HTTP请求处理 get/post工具类 验证网络DEMO

简介: HTTP请求处理 get/post工具类 验证网络DEMO

HTTP请求处理 get/post工具类 验证网络DEMO

package com.aostar.ida.framework.util;
import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.nio.charset.Charset;
import java.util.Iterator;
import java.util.Map;
import org.apache.commons.lang.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import oracle.net.aso.p;
/**
 * * HTTP请求处理 get/post
 * 
 * @author 
 *
 */
public class HttpUtilYan {
    private final static Logger logger = LoggerFactory.getLogger(HttpUtils.class);
    private static final Charset UTF_8 = Charset.forName("UTF-8");
    public static final String POST = "POST";
    public static final String GET = "GET";
    public static final int TIMEOUT = 30000;
    public static final int FILE_TIMEOUT = 300000;
    // boundary就是request头和上传文件内容的分隔符
    public static final String BOUNDARY = "---------------------------123821742118716";
    public static final String RESULT_FILE = "attachment";
    // Http Get请求
    //
    /**
     * * 发送HTTP请求
     * 
     * @param serverUrl
     * @param params
     * @return
     */
    public static String getHttp(String serverUrl, Map<String, String> params) {
        return getHttp(serverUrl, params, null, TIMEOUT);
    }
    /**
     * * 发送HTTP请求
     * 
     * @param serverUrl
     * @param params
     * @return
     */
    public static String getHttp(String serverUrl, Map<String, String> params, Map<String, String> headers) {
        return getHttp(serverUrl, params, headers, TIMEOUT);
    }
    /**
     * 发送HTTP请求
     * 
     * @param serverUrl
     * @param method
     * @param params
     * @param timeout
     * @return
     */
    public static String getHttp(String serverUrl, Map<String, String> params, Map<String, String> headers,
            Integer time) {
        logger.info("\n【请求地址】: {} \n【请求参数】: {} \n【请求头部】: {}", serverUrl, params, headers);
        HttpURLConnection conn = null;
        BufferedReader br = null;
        try {
            // 构建请求参数
            StringBuilder sbParam = new StringBuilder(serverUrl);
            if (mapIsNotEmpty(params)) {
                sbParam.append("?");
                if (mapIsNotEmpty(params)) {
                    for (Map.Entry<String, String> entry : params.entrySet()) {
                        sbParam.append(URLEncoder.encode(entry.getKey(), "UTF-8"));
                        sbParam.append("=");
                        sbParam.append(URLEncoder.encode(entry.getValue(), "UTF-8"));
                        sbParam.append("&");
                    }
                }
            }
            // 发送请求
            URL url = new URL(sbParam.toString());
            conn = (HttpURLConnection) url.openConnection();
            conn.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");
            conn.setRequestMethod(GET);
            conn.setUseCaches(false);
            conn.setDoOutput(true);
            conn.setReadTimeout(time);
            conn.setConnectTimeout(time);
            if (mapIsNotEmpty(headers)) {
                for (Map.Entry<String, String> entry : headers.entrySet()) {
                    conn.setRequestProperty(entry.getKey(), entry.getValue());
                }
            }
            logger.info("[HttpsUtls] [getHttp] connection success");
            // 获取状态码
            int responseCode = conn.getResponseCode();
            if (responseCode != HttpURLConnection.HTTP_OK) {
                logger.error("[HttpsUtls] [getHttp] response status = {}", responseCode);
                return StringUtils.EMPTY;
            }
            // 取得返回信息
            br = new BufferedReader(new InputStreamReader(conn.getInputStream(), UTF_8));
            String line;
            StringBuilder result = new StringBuilder();
            while ((line = br.readLine()) != null) {
                result.append(line);
            }
            logger.info("\n【响应数据】: {} ", result);
            // JSON处理
            return result.toString();
        } catch (Exception e) {
            logger.error("[HttpsUtls] [getHttp Exception", e);
