org.springframework.boot未找到名称为“runtime”的配置

尝试使用 gradle bootRun 运行我的程序时，错误显示

无法应用名为“runtime”的插件“org.springframework.boot”配置未找到

以下是我的 build.gradle

 buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath("org.springframework.boot:spring-boot-gradle-plugin:1.5.3.RELEASE")
    }
}

apply plugin: 'war'
apply plugin: 'java'
apply plugin: 'idea'
apply plugin: 'org.springframework.boot'
apply plugin: 'application'

jar {
    baseName = 'blockchain-demo'
    version = '0.0.1'
}

war {
    baseName = 'blockchain-demo'
    version = '0.0.1'
}

application {
    mainClass = 'web.Application'
}

repositories {
    mavenCentral()
}

sourceCompatibility = 1.8
targetCompatibility = 1.8

dependencies {
    compile("org.springframework.boot:spring-boot-starter-thymeleaf")
    compile("org.springframework.boot:spring-boot-devtools")
    testCompile("org.springframework.boot:spring-boot-starter-test")
    testCompile("junit:junit")
}