com.cognifide.aet.common.JsonResponseHandler.java Source code

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Here is the source code for com.cognifide.aet.common.JsonResponseHandler.java

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/**
 * Automated Exploratory Tests
 *
 * Copyright (C) 2013 Cognifide Limited
 *
 * 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.cognifide.aet.common;

import com.google.gson.Gson;

import org.apache.http.HttpResponse;
import org.apache.http.StatusLine;
import org.apache.http.client.HttpResponseException;
import org.apache.http.client.ResponseHandler;
import org.apache.http.entity.mime.MIME;
import org.apache.http.util.EntityUtils;

import java.io.IOException;

class JsonResponseHandler<T> implements ResponseHandler<T> {

    private Class<T> resultClass;

    public JsonResponseHandler(Class<T> resultClass) {
        this.resultClass = resultClass;
    }

    @Override
    public T handleResponse(HttpResponse httpResponse) throws IOException {
        StatusLine statusLine = httpResponse.getStatusLine();
        if (statusLine.getStatusCode() == 200) {
            String result = EntityUtils.toString(httpResponse.getEntity(), MIME.UTF8_CHARSET);
            Gson gson = new Gson();
            return gson.fromJson(result, resultClass);
        } else {
            throw new HttpResponseException(statusLine.getStatusCode(), statusLine.getReasonPhrase());
        }
    }
}