Question

我的单build.gradle看起来像这样：

buildscript {
    ext {
        springBootVersion = '2.0.0.BUILD-SNAPSHOT'
    }
    repositories {
        mavenCentral()
        maven { url "https://repo.spring.io/snapshot" }
        maven { url "https://repo.spring.io/milestone" }
    }
    dependencies {
        classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
    }
}

apply plugin: 'java'
apply plugin: 'org.springframework.boot'
compileJava {
    sourceCompatibility = 1.8
    targetCompatibility = 1.8
}
version = '0.0.1-SNAPSHOT'
sourceCompatibility = 1.8
targetCompatibility = 1.8

compileOptions {
    sourceCompatibility sourceCompatibility
    targetCompatibility targetCompatibility
}


repositories {
    mavenCentral()
    maven { url "https://repo.spring.io/snapshot" }
    maven { url "https://repo.spring.io/milestone" }
}


dependencies {
    compile('org.springframework.boot:spring-boot-starter-data-jpa')
    compile('org.springframework.boot:spring-boot-starter-jdbc')
    compile('org.springframework.boot:spring-boot-starter-security')
    compile('org.springframework.boot:spring-boot-starter-validation')
    compile('org.springframework.boot:spring-boot-starter-web')
    runtime('com.microsoft.sqlserver:mssql-jdbc')
    testCompile('org.springframework.boot:spring-boot-starter-test')
}

但gradle clean build产生：

FAILURE: Build failed with an exception.

* Where:                    
Build file 'D:\objectsharingsystem\build.gradle' line: 16

* What went wrong:          
A problem occurred evaluating root project 'object-sharing-system'.
> java.lang.UnsupportedClassVersionError: org/springframework/boot/gradle/plugin/SpringBootPlugin : Unsupported major.minor version 52.0

* Try:                      
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

看起来我到处都使用java 8.

java_home设置为java 8

Answer 1

使用maven构建时遇到了类似的问题。在我的例子中，似乎该项目是使用jdk 1.8构建的，但是在jdk 1.7上运行。

本主题帮助我解决了这个问题：Unsupported major.minor version 52.0

Answer 2

问题是我在想法开始后更改了JAVA_HOME ，并且我从想法中运行了gradle build。因此，在重新启动想法后解决了问题

Answer 3

对我来说，我正在使用Gradle。这是因为我之前将USER_HOME/.gradle/gradle.properties文件配置为使用jdk版本7。因此，它将不使用JAVA_HOME。

解决方案是删除gradle.properties文件。

java.lang.UnsupportedClassVersionError：org / springframework / boot / gradle / plugin / SpringBootPlugin：不支持的major.minor版本52.0

3 个答案: