问在方法中，当大小较大时，接收字段为空

EN

@PostMapping(value = "/func")
public ResponseMessage func(@RequestParam(value = "message", defaultValue = "") String message) {
    if(StringUtils.isEmpty(message))    {
        // alert
    }
}

PoolingHttpClientConnectionManager connManager = new PoolingHttpClientConnectionManager();
// Create socket configuration
SocketConfig socketConfig = SocketConfig.custom().setSoKeepAlive(true)
        .setSoTimeout(180000).setSoReuseAddress(true).setTcpNoDelay(true).build();

// Configure the connection manager to use socket configuration either
// by default or for a specific host.
connManager.setDefaultSocketConfig(socketConfig);
// Validate connections after 1 minute of inactivity
connManager.setValidateAfterInactivity(180000);
connManager.setMaxTotal(100);
connManager.setDefaultMaxPerRoute(20);

// Create global request configuration
RequestConfig defaultRequestConfig = RequestConfig.custom()
        .setCookieSpec(CookieSpecs.DEFAULT).setExpectContinueEnabled(true)
        .setConnectTimeout(180000).setSocketTimeout(180000)
        .setConnectionRequestTimeout(180000).build();

CloseableHttpClient hc = HttpClients.custom().setConnectionManager(connManager)
        .setDefaultRequestConfig(defaultRequestConfig).setDefaultSocketConfig(socketConfig)
        .build();


String encodedMsg = new String(Files.readAllBytes(Paths.get(args[0])), UTF_8);
UrlEncodedFormEntity entity = new UrlEncodedFormEntity(Lists.newArrayList(new BasicNameValuePair("message", encodedMsg)), UTF_8);
HttpUriRequest httpPost = HttpUtils.post("http://url/func", entity);

try (CloseableHttpResponse response = hc.execute(httpPost)) {
    // ...
}

multipart.maxRequestSize=30MB
multipart.maxFileSize=30MB
spring.http.multipart.maxFileSize=30Mb
spring.http.multipart.maxRequestSize=30Mb