HttpUtils.java 21.9 KB
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package com.lhcredit.common.utils.http;

import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.*;
import java.net.*;
import java.security.cert.X509Certificate;
import java.text.ParseException;
import java.util.HashMap;
import java.util.Map;
import javax.imageio.ImageIO;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSession;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import lombok.experimental.var;
import org.apache.commons.codec.binary.Base64;
import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
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.BasicHeader;
import org.apache.http.protocol.HTTP;
import org.apache.http.util.EntityUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpMethod;
import org.springframework.http.ResponseEntity;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;
import org.springframework.web.client.RestTemplate;
import org.springframework.web.context.request.WebRequest;

/**
 * 通用http发送方法
 */
public class HttpUtils {
    private static final Logger log = LoggerFactory.getLogger(HttpUtils.class);

    /**
     * 向指定 URL 发送GET方法的请求
     *
     * @param url   发送请求的 URL
     * @param param 请求参数,请求参数应该是 name1=value1&name2=value2 的形式。
     * @return 所代表远程资源的响应结果
     */
    public static String sendGet(String url, String param) {
        StringBuilder result = new StringBuilder();
        BufferedReader in = null;
        try {
            String urlNameString = url + "?" + param;
            log.info("sendGet - {}", urlNameString);
            URL realUrl = new URL(urlNameString);
            URLConnection connection = realUrl.openConnection();
            connection.setRequestProperty("accept", "*/*");
            connection.setRequestProperty("connection", "Keep-Alive");
            connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            connection.setConnectTimeout(10000);
            connection.setReadTimeout(10000);
            connection.connect();
            in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
            String line;
            while ((line = in.readLine()) != null) {
                result.append(line);
            }
            log.info("recv - {}", result);
        } catch (ConnectException e) {
            log.error("调用HttpUtils.sendGet ConnectException, url=" + url + ",param=" + param, e);
        } catch (SocketTimeoutException e) {
            log.error("调用HttpUtils.sendGet SocketTimeoutException, url=" + url + ",param=" + param, e);
        } catch (IOException e) {
            log.error("调用HttpUtils.sendGet IOException, url=" + url + ",param=" + param, e);
        } catch (Exception e) {
            log.error("调用HttpsUtil.sendGet Exception, url=" + url + ",param=" + param, e);
        } finally {
            try {
                if (in != null) {
                    in.close();
                }
            } catch (Exception ex) {
                log.error("调用in.close Exception, url=" + url + ",param=" + param, ex);
            }
        }
        return result.toString();
    }

    /**
     * 向指定 URL 发送POST方法的请求
     *
     * @param url   发送请求的 URL
     * @param param 请求参数,请求参数应该是 name1=value1&name2=value2 的形式。
     * @return 所代表远程资源的响应结果
     */
    public static String sendPost(String url, String param) {
        PrintWriter out = null;
        BufferedReader in = null;
        StringBuilder result = new StringBuilder();
        try {
            String urlNameString = url + "?" + param;
            log.info("sendPost - {}", urlNameString);
            URL realUrl = new URL(urlNameString);
            URLConnection conn = realUrl.openConnection();
            conn.setRequestProperty("accept", "*/*");
            conn.setRequestProperty("connection", "Keep-Alive");
            conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            conn.setRequestProperty("Accept-Charset", "utf-8");
            conn.setRequestProperty("contentType", "utf-8");
            conn.setDoOutput(true);
            conn.setDoInput(true);
            out = new PrintWriter(conn.getOutputStream());
            out.print(param);
            out.flush();
            in = new BufferedReader(new InputStreamReader(conn.getInputStream(), "utf-8"));
            String line;
            while ((line = in.readLine()) != null) {
                result.append(line);
            }
            log.info("recv - {}", result);
        } catch (ConnectException e) {
            log.error("调用HttpUtils.sendPost ConnectException, url=" + url + ",param=" + param, e);
        } catch (SocketTimeoutException e) {
            log.error("调用HttpUtils.sendPost SocketTimeoutException, url=" + url + ",param=" + param, e);
        } catch (IOException e) {
            log.error("调用HttpUtils.sendPost IOException, url=" + url + ",param=" + param, e);
        } catch (Exception e) {
            log.error("调用HttpsUtil.sendPost Exception, url=" + url + ",param=" + param, e);
        } finally {
            try {
                if (out != null) {
                    out.close();
                }
                if (in != null) {
                    in.close();
                }
            } catch (IOException ex) {
                log.error("调用in.close Exception, url=" + url + ",param=" + param, ex);
            }
        }
        return result.toString();
    }

    /**
     * 向htpps URL 发送POST方法的请求
     *
     * @param url
     * @param param
     * @return
     */
    public static String sendSSLPost(String url, String param) {
        StringBuilder result = new StringBuilder();
        String urlNameString = url + "?" + param;
        try {
            log.info("sendSSLPost - {}", urlNameString);
            SSLContext sc = SSLContext.getInstance("SSL");
            sc.init(null, new TrustManager[]{new TrustAnyTrustManager()}, new java.security.SecureRandom());
            URL console = new URL(urlNameString);
            HttpsURLConnection conn = (HttpsURLConnection) console.openConnection();
            conn.setRequestProperty("accept", "*/*");
            conn.setRequestProperty("connection", "Keep-Alive");
            conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            conn.setRequestProperty("Accept-Charset", "utf-8");
            conn.setRequestProperty("contentType", "utf-8");
            conn.setDoOutput(true);
            conn.setDoInput(true);

            conn.setSSLSocketFactory(sc.getSocketFactory());
            conn.setHostnameVerifier(new TrustAnyHostnameVerifier());
            conn.connect();
            InputStream is = conn.getInputStream();
            BufferedReader br = new BufferedReader(new InputStreamReader(is));
            String ret = "";
            while ((ret = br.readLine()) != null) {
                if (ret != null && !ret.trim().equals("")) {
                    result.append(new String(ret.getBytes("ISO-8859-1"), "utf-8"));
                }
            }
            log.info("recv - {}", result);
            conn.disconnect();
            br.close();
        } catch (ConnectException e) {
            log.error("调用HttpUtils.sendSSLPost ConnectException, url=" + url + ",param=" + param, e);
        } catch (SocketTimeoutException e) {
            log.error("调用HttpUtils.sendSSLPost SocketTimeoutException, url=" + url + ",param=" + param, e);
        } catch (IOException e) {
            log.error("调用HttpUtils.sendSSLPost IOException, url=" + url + ",param=" + param, e);
        } catch (Exception e) {
            log.error("调用HttpsUtil.sendSSLPost Exception, url=" + url + ",param=" + param, e);
        }
        return result.toString();
    }

    /**
     * urlEncode编码
     *
     * @param content
     * @return
     */
    public static String urlEncode(String content) {
        try {
            return URLEncoder.encode(content, "utf-8");
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
        return null;
    }

    /**
     * urlDecode解码
     *
     * @param content
     * @return
     */
    public static String urlDecode(String content) {
        try {
            return URLDecoder.decode(content, "utf-8");
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
        return null;
    }

    /**
     * 证书信任管理器类
     */
    private static class TrustAnyTrustManager implements X509TrustManager {
        @Override
        public void checkClientTrusted(X509Certificate[] chain, String authType) {
        }

        @Override
        public void checkServerTrusted(X509Certificate[] chain, String authType) {
        }

        @Override
        public X509Certificate[] getAcceptedIssuers() {
            return new X509Certificate[]{};
        }
    }

    private static class TrustAnyHostnameVerifier implements HostnameVerifier {
        @Override
        public boolean verify(String hostname, SSLSession session) {
            return true;
        }
    }

    public static String send(String url, JSONArray jsonObject, String encoding) {
        String body = "";

        //创建httpclient对象
        CloseableHttpClient client = HttpClients.createDefault();
        //创建post方式请求对象
        HttpPost httpPost = new HttpPost(url);

        //装填参数
        StringEntity s = new StringEntity(jsonObject.toString(), "utf-8");
        s.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE,
                "application/json"));
        //设置参数到请求对象中
        httpPost.setEntity(s);
//        System.out.println("请求地址:"+url);
//        System.out.println("请求参数:"+nvps.toString());

        //设置header信息
        //指定报文头【Content-type】、【User-Agent】
//        httpPost.setHeader("Content-type", "application/x-www-form-urlencoded");
        httpPost.setHeader("Content-type", "application/json");
        httpPost.setHeader("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");

        //执行请求操作,并拿到结果(同步阻塞)
        CloseableHttpResponse response = null;
        try {
            response = client.execute(httpPost);
        } catch (IOException e) {
            e.printStackTrace();
        }
        //获取结果实体
        HttpEntity entity = response.getEntity();
        if (entity != null) {
            //按指定编码转换结果实体为String类型
            try {
                body = EntityUtils.toString(entity, encoding);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        try {
            EntityUtils.consume(entity);
        } catch (IOException e) {
            e.printStackTrace();
        }
        //释放链接
        try {
            response.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return body;
    }


