在使用Https下载图片，出现如下问题。最后发现是jdk 1.8.60问题，换成最新的1.8.172
javax.net.ssl.SSLHandshakeException: Received fatal alert: handshake_failure
public class HttpService {
private static final String CHINESE_REGX = "[\u4e00-\u9fa5]";
private static final String PICTURE_REGX = "(/|=)[^/=?&]+\.(jpeg|gif|jpg|png|bmp|svg)";
private static final Logger log = LoggerFactory.getLogger(HttpService.class);
private final static HostnameVerifier DO_NOT_VERIFY = new HostnameVerifier() {
@Override
public boolean verify(String hostname, SSLSession session) {
return true;
}
};
private static class TrustAnyTrustManager implements X509TrustManager
{
@Override
public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException
{
}
@Override
public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException
{
}
@Override
public X509Certificate[] getAcceptedIssuers()
{
return new X509Certificate[]{};
}
}
public static String encodeChinese(String url) {
if (!StringUtils.isBlank(url)) {
try {
Matcher matcher = Pattern.compile(CHINESE_REGX).matcher(url);
while (matcher.find()) {
String tmp = matcher.group();
url = url.replaceAll(tmp, java.net.URLEncoder.encode(tmp, "utf-8"));
}
} catch (UnsupportedEncodingException e) {
log.error("encode url fail,url=" + url, e);
}
}
return url;
}
public static String getFileNameFromUrl(String url) {
Pattern pat = Pattern.compile(PICTURE_REGX);//正则判断
Matcher mc = pat.matcher(url);//条件匹配
while (mc.find()) {
String substring = mc.group();//截取文件名后缀名
return substring.substring(1);
}
return "dev.png";
}
public static String getFileExt(String file) {
int i = file.lastIndexOf(".");
return file.substring(i+1);
}
private static String getHeader() {
String auth = "user:passwd";
byte[] encodedAuth = Base64.encodeBase64(auth.getBytes());
String authHeader = "Basic " + new String(encodedAuth);
return authHeader;
}
/**
* 增加相关header模拟网页访问，用以避免目标网站屏蔽爬虫
* @param con
*/
private static void addHeaderForCrawler(URLConnection con){
con.setRequestProperty("User-Agent","Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.108 Safari/537.36");
// con.setRequestProperty("Referer", "http://my.coms");
con.setRequestProperty("Accept", "image/webp,image/apng,image/,/*;q=0.8");
// con.setRequestProperty("Accept", "Encoding:gzip, deflate");
con.setRequestProperty("Accept-Language", "zh-CN,zh;q=0.9,en;q=0.8");
con.setRequestProperty("Cache-Control", "no-cache");
}
private static InputStream getIS(String picUrl, int apiTimeout){
try {
// 构造URL
URL url = new URL(encodeChinese(picUrl));
// 打开连接
URLConnection piccon;
//通过请求地址判断请求类型(http或者是https)
if (url.getProtocol().toLowerCase().equals("https")) {
HttpsURLConnection https = (HttpsURLConnection) url.openConnection();
SSLContext sc = SSLContext.getInstance("SSL");
sc.init(null, new TrustManager[]{new TrustAnyTrustManager()}, new java.security.SecureRandom());
https.setSSLSocketFactory(sc.getSocketFactory());
https.setHostnameVerifier(DO_NOT_VERIFY);
piccon = https;
} else {
piccon = (HttpURLConnection) url.openConnection();
}
addHeaderForCrawler(piccon);
//设置请求超时为120s
piccon.setConnectTimeout(apiTimeout * 1000);
// if (picUrl.indexOf("myhost") > 0) {
// piccon.setRequestProperty("Authorization", getHeader());
// }
// piccon.connect();
// 输入流
return piccon.getInputStream();
} catch(Exception e){
log.error("getInputStream fail",e);
log.error("url="+picUrl);
}
return null;
}
/**
* 从指定url地址下载文件，然后上传到文档服务器，返回文档的新url地址
*
* @param apiUrl 文档服务器地址
* @param picUrl 文件url地址
* @return String 文件在服务器保存绝对路径
* @throws IOException
*/
public static String saveUrlToFdfs(String apiUrl, int apiTimeout, String picUrl) throws IOException {
String result = "";
String fileName = getFileNameFromUrl(picUrl);
InputStream in = getIS(picUrl, apiTimeout);
if (in == null) {
log.error("url is illegal,url="+picUrl);
return "";
}
BufferedImage img;
try {
img = ImageIO.read(in);
if(img == null || img.getWidth(null) <= 0 || img.getHeight(null) <= 0){
in.close();
log.error("url is not image,url="+picUrl);
return "";
}
} catch (Exception e) {
log.error("read url to image fail,url="+picUrl);
log.error("exception",e);
return "";
} finally {
in.close();
}
URL urlObj = new URL(apiUrl);
// 连接
HttpURLConnection con = (HttpURLConnection) urlObj.openConnection();
con.setRequestMethod("POST"); // 以Post方式提交表单，默认get方式
con.setDoInput(true);
con.setDoOutput(true);