        } finally {
            if (br != null) {
                try {
                    br.close();
                } catch (Exception e) {
                    logger.error("[HttpsUtls] [getHttp] br.close is exception. {}", e);
                }
            }
            if (conn != null) {
                try {
                    conn.disconnect();
                } catch (Exception e) {
                    logger.error("[HttpsUtls] [getHttp] conn.disconnect() is exception. {}", e);
                }
            }
        }
        return StringUtils.EMPTY;
    }
    // HTTP POST请求
    ///
    /**
     * POST 请求
     * 
     * @param serverUrl
     * @param params
     * @return
     */
    public static String postHttp(String serverUrl, Map<String, String> params) {
        return postHttp(serverUrl, params, null);
    }
    /**
     * POST 请求
     * 
     * @param serverUrl
     * @param params
     * @param headers
     * @return
     */
    public static String postHttp(String serverUrl, Map<String, String> params, Map<String, String> headers) {
        return postHttp(serverUrl, params, headers, POST, TIMEOUT);
    }
    /**
     * 发送HTTP请求
     * 
     * @param serverUrl
     * @param method
     * @param params
     * @param timeout
     * @return
     */
    public static String postHttp(String serverUrl, Map<String, String> params, Map<String, String> headers,
            String type, int timeout) {
        logger.info("\n【请求地址】: {} \n【请求参数】: {} \n【请求头部】: {}", serverUrl, params, headers);
        HttpURLConnection conn = null;
        OutputStreamWriter osw = null;
        BufferedReader br = null;
        try {
            // 发送请求
            URL url = new URL(serverUrl);
            conn = (HttpURLConnection) url.openConnection();
            conn.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");
            conn.setRequestMethod(type);
            conn.setUseCaches(false);
            conn.setDoOutput(true);
            conn.setReadTimeout(timeout);
            conn.setConnectTimeout(timeout);
            if (mapIsNotEmpty(headers)) {
                for (Map.Entry<String, String> entry : headers.entrySet()) {
                    conn.setRequestProperty(entry.getKey(), entry.getValue());
                }
            }
            // 构建请求参数
            StringBuilder sbParam = new StringBuilder();
            if (mapIsNotEmpty(params)) {
                for (Map.Entry<String, String> entry : params.entrySet()) {
                    sbParam.append(entry.getKey());
                    sbParam.append("=");
                    sbParam.append(entry.getValue());
                    sbParam.append("&");
                }
            }
            // 获得输出流
            osw = new OutputStreamWriter(conn.getOutputStream(), UTF_8);
            osw.write(sbParam.toString());
            osw.flush();
            osw.close();
            logger.info("[HttpsUtls][postHttp] connection success.");
            // 获取状态码
            int responseCode = conn.getResponseCode();
            if (responseCode != HttpURLConnection.HTTP_OK) {
                logger.error("[HttpsUtls][postHttp] response status = {}", responseCode);
                return StringUtils.EMPTY;
            }
            // 取得返回信息
            br = new BufferedReader(new InputStreamReader(conn.getInputStream(), UTF_8));
            String line;
            StringBuilder result = new StringBuilder();
            while ((line = br.readLine()) != null) {
                result.append(line);
            }
            logger.info("\n【响应数据】: {} ", result);
            // JSON处理
            return result.toString();
        } catch (Exception e) {
            logger.error("[HttpsUtls][postHttp] Exception", e);
        } finally {
            if (osw != null) {
                try {
                    osw.close();
                } catch (Exception e) {
                    logger.error("[HttpsUtls][postHttp] osw.close() is Exception. {}", e);
                }
            }
