Question

@RunWith(SpringRunner.class)
@SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT)
@Import({ JerseyConfig.class })
public class BenchApplicationTest {

@Autowired
private TestRestTemplate restTemplate;

@Test
public void contextLoads() {

    ResponseEntity<String> entity = this.restTemplate.getForEntity("/bench/healthcheck", String.class);
    assertThat(entity.getStatusCode()).isEqualTo(HttpStatus.OK);

  }

}

我的应用程序执行完美，我可以使用Postman 测试api。但是，当我尝试使用上述方法执行测试用例来测试API时，会出现以下错误。

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'testRestTemplate': Initialization of bean failed; nested exception is java.lang.NoSuchFieldError: INSTANCE
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:562) ~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) ~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]
.....
Caused by: java.lang.NoSuchFieldError: INSTANCE
at org.apache.http.conn.ssl.SSLConnectionSocketFactory.<clinit>(SSLConnectionSocketFactory.java:144) ~[httpclient-4.5.2.jar:4.5.2]
at org.apache.http.impl.client.HttpClientBuilder.build(HttpClientBuilder.java:962) ~[httpclient-4.5.2.jar:1.2.2]

我已经尝试检查此错误，并且几乎所有人都建议（如此link和link），有多个版本的jar（http-client / http-core））在我的申请中。我已经检查过，我在我的应用程序中找不到多个版本的SSLConnectionSocketFactory。如果有相互冲突的罐子，我怎么知道哪些是冲突的。我不手动添加jar，它是一个maven项目。在过去的一周里我遇到了这个问题，现在我的智慧结束了。

请在下面找到我的pom.xml

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.4.2.RELEASE</version>
</parent>
<dependencies>
    <!-- Spring dependencies -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-jersey</artifactId>
        <exclusions>
            <exclusion>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-tomcat</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-jetty</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-configuration-processor</artifactId>
        <optional>true</optional>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-actuator</artifactId>
    </dependency>
    <dependency>
        <groupId>com.sun.jersey</groupId>
        <artifactId>jersey-json</artifactId>
        <version>1.18.1</version>
    </dependency>
    <dependency>
        <groupId>org.antlr</groupId>
        <artifactId>antlr-complete</artifactId>
        <version>3.5.2</version>
    </dependency>
    <dependency>
        <groupId>com.zaxxer</groupId>
        <artifactId>HikariCP</artifactId>
    </dependency>
    <dependency>
        <groupId>commons-beanutils</groupId>
        <artifactId>commons-beanutils</artifactId>
    </dependency>
    <dependency>
        <groupId>org.apache.commons</groupId>
        <artifactId>commons-lang3</artifactId>
        <version>3.3.2</version>
    </dependency>
    <dependency>
        <groupId>commons-collections</groupId>
        <artifactId>commons-collections</artifactId>
    </dependency>
    <dependency>
        <groupId>commons-validator</groupId>
        <artifactId>commons-validator</artifactId>
        <version>1.4.1</version>
    </dependency>

    <dependency>
        <groupId>com.sun.jersey.contribs</groupId>
        <artifactId>jersey-multipart</artifactId>
        <version>1.19.3</version>
    </dependency>
    <dependency>
        <groupId>net.sf.json-lib</groupId>
        <artifactId>json-lib</artifactId>
        <version>2.4</version>
    </dependency>
    <dependency>
        <groupId>org.jsoup</groupId>
        <artifactId>jsoup</artifactId>
        <version>1.7.2</version>
    </dependency>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>javax.servlet-api</artifactId>
    </dependency>
    <dependency>
        <groupId>org.antlr</groupId>
        <artifactId>antlr-complete</artifactId>
        <version>3.5.2</version>
    </dependency>
    <dependency>
        <groupId>com.rabbitmq</groupId>
        <artifactId>amqp-client</artifactId>
        <version>2.8.6</version>
    </dependency>
    <dependency>
        <groupId>org.mockito</groupId>
        <artifactId>mockito-all</artifactId>
        <version>1.9.0</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>com.oracle</groupId>
        <artifactId>ojdbc6</artifactId>
        <version>11.2.0.4</version>
    </dependency>
    <dependency>
        <groupId>org.owasp.esapi</groupId>
        <artifactId>esapi</artifactId>
        <version>2.1.0</version>
    </dependency>
    <dependency>
        <groupId>com.sun.mail</groupId>
        <artifactId>javax.mail</artifactId>
    </dependency>
    <dependency>
        <groupId>org.freemarker</groupId>
        <artifactId>freemarker</artifactId>
    </dependency>
    <dependency>
        <groupId>org.apache.commons</groupId>
        <artifactId>commons-jcs-jcache</artifactId>
        <version>2.0-beta-1</version>
    </dependency>
    <dependency>
        <groupId>org.reflections</groupId>
        <artifactId>reflections</artifactId>
        <version>0.9.9</version>
    </dependency>
    <dependency>
        <groupId>com.codahale.metrics</groupId>
        <artifactId>metrics-healthchecks</artifactId>
        <version>3.0.1</version>
    </dependency>
    <dependency>
        <groupId>com.googlecode.json-simple</groupId>
        <artifactId>json-simple</artifactId>
    </dependency>
</dependencies>

任何帮助都将不胜感激。

Answer 1

快速回答

快速检查pom.xml是否显示特定依赖关系org.owasp.esapi:esapi提取旧3.1版本的httpclient。尝试将排除部分添加到此依赖关系中，如下所述。如果这没有帮助，请相应地处理依赖树

完整答案

在项目根文件夹

下运行以下命令

mvn dependency:tree -Dincludes=commons-httpclient

这将打印项目的maven依赖树，其中包含所有已提取的具有工件ID commons-httpclient的传递依赖项，例如：

[INFO] your:project:jar:1.0-SNAPSHOT
[INFO] \- org.owasp.esapi:esapi:jar:2.1.0:compile
[INFO]    \- org.owasp.antisamy:antisamy:jar:1.4.3:compile
[INFO]       \- commons-httpclient:commons-httpclient:jar:3.1:compile

您可以确定httpclient的错误版本的来源是什么（对于我们的示例，让它为org.owasp.esapi:esapi），然后您可以通过修改pom.xml隐式地排除该传递依赖项：

        <dependency>
            <groupId>org.owasp.esapi</groupId>
            <artifactId>esapi</artifactId>
            <version>2.1.0</version>
            <!-- change starts here -->
            <exclusions>
                <exclusion>
                    <groupId>commons-httpclient</groupId>
                    <artifactId>commons-httpclient</artifactId>
                </exclusion>
            </exclusions>
            <!-- change ends here -->
        </dependency>

请注意，您可能需要使用通配符（如

）过滤依赖关系树

mvn dependency:tree -Dincludes=*http*

或甚至通过普通树输出调用mvn dependency:tree而没有参数

最后，你最终可能会明确地向你的pom.xml添加必需的依赖项，找到错误的版本，并将其排除在上面的谴责中：

<dependency>
  <groupId>org.apache.httpcomponents</groupId>
  <artifactId>httpclient</artifactId>
  <version>4.5.2</version>
</dependency>

<强>更新

由于上述问题尚未解决。方便的代码片段，用于确定从类路径加载的所有文件：

ClassLoader cl = ClassLoader.getSystemClassLoader();

URL[] urls = ((URLClassLoader)cl).getURLs();

for(URL url: urls){
    System.out.println(url.getFile());
}

您可以在contextLoads()致电之前将其放入restTemplate并检查/共享控制台输出吗？

无法使用TestRestTemplate Jar Conflict测试Spring Boot Jersey Rest API

1 个答案: