标签：return String EncryptUtil param key res HttpUtil public 加密算法
1、CookieUtil
ublic class CookieUtil {
// 默认缓存时间,单位/秒, 2H
private static final int COOKIE_MAX_AGE = 60 * 60 * 2;
// 保存路径,根路径
private static final String COOKIE_PATH = "/";
/**
* 保存
*
* @param response
* @param key
* @param value
* @param ifRemember
*/
public static void set(HttpServletResponse response, String key, String value, boolean ifRemember) {
int age = ifRemember?COOKIE_MAX_AGE:-1;
set(response, key, value, null, COOKIE_PATH, age, true);
}
/**
* 保存
*
* @param response
* @param key
* @param value
* @param maxAge
*/
private static void set(HttpServletResponse response, String key, String value, String domain, String path, int maxAge, boolean isHttpOnly) {
Cookie cookie = new Cookie(key, value);
if (domain != null) {
cookie.setDomain(domain);
}
cookie.setPath(path);
cookie.setMaxAge(maxAge);
cookie.setHttpOnly(isHttpOnly);
response.addCookie(cookie);
}
/**
* 查询value
*
* @param request
* @param key
* @return
*/
public static String getValue(HttpServletRequest request, String key) {
Cookie cookie = get(request, key);
if (cookie != null) {
return cookie.getValue();
}
return null;
}
/**
* 查询Cookie
*
* @param request
* @param key
*/
private static Cookie get(HttpServletRequest request, String key) {
Cookie[] arr_cookie = request.getCookies();
if (arr_cookie != null && arr_cookie.length > 0) {
for (Cookie cookie : arr_cookie) {
if (cookie.getName().equals(key)) {
return cookie;
}
}
}
return null;
}
/**
* 删除Cookie
*
* @param request
* @param response
* @param key
*/
public static void remove(HttpServletRequest request, HttpServletResponse response, String key) {
Cookie cookie = get(request, key);
if (cookie != null) {
set(response, key, "", null, COOKIE_PATH, 0, true);
}
}
}
2、EncryptUtil(各种加密算法)
public class EncryptUtil {
private static final String MD5 = "MD5";
private static final String SHA1 = "SHA1";
private static final String HmacMD5 = "HmacMD5";
private static final String HmacSHA1 = "HmacSHA1";
private static final String DES = "DES";
private static final String AES = "AES";
/**
* 编码格式；默认使用uft-8
*/
public String charset = "utf-8";
/**
* DES
*/
public int keysizeDES = 0;
/**
* AES
*/
public int keysizeAES = 128;
public static volatile EncryptUtil me;
private EncryptUtil() {
//单例
}
//双重锁
public static EncryptUtil getInstance() {
if (me == null) {
synchronized (EncryptUtil.class) {
if (me == null) {
me = new EncryptUtil();
}
}
}
return me;
}
/**
* 使用MessageDigest进行单向加密（无密码）
*
* @param res 被加密的文本
* @param algorithm 加密算法名称
* @return
*/
private String messageDigest(String res, String algorithm) {
try {
MessageDigest md = MessageDigest.getInstance(algorithm);
byte[] resBytes = charset == null ? res.getBytes() : res.getBytes(charset);
return base64(md.digest(resBytes));
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
/**
* 使用KeyGenerator进行单向/双向加密（可设密码）
*
* @param res 被加密的原文
* @param algorithm 加密使用的算法名称
* @param key 加密使用的秘钥
* @return
*/
private String keyGeneratorMac(String res, String algorithm, String key) {
try {
SecretKey sk = null;
if (key == null) {
KeyGenerator kg = KeyGenerator.getInstance(algorithm);
sk = kg.generateKey();
} else {
byte[] keyBytes = charset == null ? key.getBytes() : key.getBytes(charset);
sk = new SecretKeySpec(keyBytes, algorithm);
}
Mac mac = Mac.getInstance(algorithm);
mac.init(sk);
byte[] result = mac.doFinal(res.getBytes());
return base64(result);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
/**
* 使用KeyGenerator双向加密，DES/AES，注意这里转化为字符串的时候是将2进制转为16进制格式的字符串，不是直接转，因为会出错
*
* @param res 加密的原文
* @param algorithm 加密使用的算法名称
* @param key 加密的秘钥
* @param keysize
* @param isEncode
* @return
*/
private String keyGeneratorES(String res, String algorithm, String key, int keysize, boolean isEncode) {
try {