            if (br != null) {
                try {
                    br.close();
                } catch (Exception e) {
                    logger.error("[HttpsUtls][postHttp] br.close() is Exception. {}", e);
                }
            }
            if (conn != null) {
                try {
                    conn.disconnect();
                } catch (Exception e) {
                    logger.error("[HttpsUtls][postHttp] conn.disconnect() is Exception. {}", e);
                }
            }
        }
        return StringUtils.EMPTY;
    }
    // HTTP 推送JSON格式
    ///
    /**
     * Post 请求 格式为 application/json
     * 
     * @param serverUrl
     * @param urlParams
     * @param headers
     * @param jsonParam
     * @return
     */
    public static String postJson(String serverUrl, Map<String, String> urlParams, Map<String, String> headers,
            String jsonParam) {
        logger.info("\n【请求地址】: {} \n【请求参数】: {} \n【请求头部】: {}\n【请求JSON】: {}", serverUrl, urlParams, headers, jsonParam);
        HttpURLConnection conn = null;
        OutputStreamWriter osw = null;
        BufferedReader br = null;
        try {
            // 构建请求参数
            StringBuilder sbParam = new StringBuilder(serverUrl);
            if (mapIsNotEmpty(urlParams)) {
                sbParam.append("?");
                if (mapIsNotEmpty(urlParams)) {
                    for (Map.Entry<String, String> entry : urlParams.entrySet()) {
                        sbParam.append(URLEncoder.encode(entry.getKey(), "UTF-8"));
                        sbParam.append("=");
                        sbParam.append(URLEncoder.encode(entry.getValue(), "UTF-8"));
                        sbParam.append("&");
                    }
                }
            }
            // 发送请求
            URL url = new URL(sbParam.toString());
            conn = (HttpURLConnection) url.openConnection();
            conn.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");
            if (mapIsNotEmpty(headers)) {
                for (Map.Entry<String, String> entry : headers.entrySet()) {
                    conn.setRequestProperty(entry.getKey(), entry.getValue());
                }
            }
            conn.setRequestMethod(POST);
            conn.setUseCaches(false);
            conn.setDoOutput(true);
            conn.setReadTimeout(TIMEOUT);
            conn.setConnectTimeout(TIMEOUT);
            // 设置文件类型:
            conn.setRequestProperty("Content-Type", "application/json; charset=UTF-8");
            // 设置接收类型否则返回415错误
            conn.setRequestProperty("accept", "application/json");
            // 往服务器里面发送数据
            if (jsonParam != null) {
                byte[] writebytes = jsonParam.getBytes();
                // 设置文件长度
                conn.setRequestProperty("Content-Length", String.valueOf(writebytes.length));
            }
            // 获得输出流
            osw = new OutputStreamWriter(conn.getOutputStream(), UTF_8);
            osw.write(jsonParam);
            osw.flush();
            osw.close();
            logger.info("[HttpsUtls][postJson] connection success.");
            // 构建请求参数
            sbParam = new StringBuilder();
            int responseCode = conn.getResponseCode();
            if (responseCode != HttpURLConnection.HTTP_OK) {
                logger.error("[HttpsUtls][postJson] responseCode:{}", responseCode);
                return StringUtils.EMPTY;
            }
            // 取得返回信息
            br = new BufferedReader(new InputStreamReader(conn.getInputStream(), UTF_8));
            String line;
            StringBuilder result = new StringBuilder();
            while ((line = br.readLine()) != null) {
                result.append(line);
            }
            logger.info("\n【响应数据】: {} ", result);
            // JSON处理
            return result.toString();
        } catch (Exception e) {
            logger.error("[HttpsUtls][postJson] Exception", e);
        } finally {
            if (osw != null) {
                try {
                    osw.close();
