package com.tenwa.cgb.util;


import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpStatus;
import org.apache.commons.httpclient.NameValuePair;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.httpclient.params.HttpMethodParams;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * @program: apzl_leasing
 * @author: yjf
 * @create: 2021-07-20 08:43
 **/
public class HttpAssistant {

    private static Log log = LogFactory.getLog(HttpAssistant.class);
    private static final HttpClient httpClient = new HttpClient();

    static {
        httpClient.getHttpConnectionManager().getParams().setConnectionTimeout(10000);
        httpClient.getParams().setParameter(HttpMethodParams.HTTP_CONTENT_CHARSET, "GBK");
    }

    public static String post(String reqUrl, Map<String, Object> paramMap) {
        String result = null;
        PostMethod postMethod = null;
        try {
            postMethod = new PostMethod(reqUrl);
            // 这个basicNameValue**放在List中
            List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
            // 创建basicNameValue***对象参数
            if (paramMap != null) {
                for (Map.Entry<String, Object> entry : paramMap.entrySet()) {
                    nameValuePairs.add(new NameValuePair(entry.getKey(), entry.getValue().toString()));
                }
            }
            // 填入各个表单域的值
            NameValuePair[] param = nameValuePairs.toArray(new NameValuePair[nameValuePairs.size()]);
            postMethod.addParameters(param);
            postMethod.setRequestHeader("Content-type", "application/x-www-form-urlencoded;charset=gbk");
            postMethod.setRequestHeader("Cache-Control", "no-cache");
            // 执行postMethod
            int statusCode = httpClient.executeMethod(postMethod);
            if (statusCode == HttpStatus.SC_OK) {
                result = postMethod.getResponseBodyAsString();
            }
        } catch (IOException e) {
            log.error("执行HTTP Post请求" + reqUrl + "时,发生异常:", e);
        } finally {
            if (postMethod != null) postMethod.releaseConnection();
        }
        return result;
    }

}