日期操作类 + http、https 请求工具类 + 开发环境 忽略 SSL 验证工具类 + 二维码工具类

news/2024/9/23 14:24:09/

日期操作类

package com.pay.common.util;import java.text.SimpleDateFormat;
import java.util.Date;
/*** 日期操作类* 创建者 科帮网* 创建时间	2017年7月31日*/
public class DateUtils {private final static SimpleDateFormat sdfYear = new SimpleDateFormat("yyyy");private final static SimpleDateFormat sdfDay = new SimpleDateFormat("yyyy-MM-dd");private final static SimpleDateFormat sdfDays = new SimpleDateFormat("yyyyMMdd");private final static SimpleDateFormat sdfTime = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");/*** 获取YYYY-MM-DD hh:mm:ss格式** @return*/public static String getTime() {return sdfTime.format(new Date());}public static String getTimestamp() {return String.valueOf(System.currentTimeMillis() / 1000);}
}

http、https 请求工具类

package com.pay.common.util;import org.springframework.util.StringUtils;import javax.net.ssl.*;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.Map;
import java.util.Map.Entry;/*** http、https 请求工具类** @author jiaxiaoxian*/
public class HttpUtils {private static final String DEFAULT_CHARSET = "UTF-8";private static final String _GET = "GET"; // GETprivate static final String _POST = "POST";// POSTpublic static final int DEF_CONN_TIMEOUT = 30000;public static final int DEF_READ_TIMEOUT = 30000;/*** 初始化http请求参数** @param url* @param method* @param headers* @return* @throws Exception*/private static HttpURLConnection initHttp(String url, String method,Map<String, String> headers) throws Exception {URL _url = new URL(url);HttpURLConnection http = (HttpURLConnection) _url.openConnection();// 连接超时http.setConnectTimeout(DEF_CONN_TIMEOUT);// 读取超时 --服务器响应比较慢，增大时间http.setReadTimeout(DEF_READ_TIMEOUT);http.setUseCaches(false);http.setRequestMethod(method);http.setRequestProperty("Content-Type","application/x-www-form-urlencoded");http.setRequestProperty("User-Agent","Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.146 Safari/537.36");if (null != headers && !headers.isEmpty()) {for (Entry<String, String> entry : headers.entrySet()) {http.setRequestProperty(entry.getKey(), entry.getValue());}}http.setDoOutput(true);http.setDoInput(true);http.connect();return http;}/*** 初始化http请求参数** @param url* @param method* @return* @throws Exception*/private static HttpsURLConnection initHttps(String url, String method,Map<String, String> headers) throws Exception {TrustManager[] tm = {new MyX509TrustManager()};System.setProperty("https.protocols", "TLSv1");SSLContext sslContext = SSLContext.getInstance("TLS");sslContext.init(null, tm, new java.security.SecureRandom());// 从上述SSLContext对象中得到SSLSocketFactory对象SSLSocketFactory ssf = sslContext.getSocketFactory();URL _url = new URL(url);HttpsURLConnection http = (HttpsURLConnection) _url.openConnection();// 设置域名校验http.setHostnameVerifier(new HttpUtils().new TrustAnyHostnameVerifier());// 连接超时http.setConnectTimeout(DEF_CONN_TIMEOUT);// 读取超时 --服务器响应比较慢，增大时间http.setReadTimeout(DEF_READ_TIMEOUT);http.setUseCaches(false);http.setRequestMethod(method);http.setRequestProperty("Content-Type","application/x-www-form-urlencoded");http.setRequestProperty("User-Agent","Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.146 Safari/537.36");if (null != headers && !headers.isEmpty()) {for (Entry<String, String> entry : headers.entrySet()) {http.setRequestProperty(entry.getKey(), entry.getValue());}}http.setSSLSocketFactory(ssf);http.setDoOutput(true);http.setDoInput(true);http.connect();return http;}/*** @return 返回类型:* @throws Exception* @description 功能描述: get 请求*/public static String get(String url, Map<String, String> params,Map<String, String> headers) throws Exception {HttpURLConnection http = null;if (isHttps(url)) {http = initHttps(initParams(url, params), _GET, headers);} else {http = initHttp(initParams(url, params), _GET, headers);}InputStream in = http.getInputStream();BufferedReader read = new BufferedReader(new InputStreamReader(in,DEFAULT_CHARSET));String valueString = null;StringBuffer bufferRes = new StringBuffer();// 优化，不能光使用!=null做判断。有为""的情况，防止多次空循环while (!StringUtils.isEmpty(valueString = read.readLine())) {bufferRes.append(valueString);}in.close();if (http != null) {http.disconnect();// 关闭连接}return bufferRes.toString();}public static String get(String url) throws Exception {return get(url, null);}public static String get(String url, Map<String, String> params)throws Exception {return get(url, params, null);}public static String post(String url, String params) throws Exception {HttpURLConnection http = null;if (isHttps(url)) {http = initHttps(url, _POST, null);} else {http = initHttp(url, _POST, null);}OutputStream out = http.getOutputStream();out.write(params.getBytes(DEFAULT_CHARSET));out.flush();out.close();InputStream in = http.getInputStream();BufferedReader read = new BufferedReader(new InputStreamReader(in,DEFAULT_CHARSET));String valueString = null;StringBuffer bufferRes = new StringBuffer();while ((valueString = read.readLine()) != null) {bufferRes.append(valueString);}in.close();if (http != null) {http.disconnect();// 关闭连接}return bufferRes.toString();}public static String post(String url, String params, Map<String, String> headers) throws Exception {HttpURLConnection http = null;if (isHttps(url)) {http = initHttps(url, _POST, headers);} else {http = initHttp(url, _POST, headers);}OutputStream out = http.getOutputStream();out.write(params.getBytes(DEFAULT_CHARSET));out.flush();out.close();InputStream in = http.getInputStream();BufferedReader read = new BufferedReader(new InputStreamReader(in,DEFAULT_CHARSET));String valueString = null;StringBuffer bufferRes = new StringBuffer();while ((valueString = read.readLine()) != null) {bufferRes.append(valueString);}in.close();if (http != null) {http.disconnect();// 关闭连接}return bufferRes.toString();}/*** 功能描述: 构造请求参数** @return 返回类型:* @throws Exception*/public static String initParams(String url, Map<String, String> params)throws Exception {if (null == params || params.isEmpty()) {return url;}StringBuilder sb = new StringBuilder(url);if (url.indexOf("?") == -1) {sb.append("?");}sb.append(map2Url(params));return sb.toString();}/*** map构造url** @return 返回类型:* @throws Exception*/public static String map2Url(Map<String, String> paramToMap)throws Exception {if (null == paramToMap || paramToMap.isEmpty()) {return null;}StringBuffer url = new StringBuffer();boolean isfist = true;for (Entry<String, String> entry : paramToMap.entrySet()) {if (isfist) {isfist = false;} else {url.append("&");}url.append(entry.getKey()).append("=");String value = entry.getValue();if (!StringUtils.isEmpty(value)) {url.append(URLEncoder.encode(value, DEFAULT_CHARSET));}}return url.toString();}/*** 检测是否https** @param url*/private static boolean isHttps(String url) {return url.startsWith("https");}/*** https 域名校验* @return*/public class TrustAnyHostnameVerifier implements HostnameVerifier {@Overridepublic boolean verify(String hostname, SSLSession session) {return true;// 直接返回true}}private static class MyX509TrustManager implements X509TrustManager {@Overridepublic X509Certificate[] getAcceptedIssuers() {return null;}@Overridepublic void checkServerTrusted(X509Certificate[] chain, String authType)throws CertificateException {}@Overridepublic void checkClientTrusted(X509Certificate[] chain, String authType)throws CertificateException {}};public static void main(String[] args) {String str = "";try {str = get("https://www.baidu.com");} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}System.out.println(str);}}

