org.apache.http.impl.io.DefaultHttpRequestWriterFactory上的NoSuchFieldError实例
org.apache.http.impl.io.DefaultHttpRequestWriterFactory上的NoSuchFieldError实例
提问于 2015-01-13 19:27:08
java version "1.7.0_71"
Gradle 2.1你好,
UPDATE:依赖关系
gradle dependencies | grep httpcore
| +--- org.apache.httpcomponents:httpcore:4.3.3
| +--- org.apache.httpcomponents:httpcore:4.3.3
| +--- org.apache.httpcomponents:httpcore:4.3.3
| +--- org.apache.httpcomponents:httpcore:4.3.3
| | | | | +--- org.apache.httpcomponents:httpcore:4.1 -> 4.3.3
| +--- org.apache.httpcomponents:httpcore:4.3.3
| | | | | +--- org.apache.httpcomponents:httpcore:4.1 -> 4.3.3这是否意味着我的4.1版本是到4.3.3的软链接？似乎很奇怪，因为当我打印出类加载器正在加载的内容时，它似乎加载了4.3.3：/home/steve/.gradle/caches/modules-2/files-2.1/org.apache.httpcomponents/httpcore/4.3.3/f91b7a4aadc5cf486df6e4634748d7dd7a73f06d/httpcore-4.3.3.jar似乎非常奇怪。
当我尝试运行我的httpClient时，我一直收到这个错误。一切都编译正常。
java.lang.NoSuchFieldError: INSTANCE
at org.apache.http.impl.io.DefaultHttpRequestWriterFactory.<init>(DefaultHttpRequestWriterFactory.java:52我的代码非常简单，删除了不重要的代码，以保持它很小：
public class GenieClient {
private CloseableHttpClient mClient;
public GenieClient() {
ClassLoader classLoader = GenieClient.class.getClassLoader();
URL resource = classLoader.getResource("org/apache/http/message/BasicLineFormatter.class");
log.log(Level.INFO, "resource: " + resource);
mClient = HttpClientBuilder.create().build();
}
public int sendRequest() {
int responseCode = -1;
try {
HttpResponse response = mClient.execute(new HttpPost("http://www.google.com"));
responseCode = response.getStatusLine().getStatusCode();
}
catch(IOException ex) {
log.log(Level.SEVERE, "IOException: " + ex.getMessage());
}
return responseCode;
}
}我从classLoader得到的输出是这样的：
INFO: resource: jar:file:/home/steve/.gradle/caches/modules-2/files-2.1/org.apache.httpcomponents/httpcore/4.3.3/f91b7a4aadc5cf486df6e4634748d7dd7a73f06d/httpcore-4.3.3.jar!/org/apache/http/message/BasicLineFormatter.class我使用gradle作为构建工具，并在我的build.gradle文件中设置了如下依赖项：
dependencies {
compile 'org.apache.httpcomponents:httpclient:4.3.6'
}我还尝试包含以下httpcore，但仍然收到相同的错误：
compile 'org.apache.httpcomponents:httpcore:4.4'一切正常，只有当我运行我的httpClient的时候，
非常感谢您的建议，
回答 1
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/27921077
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