错误：在Postman中连接ECONNREFUSED 127.0.0.1:8080

问题描述 投票：0回答：1

在邮递员中测试一个基本项目，但得到

“错误：连接 ECONNREFUSED 127.0.0.1:8080”。

我正在通过表单数据中的邮递员上传多部分文件中的图像以及 JSON 对象。

下面是我的application.properties代码。

spring.application.name=products-desc

# DataSource Configuration
spring.datasource.url=jdbc:mysql://localhost:3306/product
spring.datasource.username=root
spring.datasource.password=root


# JPA / Hibernate Configuration
spring.jpa.hibernate.ddl-auto=update
spring.jpa.show-sql=true


# File Upload Configuration
# Adjust the following properties according to your file upload requirements
# Maximum allowed size of a single file in bytes
spring.servlet.multipart.max-file-size=10MB
# Maximum allowed size of the entire multipart request in bytes
spring.servlet.multipart.max-request-size=10MB
# Temporary directory used to store uploaded files
spring.servlet.multipart.location=uploads

server.port=8080

下面是 Intellij 的运行

"C:\Program Files\Java\jdk-17\bin\java.exe" -ea -Didea.test.cyclic.buffer.size=1048576 "-javaagent:C:\Program Files\JetBrains\IntelliJ IDEA 2024.1.1\lib\idea_rt.jar=50703:C:\Program Files\JetBrains\IntelliJ IDEA 2024.1.1\bin" -Dfile.encoding=UTF-8 -classpath "C:\Users\ASUS\.m2\repository\org\junit\platform\junit-platform-launcher\1.10.2\junit-platform-launcher-1.10.2.jar;C:\Program Files\JetBrains\IntelliJ IDEA 2024.1.1\lib\idea_rt.jar;C:\Program Files\JetBrains\IntelliJ IDEA 2024.1.1\plugins\junit\lib\junit5-rt.jar;C:\Program Files\JetBrains\IntelliJ IDEA 2024.1.1\plugins\junit\lib\junit-rt.jar;C:\Users\ASUS\Documents\workspace-intellij-idea\products-desc\target\test-classes;C:\Users\ASUS\Documents\workspace-intellij-idea\products-desc\target\classes;C:\Users\ASUS\.m2\repository\org\springframework\boot\spring-boot-starter-data-jpa\3.2.5\spring-boot-starter-data-jpa-3.2.5.jar;C:\Users\ASUS\.m2\repository\org\springframework\boot\spring-boot-starter-aop\3.2.5\spring-boot-starter-aop-3.2.5.jar;C:\Users\ASUS\.m2\repository\org\springframework\spring-aop\6.1.6\spring-aop-6.1.6.jar;C:\Users\ASUS\.m2\repository\org\aspectj\aspectjweaver\1.9.22\aspectjweaver-1.9.22.jar;C:\Users\ASUS\.m2\repository\org\springframework\boot\spring-boot-starter-jdbc\3.2.5\spring-boot-starter-jdbc-3.2.5.jar;C:\Users\ASUS\.m2\repository\com\zaxxer\HikariCP\5.0.1\HikariCP-5.0.1.jar;C:\Users\ASUS\.m2\repository\org\springframework\spring-jdbc\6.1.6\spring-jdbc-6.1.6.jar;C:\Users\ASUS\.m2\repository\org\hibernate\orm\hibernate-core\6.4.4.Final\hibernate-core-6.4.4.Final.jar;C:\Users\ASUS\.m2\repository\jakarta\persistence\jakarta.persistence-api\3.1.0\jakarta.persistence-api-3.1.0.jar;C:\Users\ASUS\.m2\repository\jakarta\transaction\jakarta.transaction-api\2.0.1\jakarta.transaction-api-2.0.1.jar;C:\Users\ASUS\.m2\repository\org\jboss\logging\jboss-logging\3.5.3.Final\jboss-logging-3.5.3.Final.jar;C:\Users\ASUS\.m2\repository\org\hibernate\common\hibernate-commons-annotations\6.0.6.Final\hibernate-commons-annotations-6.0.6.Final.jar;C:\Users\ASUS\.m2\repository\io\smallrye\jandex\3.1.2\jandex-3.1.2.jar;C:\Users\ASUS\.m2\repository\com\fasterxml\classmate\1.6.0\classmate-1.6.0.jar;C:\Users\ASUS\.m2\repository\net\bytebuddy\byte-buddy\1.14.13\byte-buddy-1.14.13.jar;C:\Users\ASUS\.m2\repository\org\glassfish\jaxb\jaxb-runtime\4.0.5\jaxb-runtime-4.0.5.jar;C:\Users\ASUS\.m2\repository\org\glassfish\jaxb\jaxb-core\4.0.5\jaxb-core-4.0.5.jar;C:\Users\ASUS\.m2\repository\org\eclipse\angus\angus-activation\2.0.2\angus-activation-2.0.2.jar;C:\Users\ASUS\.m2\repository\org\glassfish\jaxb\txw2\4.0.5\txw2-4.0.5.jar;C:\Users\ASUS\.m2\repository\com\sun\istack\istack-commons-runtime\4.1.2\istack-commons-runtime-4.1.2.jar;C:\Users\ASUS\.m2\repository\jakarta\inject\jakarta.inject-api\2.0.1\jakarta.inject-api-2.0.1.jar;C:\Users\ASUS\.m2\repository\org\antlr\antlr4-runtime\4.13.0\antlr4-runtime-4.13.0.jar;C:\Users\ASUS\.m2\repository\org\springframework\data\spring-data-jpa\3.2.5\spring-data-jpa-3.2.5.jar;C:\Users\ASUS\.m2\repository\org\springframework\data\spring-data-commons\3.2.5\spring-data-commons-3.2.5.jar;C:\Users\ASUS\.m2\repository\org\springframework\spring-orm\6.1.6\spring-orm-6.1.6.jar;C:\Users\ASUS\.m2\repository\org\springframework\spring-context\6.1.6\spring-context-6.1.6.jar;C:\Users\ASUS\.m2\repository\org\springframework\spring-tx\6.1.6\spring-tx-6.1.6.jar;C:\Users\ASUS\.m2\repository\org\springframework\spring-beans\6.1.6\spring-beans-6.1.6.jar;C:\Users\ASUS\.m2\repository\jakarta\annotation\jakarta.annotation-api\2.1.1\jakarta.annotation-api-2.1.1.jar;C:\Users\ASUS\.m2\repository\org\slf4j\slf4j-api\2.0.13\slf4j-api-2.0.13.jar;C:\Users\ASUS\.m2\repository\org\springframework\spring-aspects\6.1.6\spring-aspects-6.1.6.jar;C:\Users\ASUS\.m2\repository\org\springframework\boot\spring-boot-starter-validation\3.2.5\spring-boot-starter-validation-3.2.5.jar;C:\Users\ASUS\.m2\repository\org\springframework\boot\spring-boot-starter\3.2.5\spring-boot-starter-3.2.5.jar;C:\Users\ASUS\.m2\repository\org\springframework\boot\spring-boot-starter-logging\3.2.5\spring-boot-starter-logging-3.2.5.jar;C:\Users\ASUS\.m2\repository\ch\qos\logback\logback-classic\1.4.14\logback-classic-1.4.14.jar;C:\Users\ASUS\.m2\repository\ch\qos\logback\logback-core\1.4.14\logback-core-1.4.14.jar;C:\Users\ASUS\.m2\repository\org\apache\logging\log4j\log4j-to-slf4j\2.21.1\log4j-to-slf4j-2.21.1.jar;C:\Users\ASUS\.m2\repository\org\apache\logging\log4j\log4j-api\2.21.1\log4j-api-2.21.1.jar;C:\Users\ASUS\.m2\repository\org\slf4j\jul-to-slf4j\2.0.13\jul-to-slf4j-2.0.13.jar;C:\Users\ASUS\.m2\repository\org\yaml\snakeyaml\2.2\snakeyaml-2.2.jar;C:\Users\ASUS\.m2\repository\org\apache\tomcat\embed\tomcat-embed-el\10.1.20\tomcat-embed-el-10.1.20.jar;C:\Users\ASUS\.m2\repository\org\hibernate\validator\hibernate-validator\8.0.1.Final\hibernate-validator-8.0.1.Final.jar;C:\Users\ASUS\.m2\repository\jakarta\validation\jakarta.validation-api\3.0.2\jakarta.validation-api-3.0.2.jar;C:\Users\ASUS\.m2\repository\org\springframework\boot\spring-boot-