                } catch (Exception e) {
                    logger.error("[HttpsUtls][postJson] osw.close() is Exception. {}", e);
                }
            }
            if (br != null) {
                try {
                    br.close();
                } catch (Exception e) {
                    logger.error("[HttpsUtls][postJson] br.close() is Exception. {}", e);
                }
            }
            if (conn != null) {
                try {
                    conn.disconnect();
                } catch (Exception e) {
                    logger.error("[HttpsUtls][postJson] conn.disconnect() is Exception. {}", e);
                }
            }
        }
        return StringUtils.EMPTY;
    }
    /**
     * post 请求 格式为 text/plain
     * 
     * @param serverUrl
     * @param urlParams
     * @param headers
     * @param jsonParam
     * @return
     */
    public static String postText(String serverUrl, Map<String, String> urlParams, Map<String, String> headers,
            String jsonParam) {
        logger.info("\n【请求地址】: {} \n【请求参数】: {} \n【请求头部】: {}\n【请求JSON】: {}", serverUrl, urlParams, headers, jsonParam);
        HttpURLConnection conn = null;
        OutputStreamWriter osw = null;
        BufferedReader br = null;
        try {
            // 构建请求参数
            StringBuilder sbParam = new StringBuilder(serverUrl);
            if (mapIsNotEmpty(urlParams)) {
                sbParam.append("?");
                if (mapIsNotEmpty(urlParams)) {
                    for (Map.Entry<String, String> entry : urlParams.entrySet()) {
                        sbParam.append(URLEncoder.encode(entry.getKey(), "UTF-8"));
                        sbParam.append("=");
                        sbParam.append(URLEncoder.encode(entry.getValue(), "UTF-8"));
                        sbParam.append("&");
                    }
                }
            }
            // 发送请求
            URL url = new URL(sbParam.toString());
            conn = (HttpURLConnection) url.openConnection();
            conn.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");
            if (mapIsNotEmpty(headers)) {
                for (Map.Entry<String, String> entry : headers.entrySet()) {
                    conn.setRequestProperty(entry.getKey(), entry.getValue());
                }
            }
            conn.setRequestMethod(POST);
            conn.setUseCaches(false);
            conn.setDoOutput(true);
            conn.setReadTimeout(TIMEOUT);
            conn.setConnectTimeout(TIMEOUT);
            // 设置文件类型:
            conn.setRequestProperty("Content-Type", "text/plain; charset=UTF-8");
            // 设置接收类型否则返回415错误
            conn.setRequestProperty("accept", "application/json");
            // 往服务器里面发送数据
            if (jsonParam != null) {
                byte[] writebytes = jsonParam.getBytes();
                // 设置文件长度
                conn.setRequestProperty("Content-Length", String.valueOf(writebytes.length));
            }
            // 获得输出流
            osw = new OutputStreamWriter(conn.getOutputStream(), UTF_8);
            osw.write(jsonParam);
            osw.flush();
            osw.close();
            logger.info("[HttpsUtls][postText] connection success.");
            // 构建请求参数
            sbParam = new StringBuilder();
            int responseCode = conn.getResponseCode();
            if (responseCode != HttpURLConnection.HTTP_OK) {
                logger.error("[HttpsUtls][postText] responseCode:{}", responseCode);
                return StringUtils.EMPTY;
            }
            // 取得返回信息
            br = new BufferedReader(new InputStreamReader(conn.getInputStream(), UTF_8));
            String line;
            StringBuilder result = new StringBuilder();
            while ((line = br.readLine()) != null) {
                result.append(line);
            }
            logger.info("\n【响应数据】: {} ", result);
            // JSON处理
            return result.toString();
        } catch (Exception e) {
            logger.error("[HttpsUtls][postText] Exception", e);
