Question

使用Spring RestTemplate，缓冲请求体设置为false并清空体

SimpleClientHttpRequestFactory requestFactory = new SimpleClientHttpRequestFactory();
requestFactory.setBufferRequestBody(false);
requestFactory.setConnectTimeout(60_000);
RestTemplate restTemplate = RestTemplate(requestFactory);
restTemplate.exchange(uri, HttpMethod.PUT, new HttpEntity<>(httpHeaders), Void.class);

我收到411 - Length Required状态代码作为回应。出于某种原因，Spring RestTemplate不会在请求中放置Content-Length: 0标头。

如果我评论requestFactory.setBufferRequestBody(false);行，它会很完美。但我需要它来发送大文件。

UPD：查看调试日志向我们显示，该请求不包含Content-Length标题。

Answer 1

我设法使用RestTemplate和SimpleClientHttpRequestFactory复制了您的问题。切换到Apache HttpComponents HttpClient后，问题就消失了。

以下是我配置RestTemplate：

的方式

import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
import org.springframework.web.client.RestTemplate;

CloseableHttpClient httpClient = HttpClientBuilder
    .create()
    .build();
HttpComponentsClientHttpRequestFactory factory = new HttpComponentsClientHttpRequestFactory(httpClient);
factory.setBufferRequestBody(false);

RestTemplate restTemplate = new RestTemplate(factory);
restTemplate.exchange(......);

希望它有所帮助。

Answer 2

我有同样的问题。我还没有用RestTemplate解决它。我用这样的方式解决了它：

import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.mime.MultipartEntityBuilder;
import org.apache.http.entity.mime.content.FileBody;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;

CloseableHttpClient httpClient = HttpClients.createDefault();
HttpPost uploadFile = new HttpPost("you_url");
MultipartEntityBuilder builder = MultipartEntityBuilder.create();
FileBody fileBody = new FileBody(tempFile.toFile(), ContentType.MULTIPART_FORM_DATA, "file_name");
        builder.addPart("parameter_name", fileBody);
        HttpEntity multipart = builder.build();
        uploadFile.setEntity(multipart);

        try (CloseableHttpResponse response = httpClient.execute(uploadFile)) {
            //....
        }

使用无缓冲的RestTemplate进行PUT请求

2 个答案: