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  • java http 请求的工具类

    /*** Eclipse Class Decompiler plugin, copyright (c) 2016 Chen Chao (cnfree2000@hotmail.com) ***/
    package com.ods.common.util;

    import com.ods.common.util.MyFile;
    import com.ods.common.util.PropUtil;
    import com.ods.common.util.ProxyUtil;
    import com.ods.common.util.StringUtil;
    import java.io.BufferedReader;
    import java.io.ByteArrayOutputStream;
    import java.io.DataInputStream;
    import java.io.DataOutputStream;
    import java.io.File;
    import java.io.FileInputStream;
    import java.io.IOException;
    import java.io.InputStream;
    import java.io.InputStreamReader;
    import java.io.OutputStream;
    import java.io.OutputStreamWriter;
    import java.net.ConnectException;
    import java.net.HttpURLConnection;
    import java.net.Proxy;
    import java.net.URL;
    import java.nio.charset.Charset;
    import java.text.ParseException;
    import java.text.SimpleDateFormat;
    import java.util.ArrayList;
    import java.util.Date;
    import java.util.HashMap;
    import java.util.Iterator;
    import java.util.Map;
    import java.util.UUID;
    import java.util.Map.Entry;
    import net.sf.json.JSONObject;
    import org.apache.http.HttpHost;
    import org.apache.http.client.config.RequestConfig;
    import org.apache.http.client.entity.UrlEncodedFormEntity;
    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.BasicNameValuePair;
    import org.apache.http.util.EntityUtils;
    import org.apache.logging.log4j.LogManager;
    import org.apache.logging.log4j.Logger;
    import org.junit.Test;
    import org.springframework.http.HttpStatus;

    public class HttpUtil {
    private static Logger logger = LogManager.getLogger(HttpUtil.class.getName());

    public static void main(String[] args) throws Exception {
    String content = "111";
    String url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=ACCESS_TOKEN&type=wx_card";
    String qw = sendGet(url);
    JSONObject object = JSONObject.fromObject(qw);
    System.out.println(object);
    }

    @Test
    public void name() {
    String points_date = "2015-12-05 00:00:00";
    SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    Date date = null;

    try {
    date = sdf.parse(points_date);
    } catch (ParseException arg4) {
    arg4.printStackTrace();
    }

    SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    points_date = format.format(date);
    System.out.println(points_date);
    }

    public static JSONObject postMap(String url, Map<String, Object> headerMap, Map<String, Object> paramMap, String stringType) throws IOException {
    CloseableHttpClient httpclient = null;
    JSONObject responseJson = null;
    String ifproxy = PropUtil.getPropertyValue("ods.http.is.proxy", "0").replace(""", "");
    if(!"0".equals(ifproxy)) {
    String postMethod = PropUtil.getPropertyValue("ods.http.proxy.server", "10.74.46.189:8080").replace(""", "");
    String requestConfig = PropUtil.getPropertyValue("ods.http.proxy.not", "127.0.0.1").replace(""", "");
    String[] hashMap = postMethod.split(":");
    String e = hashMap[0];
    boolean result = false;
    String[] entity = requestConfig.split(",");

    int proxyPort;
    for(proxyPort = 0; proxyPort < entity.length; ++proxyPort) {
    if(url.indexOf(entity[proxyPort]) >= 0) {
    httpclient = HttpClients.custom().build();
    result = true;
    break;
    }
    }

    if(!result) {
    proxyPort = Integer.valueOf(hashMap[1]).intValue();
    HttpHost proxy = new HttpHost(e, proxyPort);
    httpclient = HttpClients.custom().setProxy(proxy).build();
    }
    } else {
    httpclient = HttpClients.custom().build();
    }

    HttpPost arg18 = new HttpPost(url);
    if(StringUtil.isNotEmpty(headerMap)) {
    Iterator arg19 = headerMap.entrySet().iterator();

    while(arg19.hasNext()) {
    Entry arg21 = (Entry)arg19.next();
    arg18.setHeader((String)arg21.getKey(), (String)arg21.getValue());
    }
    }

