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SSM實(shí)現(xiàn)mysql數(shù)據(jù)庫(kù)賬號(hào)密碼密文登錄功能

更新時(shí)間：2019年08月09日 10:20:09 作者：zsq_fengchen

這篇文章主要介紹了SSM實(shí)現(xiàn)mysql數(shù)據(jù)庫(kù)賬號(hào)密碼密文登錄功能，本文分為三步給大家介紹的非常詳細(xì)，具有一定的參考借鑒價(jià)值 ,需要的朋友可以參考下

引言

咱們公司從事的是信息安全涉密應(yīng)用的一些項(xiàng)目研發(fā)一共有分為三步，相比較于一般公司和一般的項(xiàng)目,對(duì)于信息安全要求更加嚴(yán)格，領(lǐng)導(dǎo)要求數(shù)據(jù)量和用戶的用戶名及密碼信息都必需是要密文配置和存儲(chǔ)的，這就涉及到j(luò)dbc.properties文件中的數(shù)據(jù)庫(kù)的用戶名和密碼也是一樣的，需要配置問密文,在連接的時(shí)候再加載解密為明文進(jìn)行數(shù)據(jù)庫(kù)的連接操作，以下就是實(shí)現(xiàn)過程,一共有分為三步。

一、創(chuàng)建DESUtil類

提供自定義密鑰，加密解密的方法。

package com.hzdy.DCAD.common.util;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import java.security.Key;
import java.security.SecureRandom;
/**
 * Created by Wongy on 2019/8/8.
 */
public class DESUtil {
  private static Key key;
  //自己的密鑰
  private static String KEY_STR = "mykey";
  static {
    try {
      KeyGenerator generator = KeyGenerator.getInstance("DES");
      SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG");
      secureRandom.setSeed(KEY_STR.getBytes());
      generator.init(secureRandom);
      key = generator.generateKey();
      generator = null;
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }
  /**
   * 對(duì)字符串進(jìn)行加密，返回BASE64的加密字符串
   *
   * @param str
   * @return
   * @see [類、類#方法、類#成員]
   */
  public static String getEncryptString(String str) {
    BASE64Encoder base64Encoder = new BASE64Encoder();
    try {
      byte[] strBytes = str.getBytes("UTF-8");
      Cipher cipher = Cipher.getInstance("DES");
      cipher.init(Cipher.ENCRYPT_MODE, key);
      byte[] encryptStrBytes = cipher.doFinal(strBytes);
      return base64Encoder.encode(encryptStrBytes);
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }
  /**
   * 對(duì)BASE64加密字符串進(jìn)行解密
   *
   */
  public static String getDecryptString(String str) {
    BASE64Decoder base64Decoder = new BASE64Decoder();
    try {
      byte[] strBytes = base64Decoder.decodeBuffer(str);
      Cipher cipher = Cipher.getInstance("DES");
      cipher.init(Cipher.DECRYPT_MODE, key);
      byte[] encryptStrBytes = cipher.doFinal(strBytes);
      return new String(encryptStrBytes, "UTF-8");
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }
  public static void main(String[] args) {
    String name = "dbuser";
    String password = "waction2016";
    String encryname = getEncryptString(name);
    String encrypassword = getEncryptString(password);
    System.out.println("encryname : " + encryname);
    System.out.println("encrypassword : " + encrypassword);
    System.out.println("name : " + getDecryptString(encryname));
    System.out.println("password : " + getDecryptString(encrypassword));
  }
}

二、創(chuàng)建EncryptPropertyPlaceholderConfigurer類

建立與配置文件的關(guān)聯(lián)。

package com.hzdy.DCAD.common.util;
import org.springframework.beans.factory.config.PropertyPlaceholderConfigurer;
public class EncryptPropertyPlaceholderConfigurer extends PropertyPlaceholderConfigurer {
  //屬性需與配置文件的KEY保持一直
  private String[] encryptPropNames = {"jdbc.username", "jdbc.password"};
  @Override
  protected String convertProperty(String propertyName, String propertyValue) {
    //如果在加密屬性名單中發(fā)現(xiàn)該屬性 
    if (isEncryptProp(propertyName)) {
      String decryptValue = DESUtil.getDecryptString(propertyValue);
      System.out.println(decryptValue);
      return decryptValue;
    } else {
      return propertyValue;
    }
  }
  private boolean isEncryptProp(String propertyName) {
    for (String encryptName : encryptPropNames) {
      if (encryptName.equals(propertyName)) {
        return true;
      }
    }
    return false;
  }
}

三、修改配置文件 jdbc.properties

#加密配置之前
#jdbc.driver=com.mysql.jdbc.Driver
#jdbc.user=root
#jdbc.password=root
#jdbc.url=jdbc:mysql://localhost:3306/bookstore
#加密配置之后
jdbc.driver=com.mysql.jdbc.Driver
jdbc.user=Ov4j7fKiCzY=
jdbc.password=Ov4j7fKiCzY=
jdbc.url=jdbc:mysql://localhost:3306/bookstore

