首页 > 代码库 > Java前端Rsa公钥加密，后端Rsa私钥解密（支持字符和中文）
Java前端Rsa公钥加密，后端Rsa私钥解密（支持字符和中文）
Base64工具类，可以让rsa编码的乱码变成一串字符序列
package com.utils;import java.io.ByteArrayInputStream;import java.io.ByteArrayOutputStream;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.InputStream;import java.io.OutputStream;import it.sauronsoftware.base64.Base64;/** *//** * <p> * BASE64编码解码工具包 * </p> * <p> * 依赖javabase64-1.3.1.jar * </p> * * @author IceWee * @date 2012-5-19 * @version 1.0 */public class Base64Utils { /** */ /** * 文件读取缓冲区大小 */ private static final int CACHE_SIZE = 1024; /** */ /** * <p> * BASE64字符串解码为二进制数据 * </p> * * @param base64 * @return * @throws Exception */ public static byte[] decode(String base64) throws Exception { return Base64.decode(base64.getBytes()); } /** */ /** * <p> * 二进制数据编码为BASE64字符串 * </p> * * @param bytes * @return * @throws Exception */ public static String encode(byte[] bytes) throws Exception { return new String(Base64.encode(bytes)); } /** */ /** * <p> * 将文件编码为BASE64字符串 * </p> * <p> * 大文件慎用，可能会导致内存溢出 * </p> * * @param filePath * 文件绝对路径 * @return * @throws Exception */ public static String encodeFile(String filePath) throws Exception { byte[] bytes = fileToByte(filePath); return encode(bytes); } /** */ /** * <p> * BASE64字符串转回文件 * </p> * * @param filePath * 文件绝对路径 * @param base64 * 编码字符串 * @throws Exception */ public static void decodeToFile(String filePath, String base64) throws Exception { byte[] bytes = decode(base64); byteArrayToFile(bytes, filePath); } /** */ /** * <p> * 文件转换为二进制数组 * </p> * * @param filePath * 文件路径 * @return * @throws Exception */ public static byte[] fileToByte(String filePath) throws Exception { byte[] data = http://www.mamicode.com/new byte[0]; File file = new File(filePath); if (file.exists()) { FileInputStream in = new FileInputStream(file); ByteArrayOutputStream out = new ByteArrayOutputStream(2048); byte[] cache = new byte[CACHE_SIZE]; int nRead = 0; while ((nRead = in.read(cache)) != -1) { out.write(cache, 0, nRead); out.flush(); } out.close(); in.close(); data = out.toByteArray(); } return data; } /** */ /** * <p> * 二进制数据写文件 * </p> * * @param bytes * 二进制数据 * @param filePath * 文件生成目录 */ public static void byteArrayToFile(byte[] bytes, String filePath) throws Exception { InputStream in = new ByteArrayInputStream(bytes); File destFile = new File(filePath); if (!destFile.getParentFile().exists()) { destFile.getParentFile().mkdirs(); } destFile.createNewFile(); OutputStream out = new FileOutputStream(destFile); byte[] cache = new byte[CACHE_SIZE]; int nRead = 0; while ((nRead = in.read(cache)) != -1) { out.write(cache, 0, nRead); out.flush(); } out.close(); in.close(); }}
RsaUtil工具类，可以调用里面的方法，产生公钥私钥对，和采用公钥加密，私钥加密等
package com.utils;import java.io.ByteArrayOutputStream;import java.security.Key;import java.security.KeyFactory;import java.security.KeyPair;import java.security.KeyPairGenerator;import java.security.PrivateKey;import java.security.PublicKey;import java.security.Signature;import java.security.interfaces.RSAPrivateKey;import java.security.interfaces.RSAPublicKey;import java.security.spec.PKCS8EncodedKeySpec;import java.security.spec.X509EncodedKeySpec;import java.util.HashMap;import