http请求工具类（解决utf乱码问题）

最新推荐文章于 2025-05-15 16:00:00 发布

喵喵队摸鲨鱼

最新推荐文章于 2025-05-15 16:00:00 发布

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分类专栏： java 文章标签： http apache 网络协议

原文链接：https://blog.youkuaiyun.com/weixin_40986713/article/details/107604369

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本文介绍了SmartHttpUtil_new类中的sendGet和sendPost方法，用于发送HTTP GET和POST请求，支持参数编码和JSON数据格式。通过实例展示如何发送带有参数和头部的请求，并处理响应结果。

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package com.service.zl.util;

import org.apache.commons.collections.CollectionUtils;
import org.apache.commons.lang.StringUtils;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.NameValuePair;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;

/**
 * @Description:[ HttpUtils ]
 * @Author:
 * @Date: 2019/10/31 9:11
 */
public class SmartHttpUtil_new {
 
    /**
     * 方法描述: 发送get请求
     *
     * @param url
     * @param params
     * @param header
     * @Return {@link String}
     * @throws
     * @date 2020年07月27日 09:10:10
     */
    public static String sendGet(String url, Map<String, String> params, Map<String, String> header,int timeOut) throws Exception {
        HttpGet httpGet = null;
        String body = "";
        try {
            CloseableHttpClient httpClient = HttpClients.createDefault();
            List<String> mapList = new ArrayList<>();
            if (params != null) {
                for (Entry<String, String> entry : params.entrySet()) {
                    mapList.add(entry.getKey() + "=" + entry.getValue());
                }
            }
            if (CollectionUtils.isNotEmpty(mapList)) {
                url = url + "?";
                String paramsStr = StringUtils.join(mapList, "&");
                url = url + paramsStr;
            }

            httpGet = new HttpGet(url);
            RequestConfig requestConfig = RequestConfig.custom()
                    .setConnectTimeout(1000*timeOut).setConnectionRequestTimeout(1000*timeOut)
                    .setSocketTimeout(1000*timeOut).build();
            httpGet.setConfig(requestConfig);
            httpGet.setHeader("Content-type", "application/json; charset=utf-8");
            httpGet.setHeader("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");
            if (header != null) {
                for (Entry<String, String> entry : header.entrySet()) {
                    httpGet.setHeader(entry.getKey(), entry.getValue());
                }
            }
            HttpResponse response = httpClient.execute(httpGet);
 
            int statusCode = response.getStatusLine().getStatusCode();
            if (statusCode != HttpStatus.SC_OK) {
                throw new RuntimeException("请求失败");
            } else {
                body = EntityUtils.toString(response.getEntity(), "UTF-8");
            }
        } catch (Exception e) {
        } finally {
            if (httpGet != null) {
                httpGet.releaseConnection();
            }
        }
        return body;
    }
 
    /**
     * 方法描述: 发送post请求-json数据
     *
     * @param url
     * @param json
     * @param header
     * @Return {@link String}
     * @throws
     * @date 2020年07月27日 09:10:54
     */
    public static String sendPostJson(String url, String json, Map<String, String> header) throws Exception {
        HttpPost httpPost = null;
        String body = "";
        try {
            CloseableHttpClient httpClient = HttpClients.createDefault();
            httpPost = new HttpPost(url);
            httpPost.setHeader("Content-type", "application/json; charset=utf-8");
            httpPost.setHeader("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");
            if (header != null) {
                for (Entry<String, String> entry : header.entrySet()) {
                    httpPost.setHeader(entry.getKey(), entry.getValue());
                }
            }
            StringEntity entity = new StringEntity(json, Charset.forName("UTF-8"));
            entity.setContentEncoding("UTF-8");
            entity.setContentType("application/json");
            httpPost.setEntity(entity);
            HttpResponse response = httpClient.execute(httpPost);
 
            int statusCode = response.getStatusLine().getStatusCode();
            if (statusCode != HttpStatus.SC_OK) {
                throw new RuntimeException("请求失败");
            } else {
                body = EntityUtils.toString(response.getEntity(), "UTF-8");
            }
        } catch (Exception e) {
            throw e;
        } finally {
            if (httpPost != null) {
                httpPost.releaseConnection();
            }
        }
        return body;
    }
 
    /**
     * 方法描述: 发送post请求-form表单数据
     *
     * @param url
     * @param header
     * @Return {@link String}
     * @throws
     * @date 2020年07月27日 09:10:54
     */
    public static String sendPostForm(String url, Map<String, String> params, Map<String, String> header) throws Exception {
        HttpPost httpPost = null;
        String body = "";
        try {
            CloseableHttpClient httpClient = HttpClients.createDefault();
            httpPost = new HttpPost(url);
            httpPost.setHeader("Content-type", "application/x-www-form-urlencoded");
            httpPost.setHeader("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");
            if (header != null) {
                for (Entry<String, String> entry : header.entrySet()) {
                    httpPost.setHeader(entry.getKey(), entry.getValue());
                }
            }
            List<NameValuePair> nvps = new ArrayList<>();
            if (params != null) {
                for (Entry<String, String> entry : params.entrySet()) {
                    nvps.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
                }
            }
            //设置参数到请求对象中
            httpPost.setEntity(new UrlEncodedFormEntity(nvps, "UTF-8"));
            HttpResponse response = httpClient.execute(httpPost);
 
            int statusCode = response.getStatusLine().getStatusCode();
            if (statusCode != HttpStatus.SC_OK) {
                throw new RuntimeException("请求失败");
            } else {
                body = EntityUtils.toString(response.getEntity(), "UTF-8");
            }
        } catch (Exception e) {
            throw e;
        } finally {
            if (httpPost != null) {
                httpPost.releaseConnection();
            }
        }
        return body;
    }
 
}