//    public static void main(String[] args) {
//        JSONArray jsonArray=new JSONArray();
//
//        JSONObject j=new JSONObject();
//        j.put("proCode","ddd");
//        j.put("orgName","ddd");
//        jsonArray.add(j);
//        try {
//            send("http://192.168.4.205:8081/web/taskMain/addTaskMain",jsonArray,"utf-8");
//        } catch (ParseException e) {
//            e.printStackTrace();
//        } catch (IOException e) {
//            e.printStackTrace();
//        }
//    }

    public static String post(String qrcodeUrl,String access_token, String page, String scene, Integer width) {
       // String qrcodeUrl = "https://api.weixin.qq.com/wxa/getwxacodeunlimit";  // 获取小程序码的接口头部
        String url = qrcodeUrl+"?access_token="+access_token;  // 拼接完整的URl
        Map<String, Object> requestParam = new HashMap<String,Object>();  // 小程序的参数可查看官方文档
        if(page!= null) requestParam.put("page", page);  // 扫码后需要跳转的页面
        if(scene!= null) requestParam.put("scene", scene);  // 携带的参数
        if(width!= null) requestParam.put("width", width);  // 二维码的宽度
        String param = JSON.toJSONString(requestParam);

        // 使用 RestTemplate 出现的问题,用该类代码会更简洁
        // rest debugger发过来的content-type为application/json,而jq的多了charset=utf-8
        // Could not read document: Invalid UTF-8 middle byte 0xff
	/*JSONObject jsonObject =
			restTemplate.postForObject(url, param, JSONObject.class);
	System.out.println(jsonObject.toJSONString());*/

        HttpURLConnection conn = null;
        BufferedReader bufferedReader = null;
        PrintWriter out = null;
        InputStream in = null;
        ByteArrayOutputStream bos = null;
        String base64String = "";
        try {
            URL realUrl = new URL(url);
            // 打开和URL之间的连接
            conn = (HttpURLConnection) realUrl.openConnection();
            // 设置通用的请求属性
            conn.setRequestProperty("accept", "*/*");
            conn.setRequestProperty("connection", "Keep-Alive");
            conn.setRequestProperty("Accept-Charset", "UTF-8");
            conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            // 超时设置,防止 网络异常的情况下,可能会导致程序僵死而不继续往下执行
            conn.setConnectTimeout(3000);
            conn.setReadTimeout(3000);
            // 发送POST请求必须设置如下两行
            conn.setDoOutput(true);
            conn.setDoInput(true);
            // 获取URLConnection对象对应的输出流
            out = new PrintWriter(conn.getOutputStream());
            // 发送请求参数
            out.print(param);
            // flush输出流的缓冲
            out.flush();

            in = conn.getInputStream();  // 得到图片的二进制内容
            int leng = in.available();  // 获取二进制流的长度,该方法不准确
            if(leng < 1000){  // 出现错误时,获取字符长度就一百不到,图片的话有几万的长度
                // 定义BufferedReader输入流来读取URL的响应
                bufferedReader = new BufferedReader(new InputStreamReader(conn.getInputStream(), "UTF-8"));
                String line;
                String result = "";
                while ((line = bufferedReader.readLine()) != null) {
                    result += line;
                }
                // 清空 access_token 缓存
//                CacheManagerImpl cacheManagerImpl = CacheManagerImpl.getInstance();
//                cacheManagerImpl.clearByKey("access_token");
                return result;
            }

            // 修改图片的分辨率,分辨率太大打印纸不够大
            //BufferedInputStream in2 = new BufferedInputStream(conn.getInputStream());
            // 将文件二进制流修改为图片流
            Image srcImg = ImageIO.read(in);
            // 构建图片流
            BufferedImage buffImg = new BufferedImage(width, width, BufferedImage.TYPE_INT_RGB);
            //绘制改变尺寸后的图
            buffImg.getGraphics().drawImage(srcImg.getScaledInstance(width, width, Image.SCALE_SMOOTH), 0, 0, null);
            // 将图片流修改为文件二进制流
            ByteArrayOutputStream os = new ByteArrayOutputStream();
            ImageIO.write(buffImg, "png", os);
            in = new ByteArrayInputStream(os.toByteArray());
            // 刷新,将重置为类似于首次创建时的状态
            buffImg.flush();
            srcImg.flush();
            // 设null是告诉jvm此资源可以回收
            buffImg = null;  // 该io流不存在关闭函数
            srcImg = null;  // 该io流不存在关闭函数
            os.close();

            bos = new ByteArrayOutputStream();
            byte[] b1 = new byte[1024];
            int len = -1;
            while((len = in.read(b1)) != -1) {
                bos.write(b1, 0, len);
            }
            byte[] fileByte = bos.toByteArray();  // 转换为字节数组,方便转换成base64编码

