public static void handleActionRedirect(Context context, String path, String baseUrl)
throws IOException {
String method;
String location;
if (!path.contains("@")) {
method = HttpMethod.GET;
location = path;
} else {
int lastIndex = path.indexOf("@") + 1;
method = path.substring(lastIndex);
location = path.substring(0, lastIndex - 1);
}
StringBuilder sb = new StringBuilder("");
String param = null;
if (path.contains("?")) {
int lastIndex2 = path.indexOf("?") + 1;
param = path.substring(lastIndex2);
String[] params = param.split("&");
for (String para : params) {
String[] p = para.split("=");
sb.append(String.format("<input name='%s' value='%s' />", p[0], p[1]));
}
method = method.substring(0, method.indexOf("?"));
}
if (HttpMethod.GET.equalsIgnoreCase(method)) {
String pa = param == null ? "" : "?" + CommonUtil.replaceChinese2Utf8(param);
context.getResponse().sendRedirect(baseUrl + location + pa);
return;
}
String _method = "";
if (HttpMethod.PUT.equalsIgnoreCase(method) || HttpMethod.DELETE.equalsIgnoreCase(method)) {
_method = new String(method);
method = HttpMethod.POST;
}
String action = baseUrl + location;
// 构造一个Form表单模拟客户端发送新的Action请求
String format =
"<form id='ACTION_REDIRECT_FORM' action='%s' method='%s' ><input name='_method' value='%s' />%s<input type='submit' /></form>";
String form = String.format(format, action, method, _method, sb.toString());
String js = "<script>document.getElementById('ACTION_REDIRECT_FORM').submit();</script>";
context.getWriter().print(form + js);
}
public String requestString(
int timeout, String url, String method, Object body, Pair<String, ?>... parameters)
throws IOException, ServerException, ForbiddenException, NotFoundException,
UnauthorizedException, ConflictException {
final String authToken = getAuthenticationToken();
if ((parameters != null && parameters.length > 0) || authToken != null) {
final UriBuilder ub = UriBuilder.fromUri(url);
// remove sensitive information from url.
ub.replaceQueryParam("token", null);
if (parameters != null && parameters.length > 0) {
for (Pair<String, ?> parameter : parameters) {
String name = URLEncoder.encode(parameter.first, "UTF-8");
String value =
parameter.second == null
? null
: URLEncoder.encode(String.valueOf(parameter.second), "UTF-8");
ub.replaceQueryParam(name, value);
}
}
url = ub.build().toString();
}
final HttpURLConnection conn = (HttpURLConnection) new URL(url).openConnection();
conn.setConnectTimeout(timeout > 0 ? timeout : 60000);
conn.setReadTimeout(timeout > 0 ? timeout : 60000);
try {
conn.setRequestMethod(method);
// drop a hint for server side that we want to receive application/json
conn.addRequestProperty(HttpHeaders.ACCEPT, MediaType.APPLICATION_JSON);
if (authToken != null) {
conn.setRequestProperty(HttpHeaders.AUTHORIZATION, authToken);
}
if (body != null) {
conn.addRequestProperty(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON);
conn.setDoOutput(true);
if (HttpMethod.DELETE.equals(
method)) { // to avoid jdk bug described here
// http://bugs.java.com/view_bug.do?bug_id=7157360
conn.setRequestMethod(HttpMethod.POST);
conn.setRequestProperty("X-HTTP-Method-Override", HttpMethod.DELETE);
}
try (OutputStream output = conn.getOutputStream()) {
output.write(DtoFactory.getInstance().toJson(body).getBytes());
}
}
final int responseCode = conn.getResponseCode();
if ((responseCode / 100) != 2) {
InputStream in = conn.getErrorStream();
if (in == null) {
in = conn.getInputStream();
}
final String str;
try (Reader reader = new InputStreamReader(in)) {
str = CharStreams.toString(reader);
}
final String contentType = conn.getContentType();
if (contentType != null && contentType.startsWith(MediaType.APPLICATION_JSON)) {
final ServiceError serviceError =
DtoFactory.getInstance().createDtoFromJson(str, ServiceError.class);
if (serviceError.getMessage() != null) {
if (responseCode == Response.Status.FORBIDDEN.getStatusCode()) {
throw new ForbiddenException(serviceError);
} else if (responseCode == Response.Status.NOT_FOUND.getStatusCode()) {
throw new NotFoundException(serviceError);
} else if (responseCode == Response.Status.UNAUTHORIZED.getStatusCode()) {
throw new UnauthorizedException(serviceError);
} else if (responseCode == Response.Status.CONFLICT.getStatusCode()) {
throw new ConflictException(serviceError);
} else if (responseCode == Response.Status.INTERNAL_SERVER_ERROR.getStatusCode()) {
throw new ServerException(serviceError);
}
throw new ServerException(serviceError);
}
}
// Can't parse content as json or content has format other we expect for error.
throw new IOException(
String.format(
"Failed access: %s, method: %s, response code: %d, message: %s",
UriBuilder.fromUri(url).replaceQuery("token").build(),
method,
responseCode,
str));
}
final String contentType = conn.getContentType();
if (!(contentType == null || contentType.startsWith(MediaType.APPLICATION_JSON))) {
throw new IOException(conn.getResponseMessage());
}
try (Reader reader = new InputStreamReader(conn.getInputStream())) {
return CharStreams.toString(reader);
}
} finally {
conn.disconnect();
}
}