    RequestConfig arg20 = RequestConfig.custom().setSocketTimeout('').setConnectTimeout('').build();
    new HashMap();

    try {
    arg18.setConfig(arg20);
    if("json".equals(stringType)) {
    if(StringUtil.isNotEmpty(paramMap)) {
    StringEntity arg23 = new StringEntity(JSONObject.fromObject(paramMap).toString(), "utf-8");
    arg23.setContentEncoding("utf-8");
    arg23.setContentType("application/json");
    arg18.setEntity(arg23);
    }
    } else {
    ArrayList arg22 = new ArrayList();
    if(StringUtil.isNotEmpty(paramMap)) {
    Iterator arg25 = paramMap.entrySet().iterator();

    while(arg25.hasNext()) {
    Entry arg27 = (Entry)arg25.next();
    arg22.add(new BasicNameValuePair((String)arg27.getKey(), (String)arg27.getValue()));
    }

    UrlEncodedFormEntity arg28 = new UrlEncodedFormEntity(arg22, "UTF-8");
    arg18.setEntity(arg28);
    }
    }

    CloseableHttpResponse arg24 = httpclient.execute(arg18);
    if(arg24.getStatusLine().getStatusCode() == HttpStatus.OK.value() || arg24.getStatusLine().getStatusCode() == HttpStatus.ACCEPTED.value() || arg24.getStatusLine().getStatusCode() == HttpStatus.UNAUTHORIZED.value()) {
    String arg26 = EntityUtils.toString(arg24.getEntity(), "utf-8");
    responseJson = JSONObject.fromObject(arg26);
    }
    } catch (IOException arg16) {
    arg16.printStackTrace();
    logger.error("postMap请求出现异常,url:" + url + arg16);
    } finally {
    httpclient.close();
    }

    return responseJson;
    }

    public static String Post(String url, String param) throws Exception {
    Object in = null;
    String result = "";
    DataOutputStream out = null;

    try {
    URL e = new URL(url);
    Proxy proxy = ProxyUtil.getHttpProxy(url);
    HttpURLConnection connection = null;
    if(proxy == null) {
    connection = (HttpURLConnection)e.openConnection();
    } else {
    connection = (HttpURLConnection)e.openConnection(proxy);
    }

    connection.setDoInput(true);
    connection.setDoOutput(true);
    connection.setRequestMethod("POST");
    connection.setUseCaches(false);
    connection.setInstanceFollowRedirects(true);
    connection.setReadTimeout(300000);
    connection.setRequestProperty("Content-Type", "application/json;charset=utf-8");
    connection.connect();
    out = new DataOutputStream(connection.getOutputStream());
    out.write(param.getBytes("UTF-8"));
    out.flush();
    out.close();
    BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
    StringBuffer sbf = new StringBuffer();

    String lines;
    while((lines = reader.readLine()) != null) {
    lines = new String(lines.getBytes(), "utf-8");
    sbf.append(lines);
    }

    result = sbf.toString();
    reader.close();
    connection.disconnect();
    } catch (ConnectException arg20) {
    logger.error("Post请求出现异常:连接超时,url:" + url + arg20);
    } catch (Exception arg21) {
    logger.error("Post请求出现异常,url:" + url + arg21);
    } finally {
    try {
    if(out != null) {
    out.close();
    }

    if(in != null) {
    ((BufferedReader)in).close();
    }
    } catch (IOException arg19) {
    arg19.printStackTrace();
    }

    }

    return result;
    }

    public static String Post(String url, String param, String charsetname) throws Exception {
    if(StringUtil.isNotEmpty(charsetname)) {
    charsetname = "UTF-8";
    }

    Object in = null;
    String result = "";
    DataOutputStream out = null;

    try {
    URL e = new URL(url);
    Proxy proxy = ProxyUtil.getHttpProxy(url);
    HttpURLConnection connection = null;
    if(proxy == null) {
    connection = (HttpURLConnection)e.openConnection();
    } else {
    connection = (HttpURLConnection)e.openConnection(proxy);
    }

    connection.setDoInput(true);
    connection.setDoOutput(true);
    connection.setRequestMethod("POST");
    connection.setUseCaches(false);
    connection.setInstanceFollowRedirects(true);
    connection.setRequestProperty("Content-Type", "application/json;charset=" + charsetname);
    connection.connect();
    out = new DataOutputStream(connection.getOutputStream());
    out.write(param.getBytes(charsetname));
    out.flush();
    out.close();
    BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream(), charsetname));
    StringBuffer sbf = new StringBuffer();

