/**
* GET 요청을 처리한다.
*
* @param baseUrl 기본 URL
* @param httpInvocation 기본 URL뒤에 붙는 경로
* @return
*/
public <T> T get(String baseUrl, HttpInvocation<T> httpInvocation) {
Assert.notNull(httpInvocation, "httpInvocation 값은 null일 수 없다.");
GetMethod getMethod = new GetMethod(baseUrl + httpInvocation.getUri());
if (httpInvocation.getParameters().length > 0) {
getMethod.setQueryString(httpInvocation.getParameters());
}
return invoke(getMethod, httpInvocation);
}
protected <T> void processOnResponses(HttpMethod httpMethod, HttpInvocation<T> httpInvocation)
throws Exception {
int statusCode = httpMethod.getStatusCode();
httpInvocation.onResponseStatus(statusCode);
Header[] responseHeaders = httpMethod.getResponseHeaders();
if (ArrayUtils.isNotEmpty(responseHeaders)) {
for (Header header : responseHeaders) {
httpInvocation.onResponseHeader(header.getName(), header.getValue());
}
}
httpInvocation.onResponseBody(httpMethod.getResponseBodyAsStream());
}
/**
* POST 요청을 처리한다.
*
* @param <T>
* @param baseUrl
* @param httpInvocation
* @return
*/
public <T> T post(String baseUrl, HttpInvocation<T> httpInvocation) {
Assert.notNull(httpInvocation, "httpInvocation 값은 null일 수 없다.");
PostMethod postMethod = new PostMethod(baseUrl + httpInvocation.getUri());
postMethod.setRequestHeader(
"Content-Type",
"application/x-www-form-urlencoded; charset=" + httpInvocation.getEncoding());
String parameterEncoding = httpInvocation.getParameterEncoding();
if (StringUtils.isNotBlank(parameterEncoding)) {
postMethod.getParams().setContentCharset(parameterEncoding);
}
postMethod.addParameters(httpInvocation.getParameters());
return invoke(postMethod, httpInvocation);
}
/**
* HTTP 요청 결과를 HttpInvocation 객체에 위임하여 결과를 가공해 리턴한다.
*
* @param <T>
* @param httpMethod
* @param httpInvocation
* @return
*/
public <T> T invoke(HttpMethod httpMethod, HttpInvocation<T> httpInvocation) {
populateCookiePolicy(httpMethod);
populateRequestHeaders(httpMethod, httpInvocation);
try {
httpClient.executeMethod(httpMethod);
processOnResponses(httpMethod, httpInvocation);
} catch (Exception ex) {
httpInvocation.onException(ex);
} finally {
httpMethod.releaseConnection();
}
return httpInvocation.getReturnValue();
}
protected <T> void populateRequestHeaders(
HttpMethod httpMethod, HttpInvocation<T> httpInvocation) {
List<Header> requestHeaders = httpInvocation.getRequestHeaders();
if (!CollectionUtils.isEmpty(requestHeaders)) {
for (Header header : requestHeaders) {
httpMethod.addRequestHeader(header);
}
}
}