KeyGenerator kg = KeyGenerator.getInstance(algorithm);
if (keysize == 0) {
byte[] keyBytes = charset == null ? key.getBytes() : key.getBytes(charset);
kg.init(new SecureRandom(keyBytes));
} else if (key == null) {
kg.init(keysize);
} else {
byte[] keyBytes = charset == null ? key.getBytes() : key.getBytes(charset);
kg.init(keysize, new SecureRandom(keyBytes));
}
SecretKey sk = kg.generateKey();
SecretKeySpec sks = new SecretKeySpec(sk.getEncoded(), algorithm);
Cipher cipher = Cipher.getInstance(algorithm);
if (isEncode) {
cipher.init(Cipher.ENCRYPT_MODE, sks);
byte[] resBytes = charset == null ? res.getBytes() : res.getBytes(charset);
return parseByte2HexStr(cipher.doFinal(resBytes));
} else {
cipher.init(Cipher.DECRYPT_MODE, sks);
return new String(cipher.doFinal(parseHexStr2Byte(res)));
}
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
private String base64(byte[] res) {
return Base64.encode(res);
}
/**
* 将二进制转换成16进制
*/
public static String parseByte2HexStr(byte buf[]) {
StringBuffer sb = new StringBuffer();
for (int i = 0; i < buf.length; i++) {
String hex = Integer.toHexString(buf[i] & 0xFF);
if (hex.length() == 1) {
hex = '0' + hex;
}
sb.append(hex.toUpperCase());
}
return sb.toString();
}
/**
* 将16进制转换为二进制
*/
public static byte[] parseHexStr2Byte(String hexStr) {
if (hexStr.length() < 1)
return null;
byte[] result = new byte[hexStr.length() / 2];
for (int i = 0; i < hexStr.length() / 2; i++) {
int high = Integer.parseInt(hexStr.substring(i * 2, i * 2 + 1), 16);
int low = Integer.parseInt(hexStr.substring(i * 2 + 1, i * 2 + 2), 16);
result[i] = (byte) (high * 16 + low);
}
return result;
}
/**
* md5加密算法进行加密（不可逆）
*
* @param res 需要加密的原文
* @return
*/
public String MD5(String res) {
return messageDigest(res, MD5);
}
/**
* md5加密算法进行加密（不可逆）
*
* @param res 需要加密的原文
* @param key 秘钥
* @return
*/
public String MD5(String res, String key) {
return keyGeneratorMac(res, HmacMD5, key);
}
/**
* 使用SHA1加密算法进行加密（不可逆）
*
* @param res 需要加密的原文
* @return
*/
public String SHA1(String res) {
return messageDigest(res, SHA1);
}
/**
* 使用SHA1加密算法进行加密（不可逆）
*
* @param res 需要加密的原文
* @param key 秘钥
* @return
*/
public String SHA1(String res, String key) {
return keyGeneratorMac(res, HmacSHA1, key);
}
/**
* 使用DES加密算法进行加密（可逆）
*
* @param res 需要加密的原文
* @param key 秘钥
* @return
*/
public String DESencode(String res, String key) {
return keyGeneratorES(res, DES, key, keysizeDES, true);
}
/**
* 对使用DES加密算法的密文进行解密（可逆）
*
* @param res 需要解密的密文
* @param key 秘钥
* @return
*/
public String DESdecode(String res, String key) {
return keyGeneratorES(res, DES, key, keysizeDES, false);
}
/**
* 使用AES加密算法经行加密（可逆）
*
* @param res 需要加密的密文
* @param key 秘钥
* @return
*/
public String AESencode(String res, String key) {
return keyGeneratorES(res, AES, key, keysizeAES, true);
}
/**
* 对使用AES加密算法的密文进行解密
*
* @param res 需要解密的密文
* @param key 秘钥
* @return
*/
public String AESdecode(String res, String key) {
return keyGeneratorES(res, AES, key, keysizeAES, false);
}
/**
* 使用异或进行加密
*
* @param res 需要加密的密文
* @param key 秘钥
* @return
*/
public String XORencode(String res, String key) {
byte[] bs = res.getBytes();
for (int i = 0; i < bs.length; i++) {
bs[i] = (byte) ((bs[i]) ^ key.hashCode());
}
return parseByte2HexStr(bs);
}
/**
* 使用异或进行解密
*
* @param res 需要解密的密文
* @param key 秘钥
* @return
*/
public String XORdecode(String res, String key) {
byte[] bs = parseHexStr2Byte(res);
for (int i = 0; i < bs.length; i++) {
bs[i] = (byte) ((bs[i]) ^ key.hashCode());
}
return new String(bs);
}
/**
* 直接使用异或（第一调用加密，第二次调用解密）
*
* @param res 密文
* @param key 秘钥
* @return
*/
public int XOR(int res, String key) {
return res ^ key.hashCode();
}
/**
* 使用Base64进行加密
*
* @param res 密文
* @return
*/
public String Base64Encode(String res) {
return Base64.encode(res.getBytes());
}
/**