    String lines;
    while((lines = reader.readLine()) != null) {
    String iso = new String(lines.getBytes("UTF-8"), "ISO-8859-1");
    lines = new String(iso.getBytes("ISO-8859-1"), "UTF-8");
    String iso1 = new String(lines.getBytes("gbk"), "ISO-8859-1");
    String lines1 = new String(iso1.getBytes("ISO-8859-1"), "gbk");
    logger.error("GB2312:" + Charset.forName("GB2312").newEncoder().canEncode(lines));
    logger.error("ISO-8859-1:" + Charset.forName("ISO-8859-1").newEncoder().canEncode(lines));
    logger.error("gbk:" + Charset.forName("gbk").newEncoder().canEncode(lines));
    logger.error("utf-8:" + Charset.forName("utf-8").newEncoder().canEncode(lines));
    sbf.append(lines);
    logger.error("lines:" + lines);
    logger.error("lines1:" + lines1);
    }

    result = sbf.toString();
    reader.close();
    connection.disconnect();
    } catch (ConnectException arg24) {
    logger.error("Post请求出现异常:连接超时,url:" + url + arg24);
    } catch (Exception arg25) {
    logger.error("Post请求出现异常,url:" + url + arg25);
    } finally {
    try {
    if(out != null) {
    out.close();
    }

    if(in != null) {
    ((BufferedReader)in).close();
    }
    } catch (IOException arg23) {
    arg23.printStackTrace();
    }

    }

    return result;
    }

    public static String Post(String url, String postData, Map<String, String> headers) throws IOException {
    URL u = null;
    HttpURLConnection con = null;
    InputStream inputStream = null;
    OutputStreamWriter outStream = null;
    ByteArrayOutputStream baos = null;
    String result = null;

    try {
    u = new URL(url);
    con = (HttpURLConnection)u.openConnection();
    con.setRequestMethod("POST");
    con.setDoOutput(true);
    con.setDoInput(true);
    con.setUseCaches(false);
    con.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
    con.setRequestProperty("connection", "Keep-Alive");
    con.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
    if(headers != null && !headers.isEmpty()) {
    Iterator arg9 = headers.keySet().iterator();

    while(arg9.hasNext()) {
    String e = (String)arg9.next();
    con.setRequestProperty(e, (String)headers.get(e));
    }
    }

    outStream = new OutputStreamWriter(con.getOutputStream());
    outStream.write(postData);
    outStream.flush();
    outStream.close();
    if(con.getResponseCode() == 200) {
    inputStream = con.getInputStream();
    baos = new ByteArrayOutputStream();
    boolean e1 = true;

    int e2;
    while((e2 = inputStream.read()) != -1) {
    baos.write(e2);
    }

    result = baos.toString("utf-8");
    } else {
    logger.error("请求返回错误码:" + con.getResponseCode());
    }
    } catch (Exception arg13) {
    arg13.printStackTrace();
    } finally {
    if(con != null) {
    con.disconnect();
    }

    if(inputStream != null) {
    inputStream.close();
    }

    if(outStream != null) {
    outStream.close();
    }

    if(baos != null) {
    baos.close();
    }

    }

    return result;
    }

    public static String sendGet(String url) {
    String result = "";
    BufferedReader in = null;
    HttpURLConnection conn = null;

    try {
    URL realUrl = new URL(url);
    Proxy proxy = ProxyUtil.getHttpProxy(url);
    if(proxy == null) {
    conn = (HttpURLConnection)realUrl.openConnection();
    } else {
    conn = (HttpURLConnection)realUrl.openConnection(proxy);
    }

    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.setDoOutput(true);
    conn.setDoInput(true);
    conn.setRequestProperty("contentType", "UTF-8");
    outputStream = conn.getOutputStream();
    outputStream.write(param.getBytes("UTF-8"));
    outputStream.flush();

