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我跑小你好！项目使用带有。它似乎有效，但我不确定如何实际编写一个测试来测试更改后类是否重新加载。

我可以在启动它，在 java 方法中进行更改，编译类并成功（？）而不重新启动见

spring-boot-loaded [bootRun]: 1 class reloaded

如果我重新加载浏览器，我的更改就会出现。我可以在 IntelliJ 中手动热交换的代码是

@RestController
public class HelloController {

    @RequestMapping("/")
    public String index() {
        return "Greetings FOO from Spring Boot!"; //I can hotswap this output if I recompile
    }

}

如果我编译代码，我可以在 IntelliJ IDEA 中运行它并手动热交换 java 代码。我从 CLI 运行它的方式是，它是文档中参考项目gradle bootRun的副本。我不知道如何在 Ubuntu 中从 CLI 运行测试。

IIUC，测试不测试重新加载，只测试它正在运行。我在 spring 加载的 repo中找到了用于方法重新加载的测试，但它看起来很旧而且文件很多。我可以从命令行使它变得简单，还是只有IDE，例如支持热插拔的IntelliJ IDEA？

我可以编写一个测试来测试重新加载是否有效吗？

我的测试代码是

你好控制器IT

package hello;

import static org.hamcrest.Matchers.equalTo;
import static org.junit.Assert.assertThat;

import java.net.URL;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.test.IntegrationTest;
import org.springframework.boot.test.SpringApplicationConfiguration;
import org.springframework.boot.test.TestRestTemplate;
import org.springframework.http.ResponseEntity;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.test.context.web.WebAppConfiguration;
import org.springframework.web.client.RestTemplate;

@RunWith(SpringJUnit4ClassRunner.class)
@SpringApplicationConfiguration(classes = Application.class)
@WebAppConfiguration
@IntegrationTest({"server.port=0"})
public class HelloControllerIT {

    @Value("${local.server.port}")
    private int port;

    private URL base;
    private RestTemplate template;

    @Before
    public void setUp() throws Exception {
        this.base = new URL("http://localhost:" + port + "/");
        template = new TestRestTemplate();
    }

    @Test
    public void getHello() throws Exception {
        ResponseEntity<String> response = template.getForEntity(base.toString(), String.class);
        assertThat(response.getBody(), equalTo("Greetings from Spring Boot!"));
    }
}

HelloControllerTest

package hello;

import static org.hamcrest.Matchers.equalTo;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.test.SpringApplicationConfiguration;
import org.springframework.http.MediaType;
import org.springframework.mock.web.MockServletContext;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.test.context.web.WebAppConfiguration;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
import org.springframework.test.web.servlet.setup.MockMvcBuilders;

@RunWith(SpringJUnit4ClassRunner.class)
@SpringApplicationConfiguration(classes = MockServletContext.class)
@WebAppConfiguration
public class HelloControllerTest {

    private MockMvc mvc;

    @Before
    public void setUp() throws Exception {
        mvc = MockMvcBuilders.standaloneSetup(new HelloController()).build();
    }

    @Test
    public void getHello() throws Exception {
        mvc.perform(MockMvcRequestBuilders.get("/").accept(MediaType.APPLICATION_JSON))
                .andExpect(status().isOk())
                .andExpect(content().string(equalTo("Greetings from Spring Boot!")));
    }
}

构建.gradle

buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {

        classpath "org.springframework.boot:spring-boot-gradle-plugin:1.4.3.RELEASE"
        classpath 'org.springframework:springloaded:1.2.6.RELEASE'
        classpath 'io.spring.gradle:dependency-management-plugin:0.6.1.RELEASE'
    }
}

apply plugin: 'java'
apply plugin: 'eclipse'
apply plugin: 'idea'
apply plugin: 'org.springframework.boot'
apply plugin: 'rebel'

buildscript {
    repositories {
        mavenCentral()
    }

    dependencies {
        classpath group: 'org.zeroturnaround', name: 'gradle-jrebel-plugin', version: '1.1.3'
    }
}
jar {
    baseName = 'gs-spring-boot'
    version =  '0.1.0'
}

repositories {
    mavenCentral()
}

sourceCompatibility = 1.8
targetCompatibility = 1.8

dependencies {
    // tag::jetty[]
    compile("org.springframework.boot:spring-boot-starter-web") {
        exclude module: "spring-boot-starter-tomcat"
    }
    compile("org.springframework.boot:spring-boot-starter-jetty")
    // end::jetty[]
    // tag::actuator[]
    compile("org.springframework.boot:spring-boot-starter-actuator")

    testCompile("org.springframework.boot:spring-boot-starter-test")
    testCompile("junit:junit")

}

// change default IntelliJ output directory for compiling classes
idea {
    module {
        inheritOutputDirs = false
        outputDir = file("$buildDir/classes/main/")
    }
}

task wrapper(type: Wrapper) {
    gradleVersion = '2.3'
}
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