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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.tuscanyscatours.currencyconverter.servlet;
import java.io.IOException;
import java.io.Writer;
import javax.servlet.ServletConfig;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.osoa.sca.ComponentContext;
import org.osoa.sca.annotations.Reference;
import com.tuscanyscatours.currencyconverter.CurrencyConverter;
public class CurrencyConverterServlet extends HttpServlet {
@Reference
protected CurrencyConverter currencyConverter;
@Override
public void init(ServletConfig config) {
if (currencyConverter == null) {
// The Currency Converter reference will only be injected from the @Reference
// annotation in containers supporting SCA "deep" integration. In other
// environments in can be looked up from the ComponentContext.
ComponentContext context =
(ComponentContext)config.getServletContext().getAttribute("org.osoa.sca.ComponentContext");
currencyConverter = context.getService(CurrencyConverter.class, "currencyConverter");
}
}
@Override
protected void service(HttpServletRequest request, HttpServletResponse response) throws IOException {
Writer out = response.getWriter();
out.write("<html><body><h2>SCA Tours Currency Converter Servlet</h2>");
out.write("Welcome to the SCA Tours Currency Converter Servlet<p>");
out.write("<form method=post action=\"CurrencyConverterServlet\">");
out.write("Enter value in US Dollars");
out.write("<input type=text name=dollars size=15><p>");
out.write("<input type=submit>");
out.write("</form><p>");
String dollarsStr = request.getParameter("dollars");
if (dollarsStr != null) {
double dollars = Double.parseDouble(dollarsStr);
double converted = currencyConverter.convert("USD", "GBP", dollars);
out.write(dollars + " US Dollars = " + converted + " GB Pounds");
}
out.write("</body></html>");
out.write("</body></html>");
out.flush();
out.close();
}
}
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