    String line;
    for(in = new BufferedReader(new InputStreamReader(conn.getInputStream(), "utf-8")); (line = in.readLine()) != null; result = result + " " + line) {
    ;
    }
    } catch (ConnectException arg23) {
    logger.error("sendPost请求出现异常:连接超时" + url + arg23);
    } catch (Exception arg24) {
    logger.error("sendPost请求出现异常,url:" + url + arg24);
    } finally {
    if(conn != null) {
    conn.disconnect();
    }

    try {
    if(in != null) {
    in.close();
    }
    } catch (IOException arg22) {
    arg22.printStackTrace();
    }

    try {
    if(outputStream != null) {
    outputStream.close();
    }
    } catch (IOException arg21) {
    arg21.printStackTrace();
    }

    }

    return result;
    }

    public static JSONObject uploadMedia(String Url, String filePath) {
    JSONObject jsonObj = null;
    BufferedReader reader = null;

    try {
    URL e = new URL(Url);
    String result = null;
    File file = new File(filePath);
    if(!file.exists() || !file.isFile()) {
    throw new IOException("上传的文件不存在");
    }

    Proxy proxy = ProxyUtil.getHttpProxy(Url);
    HttpURLConnection conn = null;
    if(proxy == null) {
    conn = (HttpURLConnection)e.openConnection();
    } else {
    conn = (HttpURLConnection)e.openConnection(proxy);
    }

    conn.setRequestMethod("POST");
    conn.setDoInput(true);
    conn.setDoOutput(true);
    conn.setUseCaches(false);
    conn.setRequestProperty("Connection", "Keep-Alive");
    conn.setRequestProperty("Charset", "UTF-8");
    String BOUNDARY = "----------" + System.currentTimeMillis();
    conn.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + BOUNDARY);
    StringBuilder sb = new StringBuilder();
    sb.append("--");
    sb.append(BOUNDARY);
    sb.append(" ");
    sb.append("Content-Disposition: form-data;name="file";filename="" + file.getName() + "" ");
    sb.append("Content-Type:application/octet-stream ");
    byte[] head = sb.toString().getBytes("utf-8");
    DataOutputStream out = new DataOutputStream(conn.getOutputStream());
    out.write(head);
    DataInputStream in = new DataInputStream(new FileInputStream(file));
    boolean bytes = false;
    byte[] bufferOut = new byte[1024];

    int bytes1;
    while((bytes1 = in.read(bufferOut)) != -1) {
    out.write(bufferOut, 0, bytes1);
    }

    in.close();
    byte[] foot = (" --" + BOUNDARY + "-- ").getBytes("utf-8");
    out.write(foot);
    out.flush();
    out.close();
    StringBuffer buffer = new StringBuffer();
    reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
    String line = null;

    while((line = reader.readLine()) != null) {
    buffer.append(line);
    }

    if(result == null) {
    result = buffer.toString();
    }

    jsonObj = JSONObject.fromObject(result);
    } catch (ConnectException arg28) {
    logger.error("uploadMedia请求出现异常:连接超时,url:" + Url + arg28);
    } catch (Exception arg29) {
    logger.error("uploadMedia请求出现异常,url:" + Url + arg29);
    } finally {
    if(reader != null) {
    try {
    reader.close();
    } catch (IOException arg27) {
    arg27.printStackTrace();
    }
    }

    }

    return jsonObj;
    }

    public static MyFile downloadMedia(String url) {
    Object bis = null;
    MyFile mf = new MyFile();

    try {
    URL e = new URL(url);
    Proxy proxy = ProxyUtil.getHttpProxy(url);
    HttpURLConnection conn = null;
    if(proxy == null) {
    conn = (HttpURLConnection)e.openConnection();
    } else {
    conn = (HttpURLConnection)e.openConnection(proxy);
    }

    conn.setDoInput(true);
    conn.setRequestMethod("GET");
    System.setProperty("sun.net.client.defaultConnectTimeout", "30000");
    System.setProperty("sun.net.client.defaultReadTimeout", "30000");
    conn.connect();
    String fileExt = conn.getHeaderField("Content-Type");
    fileExt = getFileExt(fileExt);
    UUID uuid = UUID.randomUUID();
    InputStream is = conn.getInputStream();
    mf.setFileName(uuid + fileExt);
    mf.setInStream(is);
    conn.disconnect();
    } catch (ConnectException arg8) {
    logger.error("downloadMedia请求出现异常:连接超时,url:" + url + arg8);
    } catch (Exception arg9) {
    logger.error("downloadMedia请求出现异常,url:" + url + arg9);
    }

