@SpringBootApplication public class MainApplication {
      public static void main(String[] args) {
          RestTemplate template = new RestTemplate();         String url = "";         ResponseEntity
    
      res =                 template.exchange(url, HttpMethod.GET,                         new RequestEntity
     
      (null,null),String.class);         System.out.println(res.getBody());     } } get请求，返回string类型 gradle.build配置文件
     
    

buildscript {
      ext {
          springBootVersion = '2.0.4.RELEASE'     }     repositories {
          mavenCentral()     }     dependencies {
          classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")     } } apply plugin: 'java' apply plugin: 'org.springframework.boot' apply plugin: 'io.spring.dependency-management' //使用插件，将项目中引用jar包打进jar

jar {
      manifest {
          attributes 'Main-Class': 'test.MainApplication'     }     //into('lib') {
        //  from configurations.runtime     //} }