Heroku Postgres：关系不存在

时间：2018-06-22 18:47:50

标签： java spring postgresql hibernate jpa

我已经通过TDD创建了一个Java Spring网站。最初，它只需要Spring Boot附带的嵌入式h2数据库。我最终意识到，由于我是在不支持h2的Heroku上托管的，因此我必须进行切换，因此我选择了postgres。由于我已经添加了postgres作为依赖项，并且切换到使用Heroku的环境变量作为数据源，所以我的网站无法启动。棘手的部分是我的所有测试仍然通过，因为我仍在使用h2进行测试，并且仅在生产中使用postgres。这是部署网站时在Heroku日志中看到的堆栈跟踪。

State changed from starting to up
2018-06-22 18:28:08.543  INFO 4 --- [           main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 58859 (http)
2018-06-22 18:28:09.341  WARN 4 --- [           main] o.h.engine.jdbc.spi.SqlExceptionHelper   : SQL Error: 0, SQLState: 42P01
2018-06-22 18:28:09.368 ERROR 4 --- [           main] o.h.engine.jdbc.spi.SqlExceptionHelper   : ERROR: relation "category" does not exist Position: 13
2018-06-22 18:28:09.502  INFO 4 --- [           main] utoConfigurationReportLoggingInitializer : 

Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
2018-06-22 18:28:09.599 ERROR 4 --- [           main] o.s.boot.SpringApplication               : Application startup failed