    return mf;
    }

    public static String uploadByUrlInputream(InputStream inputStream, String fileName, String surl) {
    BufferedReader reader = null;
    String result = null;

    try {
    URL e = new URL(surl);
    Proxy proxy = ProxyUtil.getHttpProxy(surl);
    HttpURLConnection con = null;
    if(proxy == null) {
    con = (HttpURLConnection)e.openConnection();
    } else {
    con = (HttpURLConnection)e.openConnection(proxy);
    }

    con.setRequestMethod("POST");
    con.setDoInput(true);
    con.setDoOutput(true);
    con.setUseCaches(false);
    con.setRequestProperty("Connection", "Keep-Alive");
    con.setRequestProperty("Charset", "UTF-8");
    String BOUNDARY = "----------" + System.currentTimeMillis();
    con.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + BOUNDARY);
    StringBuilder sb = new StringBuilder();
    sb.append("--");
    sb.append(BOUNDARY);
    sb.append(" ");
    sb.append("Content-Disposition: form-data;name="file";filename="" + fileName + "" ");
    sb.append("Content-Type:application/octet-stream ");
    byte[] head = sb.toString().getBytes("utf-8");
    DataOutputStream out = new DataOutputStream(con.getOutputStream());
    out.write(head);
    DataInputStream in = new DataInputStream(inputStream);
    boolean bytes = false;
    byte[] bufferOut = new byte[1024];

    int bytes1;
    while((bytes1 = in.read(bufferOut)) != -1) {
    out.write(bufferOut, 0, bytes1);
    }

    in.close();
    byte[] foot = (" --" + BOUNDARY + "-- ").getBytes("utf-8");
    out.write(foot);
    out.flush();
    out.close();
    StringBuffer buffer = new StringBuffer();
    reader = new BufferedReader(new InputStreamReader(con.getInputStream()));
    String line = null;

    while((line = reader.readLine()) != null) {
    buffer.append(line);
    }

    if(result == null) {
    result = buffer.toString();
    }
    } catch (ConnectException arg27) {
    logger.error("uploadByUrlInputream请求出现异常:连接超时,url:" + surl + arg27);
    } catch (Exception arg28) {
    logger.error("uploadByUrlInputream请求出现异常,url:" + surl + arg28);
    } finally {
    if(reader != null) {
    try {
    reader.close();
    } catch (IOException arg26) {
    arg26.printStackTrace();
    }
    }

    }

    return result;
    }

    public static String uploadByInputream(FileInputStream fileStream, String fileName, String surl) {
    BufferedReader reader = null;
    String result = null;

    try {
    URL e = new URL(surl);
    Proxy proxy = ProxyUtil.getHttpProxy(surl);
    HttpURLConnection con = null;
    if(proxy == null) {
    con = (HttpURLConnection)e.openConnection();
    } else {
    con = (HttpURLConnection)e.openConnection(proxy);
    }

    con.setRequestMethod("POST");
    con.setDoInput(true);
    con.setDoOutput(true);
    con.setUseCaches(false);
    con.setRequestProperty("Connection", "Keep-Alive");
    con.setRequestProperty("Charset", "UTF-8");
    String BOUNDARY = "----------" + System.currentTimeMillis();
    con.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + BOUNDARY);
    StringBuilder sb = new StringBuilder();
    sb.append("--");
    sb.append(BOUNDARY);
    sb.append(" ");
    sb.append("Content-Disposition: form-data;name="file";filename="" + fileName + "" ");
    sb.append("Content-Type:application/octet-stream ");
    byte[] head = sb.toString().getBytes("utf-8");
    DataOutputStream out = new DataOutputStream(con.getOutputStream());
    out.write(head);
    DataInputStream in = new DataInputStream(fileStream);
    boolean bytes = false;
    byte[] bufferOut = new byte[1024];

