我尝试使用Spring的RestTemplate发出一个简单的GET请求。
RestTemplate restTemplate = new RestTemplate();
HttpHeaders headers headers = new HttpHeaders() {
{
String auth = username + ":" + password;
byte[] encodedAuth = Base64.getEncoder().encode(auth.getBytes(StandardCharsets.US_ASCII));
String authHeader = "Basic " + new String(encodedAuth);
set(HttpHeaders.AUTHORIZATION, authHeader);
//set(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON.toString());
}
};
ResponseEntity<FileTypeList> response = restTemplate.exchange(endpoint + FILES, HttpMethod.GET, new HttpEntity(headers), FileTypeList.class);
return response.getBody() != null ? response.getBody().getFileTypes() : Collections.emptyList();
此调用收到超时错误:
java.net.ConnectException: Connection timed out: connect
at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) ~[na:1.8.0_161]
at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) ~[na:1.8.0_161]
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) ~[na:1.8.0_161]
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) ~[na:1.8.0_161]
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) ~[na:1.8.0_161]
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) ~[na:1.8.0_161]
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) ~[na:1.8.0_161]
at java.net.Socket.connect(Socket.java:589) ~[na:1.8.0_161]
at sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:673) ~[na:1.8.0_161]
但是当我尝试与邮递员进行相同的通话时,它可以正常工作。
终结点 https://verda.borsaistanbul.com/files
Spring RestTemplate与邮递员有何不同?
"休息"模板允许您设置代理。有多种方法可以做到这一点,最简单的方法如下:
在创建 RestTemplate 之前,使用以下代码来设置代理:
Properties props = System.getProperties();
props.put("http.proxyHost", "your.proxy.server");
props.put("http.proxyPort", "80");
请注意,这将为 JVM 中的 while Java 应用程序设置代理。
设置代理的另一种方法如下,它将仅为当前代码设置代理:
SimpleClientHttpRequestFactory clientHttpReq = new SimpleClientHttpRequestFactory();
Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress("your.proxy.server", 80));
clientHttpReq.setProxy(proxy);
RestTemplate restTemplate = new RestTemplate(clientHttpReq);
这个解决方案对我有用;我实现了将代理添加到请求标头:
SimpleClientHttpRequestFactory clientHttpReq = new SimpleClientHttpRequestFactory();
Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress(PROXY, 80));
clientHttpReq.setProxy(proxy);
连接解决方案超时:
A. 代理配置:
SimpleClientHttpRequestFactory clientHttpReq = new SimpleClientHttpRequestFactory();
Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress(PROXY, 80));
clientHttpReq.setProxy(proxy);
B. 在 JRE 上禁用 IPv4 IP 的 IPv6 堆栈使用?
即使用 JVM 参数作为-Djava.net.preferIPv4Stack=true