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feilong is a suite of core and expanded libraries that include utility classes, http, excel,cvs, io classes, and much much more.

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/*
 * Copyright (C) 2008 feilong
 *
 * 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.feilong.net.http.builder;

import static com.feilong.core.CharsetType.UTF8;

import java.io.IOException;

import com.feilong.lib.org.apache.http.HttpEntity;
import com.feilong.lib.org.apache.http.HttpResponse;
import com.feilong.lib.org.apache.http.ParseException;
import com.feilong.lib.org.apache.http.util.EntityUtils;
import com.feilong.net.UncheckedHttpException;

/**
 * {@link HttpResponse} 工具类.
 * 
 * @author feilong
 * @since 1.10.6
 */
public final class HttpResponseUtil{

    /** 默认编码 {@value}. */
    private static final String DEFAULT_CHARSET = UTF8;

    /** Don't let anyone instantiate this class. */
    private HttpResponseUtil(){
        //AssertionError不是必须的. 但它可以避免不小心在类的内部调用构造器. 保证该类在任何情况下都不会被实例化.
        //see 《Effective Java》 2nd
        throw new AssertionError("No " + getClass().getName() + " instances for you!");
    }

    //---------------------------------------------------------------

    /**
     * 从{@link HttpResponse}中提取result 字符串 .
     *
     * @param httpResponse
     *            the http response
     * @return the result string
     */
    public static String getResultString(HttpResponse httpResponse){
        HttpEntity responseEntity = httpResponse.getEntity();

        try{
            return EntityUtils.toString(responseEntity, DEFAULT_CHARSET);
        }catch (ParseException | IOException e){
            throw new UncheckedHttpException(e);
        }
    }
}