotation.Id;
public class ServiceProvider {
@Id
private String id;
private int providerId;
private String username;
public ServiceProvider() {}
public ServiceProvider(int id, String username) {
this.providerId = id;
this.username = username;
}
public ServiceProvider(int id) {
this.providerId = id;
}
public int getId() {
return providerId;
}
@Override
public String toString() {
return String.format("ServiceProvider[id=%s, providerId='%s', username='%s']", id, providerId, username);
}
}
應用
package app;
import java.io.IOException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.client.RestTemplateBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.data.mongodb.repository.config.EnableMongoRepositories;
import org.springframework.web.client.RestTemplate;
import controllers.ServiceProviderController;
import models.ServiceProvider;
import repositories.ServiceProviderRepository;
@SpringBootApplication
@ComponentScan(basePackageClasses = ServiceProviderController.class9)
@EnableMongoRepositories(basePackageClasses = ServiceProviderRepository.class)
public class Application implements CommandLineRunner {
@Autowired
private ServiceProviderRepository repository;
public static void main(String[] args) throws SecurityException, IOException {
SpringApplication.run(Application.class, args);
}
@Override
public void run(String... args) {
repository.deleteAll();
repository.save(new ServiceProvider(1234, "Provider1"));
}
@Bean
public RestTemplate restTemplate(RestTemplateBuilder builder) {
return builder.build();
}
}
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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.rquinlan</groupId>
<artifactId>sti-pa-POC</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>sti-pa-POC Maven Webapp</name>
<url>http://maven.apache.org</url>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.2.RELEASE</version>
</parent>
<repositories>
<repository>
<id>nexus</id>
<url>.....</url>
</repository>
</repositories>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger2</artifactId>
<version>2.9.0</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger-ui</artifactId>
<version>2.9.0</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.auth0</groupId>
<artifactId>java-jwt</artifactId>
<version>3.3.0</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
</dependency>
<dependency>
<groupId>org.json</groupId>
<artifactId>json</artifactId>
<version>20090211</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
</dependency>
<dependency>
<groupId>io.swagger</groupId>
<artifactId>swagger-jersey-jaxrs</artifactId>
<version>1.5.0</version>
</dependency>
</dependencies>
<build>
<finalName>sti-pa-POC</finalName>
</build>
</project>
目的是通過控制器通過端點訪問存儲庫,但現在我只是在App.java中進行操作以實現功能。 我已經在spring指南網站上完成了Customer教程,並且可以運行它,並且我在這里使用的格式基本相同。 當我嘗試通過Maven運行它時,我得到了堆棧跟蹤
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'application': Post-processing of merged bean definition failed; nested exception is java.lang.IllegalStateException: Failed to introspect Class [app.Application] from ClassLoader [org.springframework.boot.devtools.restart.classloader.RestartClassLoader@1aa76ad7]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:556) ~[spring-beans-5.0.6.RELEASE.jar:5.0.6.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:501) ~[spring-beans-5.0.6.RELEASE.jar:5.0.6.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:317) ~[spring-beans-5.0.6.RELEASE.jar:5.0.6.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) ~[spring-beans-5.0.6.RELEASE.jar:5.0.6.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:315) ~[spring-beans-5.0.6.RELEASE.jar:5.0.6.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.0.6.RELEASE.jar:5.0.6.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:760) ~[spring-beans-5.0.6.RELEASE.jar:5.0.6.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:869) ~[spring-context-5.0.6.RELEASE.jar:5.0.6.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) ~[spring-context-5.0.6.RELEASE.jar:5.0.6.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140) ~[spring-boot-2.0.2.RELEASE.jar:2.0.2.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) [spring-boot-2.0.2.RELEASE.jar:2.0.2.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:395) [spring-boot-2.0.2.RELEASE.jar:2.0.2.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:327) [spring-boot-2.0.2.RELEASE.jar:2.0.2.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1255) [spring-boot-2.0.2.RELEASE.jar:2.0.2.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1243) [spring-boot-2.0.2.RELEASE.jar:2.0.2.RELEASE]
at app.Application.main(Application.java:40) [classes/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_171]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_171]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_171]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_171]
at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.0.2.RELEASE.jar:2.0.2.RELEASE]
Caused by: java.lang.IllegalStateException: Failed to introspect Class [app.Application] from ClassLoader [org.springframework.boot.devtools.restart.classloader.RestartClassLoader@1aa76ad7]
at org.springframework.util.ReflectionUtils.getDeclaredFields(ReflectionUtils.java:758) ~[spring-core-5.0.6.RELEASE.jar:5.0.6.RELEASE]
at org.springframework.util.ReflectionUtils.doWithLocalFields(ReflectionUtils.java:690) ~[spring-core-5.0.6.RELEASE.jar:5.0.6.RELEASE]
at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.buildResourceMetadata(CommonAnnotationBeanPostProcessor.java:355) ~[spring-context-5.0.6.RELEASE.jar:5.0.6.RELEASE]
at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.findResourceMetadata(CommonAnnotationBeanPostProcessor.java:339) ~[spring-context-5.0.6.RELEASE.jar:5.0.6.RELEASE]
at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessMergedBeanDefinition(CommonAnnotationBeanPostProcessor.java:298) ~[spring-context-5.0.6.RELEASE.jar:5.0.6.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyMergedBeanDefinitionPostProcessors(AbstractAutowireCapableBeanFactory.java:1020) ~[spring-beans-5.0.6.RELEASE.jar:5.0.6.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553) ~[spring-beans-5.0.6.RELEASE.jar:5.0.6.RELEASE]
... 20 common frames omitted
Caused by: java.lang.NoClassDefFoundError: org/springframework/data/mongodb/repository/MongoRepository
at java.lang.ClassLoader.defineClass1(Native Method) ~[na:1.8.0_171]
at java.lang.ClassLoader.defineClass(ClassLoader.java:763) ~[na:1.8.0_171]
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) ~[na:1.8.0_171]
at java.net.URLClassLoader.defineClass(URLClassLoader.java:467) ~[na:1.8.0_171]
at java.net.URLClassLoader.access$100(URLClassLoader.java:73) ~[na:1.8.0_171]
at java.net.URLClassLoader$1.run(URLClassLoader.java:368) ~[na:1.8.0_171]
at java.net.URLClassLoader$1.run(URLClassLoader.java:362) ~[na:1.8.0_171]
at java.security.AccessController.doPrivileged(Native Method) ~[na:1.8.0_171]
at java.net.URLClassLoader.findClass(URLClassLoader.java:361) ~[na:1.8.0_171]
at org.springframework.boot.devtools.restart.classloader.RestartClassLoader.findClass(RestartClassLoader.java:163) ~[spring-boot-devtools-2.0.2.RELEASE.jar:2.0.2.RELEASE]
at org.springframework.boot.devtools.restart.classloader.RestartClassLoader.loadClass(RestartClassLoader.java:145) ~[spring-boot-devtools-2.0.2.RELEASE.jar:2.0.2.RELEASE]
at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[na:1.8.0_171]
at java.lang.Class.getDeclaredFields0(Native Method) ~[na:1.8.0_171]
at java.lang.Class.privateGetDeclaredFields(Class.java:2583) ~[na:1.8.0_171]
at java.lang.Class.getDeclaredFields(Class.java:1916) ~[na:1.8.0_171]
at org.springframework.util.ReflectionUtils.getDeclaredFields(ReflectionUtils.java:753) ~[spring-core-5.0.6.RELEASE.jar:5.0.6.RELEASE]
... 26 common frames omitted
Caused by: java.lang.ClassNotFoundException: org.springframework.data.mongodb.repository.MongoRepository
at java.net.URLClassLoader.findClass(URLClassLoader.java:381) ~[na:1.8.0_171]
at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[na:1.8.0_171]
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349) ~[na:1.8.0_171]
at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[na:1.8.0_171]
at org.springframework.boot.devtools.restart.classloader.RestartClassLoader.loadClass(RestartClassLoader.java:148) ~[spring-boot-devtools-2.0.2.RELEASE.jar:2.0.2.RELEASE]
at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[na:1.8.0_171]
... 42 common frames omitted
當我嘗試將獨立應用程序合並到實際應用程序中時,其格式和格式基本相同,因此我無法弄清楚是什么導致了錯誤。 任何幫助表示贊賞。 謝謝。
這里有幾件事:
您需要將模型標記為@Document
:
@Document公共類ServiceProvider {
@Id private String id; private int providerId; private String username; //...
}
您不需要@ComponentScan
和@EnableMongoRepositories
因為@SpringBootApplication
啟用了@ComponentScan
。 在此處查找文檔。
@SpringBootApplication // @ComponentScan(basePackageClasses = ServiceProviderController.class9) // @EnableMongoRepositories(basePackageClasses = ServiceProviderRepository.class) public class Application implements CommandLineRunner { @Autowired private ServiceProviderRepository repository; // ... }
最后,您需要告訴spring為MongoDB創建一個上下文:
application.yml
spring:
data:
mongodb:
database: test
host: localhost
port: 27017
您可以在GitHub上找到可以正常使用的項目入門程序的最簡單版本
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