java.lang.IllegalStateException: Failed to execute CommandLineRunner
    at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:735) [spring-boot-1.5.10.RELEASE.jar!/:1.5.10.RELEASE]
    at org.springframework.boot.SpringApplication.callRunners(SpringApplication.java:716) [spring-boot-1.5.10.RELEASE.jar!/:1.5.10.RELEASE]
    at org.springframework.boot.SpringApplication.afterRefresh(SpringApplication.java:703) [spring-boot-1.5.10.RELEASE.jar!/:1.5.10.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:304) [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 org.wecancodeit.pantryplus.PantryplusApplication.main(PantryplusApplication.java:10) [classes!/:na]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_171-heroku]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_171-heroku]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_171-heroku]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_171-heroku]
    at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48) [pantryplus-0.0.1-SNAPSHOT.jar:na]
    at org.springframework.boot.loader.Launcher.launch(Launcher.java:87) [pantryplus-0.0.1-SNAPSHOT.jar:na]
    at org.springframework.boot.loader.Launcher.launch(Launcher.java:50) [pantryplus-0.0.1-SNAPSHOT.jar:na]
    at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:51) [pantryplus-0.0.1-SNAPSHOT.jar:na]
Caused by: org.springframework.dao.InvalidDataAccessResourceUsageException: could not execute statement; SQL [n/a]; nested exception is org.hibernate.exception.SQLGrammarException: could not execute statement
    at org.springframework.orm.jpa.vendor.HibernateJpaDialect.convertHibernateAccessException(HibernateJpaDialect.java:261) ~[spring-orm-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
    at org.springframework.orm.jpa.vendor.HibernateJpaDialect.translateExceptionIfPossible(HibernateJpaDialect.java:244) ~[spring-orm-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.translateExceptionIfPossible(AbstractEntityManagerFactoryBean.java:503) ~[spring-orm-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
    at org.springframework.dao.support.ChainedPersistenceExceptionTranslator.translateExceptionIfPossible(ChainedPersistenceExceptionTranslator.java:59) ~[spring-tx-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
    at org.springframework.dao.support.DataAccessUtils.translateIfNecessary(DataAccessUtils.java:209) ~[spring-tx-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
    at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:147) ~[spring-tx-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
    at org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor$CrudMethodMetadataPopulatingMethodInterceptor.invoke(CrudMethodMetadataPostProcessor.java:133) ~[spring-data-jpa-1.11.10.RELEASE.jar!/:na]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
    at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92) ~[spring-aop-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
    at org.springframework.data.repository.core.support.SurroundingTransactionDetectorMethodInterceptor.invoke(SurroundingTransactionDetectorMethodInterceptor.java:57) ~[spring-data-commons-1.13.10.RELEASE.jar!/:na]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213) ~[spring-aop-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
    at com.sun.proxy.$Proxy88.save(Unknown Source) ~[na:na]
    at org.wecancodeit.pantryplus.ProductPopulator.run(ProductPopulator.java:26) ~[classes!/:na]
    at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:732) [spring-boot-1.5.10.RELEASE.jar!/:1.5.10.RELEASE]
    ... 14 common frames omitted
Caused by: org.hibernate.exception.SQLGrammarException: could not execute statement
    at org.hibernate.exception.internal.SQLStateConversionDelegate.convert(SQLStateConversionDelegate.java:106) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
    at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:42) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
    at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:109) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
    at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:95) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
    at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:207) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
    at org.hibernate.dialect.identity.GetGeneratedKeysDelegate.executeAndExtract(GetGeneratedKeysDelegate.java:57) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
    at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:42) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
    at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2855) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
    at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3426) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
    at org.hibernate.action.internal.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:81) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
    at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:619) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
    at org.hibernate.engine.spi.ActionQueue.addResolvedEntityInsertAction(ActionQueue.java:273) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
    at org.hibernate.engine.spi.ActionQueue.addInsertAction(ActionQueue.java:254) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
    at org.hibernate.engine.spi.ActionQueue.addAction(ActionQueue.java:299) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
    at org.hibernate.event.internal.AbstractSaveEventListener.addInsertAction(AbstractSaveEventListener.java:317) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
    at org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:272) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
    at org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:178) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
    at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:109) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
    at org.hibernate.jpa.event.internal.core.JpaPersistEventListener.saveWithGeneratedId(JpaPersistEventListener.java:67) ~[hibernate-entitymanager-5.0.12.Final.jar!/:5.0.12.Final]
    at org.hibernate.event.internal.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:189) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
    at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:132) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
    at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:58) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
    at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:775) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
    at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:748) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
    at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:753) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
    at org.hibernate.jpa.spi.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:1146) ~[hibernate-entitymanager-5.0.12.Final.jar!/:5.0.12.Final]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_171-heroku]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_171-heroku]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_171-heroku]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_171-heroku]
    at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:298) ~[spring-orm-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
    at com.sun.proxy.$Proxy82.persist(Unknown Source) ~[na:na]
    at org.springframework.data.jpa.repository.support.SimpleJpaRepository.save(SimpleJpaRepository.java:508) ~[spring-data-jpa-1.11.10.RELEASE.jar!/:na]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_171-heroku]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_171-heroku]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_171-heroku]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_171-heroku]
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.executeMethodOn(RepositoryFactorySupport.java:513) ~[spring-data-commons-1.13.10.RELEASE.jar!/:na]
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.doInvoke(RepositoryFactorySupport.java:498) ~[spring-data-commons-1.13.10.RELEASE.jar!/:na]
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:475) ~[spring-data-commons-1.13.10.RELEASE.jar!/:na]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
    at org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.invoke(DefaultMethodInvokingMethodInterceptor.java:56) ~[spring-data-commons-1.13.10.RELEASE.jar!/:na]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
    at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99) ~[spring-tx-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
    at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:282) ~[spring-tx-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96) ~[spring-tx-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
    at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:136) ~[spring-tx-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
    ... 25 common frames omitted
Caused by: org.postgresql.util.PSQLException: ERROR: relation "category" does not exist Position: 13
    at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2455) ~[postgresql-9.4.1212.jre7.jar!/:9.4.1212.jre7]
    at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:2155) ~[postgresql-9.4.1212.jre7.jar!/:9.4.1212.jre7]
    at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:288) ~[postgresql-9.4.1212.jre7.jar!/:9.4.1212.jre7]
    at org.postgresql.jdbc.PgStatement.executeInternal(PgStatement.java:430) ~[postgresql-9.4.1212.jre7.jar!/:9.4.1212.jre7]
    at org.postgresql.jdbc.PgStatement.execute(PgStatement.java:356) ~[postgresql-9.4.1212.jre7.jar!/:9.4.1212.jre7]
    at org.postgresql.jdbc.PgPreparedStatement.executeWithFlags(PgPreparedStatement.java:168) ~[postgresql-9.4.1212.jre7.jar!/:9.4.1212.jre7]
    at org.postgresql.jdbc.PgPreparedStatement.executeUpdate(PgPreparedStatement.java:135) ~[postgresql-9.4.1212.jre7.jar!/:9.4.1212.jre7]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_171-heroku]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_171-heroku]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_171-heroku]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_171-heroku]
    at org.apache.tomcat.jdbc.pool.StatementFacade$StatementProxy.invoke(StatementFacade.java:114) ~[tomcat-jdbc-8.5.27.jar!/:na]
    at com.sun.proxy.$Proxy98.executeUpdate(Unknown Source) ~[na:na]
    at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:204) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
    ... 68 common frames omitted

2018-06-22 18:28:09.612  INFO 4 --- [           main] ationConfigEmbeddedWebApplicationContext : Closing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@5cb0d902: startup date [Fri Jun 22 18:27:14 UTC 2018]; root of context hierarchy
2018-06-22 18:28:09.663  INFO 4 --- [           main] o.s.j.e.a.AnnotationMBeanExporter        : Unregistering JMX-exposed beans on shutdown
2018-06-22 18:28:09.690  INFO 4 --- [           main] j.LocalContainerEntityManagerFactoryBean : Closing JPA EntityManagerFactory for persistence unit 'default'
State changed from up to crashed
Process exited with status 1

对不起，如果有人知道时间戳记格式化的服务，可以随意在注释中分享。 stacktrace的开头说ERROR: relation "category" does not exist，这使我相信它与我的Product.java和Category.java类有关，因为它们之间具有@ManyToOne和@OneToMany(mappedBy = "category")的关系

Category.java 

package org.wecancodeit.pantryplus.category;

import static java.util.Arrays.asList;
import static javax.persistence.GenerationType.IDENTITY;

import java.util.Collection;
import java.util.HashSet;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.OneToMany;

import org.wecancodeit.pantryplus.product.Product;

