@Value在单元测试中返回 null

问：

我有一个带有端点测试配置类的 spring boot 应用程序和一个单元测试来测试我的 http 客户端。我正在尝试从位于我的 src/test 中的 application.properties 中获取我的服务器地址和端口。（所有类都在我的 src/test 中。

这是我的配置类代码：

import java.io.File;
import java.io.IOException;
import java.nio.file.Files;

import javax.xml.bind.JAXBException;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.util.ResourceUtils;
import com.nulogix.billing.service.PredictionEngineService;
import com.nulogix.billing.ws.endpoint.AnalyzeEndPoint;
import com.nulogix.billing.ws.endpoint.GetVersionEndPoint;
@Configuration
public class EndPointTestConfiguration {




    @Value("${billing.engine.address}")    
    private String mockAddress;

    @Value("${billing.engine.port}")
    private String mockPort;

    @Bean
    public String getAddress() {
        String serverAddress = "http://" + mockAddress + ":" + mockPort;
        return serverAddress;

    }

    @Bean
    public GetVersionEndPoint getVersionEndPoint() {
        return new GetVersionEndPoint();
    }

我用 @value 注释了我的 .properties 中的值，然后创建了一个方法，我用 bean 实例化了该方法以返回我的服务器地址字符串。

然后，我在 HttpClientTest 类中使用该字符串值：

import static org.junit.Assert.*;

import java.io.IOException;
import java.util.Map;

import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.fluent.Request;
import org.apache.http.entity.ContentType;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.context.ConfigurableApplicationContext;

import com.google.gson.Gson;
import com.nulogix.billing.configuration.EndPointTestConfiguration;
import com.nulogix.billing.mockserver.MockServerApp;

@SpringBootTest(classes = EndPointTestConfiguration.class)
public class HttpClientTest {


    @Autowired
    EndPointTestConfiguration endpoint;


    public static final String request_bad  = "ncs|56-2629193|1972-03-28|20190218|77067|6208|3209440|self|";
    public static final String request_good = "ncs|56-2629193|1972-03-28|20190218|77067|6208|3209440|self|-123|-123|-123|0.0|0.0|0.0|0.0|0.0|0.0|0.0";
    //gets application context
    static ConfigurableApplicationContext context;

    //call mock server before class

    @BeforeClass
    static public void  setup(){
        SpringApplication springApplication = new SpringApplicationBuilder()           
                .sources(MockServerApp.class)
                .build();
        context = springApplication.run();
    }
    //shutdown mock server after class

    @AfterClass
    static public void tearDown(){
        SpringApplication.exit(context);
        }



    @Test
    public void test_bad() throws ClientProtocolException, IOException {
        // missing parameter
        String result = Request.Post(endpoint.getAddress())
                .connectTimeout(2000)
                .socketTimeout(2000)
                .bodyString(request_bad, ContentType.TEXT_PLAIN)
                .execute().returnContent().asString();

        Map<?, ?> resultJsonObj = new Gson().fromJson(result, Map.class);

        // ensure the key exists
        assertEquals(resultJsonObj.containsKey("status"), true);
        assertEquals(resultJsonObj.containsKey("errorMessage"), true);

        // validate values
        Boolean status = (Boolean) resultJsonObj.get("status");
        assertEquals(status, false);
        String errorMessage = (String) resultJsonObj.get("errorMessage");
        assertEquals(errorMessage.contains("Payload has incorrect amount of parts"), true);

    }


    @Test
    public void test_good() throws ClientProtocolException, IOException {
        String result = Request.Post(endpoint.getAddress())
                .connectTimeout(2000)
                .socketTimeout(2000)
                .bodyString(request_good, ContentType.TEXT_PLAIN)
                .execute().returnContent().asString();

        Map<?, ?> resultJsonObj = new Gson().fromJson(result, Map.class);

        // ensure the key exists
        assertEquals(resultJsonObj.containsKey("status"), true);
        assertEquals(resultJsonObj.containsKey("errorMessage"), false);
        assertEquals(resultJsonObj.containsKey("HasCopay"), true);
        assertEquals(resultJsonObj.containsKey("CopayAmount"), true);
        assertEquals(resultJsonObj.containsKey("HasCoinsurance"), true);
        assertEquals(resultJsonObj.containsKey("CoinsuranceAmount"), true);
        assertEquals(resultJsonObj.containsKey("version"), true);

        // validate values
        Boolean status = (Boolean) resultJsonObj.get("status");
        assertEquals(status, true);
        String version = (String) resultJsonObj.get("version");
        assertEquals(version, "0.97");

    }

}

我在 request.post 中使用它，我不想在我的 IP 地址和端口号中硬编码。

当我运行测试时，它说

[ERROR]   HttpClientTest.test_bad:63 NullPointer
[ERROR]   HttpClientTest.test_good:86 NullPointer

但我不确定为什么它是空的？我很确定我已经实例化了所有内容并且字符串已明确填充。.

我的配置包结构是 com.billing.mockserver，单元测试的包结构是 com.billing.ws.endpoint。

这是我的application.properties

server.port=9119
server.ssl.enabled=false
logging.config=classpath:logback-spring.xml
logging.file=messages
logging.file.max-size=50MB
logging.level.com.nulogix=DEBUG
billing.engine.address=127.0.0.1
billing.engine.port=9119
billing.engine.api.version=0.97
billing.engine.core.name=Patient_Responsibility