线程“main”java中的amazon web服务异常。lang.NoSuchFieldError:JAVA\u供应商
当我尝试在aws s3创建bucket时,出现以下错误: 线程“main”java中出现异常。lang.NoSuchFieldError:JAVA\u供应商 在软件方面。亚马逊。awssdk。果心内部的util。用户代理tutils。userAgent(UserAgentUtils.java:87) 在软件方面。亚马逊。awssdk。果心内部的util。用户代理tutils。initializeUserAgent(UserAgentUtils.java:73)强>
我有OpenJDK11;java-version命令的结果
openjdk version "11.0.1" 2018-10-16
OpenJDK Runtime Environment 18.9 (build 11.0.1+13)
OpenJDK 64-Bit Server VM 18.9 (build 11.0.1+13, mixed mode)
mvn-version命令的结果:ApacheMaven 3.5.4
这是我的pom文件:
<?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>c</groupId>
<artifactId>e</artifactId>
<version>1.0-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>software.amazon.awssdk</groupId>
<artifactId>s3</artifactId>
<version>2.5.19</version>
</dependency>
<dependency>
<groupId>software.amazon.awssdk</groupId>
<artifactId>regions</artifactId>
<version>2.5.19</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-nop -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-nop</artifactId>
<version>1.7.25</version>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>software.amazon.awssdk</groupId>
<artifactId>bom</artifactId>
<version>2.0.0</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
从aws创建简单的bucket示例:
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.s3.S3Client;
import software.amazon.awssdk.services.s3.model.CreateBucketConfiguration;
import software.amazon.awssdk.services.s3.model.CreateBucketRequest;
public class Main {
public static void main(String[] args) {
System.setProperty("JAVA_VENDOR","Oracle Corporation");
Region region = Region.US_WEST_2;
S3Client s3 = S3Client.builder().region(region).build();
String bucket = "bucket" + System.currentTimeMillis();
CreateBucketRequest createBucketRequest = CreateBucketRequest
.builder()
.bucket(bucket)
.createBucketConfiguration(CreateBucketConfiguration.builder()
.locationConstraint(region.id())
.build())
.build();
s3.createBucket(createBucketRequest);
}
}
我做了一些努力来赢得它:
1) 试试这个:System.setProperty("JAVA_VENDOR","Oracle Corporation");
,
因为real system属性具有nave“java.vendor”
2) 我在at软件中发现了问题。亚马逊。awssdk。果心内部的util。用户代理tutils。userAgent:它从软件中调用JAVA_供应商。亚马逊。awssdk。乌提尔斯。JavaSystemSettings
.replace("{java.vendor}", sanitizeInput(JavaSystemSetting.JAVA_VENDOR.getStringValue().orElse(null)))
但是在JavaSystemSettings类中没有具有这样名称的字段。 我怎么办
TR;DR更新! 它适用于我的下一个maven pom文件:
<?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>c</groupId>
<artifactId>e</artifactId>
<version>1.0-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-nop</artifactId>
<version>1.7.25</version>
</dependency>
<dependency>
<groupId>software.amazon.awssdk</groupId>
<artifactId>sdk-core</artifactId>
<version>2.5.19</version>
</dependency>
<!-- https://mvnrepository.com/artifact/software.amazon.awssdk/s3 -->
<dependency>
<groupId>software.amazon.awssdk</groupId>
<artifactId>s3</artifactId>
<version>2.5.19</version>
</dependency>
<!-- https://mvnrepository.com/artifact/software.amazon.awssdk/regions -->
<dependency>
<groupId>software.amazon.awssdk</groupId>
<artifactId>regions</artifactId>
<version>2.5.19</version>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>software.amazon.awssdk</groupId>
<artifactId>bom</artifactId>
<version>2.5.19</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
# 1 楼答案
加载类时版本不匹配会导致
NoSuchFieldError
(设置属性无法解决此问题。异常指的是类的字段,而不是
Properties
对象中的属性。)没错!包含
UserAgentUtils
类和JavaSystemSettings
类的JAR之间存在版本不匹配