@Entity
public class Category {

    @Id
    @GeneratedValue(strategy = IDENTITY)
    private long id;
    private String name;

    @OneToMany(mappedBy = "category")
    private Collection<Product> products;

    @SuppressWarnings("unused")
    private Category() {
    }

    public Category(String name, Product... products) {
        this.name = name;
        this.products = new HashSet<Product>(asList(products));
    }

    public long getId() {
        return id;
    }

    public String getName() {
        return name;
    }

    public Collection<Product> getProducts() {
        return products;
    }
}

Product.java 

package org.wecancodeit.pantryplus.product;

import static javax.persistence.GenerationType.IDENTITY;

import java.util.Collection;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.ManyToOne;
import javax.persistence.OneToMany;

import org.wecancodeit.pantryplus.category.Category;
import org.wecancodeit.pantryplus.lineitem.LineItem;

import com.fasterxml.jackson.annotation.JsonIgnore;

@Entity
public class Product {

    @Id
    @GeneratedValue(strategy = IDENTITY)
    private long id;
    private String name;
    private String image;

    @JsonIgnore
    @ManyToOne
    private Category category;

    @JsonIgnore
    @OneToMany(mappedBy = "product")
    private Collection<LineItem> lineItem;

    public Product() {
    }

    public Product(String name, Category category) {
        this.name = name;
        this.category = category;
    }

    public Product(String name, Category category, String image) {
        this.name = name;
        this.category = category;
        this.image = image;
    }

    public long getId() {
        return id;
    }

    public String getImage() {
        return image;
    }

    public String getName() {
        return name;
    }

    @Override
    public int hashCode() {
        return ((Long) id).hashCode();
    }

    @Override
    public boolean equals(Object obj) {
        if (obj == null) {
            return false;
        }

        if (getClass() != obj.getClass()) {
            return false;
        }

        if (id == ((Product) obj).id) {
            return true;
        }

        return false;
    }

    public Category getCategory() {
        return category;
    }

}

build.gradle 

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

plugins {
    id 'net.saliman.cobertura' version '2.3.1'
    id 'com.github.kt3k.coveralls' version '2.8.2'
    id 'com.craigburke.karma' version '1.4.4'
}

cobertura.coverageFormats = ['html', 'xml']

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

karma {
    frameworks = ['jasmine']
    browsers = [
        'Chrome'
    ]
    files = [
        "src/test/js/*spec.js",
        "src/main/resources/static/js/*.js"
    ]
}

group = 'org.wecancodeit'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = 1.8

repositories {
    mavenCentral()
}

test {
    environment "JDBC_DATABASE_URL", "" //I don't know how this empty quote is working but it works just as well as 'jdbc:h2:~/test' for some reason
}

dependencies {
    compile('org.springframework.boot:spring-boot-starter-data-jpa')
    compile('org.springframework.boot:spring-boot-starter-thymeleaf')
    compile('org.springframework.boot:spring-boot-starter-web')
    compile('org.springframework.boot:spring-boot-starter-mail')
    compile('org.springframework.data:spring-data-rest-hal-browser')
    runtime('org.springframework.boot:spring-boot-devtools')
    runtime('org.postgresql:postgresql')
    testCompile('com.h2database:h2')
    testCompile('org.springframework.boot:spring-boot-starter-test')
}

我已经在这个问题上停留了两个星期，甚至在此之后我甚至能够从头开始构建网站，该网站与Hergre上的postgres一起使用，但不是这个。如果这是空白的问题，我不会感到惊讶。

编辑： 这是我的application.properties文件：

spring.datasource.url=${JDBC_DATABASE_URL}
spring.mail.host=smtp.gmail.com
spring.mail.port=587
spring.mail.username=${SPRING_MAIL_USERNAME}
spring.mail.password=${SPRING_MAIL_PASSWORD}
spring.mail.properties.mail.smtp.starttls.enable=true
spring.mail.properties.mail.smtp.starttls.required=true
spring.mail.properties.mail.smtp.auth=true
spring.mail.properties.mail.smtp.connectiontimeout=5000
spring.mail.properties.mail.smtp.timeout=5000
spring.mail.properties.mail.smtp.writetimeout=5000

编辑2： 我已达到字符数限制，因此无法添加完整的Heroku日志，但已将其上传到Google驱动器，网址为：https://drive.google.com/file/d/1668kZuNsDWuiVQMvP4waFBs_sU9xvrWO/view?usp=sharing

2 个答案:

答案 0 :(得分：0)

您是否在属性文件中正确配置了架构？ 根据heroku的文档：

  

注意jdbc：postgresql末尾的其他ql吗？由于这种差异，您将需要在Java类或Spring XML配置中将方案硬编码为jdbc：postgresql。（link）

答案 1 :(得分：0)

我的一个表名是user，这是一个Postgres关键字，在我更改了它并在Spring Boot 2中完全重写了该项目之后，我能够使它工作。以下是postgres关键字的列表：https://www.postgresql.org/docs/current/static/sql-keywords-appendix.html

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