    int bytes1;
    while((bytes1 = in.read(bufferOut)) != -1) {
    out.write(bufferOut, 0, bytes1);
    }

    in.close();
    byte[] foot = (" --" + BOUNDARY + "-- ").getBytes("utf-8");
    out.write(foot);
    out.flush();
    out.close();
    StringBuffer buffer = new StringBuffer();
    reader = new BufferedReader(new InputStreamReader(con.getInputStream()));
    String line = null;

    while((line = reader.readLine()) != null) {
    buffer.append(line);
    }

    if(result == null) {
    result = buffer.toString();
    }
    } catch (ConnectException arg27) {
    logger.error("uploadByInputream请求出现异常:连接超时,url:" + surl + arg27);
    } catch (Exception arg28) {
    logger.error("uploadByInputream请求出现异常,url:" + surl + arg28);
    } finally {
    if(reader != null) {
    try {
    reader.close();
    } catch (IOException arg26) {
    arg26.printStackTrace();
    }
    }

    }

    return result;
    }

    public static String uploadByInputream(InputStream fileStream, String fileName, String surl) {
    BufferedReader reader = null;
    String result = null;

    try {
    URL e = new URL(surl);
    Proxy proxy = ProxyUtil.getHttpProxy(surl);
    HttpURLConnection con = null;
    if(proxy == null) {
    con = (HttpURLConnection)e.openConnection();
    } else {
    con = (HttpURLConnection)e.openConnection(proxy);
    }

    con.setRequestMethod("POST");
    con.setDoInput(true);
    con.setDoOutput(true);
    con.setUseCaches(false);
    con.setRequestProperty("Connection", "Keep-Alive");
    con.setRequestProperty("Charset", "UTF-8");
    String BOUNDARY = "----------" + System.currentTimeMillis();
    con.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + BOUNDARY);
    StringBuilder sb = new StringBuilder();
    sb.append("--");
    sb.append(BOUNDARY);
    sb.append(" ");
    sb.append("Content-Disposition: form-data;name="file";filename="" + fileName + "" ");
    sb.append("Content-Type:application/octet-stream ");
    byte[] head = sb.toString().getBytes("utf-8");
    DataOutputStream out = new DataOutputStream(con.getOutputStream());
    out.write(head);
    DataInputStream in = new DataInputStream(fileStream);
    boolean bytes = false;
    byte[] bufferOut = new byte[1024];

    int bytes1;
    while((bytes1 = in.read(bufferOut)) != -1) {
    out.write(bufferOut, 0, bytes1);
    }

    in.close();
    byte[] foot = (" --" + BOUNDARY + "-- ").getBytes("utf-8");
    out.write(foot);
    out.flush();
    out.close();
    StringBuffer buffer = new StringBuffer();
    reader = new BufferedReader(new InputStreamReader(con.getInputStream()));
    String line = null;

    while((line = reader.readLine()) != null) {
    buffer.append(line);
    }

    if(result == null) {
    result = buffer.toString();
    }
    } catch (ConnectException arg27) {
    logger.error("uploadByInputream请求出现异常:连接超时,url:" + surl + arg27);
    } catch (Exception arg28) {
    logger.error("uploadByInputream请求出现异常,url:" + surl + arg28);
    } finally {
    if(reader != null) {
    try {
    reader.close();
    } catch (IOException arg26) {
    arg26.printStackTrace();
    }
    }

    }

    return result;
    }

    public static String getFileExt(String contentType) {
    String fileExt = "";
    if(!"image/jpeg".equals(contentType) && !"image/jpg".equals(contentType)) {
    if("image/png".equals(contentType)) {
    fileExt = ".png";
    } else if("audio/mpeg".equals(contentType)) {
    fileExt = ".mp3";
    } else if("audio/amr".equals(contentType)) {
    fileExt = ".amr";
    } else if("video/mp4".equals(contentType)) {
    fileExt = ".mp4";
    } else if("video/mpeg4".equals(contentType)) {
    fileExt = ".mp4";
    }
    } else {
    fileExt = ".jpg";
    }

    return fileExt;
    }
    }

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  • 原文地址:https://www.cnblogs.com/swite/p/10141693.html
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