SpringBoot前后端数据传输加密

采用的算法为AES算法

1. 编写加密工具类

package com.pibigstar.utils;

import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.spec.SecretKeySpec;
import org.apache.commons.codec.binary.Base64;

/**
 * 前后端数据传输加密工具类
 * @author pibigstar
 *
 */
public class AesEncryptUtils {
	//可配置到Constant中，并读取配置文件注入
	private static final String KEY = "abcdef0123456789";
	
	//参数分别代表 算法名称/加密模式/数据填充方式
	private static final String ALGORITHMSTR = "AES/ECB/PKCS5Padding";

	/**
	 * 加密
	 * @param content 加密的字符串
	 * @param encryptKey key值
	 * @return
	 * @throws Exception
	 */
	public static String encrypt(String content, String encryptKey) throws Exception {
		KeyGenerator kgen = KeyGenerator.getInstance("AES");
		kgen.init(128);
		Cipher cipher = Cipher.getInstance(ALGORITHMSTR);
		cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(encryptKey.getBytes(), "AES"));
		byte[] b = cipher.doFinal(content.getBytes("utf-8"));
		return Base64.encodeBase64String(b);
	}

	/**
	 * 解密
	 * @param encryptStr 解密的字符串
	 * @param decryptKey 解密的key值
	 * @return
	 * @throws Exception
	 */
	public static String decrypt(String encryptStr, String decryptKey) throws Exception {
		KeyGenerator kgen = KeyGenerator.getInstance("AES");
		kgen.init(128);
		Cipher cipher = Cipher.getInstance(ALGORITHMSTR);
		cipher.init(Cipher.DECRYPT_MODE, new SecretKeySpec(decryptKey.getBytes(), "AES"));
		byte[] encryptBytes = Base64.decodeBase64(encryptStr);
		byte[] decryptBytes = cipher.doFinal(encryptBytes);
		return new String(decryptBytes);
	}
	
	public static String encrypt(String content) throws Exception {
		return encrypt(content, KEY);
	}
	public static String decrypt(String encryptStr) throws Exception {
		return decrypt(encryptStr, KEY);
	}
	

	public static void main(String[] args) throws Exception {
		String content = "派大星";
		System.out.println("加密前：" + content);

		String encrypt = encrypt(content, KEY);
		System.out.println("加密后：" + encrypt);

		String decrypt = decrypt(encrypt, KEY);
		System.out.println("解密后：" + decrypt);
	}
}

2. 前端

js 文件下载：https://pan.baidu.com/s/11LnXUnsMtGW5C8sycf2SDQ

导入 js 文件

<script type="text/javascript" src = "js/aes.js"></script>
<script type="text/javascript" src = "js/pad-zeropadding.js"></script>
<script type="text/javascript" src = "js/security.js"></script>

发送数据

function sendData() {
		alert("发送的数据："+Encrypt(JSON.stringify({name:"派大星"})));
		$.ajax({
	        type: "POST",
	        url:"/save",
	        data:Encrypt(JSON.stringify({name:"派大星"})),
	        dataType:'json',
	        contentType: "application/json",
	        success: function(resData) {
	        	alert("返回的数据："+resData);
	        	alert("解密之后："+Decrypt(resData));
	        	alert("解密之后转json对象："+JSON.parse(Decrypt(resData)).name);
	        }
		}); 
	}