Hi,
I’m new using Box.com’s Java SDK. The application I’m working is trying to use Java to connect to Box.com in order to download a file. The application is a Spring Boot project, version 2.5.9, compiled using Java 8.
The code below “fails” in method: BoxDeveloperEditionAPIConnection.getAppEnterpriseConnection(boxConfig, tokenCache). The method does not throw an error and never comes back from the call. The thread this process is in Stops.
try {
Reader reader = new FileReader("D:/Box/xxxxxxx_config.json");
BoxConfig boxConfig = BoxConfig.readFrom(reader);
IAccessTokenCache tokenCache = new InMemoryLRUAccessTokenCache(100);
BoxDeveloperEditionAPIConnection api = BoxDeveloperEditionAPIConnection.getAppEnterpriseConnection(boxConfig, tokenCache);
BoxFile file = new BoxFile(api, "1081XXXXXXXXX");
BoxFile.Info info = file.getInfo();
FileOutputStream stream = new FileOutputStream(info.getName());
file.download(stream);
try {
stream.close();
} catch (IOException e) {
System.out.println("Failed to close output stream" + e);
}
} catch (BoxAPIException e) {
System.out.println("Error creating Box enterprise client");
e.printStackTrace();
} catch (IOException e1) {
System.out.println("Error creating Box enterprise client:" + e1);
e1.printStackTrace();
} catch (Exception e2) {
System.out.println("Error - Run time exception" + e2);
e2.printStackTrace();
}
Debugging indicates that the call to new OkHttpClient.Builder(this.httpClient) in method BoxAPIConnection.buildHttpClients() fails.
private void buildHttpClients() {
OkHttpClient.Builder httpClientBuilder = new OkHttpClient.Builder();
if (this.trustManager != null) {
try {
SSLContext sslContext = SSLContext.getInstance("SSL");
sslContext.init((KeyManager[])null, new TrustManager[]{this.trustManager}, new SecureRandom());
httpClientBuilder.sslSocketFactory(sslContext.getSocketFactory(), this.trustManager);
} catch (KeyManagementException | NoSuchAlgorithmException var3) {
throw new RuntimeException(var3);
}
}
OkHttpClient.Builder builder = httpClientBuilder.followSslRedirects(true).followRedirects(true).connectTimeout(Duration.ofMillis((long)this.connectTimeout)).readTimeout(Duration.ofMillis((long)this.readTimeout)).connectionSpecs(Collections.singletonList(ConnectionSpec.MODERN_TLS));
if (this.hostnameVerifier != null) {
httpClientBuilder.hostnameVerifier(this.hostnameVerifier);
}
if (this.proxy != null) {
builder.proxy(this.proxy);
if (this.proxyUsername != null && this.proxyPassword != null) {
builder.proxyAuthenticator((route, response) -> {
String credential = Credentials.basic(this.proxyUsername, this.proxyPassword);
return response.request().newBuilder().header("Proxy-Authorization", credential).build();
});
}
if (this.authenticator != null) {
builder.proxyAuthenticator(this.authenticator);
}
}
builder = this.modifyHttpClientBuilder(builder);
this.httpClient = builder.build();
this.noRedirectsHttpClient = (**new OkHttpClient.Builder(this.httpClient)**).followSslRedirects(false).followRedirects(false).build();
}
I’ve tried SDK versions 4.0.0, 4.6.1 as well as 4.7.0, with the same result.
Any advice on how to solve this issue would be helpful.
Thanks in advance,
Bob
