Spring-Boot无法在Eclipse中运行，也无法识别自动装配的DataSource

时间：2018-03-21 12:48:48

标签： java spring eclipse spring-boot

我正在尝试在Spring-boot的控制下运行简单的API服务器并且有两个问题：
1.在Eclipse（Neon.1发行版（4.6.1））中，当我尝试启动应用程序时，我收到有关servlet容器的错误（在主题末尾观察错误）。
2.当我运行gradle build并尝试运行jar时，我看到有关未设置DataSource bean的错误。

更新 ：问题1并不是什么大不了的事，因为其他人能够完美地从IDEA运行项目（并且工作正常）。这很有趣，因为在任何情况下，即使你将DataSource从main移动到@Configuration类，gradle建立的jar也会在主题末尾列出错误，关于错过的数据源。这意味着，我在Eclipse中遇到问题（我的本地问题）和gradle构建任务的问题。

更新2 ：问题由Spring Boot auto configuration for datasource解决了我仍然不知道为什么dataSource无法自动装配，但这种方式更好，因为从链接使用方法我可以从属性获取值并使用不同的环境切换它们。谢谢大家的帮助。

我的代码如下： Application.java：

 package com.my.package;

import javax.sql.DataSource;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.support.AbstractApplicationContext;

import com.my.package.MvcConfig;

@SpringBootApplication
@EnableAutoConfiguration
@ComponentScan
public class Application {

    @Autowired
    DataSource dataSource;

    @SuppressWarnings({ "unused", "resource" })
    public static void main(String[] args) {
        AbstractApplicationContext context = new AnnotationConfigApplicationContext(MvcConfig.class);
        SpringApplication.run(Application.class, args);
    }
}

MvcConfig.java：

package com.my.package;


import org.springframework.context.annotation.*;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;

@Configuration
public class MvcConfig extends WebMvcConfigurerAdapter {


    @Override
    public void addResourceHandlers(final ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/resources/**").addResourceLocations("/resources/");
    }
}

Application.properties：

# ===============================
# = DATA SOURCE
# ===============================
spring.datasource.url = jdbc:mysql://localhost:3306/benchmark
spring.datasource.username = root
spring.datasource.password =root
spring.datasource.testWhileIdle = true
spring.datasource.validationQuery = SELECT 1
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
# ===============================
# = JPA / HIBERNATE
# ===============================
spring.jpa.show-sql = false
spring.jpa.hibernate.ddl-auto = update
spring.jpa.hibernate.naming-strategy = org.hibernate.cfg.ImprovedNamingStrategy
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect

的build.gradle：

plugins {
  id "org.springframework.boot" version "1.5.6.RELEASE"
}

dependencies {
    compile group: 'org.springframework.boot', name: 'spring-boot-starter-data-jpa', version:'1.5.6.RELEASE'
    compile(group: 'org.springframework.boot', name: 'spring-boot-starter-websocket', version:'1.5.6.RELEASE') {
exclude(module: 'spring-boot-starter-tomcat')
    }
    compile group: 'org.springframework.boot', name: 'spring-boot-starter-jetty', version:'1.5.6.RELEASE'
    compile group: 'org.springframework.boot', name: 'spring-boot-starter-jdbc', version:'1.5.6.RELEASE'
    compile group: 'org.springframework.boot', name: 'spring-boot-starter-actuator', version: '1.5.6.RELEASE'
    compile group: 'mysql', name: 'mysql-connector-java', version:'5.1.6'

    compile group: 'com.google.code.gson', name: 'gson', version:'2.8.1'
    compile(group: 'org.springframework', name: 'spring-core', version:'4.3.11.RELEASE') {
exclude(module: 'commons-logging')
    }
    compile group: 'org.springframework', name: 'spring-jdbc', version:'4.3.8.RELEASE'
    compile group: 'javax.interceptor', name: 'javax.interceptor-api', version:'1.+'
    testCompile group: 'junit', name: 'junit', version:'4.11'
}

这是错误。当我试图在日食中发射时：

12:40:08.155:WARN [main]: o.s.b.c.e.AnnotationConfigEmbeddedWebApplicationContext -
                Exception encountered during context initialization - cancelling refresh attempt: org.springframework.context.ApplicationContextException: Unable to start embedded container; nested exception is java.lang.NoSuchMethodError: javax.servlet.ServletContext.addServlet(Ljava/lang/String;Ljavax/servlet/Servlet;)Ljavax/servlet/ServletRegistration$Dynamic;
12:40:08.164:INFO [main]: o.s.b.a.l.AutoConfigurationReportLoggingInitializer -


Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
12:40:08.169:ERROR[main]: o.s.boot.SpringApplication -
                Application startup failed
org.springframework.context.ApplicationContextException: Unable to start embedded container; nested exception is java.lang.NoSuchMethodError: javax.servlet.ServletContext.addServlet(Ljava/lang/String;Ljavax/servlet/Servlet;)Ljavax/servlet/ServletRegistration$Dynamic;
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:137)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:537)
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:693)
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:360)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:303)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1118)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1107)
    at com.my.package.Application.main(Application.java:26)
Caused by: java.lang.NoSuchMethodError: javax.servlet.ServletContext.addServlet(Ljava/lang/String;Ljavax/servlet/Servlet;)Ljavax/servlet/ServletRegistration$Dynamic;
    at org.springframework.boot.web.servlet.ServletRegistrationBean.onStartup(ServletRegistrationBean.java:191)
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.selfInitialize(EmbeddedWebApplicationContext.java:229)
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.access$000(EmbeddedWebApplicationContext.java:89)
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext$1.onStartup(EmbeddedWebApplicationContext.java:213)
    at org.springframework.boot.context.embedded.jetty.ServletContextInitializerConfiguration$Initializer.callInitializers(ServletContextInitializerConfiguration.java:83)
    at org.springframework.boot.context.embedded.jetty.ServletContextInitializerConfiguration$Initializer.doStart(ServletContextInitializerConfiguration.java:72)
    at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
    at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:131)
    at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:105)
    at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:113)
    at org.eclipse.jetty.server.handler.ScopedHandler.doStart(ScopedHandler.java:120)
    at org.eclipse.jetty.server.handler.ContextHandler.startContext(ContextHandler.java:844)
    at org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:344)
    at org.eclipse.jetty.webapp.WebAppContext.startWebapp(WebAppContext.java:1501)
    at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1463)
    at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:785)
    at org.eclipse.jetty.servlet.ServletContextHandler.doStart(ServletContextHandler.java:261)
    at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:545)
    at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
    at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:131)
    at org.eclipse.jetty.server.Server.start(Server.java:452)
    at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:105)
    at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:113)
    at org.eclipse.jetty.server.Server.doStart(Server.java:419)
    at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
    at org.springframework.boot.context.embedded.jetty.JettyEmbeddedServletContainer.initialize(JettyEmbeddedServletContainer.java:104)
    at org.springframework.boot.context.embedded.jetty.JettyEmbeddedServletContainer.<init>(JettyEmbeddedServletContainer.java:82)
    at org.springframework.boot.context.embedded.jetty.JettyEmbeddedServletContainerFactory.getJettyEmbeddedServletContainer(JettyEmbeddedServletContainerFactory.java:561)
    at org.springframework.boot.context.embedded.jetty.JettyEmbeddedServletContainerFactory.getEmbeddedServletContainer(JettyEmbeddedServletContainerFactory.java:190)
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.createEmbeddedServletContainer(EmbeddedWebApplicationContext.java:164)
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:134)
    ... 8 common frames omitted

当我运行jar：

12:43:24.707:DEBUG[main]: o.s.b.d.LoggingFailureAnalysisReporter -
                                Application failed to start due to an exception
org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'javax.sql.DataSource' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {}
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1493)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1104)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1066)
        at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:835)
        at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:741)
        at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:189)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1193)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1095)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
        at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:372)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1173)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1067)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
        at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1078)
        at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:857)
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543)
        at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122)
        at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:693)
        at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:360)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:303)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1118)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1107)
        at com.my.package.Application.main(Application.java:26)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48)
        at org.springframework.boot.loader.Launcher.launch(Launcher.java:87)
        at org.springframework.boot.loader.Launcher.launch(Launcher.java:50)
        at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:51)
12:43:24.707:ERROR[main]: o.s.b.d.LoggingFailureAnalysisReporter -


***************************
APPLICATION FAILED TO START
***************************

Description:

Parameter 0 of constructor in org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration required a bean of type 'javax.sql.DataSource' that could not be found.
        - Bean method 'dataSource' not loaded because @ConditionalOnProperty (spring.datasource.jndi-name) did not find property 'jndi-name'
        - Bean method 'dataSource' not loaded because @ConditionalOnBean (types: org.springframework.boot.jta.XADataSourceWrapper; SearchStrategy: all) did not find any beans

我尝试使用application.java中的注释来使用依赖项，但是无法运行它。我当时正在考虑这个问题，但是我不确定在哪里看（我之前没有重新安装Gradle到3.5版本。）

2 个答案:

答案 0 :(得分：0)

Spring Autowired类中的Spring bean不能是Application。您应该将其移至服务/控制器等组件。

答案 1 :(得分：0)

由Spring Boot auto configuration for datasource解决的问题。我仍然不知道为什么dataSource不能自动装配，但这种方式甚至更好，因为使用来自链接的方法我可以从属性获取值并使用不同的环境切换它们。谢谢大家的帮助。

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