starter-web\3.2.5\spring-boot-starter-web-3.2.5.jar;C:\Users\ASUS\.m2\repository\org\springframework\boot\spring-boot-starter-json\3.2.5\spring-boot-starter-json-3.2.5.jar;C:\Users\ASUS\.m2\repository\com\fasterxml\jackson\core\jackson-databind\2.15.4\jackson-databind-2.15.4.jar;C:\Users\ASUS\.m2\repository\com\fasterxml\jackson\core\jackson-annotations\2.15.4\jackson-annotations-2.15.4.jar;C:\Users\ASUS\.m2\repository\com\fasterxml\jackson\core\jackson-core\2.15.4\jackson-core-2.15.4.jar;C:\Users\ASUS\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jdk8\2.15.4\jackson-datatype-jdk8-2.15.4.jar;C:\Users\ASUS\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jsr310\2.15.4\jackson-datatype-jsr310-2.15.4.jar;C:\Users\ASUS\.m2\repository\com\fasterxml\jackson\module\jackson-module-parameter-names\2.15.4\jackson-module-parameter-names-2.15.4.jar;C:\Users\ASUS\.m2\repository\org\springframework\boot\spring-boot-starter-tomcat\3.2.5\spring-boot-starter-tomcat-3.2.5.jar;C:\Users\ASUS\.m2\repository\org\apache\tomcat\embed\tomcat-embed-core\10.1.20\tomcat-embed-core-10.1.20.jar;C:\Users\ASUS\.m2\repository\org\apache\tomcat\embed\tomcat-embed-websocket\10.1.20\tomcat-embed-websocket-10.1.20.jar;C:\Users\ASUS\.m2\repository\org\springframework\spring-web\6.1.6\spring-web-6.1.6.jar;C:\Users\ASUS\.m2\repository\io\micrometer\micrometer-observation\1.12.5\micrometer-observation-1.12.5.jar;C:\Users\ASUS\.m2\repository\io\micrometer\micrometer-commons\1.12.5\micrometer-commons-1.12.5.jar;C:\Users\ASUS\.m2\repository\org\springframework\spring-webmvc\6.1.6\spring-webmvc-6.1.6.jar;C:\Users\ASUS\.m2\repository\org\springframework\spring-expression\6.1.6\spring-expression-6.1.6.jar;C:\Users\ASUS\.m2\repository\org\springframework\boot\spring-boot-devtools\3.2.5\spring-boot-devtools-3.2.5.jar;C:\Users\ASUS\.m2\repository\org\springframework\boot\spring-boot\3.2.5\spring-boot-3.2.5.jar;C:\Users\ASUS\.m2\repository\org\springframework\boot\spring-boot-autoconfigure\3.2.5\spring-boot-autoconfigure-3.2.5.jar;C:\Users\ASUS\.m2\repository\com\mysql\mysql-connector-j\8.3.0\mysql-connector-j-8.3.0.jar;C:\Users\ASUS\.m2\repository\org\springframework\boot\spring-boot-starter-test\3.2.5\spring-boot-starter-test-3.2.5.jar;C:\Users\ASUS\.m2\repository\org\springframework\boot\spring-boot-test\3.2.5\spring-boot-test-3.2.5.jar;C:\Users\ASUS\.m2\repository\org\springframework\boot\spring-boot-test-autoconfigure\3.2.5\spring-boot-test-autoconfigure-3.2.5.jar;C:\Users\ASUS\.m2\repository\com\jayway\jsonpath\json-path\2.9.0\json-path-2.9.0.jar;C:\Users\ASUS\.m2\repository\jakarta\xml\bind\jakarta.xml.bind-api\4.0.2\jakarta.xml.bind-api-4.0.2.jar;C:\Users\ASUS\.m2\repository\jakarta\activation\jakarta.activation-api\2.1.3\jakarta.activation-api-2.1.3.jar;C:\Users\ASUS\.m2\repository\net\minidev\json-smart\2.5.1\json-smart-2.5.1.jar;C:\Users\ASUS\.m2\repository\net\minidev\accessors-smart\2.5.1\accessors-smart-2.5.1.jar;C:\Users\ASUS\.m2\repository\org\ow2\asm\asm