四、修改spring-content.xml配置文件

將spring-context中的
 <context:property-placeholder location="classpath:.properties" />
 修改為
 <bean class="com.hzdy.DCAD.common.util.EncryptPropertyPlaceholderConfigurer"p:locations="classpath:*.properties"/>
 //注意只能存在一個(gè)讀取配置文件的bean，否則系統(tǒng)只會(huì)讀取最前面的

注意:如果發(fā)現(xiàn)配置密文的username和password可以加載并解密成功,但是最后連接的時(shí)候還是以密文連接并報(bào)錯(cuò)，這可能涉及到內(nèi)存預(yù)加載的問題，項(xiàng)目一啟動(dòng)，程序會(huì)加密密文的用戶名和密碼，就算最后解密成功了，最后連接數(shù)據(jù)庫(kù)讀取的卻還是密文，這時(shí)候我們可以自己重寫連接池的方法，讓spring-content.xml加載重寫的連接池方法，并在連接的時(shí)候再提前進(jìn)行解密。

package com.thinkgem.jeesite.common.encrypt;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.Properties;
import javax.security.auth.callback.PasswordCallback;
import com.alibaba.druid.util.DruidPasswordCallback;
/**
 */
@SuppressWarnings("serial")
public class DruidDataSource extends com.alibaba.druid.pool.DruidDataSource {
  public PhysicalConnectionInfo createPhysicalConnection() throws SQLException {
    String url = this.getUrl();
    Properties connectProperties = getConnectProperties();
    String user;
    if (getUserCallback() != null) {
      user = getUserCallback().getName();
    } else {
      user = getUsername();
    }
    //DES解密
    user = DESUtils.getDecryptString(user);
    String password = DESUtils.getDecryptString(getPassword());
    PasswordCallback passwordCallback = getPasswordCallback();
    if (passwordCallback != null) {
      if (passwordCallback instanceof DruidPasswordCallback) {
        DruidPasswordCallback druidPasswordCallback = (DruidPasswordCallback) passwordCallback;
        druidPasswordCallback.setUrl(url);
        druidPasswordCallback.setProperties(connectProperties);
      }
      char[] chars = passwordCallback.getPassword();
      if (chars != null) {
        password = new String(chars);
      }
    }
    Properties physicalConnectProperties = new Properties();
    if (connectProperties != null) {
      physicalConnectProperties.putAll(connectProperties);
    }
    if (user != null && user.length() != 0) {
      physicalConnectProperties.put("user", user);
    }
    if (password != null && password.length() != 0) {
      physicalConnectProperties.put("password", password);
    }
    Connection conn;
    long connectStartNanos = System.nanoTime();
    long connectedNanos, initedNanos, validatedNanos;
    try {
      conn = createPhysicalConnection(url, physicalConnectProperties);
      connectedNanos = System.nanoTime();
      if (conn == null) {
        throw new SQLException("connect error, url " + url + ", driverClass " + this.driverClass);
      }
      initPhysicalConnection(conn);
      initedNanos = System.nanoTime();
      validateConnection(conn);
      validatedNanos = System.nanoTime();
      setCreateError(null);
    } catch (SQLException ex) {
      setCreateError(ex);
      throw ex;
    } catch (RuntimeException ex) {
      setCreateError(ex);
      throw ex;
    } catch (Error ex) {
      createErrorCount.incrementAndGet();
      throw ex;
    } finally {
      long nano = System.nanoTime() - connectStartNanos;
      createTimespan += nano;
    }
    return new PhysicalConnectionInfo(conn, connectStartNanos, connectedNanos, initedNanos, validatedNanos);
  }
}

修改spring-content.xml文件的數(shù)據(jù)庫(kù)連接數(shù)配置

#修改之前
<!-- <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close"> -->
#修改之后
<bean id="dataSource"class="com.thinkgem.jeesite.common.encrypt.DruidDataSource" 
    init-method="init" destroy-method="close">
    <!-- 數(shù)據(jù)源驅(qū)動(dòng)類可不寫，Druid默認(rèn)會(huì)自動(dòng)根據(jù)URL識(shí)別DriverClass -->
    <property name="driverClassName" value="${jdbc.driver}" />
    <!-- 基本屬性 url、user、password -->
    <property name="url" value="${jdbc.url}" />
    <property name="username" value="${jdbc.username}" />
    <property name="password" value="${jdbc.password}" />

  </bean>

至此，數(shù)據(jù)庫(kù)密文配置連接就完成了!

總結(jié)

以上所述是小編給大家介紹的SSM實(shí)現(xiàn)mysql數(shù)據(jù)庫(kù)賬號(hào)密碼密文登錄功能,希望對(duì)大家有所幫助，如果大家有任何疑問請(qǐng)給我留言，小編會(huì)及時(shí)回復(fù)大家的。在此也非常感謝大家對(duì)腳本之家網(wǎng)站的支持！
如果你覺得本文對(duì)你有幫助，歡迎轉(zhuǎn)載，煩請(qǐng)注明出處，謝謝！

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