开发环境 忽略 SSL 验证工具类

package com.pay.common.util;import javax.net.ssl.*;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;/*** 开发环境 忽略 SSL 验证* 爪哇笔记：https://blog.52itstyle.vip* @author 小柒2012*/
public class SslUtils {private static void trustAllHttpsCertificates() throws Exception {TrustManager[] trustAllCerts = new TrustManager[1];TrustManager tm = new miTM();trustAllCerts[0] = tm;SSLContext sc = SSLContext.getInstance("SSL");sc.init(null, trustAllCerts, null);HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());}static class miTM implements TrustManager,X509TrustManager {@Overridepublic X509Certificate[] getAcceptedIssuers() {return null;}public boolean isServerTrusted(X509Certificate[] certs) {return true;}public boolean isClientTrusted(X509Certificate[] certs) {return true;}@Overridepublic void checkServerTrusted(X509Certificate[] certs, String authType)throws CertificateException {return;}@Overridepublic void checkClientTrusted(X509Certificate[] certs, String authType)throws CertificateException {return;}}/*** 忽略HTTPS请求的SSL证书，必须在openConnection之前调用* @throws Exception*/public static void ignoreSsl() throws Exception{HostnameVerifier hv = (urlHostName, session) -> {System.out.println("Warning: URL Host: " + urlHostName + " vs. " + session.getPeerHost());return true;};trustAllHttpsCertificates();HttpsURLConnection.setDefaultHostnameVerifier(hv);}}

二维码

package com.pay.common.util;import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.WriterException;
import com.google.zxing.client.j2se.MatrixToImageWriter;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;import java.io.File;
import java.io.IOException;
import java.util.HashMap;/*** 二维码* 爪哇笔记：https://blog.52itstyle.vip* @author 小柒2012*/
public class ZxingUtils {static final String FORMAT = "png";static final int height = 256;/*** 生成二维码* @param qrCode* @param imgPath*/public static void createQRCodeImage(String qrCode,String imgPath){HashMap hashMap = new HashMap();hashMap.put(EncodeHintType.CHARACTER_SET, "UTF-8");hashMap.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);hashMap.put(EncodeHintType.MARGIN, 2);try {BitMatrix bitMatrix = new MultiFormatWriter().encode(qrCode, BarcodeFormat.QR_CODE, height, height, hashMap);MatrixToImageWriter.writeToPath(bitMatrix, FORMAT, new File(imgPath).toPath());} catch (WriterException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}}
}

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