如何传递超文本传输协议报头到GET请求在Spring RestTem板[重复]

Question

我写客户端REST GET调用使用Spring RestTem板。我需要将超文本传输协议头传递给GET调用。

请查找代码段：

String url = "http://<hostname>:7001/api?id=231";
ResponseEntity<ResponseObject> getEntity = this.restTemplate.getForEntity(url, ResponseObject.class);
return getEntity .getBody();

org.springframework.http.HttpHeaders headers = new org.springframework.http.HttpHeaders();
headers.set("Accept", "application/xml");
headers.set("username", "ABC");

在这个REST get调用中，我需要传递上面的头，比如Accept和username。为了在RestTemplate中传递头，需要对相同的代码进行哪些更改。

Answer 1

通用rest模板执行器方法：

public <T, E extends TIBCOResponse> E executeRequest(HttpMethod method, 
        HttpHeaders httpHeaders, 
        String url,
        T requestBody,
        Map<String, String> paramters, 
        Class<E> clazz) {

    HttpEntity<T> entity = new HttpEntity<>(requestBody, httpHeaders);

    RestTemplate restTemplate = new RestTemplate();

    ResponseEntity<E> response = restTemplate.exchange(url, method, entity, clazz, paramters);

    return response.getBody();
}

服务方法实现：

public ResponseObject FuncCallerInsideRest(IntegrationDTO integrationDTO) {

    String OPERATION_URL = "/FindAccountInfo?accountNumber="+integrationDTO.getAccountNumber();
    Map<String, String> parameters = new HashMap<>();
    httpHeaders = new HttpHeaders();

    httpHeaders.set("RetryLimit", "2");
    httpHeaders.set("Authorization", "abcd");
    httpHeaders.set("SessionID", integrationDTO.getSessionID());

    ResponseObject ResponseObject = this.executeRequest(HttpMethod.GET, httpHeaders,
            BASE_URL.concat(PATH_URL.concat(OPERATION_URL)), null, parameters,
            ResponseObject.class);

    return ResponseObject;
}

Answer 2

getForEntity不支持设置标题。使用交换：

HttpHeaders headers = new HttpHeaders();
headers.set("Accept", "application/xml");
headers.set("username", "ABC");

HttpEntity entity = new HttpEntity(headers);

ResponseEntity<ResponseObject> response = restTemplate.exchange(
    url, HttpMethod.GET, entity,ResponseObject.class);

Answer 3

使用您的代码为：

org.springframework.http.HttpHeaders headers = new 
org.springframework.http.HttpHeaders();
headers.set("Accept", "application/xml");
headers.set("username", "ABC");

String url = "http://<hostname>:7001/api?id=231";
ResponseEntity<ResponseObject> getEntity = 
this.restTemplate.exchange(url,HttpMethod.GET,new HttpEntity<>( headers),ResponseObject.class);
return getEntity .getBody();