\9.6\asm-9.6.jar;C:\Users\ASUS\.m2\repository\org\assertj\assertj-core\3.24.2\assertj-core-3.24.2.jar;C:\Users\ASUS\.m2\repository\org\awaitility\awaitility\4.2.1\awaitility-4.2.1.jar;C:\Users\ASUS\.m2\repository\org\hamcrest\hamcrest\2.2\hamcrest-2.2.jar;C:\Users\ASUS\.m2\repository\org\junit\jupiter\junit-jupiter\5.10.2\junit-jupiter-5.10.2.jar;C:\Users\ASUS\.m2\repository\org\junit\jupiter\junit-jupiter-api\5.10.2\junit-jupiter-api-5.10.2.jar;C:\Users\ASUS\.m2\repository\org\opentest4j\opentest4j\1.3.0\opentest4j-1.3.0.jar;C:\Users\ASUS\.m2\repository\org\junit\platform\junit-platform-commons\1.10.2\junit-platform-commons-1.10.2.jar;C:\Users\ASUS\.m2\repository\org\apiguardian\apiguardian-api\1.1.2\apiguardian-api-1.1.2.jar;C:\Users\ASUS\.m2\repository\org\junit\jupiter\junit-jupiter-params\5.10.2\junit-jupiter-params-5.10.2.jar;C:\Users\ASUS\.m2\repository\org\junit\jupiter\junit-jupiter-engine\5.10.2\junit-jupiter-engine-5.10.2.jar;C:\Users\ASUS\.m2\repository\org\junit\platform\junit-platform-engine\1.10.2\junit-platform-engine-1.10.2.jar;C:\Users\ASUS\.m2\repository\org\mockito\mockito-core\5.7.0\mockito-core-5.7.0.jar;C:\Users\ASUS\.m2\repository\net\bytebuddy\byte-buddy-agent\1.14.13\byte-buddy-agent-1.14.13.jar;C:\Users\ASUS\.m2\repository\org\objenesis\objenesis\3.3\objenesis-3.3.jar;C:\Users\ASUS\.m2\repository\org\mockito\mockito-junit-jupiter\5.7.0\mockito-junit-jupiter-5.7.0.jar;C:\Users\ASUS\.m2\repository\org\skyscreamer\jsonassert\1.5.1\jsonassert-1.5.1.jar;C:\Users\ASUS\.m2\repository\com\vaadin\external\google\android-json\0.0.20131108.vaadin1\android-json-0.0.20131108.vaadin1.jar;C:\Users\ASUS\.m2\repository\org\springframework\spring-core\6.1.6\spring-core-6.1.6.jar;C:\Users\ASUS\.m2\repository\org\springframework\spring-jcl\6.1.6\spring-jcl-6.1.6.jar;C:\Users\ASUS\.m2\repository\org\springframework\spring-test\6.1.6\spring-test-6.1.6.jar;C:\Users\ASUS\.m2\repository\org\xmlunit\xmlunit-core\2.9.1\xmlunit-core-2.9.1.jar;C:\Users\ASUS\.m2\repository\org\projectlombok\lombok\1.18.32\lombok-1.18.32.jar" com.intellij.rt.junit.JUnitStarter -ideVersion5 -junit5 @w@C:\Users\ASUS\AppData\Local\Temp\idea_working_dirs_junit.tmp @C:\Users\ASUS\AppData\Local\Temp\idea_junit.tmp -socket50702
18:16:07.933 [main] INFO org.springframework.test.context.support.AnnotationConfigContextLoaderUtils -- Could not detect default configuration classes for test class [com.smart.application.ProductsDescApplicationTests]: ProductsDescApplicationTests does not declare any static, non-private, non-final, nested classes annotated with @Configuration.
18:16:08.238 [main] INFO org.springframework.boot.test.context.SpringBootTestContextBootstrapper -- Found @SpringBootConfiguration com.smart.application.ProductsDescApplication for test class com.smart.application.ProductsDescApplicationTests
18:16:08.643 [main] INFO org.springframework.boot.devtools.restart.RestartApplicationListener -- Restart disabled due to context in which it is running