* 使用Base64进行解密
*
* @param res
* @return
*/
public String Base64Decode(String res) {
return new String(Base64.decode(res));
}
public static void main(String[] args) {
String s = EncryptUtil.getInstance().MD5("admin", "feng");
System.out.println(s);
}
}
3、HttpUtil
public class HttpUtil {
/**
* 发送get 网络请求
*
* @param uri
* @return
*/
public static String get(String uri) {
CloseableHttpClient httpClient = null;
HttpGet get = new HttpGet(uri);
CloseableHttpResponse response = null;
try {
httpClient = HttpClients.createDefault();
response = httpClient.execute(get);
int statusCode = response.getStatusLine().getStatusCode();
if (statusCode == 200) {
HttpEntity entity = response.getEntity();
String result = EntityUtils.toString(entity, "UTF-8");
return result;
} else {
return null;
}
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
response.close();
httpClient.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return null;
}
/**
* get
*
* @param host
* @param path
* @param method
* @param headers
* @param querys
* @return
* @throws Exception
*/
public static HttpResponse doGet(String host, String path, String method,
Map<String, String> headers,
Map<String, String> querys)
throws Exception {
HttpClient httpClient = wrapClient(host);
HttpGet request = new HttpGet(buildUrl(host, path, querys));
for (Map.Entry<String, String> e : headers.entrySet()) {
request.addHeader(e.getKey(), e.getValue());
}
return httpClient.execute(request);
}
/**
* post form
*
* @param host
* @param path
* @param method
* @param headers
* @param querys
* @param bodys
* @return
* @throws Exception
*/
public static HttpResponse doPost(String host, String path, String method,
Map<String, String> headers,
Map<String, String> querys,
Map<String, String> bodys)
throws Exception {
HttpClient httpClient = wrapClient(host);
HttpPost request = new HttpPost(buildUrl(host, path, querys));
for (Map.Entry<String, String> e : headers.entrySet()) {
request.addHeader(e.getKey(), e.getValue());
}
if (bodys != null) {
List<NameValuePair> nameValuePairList = new ArrayList<NameValuePair>();
for (String key : bodys.keySet()) {
nameValuePairList.add(new BasicNameValuePair(key, bodys.get(key)));
}
UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(nameValuePairList, "utf-8");
formEntity.setContentType("application/x-www-form-urlencoded; charset=UTF-8");
request.setEntity(formEntity);
}
return httpClient.execute(request);
}
/**
* Post String
*
* @param host
* @param path
* @param method
* @param headers
* @param querys
* @param body
* @return
* @throws Exception
*/
public static HttpResponse doPost(String host, String path, String method,
Map<String, String> headers,
Map<String, String> querys,
String body)
throws Exception {
HttpClient httpClient = wrapClient(host);
HttpPost request = new HttpPost(buildUrl(host, path, querys));
for (Map.Entry<String, String> e : headers.entrySet()) {
request.addHeader(e.getKey(), e.getValue());
}
if (StringUtils.isNotBlank(body)) {
request.setEntity(new StringEntity(body, "utf-8"));
}
return httpClient.execute(request);
}
/**
* Post stream
*
* @param host
* @param path
* @param method
* @param headers
* @param querys
* @param body
* @return
* @throws Exception
*/
public static HttpResponse doPost(String host, String path, String method,
Map<String, String> headers,
Map<String, String> querys,
byte[] body)
throws Exception {
HttpClient httpClient = wrapClient(host);
HttpPost request = new HttpPost(buildUrl(host, path, querys));
for (Map.Entry<String, String> e : headers.entrySet()) {
request.addHeader(e.getKey(), e.getValue());
}
if (body != null) {
request.setEntity(new ByteArrayEntity(body));
}
return httpClient.execute(request);
}
/**
* Put String
*
* @param host
* @param path
* @param method
* @param headers