        } finally {
            if (osw != null) {
                try {
                    osw.close();
                } catch (Exception e) {
                    logger.error("[HttpsUtls][postText] osw.close() is Exception. {}", e);
                }
            }
            if (br != null) {
                try {
                    br.close();
                } catch (Exception e) {
                    logger.error("[HttpsUtls][postText] br.close() is Exception. {}", e);
                }
            }
            if (conn != null) {
                try {
                    conn.disconnect();
                } catch (Exception e) {
                    logger.error("[HttpsUtls][postText] conn.disconnect() is Exception. {}", e);
                }
            }
        }
        return StringUtils.EMPTY;
    }
    /**
     * * 上传多个文件
     * 
     * @param urlStr
     * @param urlParams
     * @param fileMap
     * @return
     */
    public static String formUpload(String urlStr, Map<String, String> urlParams, Map<String, String> fileMap) {
        if (mapIsEmpty(fileMap)) {
            logger.info("\n【请求地址】: {} \n【请求参数】: {} ", urlStr, urlParams);
        } else {
            logger.info("\n【请求地址】: {} \n【请求参数】: {} \n【请求文件】: {}", urlStr, urlParams, fileMap);
        }
        String res = "";
        HttpURLConnection conn = null;
        DataInputStream in = null;
        try {
            URL url = new URL(urlStr);
            conn = (HttpURLConnection) url.openConnection();
            conn.setConnectTimeout(FILE_TIMEOUT);
            conn.setReadTimeout(FILE_TIMEOUT);
            conn.setDoOutput(true);
            conn.setDoInput(true);
            conn.setUseCaches(false);
            conn.setRequestMethod("POST");
            conn.setRequestProperty("Connection", "Keep-Alive");
            conn.setRequestProperty("User-Agent", "Mozilla/5.0 (Windows; U; Windows NT 6.1; zh-CN; rv:1.9.2.6)");
            conn.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + BOUNDARY);
            OutputStream out = new DataOutputStream(conn.getOutputStream());
            // urlParams
            if (urlParams != null) {
                StringBuilder strBuf = new StringBuilder();
                Iterator<Map.Entry<String, String>> iter = urlParams.entrySet().iterator();
                while (iter.hasNext()) {
                    Map.Entry<String, String> entry = iter.next();
                    String inputName = entry.getKey();
                    String inputValue = entry.getValue();
                    if (inputValue == null) {
                        continue;
                    }
                    strBuf.append("\r\n").append("--").append(BOUNDARY).append("\r\n");
                    strBuf.append("Content-Disposition: form-data; name=\"" + inputName + "\"\r\n\r\n");
                    strBuf.append(inputValue);
                }
                out.write(strBuf.toString().getBytes());
            }
            // file
            if (fileMap != null) {
                Iterator<Map.Entry<String, String>> iter = fileMap.entrySet().iterator();
                while (iter.hasNext()) {
                    Map.Entry<String, String> entry = iter.next();
                    String inputName = entry.getKey();
                    String inputValue = entry.getValue();
                    if (inputValue == null) {
                        continue;
                    }
                    File file = new File(inputValue);
                    if (!file.exists()) {
                        logger.error("[HttpsUtls][formUpload] file is not exist. name = {}", inputValue);
                        return res;
                    }
                    String filename = file.getName();
                    StringBuilder strBuf = new StringBuilder();
                    strBuf.append("\r\n").append("--").append(BOUNDARY).append("\r\n");
                    strBuf.append("Content-Disposition: form-data; name=\"" + inputName + "\"; filename=\"" + filename
                            + "\"\r\n");
