我有一个用Groovy编写的小型Spring Boot测试项目，使用Gradle构建。

spring run src/com/eval/EvalMain.groovy src/com/eval/InputObj.groov

我收到

***************************

APPLICATION FAILED TO START

***************************

Description:

Parameter 0 of constructor in com.eval.InputObj required a bean of type 'java.lang.String' that could not be found.

Action:

Consider defining a bean of type 'java.lang.String' in your configuration.

我的印象是Gradle为我提供了这类功能，而且它应该可以工作，因为Groovy是基于Java构建的。（另外，它是如何知道包路径java.lang的？）下面是我的gradle.build，任何帮助都将不胜感激！

buildscript {
    ext {
        springBootVersion = '1.4.2.RELEASE'
    }
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
    }
}

apply plugin: 'groovy'
apply plugin: 'org.springframework.boot'

jar {
    baseName = 'testJar'
    version = '.0.0.2'
}
sourceCompatibility = 1.8
targetCompatibility = 1.8

repositories {
    mavenCentral()
}

dependencies {
    compile('org.springframework.boot:spring-boot-starter')
    testCompile('org.springframework.boot:spring-boot-starter-test')
}

springBoot {
    mainClass = "com.eval.EvalMain"
}