con.setUseCaches(false); // post方式不能使用缓存
// 设置请求头信息
con.setRequestProperty("Connection", "Keep-Alive");
con.setRequestProperty("Charset", "UTF-8");
// 设置边界
String BOUNDARY = "----------" + System.currentTimeMillis();
con.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + BOUNDARY);
// 请求正文信息
// 第一部分：
StringBuilder sb = new StringBuilder();
sb.append("--"); // 必须多两道线
sb.append(BOUNDARY);
sb.append("\r\n");
sb.append("Content-Disposition: form-data;name=\"file1\";filename=\"" + fileName + "\"\r\n");
sb.append("Content-Type:application/octet-stream\r\n\r\n");
byte[] head = sb.toString().getBytes("utf-8");
// 获得输出流
OutputStream out = new DataOutputStream(con.getOutputStream());
// 输出表头
out.write(head);
// 文件正文部分
// 输入流
in = getIS(picUrl, apiTimeout);
if (in == null) {
log.error("url is illegal,url="+picUrl);
return "";
}
// in.close();
try {
int bytes = 0;
int fileSize = 0;
byte[] bufferOut = new byte[1024];
while ((bytes = in.read(bufferOut)) != -1) {
fileSize += bytes;
out.write(bufferOut, 0, bytes);
}
if(fileSize < 100){
log.error("fileSize to small,size="+fileSize);
log.error("picUrl="+picUrl);
return "";
}
} finally {
in.close();
}
// 结尾部分
byte[] foot = ("\r\n--" + BOUNDARY + "--\r\n").getBytes("utf-8");// 定义最后数据分隔线
out.write(foot);
out.flush();
out.close();
StringBuffer buffer = new StringBuffer();
BufferedReader reader = null;
try {
// 定义BufferedReader输入流来读取URL的响应
reader = new BufferedReader(new InputStreamReader(con.getInputStream()));
String line = null;
while ((line = reader.readLine()) != null) {
buffer.append(line);
}
result = buffer.toString();
} catch (IOException e) {
log.error("发送POST请求出现异常,picUrl=" + picUrl, e);
throw new IOException("数据读取异常");
} finally {
if (reader != null) {
reader.close();
}
}
if (StringUtils.isBlank(result)) {
log.error("返回值为空,picUrl=" + picUrl);
return "";
}
return getPictureUrl(result);
}
public static String getPictureUrl(String jsonStr) {
if (!StringUtils.isBlank(jsonStr)) {
try {
ObjectMapper mapper = new ObjectMapper();
jsonStr = jsonStr.replace("“", "\"");
jsonStr = jsonStr.replace("”", "\"");
log.info("jsonStr=" + jsonStr);
FdfsFile[] datas = mapper.readValue(jsonStr, FdfsFile[].class);
log.info("array length=" + datas.length);
if (datas.length == 1 && !StringUtils.isBlank(datas[0].groupName) && !StringUtils.isBlank(datas[0].remoteFileName)) {
return "/" + datas[0].groupName + "/" + datas[0].remoteFileName;
}
} catch (Exception e) {
log.error("Passe json string fail,str=" + jsonStr, e);
}
}
return "";
}
/**
* 从指定url地址下载文件
*
* @param response http响应
* @param picUrl 文件url地址
* @param fileName 文件名
* @return void
* @throws IOException
*/
public static void downloadFileByUrl(HttpServletResponse response, String picUrl, String fileName) {
InputStream in = null;
OutputStream out = null;
try {
// 输入流
in = getIS(picUrl, 120);
if (in == null) {
log.error("url is illegal,url="+picUrl);
return;
}
//写图片
response.setHeader("content-disposition", "attachment;fileName=" + URLEncoder.encode(fileName, "UTF-8"));
out = new BufferedOutputStream(response.getOutputStream());
//读取图片
int bytes = 0;
byte[] bufferOut = new byte[1024];
while ((bytes = in.read(bufferOut)) != -1) {
out.write(bufferOut, 0, bytes);
}
out.flush();
} catch(Exception e){
log.error("doawnload file fail=",e);
log.error("file url="+picUrl);
} finally {
try {
if (in != null) {
in.close();
}
if (out != null) {
out.close();
}
} catch(Exception ex){
log.error("close stream fail=",ex);
}
}
}
/**
* 从指定url读取图片
*
* @param response http响应
* @param picUrl 图片url地址
* @return void
* @throws IOException
*/
public static void showPicByUrl(HttpServletResponse response, String picUrl) {
InputStream in = null;
OutputStream out = null;
try {
// 输入流
in = getIS(picUrl, 120);
if (in == null) {
log.error("url is illegal,url="+picUrl);
return;
}
//写图片
response.setContentType("image/jpeg");
response.setCharacterEncoding("UTF-8");
out = new BufferedOutputStream(response.getOutputStream());
//读取图片
int bytes = 0;
byte[] bufferOut = new byte[1024];
while ((bytes = in.read(bufferOut)) != -1) {
out.write(bufferOut, 0, bytes);
}
out.flush();
} catch(Exception e){
log.error("show pic fail=",e);
} finally {
try {
if (in != null) {
in.close();
}
if (out != null) {
out.close();
}
} catch(Exception ex){
log.error("close stream fail=",ex);
}
}
}
}
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