            //BASE64Encoder encoder = new BASE64Encoder();   // import sun.misc.BASE64Encoder;  该类包为内部专用以后可能会删除,sun公司
            // 对字节数组转换成Base64字符串
            //base64String = encoder.encode(fileByte);

            base64String = Base64.encodeBase64String(fileByte);  // import org.apache.commons.codec.binary.Base64;
        } catch (Exception e) {
        }
        //使用finally块来关闭输出流、输入流
        finally{
            try {
                if(bufferedReader != null){
                    bufferedReader.close();
                }
                if(out!=null){
                    out.close();
                }
                if(in!=null){
                    in.close();
                }
                if(bos != null){
                    bos.close();
                }
                if(conn !=null){
                    conn.disconnect();
                    conn = null;
                }
                //让系统回收资源,但不一定是回收刚才设成null的资源,可能是回收其他没用的资源。
                System.gc();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

        return base64String;  // 将base64格式的图片发送到前端
    }

    /**
     * 向指定 URL 发送GET方法的请求
     *
     * @param url 发送请求的 URL
     * @return 所代表远程资源的响应结果
     */
    public static String sendGetFromDNA(String url) {
        StringBuilder result = new StringBuilder();
        BufferedReader in = null;
        try {
            String urlNameString = url+"&key=xygj";
//            log.info("sendGet - {}", urlNameString);
            URL realUrl = new URL(urlNameString);
            URLConnection connection = realUrl.openConnection();

            connection.setRequestProperty("accept", "*/*");
//            connection.setRequestProperty("Token", cstToken);
            connection.setRequestProperty("Token", "f21bcdd7-90a7-4d39-9bed-56bed670314a");
            connection.setRequestProperty("connection", "Keep-Alive");
            connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
//            connection.setRequestProperty("Authorization", LhcreditConfig.getToken());
            connection.connect();
            in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
            String line;
            while ((line = in.readLine()) != null) {
                result.append(line);
            }
//            log.info("recv - {}", result);
        } catch (ConnectException e) {
            log.error("调用HttpUtils.sendGet ConnectException, url=" + url, e);
        } catch (SocketTimeoutException e) {
            log.error("调用HttpUtils.sendGet SocketTimeoutException, url=" + url, e);
        } catch (IOException e) {
            log.error("调用HttpUtils.sendGet IOException, url=" + url, e);
        } catch (Exception e) {
            log.error("调用HttpsUtil.sendGet Exception, url=" + url, e);
        } finally {
            try {
                if (in != null) {
                    in.close();
                }
            } catch (Exception ex) {
                log.error("调用in.close Exception, url=" + url, ex);
            }
        }
        return result.toString();
    }


    public static String sendGet(String url,String param,String token) {
        StringBuilder result = new StringBuilder();
        BufferedReader in = null;
        try {
            String urlNameString = url+"?"+param;
            log.info("sendGet - {}", urlNameString);
            URL realUrl = new URL(urlNameString);
            URLConnection connection = realUrl.openConnection();
            connection.setRequestProperty("accept", "*/*");
            connection.setRequestProperty("Token", token);
            connection.setRequestProperty("connection", "Keep-Alive");
            connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
//            connection.setRequestProperty("Accept-Charset", "utf-8");
//            connection.setRequestProperty("contentType", "utf-8");
            connection.connect();
            in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
            String line;
            while ((line = in.readLine()) != null) {
                result.append(line);
            }
            log.info("recv - {}", result);
        } catch (ConnectException e) {
            log.error("调用HttpUtils.sendGet ConnectException, url=" + url, e);
        } catch (SocketTimeoutException e) {
            log.error("调用HttpUtils.sendGet SocketTimeoutException, url=" + url, e);
        } catch (IOException e) {
            log.error("调用HttpUtils.sendGet IOException, url=" + url, e);
        } catch (Exception e) {
            log.error("调用HttpsUtil.sendGet Exception, url=" + url, e);
        } finally {
            try {
                if (in != null) {
                    in.close();
                }
            } catch (Exception ex) {
                log.error("调用in.close Exception, url=" + url, ex);
            }
        }
        return result.toString();
    }
}