com.aspectran.web.activity.WebActivity Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2019 The Aspectran Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.aspectran.web.activity;
import com.aspectran.core.activity.ActivityPrepareException;
import com.aspectran.core.activity.ActivityTerminatedException;
import com.aspectran.core.activity.AdapterException;
import com.aspectran.core.activity.CoreActivity;
import com.aspectran.core.activity.TransletNotFoundException;
import com.aspectran.core.activity.request.RequestParseException;
import com.aspectran.core.adapter.ResponseAdapter;
import com.aspectran.core.adapter.SessionAdapter;
import com.aspectran.core.context.ActivityContext;
import com.aspectran.core.context.rule.RequestRule;
import com.aspectran.core.context.rule.type.MethodType;
import com.aspectran.core.support.i18n.locale.LocaleChangeInterceptor;
import com.aspectran.core.support.i18n.locale.LocaleResolver;
import com.aspectran.core.util.StringUtils;
import com.aspectran.web.activity.request.ActivityRequestWrapper;
import com.aspectran.web.activity.request.MultipartFormDataParser;
import com.aspectran.web.activity.request.MultipartRequestParseException;
import com.aspectran.web.activity.request.WebRequestBodyParser;
import com.aspectran.web.adapter.HttpServletRequestAdapter;
import com.aspectran.web.adapter.HttpServletResponseAdapter;
import com.aspectran.web.adapter.HttpSessionAdapter;
import com.aspectran.web.support.http.HttpHeaders;
import com.aspectran.web.support.http.MediaType;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.UnsupportedEncodingException;
/**
* An activity that processes a web request.
*
* @since 2008. 4. 28.
*/
public class WebActivity extends CoreActivity {
private static final String MULTIPART_FORM_DATA_PARSER_SETTING_NAME = "multipartFormDataParser";
private static final String MAX_REQUEST_SIZE_SETTING_NAME = "maxRequestSize";
private final HttpServletRequest request;
private final HttpServletResponse response;
/**
* Instantiates a new WebActivity.
*
* @param context the current ActivityContext
* @param request the HTTP request
* @param response the HTTP response
*/
public WebActivity(ActivityContext context, HttpServletRequest request, HttpServletResponse response) {
super(context);
this.request = request;
this.response = response;
if (request instanceof ActivityRequestWrapper) {
((ActivityRequestWrapper)request).setWebActivity(this);
}
}
@Override
public void prepare(String transletName, MethodType requestMethod)
throws TransletNotFoundException, ActivityPrepareException {
// Check for HTTP POST with the X-HTTP-Method-Override header
if (requestMethod == MethodType.POST) {
String method = request.getHeader(HttpHeaders.X_METHOD_OVERRIDE);
if (method != null) {
// Check if the header value is in our methods list
MethodType hiddenRequestMethod = MethodType.resolve(method);
if (hiddenRequestMethod != null) {
// Change the request method
requestMethod = hiddenRequestMethod;
}
}
}
super.prepare(transletName, requestMethod);
}
@Override
protected void adapt() throws AdapterException {
try {
SessionAdapter sessionAdapter = new HttpSessionAdapter(request);
setSessionAdapter(sessionAdapter);
HttpServletRequestAdapter requestAdapter = new HttpServletRequestAdapter(getTranslet().getRequestMethod(), request);
if (getParentActivity() == null) {
String maxRequestSizeSetting = getSetting(MAX_REQUEST_SIZE_SETTING_NAME);
if (!StringUtils.isEmpty(maxRequestSizeSetting)) {
long maxRequestSize = Long.parseLong(maxRequestSizeSetting);
if (maxRequestSize >= 0L) {
requestAdapter.setMaxRequestSize(maxRequestSize);
}
}
String requestEncoding = getIntendedRequestEncoding();
if (requestEncoding != null) {
try {
requestAdapter.setEncoding(requestEncoding);
} catch (UnsupportedEncodingException e) {
throw new RequestParseException("Unable to set request encoding to " + requestEncoding, e);
}
}
}
setRequestAdapter(requestAdapter);
ResponseAdapter responseAdapter = new HttpServletResponseAdapter(response, this);
if (getParentActivity() == null) {
String responseEncoding = getIntendedResponseEncoding();
if (responseEncoding != null) {
responseAdapter.setEncoding(responseEncoding);
}
}
setResponseAdapter(responseAdapter);
} catch (Exception e) {
throw new AdapterException("Failed to adapt for Web Activity", e);
}
super.adapt();
}
@Override
protected void parseRequest() throws ActivityTerminatedException, RequestParseException {
if (getParentActivity() == null) {
((HttpServletRequestAdapter)getRequestAdapter()).preparse();
} else {
((HttpServletRequestAdapter)getRequestAdapter()).preparse(
(HttpServletRequestAdapter)getParentActivity().getRequestAdapter());
}
MediaType mediaType = ((HttpServletRequestAdapter)getRequestAdapter()).getMediaType();
if (mediaType != null) {
if (WebRequestBodyParser.isMultipartForm(getRequestAdapter().getRequestMethod(), mediaType)) {
parseMultipartFormData();
} else if (WebRequestBodyParser.isURLEncodedForm(mediaType)) {
parseURLEncodedFormData();
}
}
super.parseRequest();
}
/**
* Parse the multipart form data.
*/
private void parseMultipartFormData() throws MultipartRequestParseException {
String multipartFormDataParser = getSetting(MULTIPART_FORM_DATA_PARSER_SETTING_NAME);
if (multipartFormDataParser == null) {
throw new MultipartRequestParseException("The setting name 'multipartFormDataParser' for multipart " +
"form data parsing is not specified. Please specify 'multipartFormDataParser' via Aspect so " +
"that Translet can parse multipart form data.");
}
MultipartFormDataParser parser = getBean(multipartFormDataParser);
if (parser == null) {
throw new MultipartRequestParseException("No bean named '" + multipartFormDataParser + "' is defined");
}
parser.parse(getRequestAdapter());
}
/**
* Parse the URL-encoded Form Data to get the request parameters.
*/
private void parseURLEncodedFormData() throws RequestParseException {
WebRequestBodyParser.parseURLEncoded(getRequestAdapter());
}
@Override
protected LocaleResolver resolveLocale() {
LocaleResolver localeResolver = super.resolveLocale();
if (localeResolver != null) {
String localeChangeInterceptorId = getSetting(RequestRule.LOCALE_CHANGE_INTERCEPTOR_SETTING_NAME);
if (localeChangeInterceptorId != null) {
LocaleChangeInterceptor localeChangeInterceptor = getBean(LocaleChangeInterceptor.class,
localeChangeInterceptorId);
localeChangeInterceptor.handle(getTranslet(), localeResolver);
}
}
return localeResolver;
}
}