                    strBuf.append("Content-Type:" + "multipart/form-data;boundary=" + "*****" + "\r\n\r\n");
                    out.write(strBuf.toString().getBytes());
                    in = new DataInputStream(new FileInputStream(file));
                    int bytes = 0;
                    byte[] bufferOut = new byte[1024];
                    while ((bytes = in.read(bufferOut)) != -1) {
                        out.write(bufferOut, 0, bytes);
                    }
                    in.close();
                }
            }
            byte[] endData = ("\r\n--" + BOUNDARY + "--\r\n").getBytes();
            out.write(endData);
            out.flush();
            out.close();
            // 读取返回数据
            StringBuilder strBuf = new StringBuilder();
            BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
            String line = null;
            while ((line = reader.readLine()) != null) {
                strBuf.append(line);
            }
            res = strBuf.toString();
            reader.close();
            reader = null;
        } catch (Exception e) {
            logger.error("[HttpsUtls][formUpload] is Exception. {}", e);
        } finally {
            if (conn != null) {
                conn.disconnect();
                conn = null;
            }
            if (in != null) {
                try {
                    in.close();
                } catch (Exception e) {
                    logger.error("[HttpsUtls][formUpload] in.close is Exception. {}", e);
                }
            }
        }
        logger.info("\n【响应数据】: {} ", res);
        return res;
    }
    /**
     * * 通过url下载单个文件
     * 
     * @param downloadUrl
     * @param urlParams
     * @param maxSize
     * @param folder
     * @param filePath
     * @return
     */
    public static String downloadFile(String serverUrl, Map<String, String> params, String folder, String filePath) {
        logger.info("\n【请求地址】: {} \n【请求参数】: {} ", serverUrl, params);
        HttpURLConnection conn = null;
        InputStream in = null;
        FileOutputStream os = null;
        try {
            // 构建请求参数
            StringBuilder sbParam = new StringBuilder(serverUrl);
            if (mapIsNotEmpty(params)) {
                sbParam.append("?");
                if (mapIsNotEmpty(params)) {
                    for (Map.Entry<String, String> entry : params.entrySet()) {
                        sbParam.append(URLEncoder.encode(entry.getKey(), "UTF-8"));
                        sbParam.append("=");
                        sbParam.append(URLEncoder.encode(entry.getValue(), "UTF-8"));
                        sbParam.append("&");
                    }
                }
            }
            // 发送请求
            URL url = new URL(sbParam.toString());
            conn = (HttpURLConnection) url.openConnection();
            conn.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");
            conn.setRequestMethod(GET);
            conn.setUseCaches(false);
            conn.setDoOutput(true);
            conn.setReadTimeout(TIMEOUT);
            conn.setConnectTimeout(TIMEOUT);
            int responseCode = conn.getResponseCode();
            if (responseCode != HttpURLConnection.HTTP_OK) {
                logger.error("[HttpsUtls][downloadFile] responseCode:{}", responseCode);
                return StringUtils.EMPTY;
            }
            boolean resultIsFile = parseIsFile(conn);
            // 返回不是文件流,则返回字符串
            if (!resultIsFile) {
                // 读取返回数据
                StringBuilder strBuf = new StringBuilder();
                BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
                String line = null;
                while ((line = reader.readLine()) != null) {
                    strBuf.append(line);
                }
                reader.close();
                reader = null;
                logger.info("\n【响应数据】: {} ", strBuf);
                return strBuf.toString();
            }
            // 返回文件流