* @param querys
* @param body
* @return
* @throws Exception
*/
public static HttpResponse doPut(String host, String path, String method,
Map<String, String> headers,
Map<String, String> querys,
String body)
throws Exception {
HttpClient httpClient = wrapClient(host);
HttpPut request = new HttpPut(buildUrl(host, path, querys));
for (Map.Entry<String, String> e : headers.entrySet()) {
request.addHeader(e.getKey(), e.getValue());
}
if (StringUtils.isNotBlank(body)) {
request.setEntity(new StringEntity(body, "utf-8"));
}
return httpClient.execute(request);
}
/**
* Put stream
*
* @param host
* @param path
* @param method
* @param headers
* @param querys
* @param body
* @return
* @throws Exception
*/
public static HttpResponse doPut(String host, String path, String method,
Map<String, String> headers,
Map<String, String> querys,
byte[] body)
throws Exception {
HttpClient httpClient = wrapClient(host);
HttpPut request = new HttpPut(buildUrl(host, path, querys));
for (Map.Entry<String, String> e : headers.entrySet()) {
request.addHeader(e.getKey(), e.getValue());
}
if (body != null) {
request.setEntity(new ByteArrayEntity(body));
}
return httpClient.execute(request);
}
/**
* Delete
*
* @param host
* @param path
* @param method
* @param headers
* @param querys
* @return
* @throws Exception
*/
public static HttpResponse doDelete(String host, String path, String method,
Map<String, String> headers,
Map<String, String> querys)
throws Exception {
HttpClient httpClient = wrapClient(host);
HttpDelete request = new HttpDelete(buildUrl(host, path, querys));
for (Map.Entry<String, String> e : headers.entrySet()) {
request.addHeader(e.getKey(), e.getValue());
}
return httpClient.execute(request);
}
private static String buildUrl(String host, String path, Map<String, String> querys) throws UnsupportedEncodingException {
StringBuilder sbUrl = new StringBuilder();
sbUrl.append(host);
if (!StringUtils.isBlank(path)) {
sbUrl.append(path);
}
if (null != querys) {
StringBuilder sbQuery = new StringBuilder();
for (Map.Entry<String, String> query : querys.entrySet()) {
if (0 < sbQuery.length()) {
sbQuery.append("&");
}
if (StringUtils.isBlank(query.getKey()) && !StringUtils.isBlank(query.getValue())) {
sbQuery.append(query.getValue());
}
if (!StringUtils.isBlank(query.getKey())) {
sbQuery.append(query.getKey());
if (!StringUtils.isBlank(query.getValue())) {
sbQuery.append("=");
sbQuery.append(URLEncoder.encode(query.getValue(), "utf-8"));
}
}
}
if (0 < sbQuery.length()) {
sbUrl.append("?").append(sbQuery);
}
}
return sbUrl.toString();
}
private static HttpClient wrapClient(String host) {
HttpClient httpClient = new DefaultHttpClient();
if (host.startsWith("https://")) {
sslClient(httpClient);
}
return httpClient;
}
private static void sslClient(HttpClient httpClient) {
try {
SSLContext ctx = SSLContext.getInstance("TLS");
X509TrustManager tm = new X509TrustManager() {
public X509Certificate[] getAcceptedIssuers() {
return null;
}
public void checkClientTrusted(X509Certificate[] xcs, String str) {
}
public void checkServerTrusted(X509Certificate[] xcs, String str) {
}
};
ctx.init(null, new TrustManager[]{tm}, null);
SSLSocketFactory ssf = new SSLSocketFactory(ctx);
ssf.setHostnameVerifier(SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);
ClientConnectionManager ccm = httpClient.getConnectionManager();
SchemeRegistry registry = ccm.getSchemeRegistry();
registry.register(new Scheme("https", 443, ssf));
} catch (KeyManagementException ex) {
throw new RuntimeException(ex);
} catch (NoSuchAlgorithmException ex) {
throw new RuntimeException(ex);
}
}
标签：return,String,EncryptUtil,param,key,res,HttpUtil,public,加密算法 来源： https://www.cnblogs.com/xiaofeng-fu/p/12419601.html
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