JSReport API使用Java从响应中保存PDF

Question

我需要保存POST服务的PDF，但总是收到错误：

public static final String base_url = "https://evx.jsreportonline.net/api/report";

static {
    HttpsURLConnection.setDefaultHostnameVerifier((hostname, session) -> hostname.equals("evx.jsreportonline.net"));
}

private HttpHeaders getHeaders() {
    if (null == headers) {
        headers = new HttpHeaders();
        headers.setContentType(MediaType.APPLICATION_JSON);
        headers.setAccept(Arrays.asList(MediaType.ALL));
        headers.add("Authorization", "Basic " + Base64.getEncoder().encodeToString("test_pdf:test_pdf".getBytes()));
    }
    return headers;
}

public void getRepo() {

    List<HttpMessageConverter<?>> messageConverters = new ArrayList<HttpMessageConverter<?>>();
    MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter();
    RestTemplate restTemplate = new RestTemplate();
    Json jsonObj = new Json("{\"template\":{\"shortid\":\"JCdUaT_\"},\"data\":null}");

    // REQUEST
    HttpEntity<Object> entity = new HttpEntity<>(jsonObj, this.getHeaders());

    /* MENSAGE CONVERTER */
    converter.setSupportedMediaTypes(Collections.singletonList(MediaType.ALL));
    messageConverters.add(converter);
    restTemplate.setMessageConverters(messageConverters);

    /* RESPONSE */
    try {
        Object result = restTemplate.postForObject(base_url, entity, Object.class);
        byte[] resultByteArr = (byte[]) result;
    } catch (Exception e) {
        System.out.println(e.getMessage() + " " + e);
    }
}

Answer 1

在这种情况下，curl对于调试非常有用。

如果我使用您的属性、auth、json有效负载和apiendpoint并用curl发布请求

curl-i--用户test_pdf:test_pdf-h“content-type：application/json”-h“accept：application/json”-x post-d'{“template”：{“shortId”：“jcduat_”},“data”：null}“https://evx.jsreportonline.net/api/report

我得到以下建议

HTTP/2 200 
date: Fri, 24 Jan 2020 19:45:07 GMT
content-type: application/pdf
server: nginx/1.17.6
x-powered-by: Express
access-control-allow-origin: *
access-control-expose-headers: *
set-cookie: render-complete=true; Path=/
set-cookie:  
content-disposition: inline;filename=invoice-main.pdf
jo-credits-spent: 1.12

Warning: Binary output can mess up your terminal. Use "--output -" to tell 
Warning: curl to output it to your terminal anyway, or consider "--output 
Warning: <FILE>" to save to a file.

这告诉我，我正在获取二进制数据作为响应。在这种情况下，我将需要使用不同的转换器。如图所示尝试“ByteArrayHttpMessageConverter”良好的ans