            File targetFile = new File(folder, filePath);
            in = conn.getInputStream();
            os = new FileOutputStream(targetFile);
            byte[] buffer = new byte[4 * 1024];
            int read;
            while ((read = in.read(buffer)) > -1) {
                os.write(buffer, 0, read);
            }
            os.flush();
            return filePath;
        } catch (Exception e) {
            logger.error("[HttpsUtls][downloadFile] Exception", e);
            return StringUtils.EMPTY;
        } finally {
            if (in != null) {
                try {
                    in.close();
                } catch (Exception e) {
                    logger.error("[HttpsUtls] [downloadFile] in.close is exception. {}", e);
                }
            }
            if (os != null) {
                try {
                    os.close();
                } catch (Exception e) {
                    logger.error("[HttpsUtls] [downloadFile] os.close is exception. {}", e);
                }
            }
            if (conn != null) {
                try {
                    conn.disconnect();
                } catch (Exception e) {
                    logger.error("[HttpsUtls] [downloadFile] conn.disconnect is exception. {}", e);
                }
            }
        }
    }
    // 通用
    // /
    /**
     * * 是否是文件
     * 
     * @param conn
     * @return
     */
    private static boolean parseIsFile(HttpURLConnection conn) {
        String isFile = conn.getHeaderField("Content-Disposition");
        if (StringUtils.isEmpty(isFile)) {
            return false;
        }
        return StringUtils.contains(isFile, RESULT_FILE);
    }
    /**
     * 判断Map是否不为空
     * 
     * @param m
     * @return
     */
    public static boolean mapIsNotEmpty(Map<?, ?> m) {
        return !mapIsEmpty(m);
    }
    /**
     * 判断Map是否为空
     * 
     * @param m
     * @return
     */
    public static boolean mapIsEmpty(Map<?, ?> m) {
        return m == null || m.isEmpty();
    }
    /**
     * 测试http地址是否通畅  
     * @param url
     * @return
     */
    public static boolean isOk(String url) {
        if(StringUtils.isEmpty(url)) return false;
        try {
            URL netUrl = new URL(url);
            HttpURLConnection connection = (HttpURLConnection) netUrl.openConnection();
            connection.setConnectTimeout(3000); //连接主机超时时间ms
            connection.setReadTimeout(3000); //从主机读取数据超时时间ms
            if (HttpURLConnection.HTTP_OK == connection.getResponseCode()) {
                System.out.println("网络联通!");
                return true;
            }
        } catch (IOException e) {
            logger.error("连接不通", e.getMessage());
            return false;
        }
        return false;
    }
}


相关文章
|
30天前
|
缓存 安全 前端开发
探索HTTP协议:网络通信的基石
探索HTTP协议:网络通信的基石
|
1月前
状态码对于理解HTTP请求和响应的流程,以及调试网络问题非常重要
【5月更文挑战第15天】HTTP状态码由三位数字表示,分为1xx-5xx五类。1xx为信息响应,2xx表示成功,如200(请求成功)、201(创建成功)。3xx是重定向,如301(永久移动)、302(临时重定向)。4xx表示客户端错误,如400(坏请求)、404(未找到)。5xx是服务器错误,包括500(内部服务器错误)和503(服务不可用)。这些状态码用于理解请求响应流程和调试网络问题。
24 1
|
8天前
|
JSON 安全 Java
JAVA Socket 实现HTTP与HTTPS客户端发送POST与GET方式请求
JAVA Socket 实现HTTP与HTTPS客户端发送POST与GET方式请求
13 0
|
11天前
|
网络协议 前端开发 Java
网络原理 - HTTP / HTTPS(4)——构造http请求
网络原理 - HTTP / HTTPS(4)——构造http请求
13 1
|
11天前
|
JSON 缓存 前端开发
网络原理 - HTTP / HTTPS(3)——http响应
网络原理 - HTTP / HTTPS(3)——http响应
10 0
|
11天前
|
存储 JSON 安全
网络原理 - HTTP / HTTPS(2)——http请求
网络原理 - HTTP / HTTPS(2)——http请求
13 1
|
11天前
|
前端开发 网络协议 JavaScript
网络原理 - HTTP / HTTPS(1)——http请求
网络原理 - HTTP / HTTPS(1)——http请求
8 0
|
17天前
|
JSON API 定位技术
.NET集成DeveloperSharp实现http网络请求&与其它工具的比较
该内容介绍了一个支持.NET Core 2.0及以上和.NET Framework 4.0及以上的HTTP请求调用方法,主要讨论了POST和GET两种形式。POST请求较为常见,涉及调用地址、发送参数、HTTP请求头和编码格式设置。文中提供了一个使用DeveloperSharp库发送POST请求的C#代码示例,用于发送短信,其中`IU.HttpPost`方法用于执行POST请求。此外,还提到了`HttpPost`方法的参数和返回值说明。最后简要提及了GET请求,通常用于URL带有查询参数的情况,并给出一个简单的GET请求示例。
|
24天前
|
JSON 安全 网络协议
【Linux 网络】网络基础(二)(应用层协议:HTTP、HTTPS)-- 详解
【Linux 网络】网络基础(二)(应用层协议:HTTP、HTTPS)-- 详解
|
1月前
|
移动开发 网络协议 网络安全
【网络安全 | 网络协议】一文讲清HTTP协议
【网络安全 | 网络协议】一文讲清HTTP协议
34 0