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::                (v3.2.5)

2024-05-07T18:16:09.300+05:30  INFO 7416 --- [products-desc] [           main] c.s.a.ProductsDescApplicationTests       : Starting ProductsDescApplicationTests using Java 17.0.9 with PID 7416 (started by ASUS in C:\Users\ASUS\Documents\workspace-intellij-idea\products-desc)
2024-05-07T18:16:09.303+05:30  INFO 7416 --- [products-desc] [           main] c.s.a.ProductsDescApplicationTests       : No active profile set, falling back to 1 default profile: "default"
2024-05-07T18:16:10.679+05:30  INFO 7416 --- [products-desc] [           main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode.
2024-05-07T18:16:10.732+05:30  INFO 7416 --- [products-desc] [           main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 37 ms. Found 0 JPA repository interfaces.
2024-05-07T18:16:11.828+05:30  INFO 7416 --- [products-desc] [           main] o.hibernate.jpa.internal.util.LogHelper  : HHH000204: Processing PersistenceUnitInfo [name: default]
2024-05-07T18:16:12.021+05:30  INFO 7416 --- [products-desc] [           main] org.hibernate.Version                    : HHH000412: Hibernate ORM core version 6.4.4.Final
2024-05-07T18:16:12.101+05:30  INFO 7416 --- [products-desc] [           main] o.h.c.internal.RegionFactoryInitiator    : HHH000026: Second-level cache disabled
2024-05-07T18:16:12.672+05:30  INFO 7416 --- [products-desc] [           main] o.s.o.j.p.SpringPersistenceUnitInfo      : No LoadTimeWeaver setup: ignoring JPA class transformer
2024-05-07T18:16:12.737+05:30  INFO 7416 --- [products-desc] [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Starting...
2024-05-07T18:16:13.531+05:30  INFO 7416 --- [products-desc] [           main] com.zaxxer.hikari.pool.HikariPool        : HikariPool-1 - Added connection com.mysql.cj.jdbc.ConnectionImpl@510da778
2024-05-07T18:16:13.535+05:30  INFO 7416 --- [products-desc] [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Start completed.
2024-05-07T18:16:15.192+05:30  INFO 7416 --- [products-desc] [           main] o.h.e.t.j.p.i.JtaPlatformInitiator       : HHH000489: No JTA platform available (set 'hibernate.transaction.jta.platform' to enable JTA platform integration)
2024-05-07T18:16:15.204+05:30  INFO 7416 --- [products-desc] [           main] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default'
2024-05-07T18:16:15.668+05:30  WARN 7416 --- [products-desc] [           main] JpaBaseConfiguration$JpaWebConfiguration : spring.jpa.open-in-view is enabled by default. Therefore, database queries may be performed during view rendering. Explicitly configure spring.jpa.open-in-view to disable this warning
2024-05-07T18:16:16.948+05:30  INFO 7416 --- [products-desc] [           main] c.s.a.ProductsDescApplicationTests       : Started ProductsDescApplicationTests in 8.311 seconds (process running for 11.198)
Java HotSpot(TM) 64-Bit Server VM warning: Sharing is only supported for boot loader classes because bootstrap classpath has been appended
2024-05-07T18:16:18.839+05:30  INFO 7416 --- [products-desc] [ionShutdownHook] j.LocalContainerEntityManagerFactoryBean : Closing JPA EntityManagerFactory for persistence unit 'default'
2024-05-07T18:16:18.844+05:30  INFO 7416 --- [products-desc] [ionShutdownHook] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Shutdown initiated...
2024-05-07T18:16:18.865+05:30  INFO 7416 --- [products-desc] [ionShutdownHook] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Shutdown completed.

Process finished with exit code 0

我认为错误可能出现在本地主机服务器中，

  1. 尝试重新安装邮递员，
  2. 尝试使用邮递员网络，
  3. 关闭防御者防火墙，
  4. 没有 VPN 或代理服务器。也找不到解决方案
  5. 尝试更改端口号但没有用。
  6. 重新检查控制器端点、URI。

下面的 pom.xml 可供参考，其中仅包含基本的入门依赖项：

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>3.2.5</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.smart</groupId>
    <artifactId>products-desc</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>products-desc</name>
    <description>products-desc</description>
    <properties>
        <java.version>17</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-validation</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>com.mysql</groupId>
            <artifactId>mysql-connector-j</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>
spring-boot intellij-idea postman spring-boot-test econnrefused
1个回答
0
投票

第一个错误确实与您的应用程序未运行有关。

第二个错误与您没有调用正确的 URL 或没有按照 URL 期望的方式调用它有关。因此，当您调用 

api/product
时，它是无法访问的。

为了进一步调试这个问题，如果您可以共享您的控制器代码和用于调用它的方法（也许您使用的是 GET 而不是 POST，反之亦然），以及其他一些代码（安全、配置等）

P.S.：您可以做的另一件事是在同一个控制器类中创建一个非常简单的端点，比方说一个 

alive
端点，它只返回一个简单的 JSON 或字符串并显示应用程序正在运行（或者您可以启用执行器对于这个问题）。在这种情况下，您可以验证至少您的 Spring Security 和其他配置以及您的控制器 bean 是否处于活动状态，并且您只是以错误的方式调用其他端点。

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