java.util.Map;import javax.crypto.Cipher;/** *//** * <p> * RSA公钥/私钥/签名工具包 * </p> * <p> * 罗纳德·李维斯特（Ron [R]ivest）、阿迪·萨莫尔（Adi [S]hamir）和伦纳德·阿德曼（Leonard [A]dleman） * </p> * <p> * 字符串格式的密钥在未在特殊说明情况下都为BASE64编码格式<br/> * 由于非对称加密速度极其缓慢，一般文件不使用它来加密而是使用对称加密，<br/> * 非对称加密算法可以用来对对称加密的密钥加密，这样保证密钥的安全也就保证了数据的安全 * </p> * * @author IceWee * @date 2012-4-26 * @version 1.0 */public class RSAUtils { /** */ /** * 加密算法RSA */ public static final String KEY_ALGORITHM = "RSA"; /** */ /** * 签名算法 */ public static final String SIGNATURE_ALGORITHM = "MD5withRSA"; /** */ /** * 获取公钥的key */ private static final String PUBLIC_KEY = "RSAPublicKey"; /** */ /** * 获取私钥的key */ private static final String PRIVATE_KEY = "RSAPrivateKey"; /** */ /** * RSA最大加密明文大小 */ private static final int MAX_ENCRYPT_BLOCK = 117; /** */ /** * RSA最大解密密文大小 */ private static final int MAX_DECRYPT_BLOCK = 128; /** */ /** * <p> * 生成密钥对(公钥和私钥) * </p> * * @return * @throws Exception */ public static Map<String, Object> genKeyPair() throws Exception { KeyPairGenerator keyPairGen = KeyPairGenerator.getInstance(KEY_ALGORITHM); keyPairGen.initialize(1024); KeyPair keyPair = keyPairGen.generateKeyPair(); RSAPublicKey publicKey = (RSAPublicKey) keyPair.getPublic(); RSAPrivateKey privateKey = (RSAPrivateKey) keyPair.getPrivate(); Map<String, Object> keyMap = new HashMap<String, Object>(2); keyMap.put(PUBLIC_KEY, publicKey); keyMap.put(PRIVATE_KEY, privateKey); return keyMap; } /** */ /** * <p> * 用私钥对信息生成数字签名 * </p> * * @param data * 已加密数据 * @param privateKey * 私钥(BASE64编码) * * @return * @throws Exception */ public static String sign(byte[] data, String privateKey) throws Exception { byte[] keyBytes = Base64Utils.decode(privateKey); PKCS8EncodedKeySpec pkcs8KeySpec = new PKCS8EncodedKeySpec(keyBytes); KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM); PrivateKey privateK = keyFactory.generatePrivate(pkcs8KeySpec); Signature signature = Signature.getInstance(SIGNATURE_ALGORITHM); signature.initSign(privateK); signature.update(data); return Base64Utils.encode(signature.sign()); } /** */ /** * <p> * 校验数字签名 * </p> * * @param data * 已加密数据 * @param publicKey * 公钥(BASE64编码) * @param sign * 数字签名 * * @return * @throws Exception * */ public static boolean verify(byte[] data, String publicKey, String sign) throws Exception { byte[] keyBytes = Base64Utils.decode(publicKey); X509EncodedKeySpec keySpec = new X509EncodedKeySpec(keyBytes); KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM); PublicKey publicK = keyFactory.generatePublic(keySpec); Signature signature = Signature.getInstance(SIGNATURE_ALGORITHM); signature.initVerify(publicK); signature.update(data); return signature.verify(Base64Utils.decode(sign)); } /** */ /** * <P> * 私钥解密 * </p> * * @param encryptedData * 已加密数据 * @param privateKey * 私钥(BASE64编码) * @return * @throws Exception */ public static byte[] decryptByPrivateKey(byte[] encryptedData, String privateKey) throws Exception { byte[] keyBytes = Base64Utils.decode(privateKey); PKCS8EncodedKeySpec pkcs8KeySpec = new PKCS8EncodedKeySpec(keyBytes); KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM); Key privateK = keyFactory.generatePrivate(pkcs8KeySpec); Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm()); cipher.init(Cipher.DECRYPT_MODE, privateK); int inputLen = encryptedData.length; ByteArrayOutputStream out = new ByteArrayOutputStream(); int offSet = 0; byte[] cache; int i = 0; // 对数据分段解密 while (inputLen - offSet > 0) { if (inputLen - offSet > MAX_DECRYPT_BLOCK) { cache = cipher.doFinal(encryptedData, offSet, MAX_DECRYPT_BLOCK); } else { cache = cipher.doFinal(encryptedData, offSet, inputLen - offSet); } out.write(cache, 0, cache.length); i++; offSet = i * MAX_DECRYPT_BLOCK; } byte[] decryptedData = http://www.mamicode.com/out.toByteArray(); out.close(); return decryptedData; } /** */ /** * <p> * 公钥解密 * </p> * * @param encryptedData * 已加密数据 * @param publicKey * 公钥(BASE64编码) * @return * @throws Exception */ public static byte[] decryptByPublicKey(byte[] encryptedData, String publicKey) throws Exception { byte[] keyBytes = Base64Utils.decode(publicKey); X509EncodedKeySpec x509KeySpec = new X509EncodedKeySpec(keyBytes); KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM); Key publicK = keyFactory.generatePublic(x509KeySpec); Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm()); cipher.init(Cipher.DECRYPT_MODE, publicK); int inputLen = encryptedData.length; ByteArrayOutputStream out = new ByteArrayOutputStream(); int offSet = 0; byte[] cache; int i = 0; // 对数据分段解密 while (inputLen - offSet > 0) { if (inputLen - offSet > MAX_DECRYPT_BLOCK) { cache = cipher.doFinal(encryptedData, offSet, MAX_DECRYPT_BLOCK); } else { cache = cipher.doFinal(encryptedData, offSet, inputLen - offSet); } out.write(cache, 0, cache.length); i++; offSet = i * MAX_DECRYPT_BLOCK; } byte[] decryptedData = http://www.mamicode.com/out.toByteArray(); out.close(); return decryptedData; } /** */ /** * <p> * 公钥加密 * </p> * * @param data * 源数据 * @param publicKey * 公钥(BASE64编码) * @return * @throws Exception */ public static byte[] encryptByPublicKey(byte[] data, String publicKey) throws Exception { byte[] keyBytes = Base64Utils.decode(publicKey); X509EncodedKeySpec x509KeySpec = new X509EncodedKeySpec(keyBytes); KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM); Key publicK = keyFactory.generatePublic(x509KeySpec); // 对数据加密 Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm()); cipher.init(Cipher.ENCRYPT_MODE, publicK); int inputLen = data.length; ByteArrayOutputStream out = new ByteArrayOutputStream(); int offSet = 0; byte[] cache; int i = 0; // 对数据分段加密 while (inputLen - offSet > 0) { if (inputLen - offSet > MAX_ENCRYPT_BLOCK) { cache = cipher.doFinal(data, offSet, MAX_ENCRYPT_BLOCK); } else { cache = cipher.doFinal(data, offSet, inputLen - offSet); } out.write(cache, 0, cache.length); i++; offSet = i * MAX_ENCRYPT_BLOCK; } byte[] encryptedData = http://www.mamicode.com/out.toByteArray(); out.close(); return encryptedData; } /** */ /** * <p> * 私钥加密 * </p> * * @param data * 源数据 * @param privateKey * 私钥(BASE64编码) * @return * @throws Exception */ public static byte[] encryptByPrivateKey(byte[] data, String privateKey) throws Exception { byte[] keyBytes = Base64Utils.decode(privateKey); PKCS8EncodedKeySpec pkcs8KeySpec = new PKCS8EncodedKeySpec(keyBytes); KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM); Key privateK = keyFactory.generatePrivate(pkcs8KeySpec); Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm()); cipher.init(Cipher.ENCRYPT_MODE, privateK); int inputLen = data.length; ByteArrayOutputStream out = new ByteArrayOutputStream(); int offSet = 0; byte[] cache; int i = 0; // 对数据分段加密 while (inputLen - offSet > 0) { if (inputLen - offSet > MAX_ENCRYPT_BLOCK) { cache = cipher.doFinal(data, offSet, MAX_ENCRYPT_BLOCK); } else { cache = cipher.doFinal(data, offSet, inputLen - offSet); } out.write(cache, 0, cache.length); i++; offSet = i * MAX_ENCRYPT_BLOCK; } byte[] encryptedData = http://www.mamicode.com/out.toByteArray(); out.close(); return encryptedData; } /** */ /** * <p> * 获取私钥 * </p> * * @param keyMap * 密钥对 * @return * @throws Exception */ public static String getPrivateKey(Map<String, Object> keyMap) throws Exception { Key key = (Key) keyMap.get(PRIVATE_KEY); return Base64Utils.encode(key.getEncoded()); } /** */ /** * <p> * 获取公钥 * </p> * * @param keyMap * 密钥对 * @return * @throws Exception */ public static String getPublicKey(Map<String, Object> keyMap) throws Exception { Key key = (Key) keyMap.get(PUBLIC_KEY); return Base64Utils.encode(key.getEncoded()); } /** * java端公钥加密 */ public static String encryptedDataOnJava(String data, String PUBLICKEY) { try { data = Base64Utils.encode(encryptByPublicKey(data.getBytes(), PUBLICKEY)); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } return data; } /** * java端私钥解密 */ public static String decryptDataOnJava(String data, String PRIVATEKEY) { String temp = ""; try { byte[] rs = Base64Utils.decode(data); temp = new String(RSAUtils.decryptByPrivateKey(rs, PRIVATEKEY),"UTF-8"); //以utf-8的方式生成字符串 } catch (Exception e) { e.printStackTrace(); } return temp; }}
json工具类
package com.utils;import com.google.gson.Gson;import com.google.gson.GsonBuilder;import com.google.gson.JsonNull;public class JsonUtil { private static Gson gson = new GsonBuilder().setDateFormat("yyyy-MM-dd").serializeNulls().create(); /** * @MethodName : toJson * @Description : 将对象转为JSON串，此方法能够满足大部分需求 * @param src * :将要被转化的对象 * @return :转化后的JSON串 */ public static String toJson(Object src) { if (src =http://www.mamicode.com/= null) { return gson.toJson(JsonNull.INSTANCE); } return gson.toJson(src); }}
到这一步我们的工具类准备的差不多了，可以开始进入我们的主题了，java端Rsa测试类和web端交互的demo了
Rsa测试java测试类
package com.test;import java.util.Map;import org.junit.Test;import com.utils.Base64Utils;import com.utils.RSAUtils;public class RSATester { static String publicKey; static String privateKey; static { try { Map<String, Object> keyMap = RSAUtils.genKeyPair(); publicKey = RSAUtils.getPublicKey(keyMap); privateKey = RSAUtils.getPrivateKey(keyMap); System.err.println("公钥: \n\r" + publicKey); System.err.println("私钥： \n\r" + privateKey); } catch (Exception e) { e.printStackTrace(); } } public static void main(String[] args) throws Exception { testJavaRsa(); } @Test public void tests() throws Exception { String data = "hNYdT0/8wxljGvLQVPYUDeoWS217rmB5msKOljb6OBsOhdL1Domxt6Sy3BqdGqS3StGJuZuQ9wEFzGdyoTQ7IRiC0gRrkLuxvCUq8FANt1JpJCBqvzLdQD/ygCjkJMWWkMU4EFUW3xYkAsidqM8Zynhpk+mdja3789Ng4s68xJI="; String privateKey = "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"; byte[] rs = Base64Utils.decode(data); String r1 = new String(RSAUtils.decryptByPrivateKey(rs, privateKey)); System.out.println("\r\n\r\n" + r1 + "okb"); } static void testSign() throws Exception { System.err.println("私钥加密——公钥解密"); String source = "32232"; System.out.println("原文字：\r\n" + source); byte[] data =http://www.mamicode.com/ source.getBytes(); byte[] encodedData =http://www.mamicode.com/ RSAUtils.encryptByPrivateKey(data, privateKey); System.out.println("加密后：\r\n" + new String(encodedData)); byte[] decodedData =http://www.mamicode.com/ RSAUtils.decryptByPublicKey(encodedData, publicKey); String target = new String(decodedData); System.out.println("解密后: \r\n" + target); System.err.println("私钥签名——公钥验证签名"); String sign = RSAUtils.sign(encodedData, privateKey); System.err.println("签名:\r" + sign); boolean status = RSAUtils.verify(encodedData, publicKey, sign); System.err.println("验证结果:\r" + status); } static void test() throws Exception { System.err.println("公钥加密——私钥解密"); String source = "这是一行没有任何意义的文字，你看完了等于没看，不是吗？"; System.out.println("\r加密前文字：\r\n" + source); byte[] data =http://www.mamicode.com/ source.getBytes(); byte[] encodedData =http://www.mamicode.com/ RSAUtils.encryptByPublicKey(data, publicKey); System.out.println("加密后文字：\r\n" + new String(encodedData)); System.out.println("----------------:base64处理：" + Base64Utils.encode(encodedData)); byte[] decodedData =http://www.mamicode.com/ RSAUtils.decryptByPrivateKey(encodedData, privateKey); String target = new String(decodedData); System.out.println("解密后文字: \r\n" + target); } /* * 测试自己封装java端加密和解密的方法 */ static void testJavaRsa() { String PUBLICKEY = "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCcd+0zTY9Gn94iqkQJTlxYnEnCeFsLkk0a7hoAvi2B74VzDVV3xH0ZO9RkXvo1SgCB+uzbEWdrgQkzTqyjfTtgOguu3OnkVxIMJF34ibchTY0LWHGxq1m2gLGuVVqrlu1LtdV0X7xo/5zc8Mr+46veWb86kSpqe6rOAm69WWo5GwIDAQAB"; String PRIVATEKEY = "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"; String data = "你好啊，冯老师！s 223 1@324234234sfsfsf"; data = RSAUtils.encryptedDataOnJava(data, PUBLICKEY); System.out.println("加密数据：" + data); System.out.println("解密数据：" + RSAUtils.decryptDataOnJava(data, PRIVATEKEY)); } static void testFrontEncrptAndAfterDecrypt() { String PRIVATEKEY = "MIICdgIBADANBgkqhkiG9w0BAQEFAASCAmAwggJcAgEAAoGBAIn2zWqU7K/2qm5pOpq5bp9R+3MTnStWTfJU9nC/Vo7UKH9dITPvrELCTK+qlqpx5Fes+l0GY7n6u4n4jyiw4ejsvkZYQ5ww477yLOn2FcoEGuZEwPgSCmfTST0OFUgQqn+/J11k9L92jEHyieE3qmhMkMt0UsVUSJwx/nZxo30ZAgMBAAECgYBD3YHigeuEC4R+14iaf8jo2j0kuGtB3Cxvnlez0otTqw1YyYkBsU49cLKkXvfKVEgM0Ow/QltgKvSBxCE31PrrDka5TygVMqqA/IM7NrDvjUcGLjyoeNmLA8660fWcDxUTlAGN5kxIvUATayVwKVflpWPWu0FPKsWrZustnEo+4QJBAMCmYsWqAKWYMVRXFP3/XGRfio8DV793TOckyBSN9eh8UhgoZyT3u7oeHmDJEwm4aNMHlg1Pcdc6tNsvi1FRCiUCQQC3VNzfF4xOtUgX7vWPL8YVljLuXmy12iVYmg6ofu9l31nwM9FLQ1TRFglvF5LWrIXTQb07PgGd5DJMAQWGsqLlAkAPE7Z9M73TN+L8b8hDzJ1leZi1cpSGdoa9PEKwYR/SrxAZtefEm+LEQSEtf+8OfrEtetWCeyo0pvKKiOEFXytFAkEAgynL/DC0yXsZYUYtmYvshHU5ayFTVagFICbYZeSrEo+BoUDxdI9vl0fU6A5NmBlGhaZ65G+waG5jLc1tTrlvoQJAXBEoPcBNAosiZHQfYBwHqU6mJ9/ZacJh3MtJzGGebfEwJgtln5b154iANqNWXpySBLvkK+Boq7FYRiD83pqmUg=="; String data = "FBGU7sQfpSfCgB2hqFuIqkivEUHVRHD8JFdyxYeWqQHsTj9UEuVmvi28n1fOHRwW+3aZD3ttdzfUHWiXD2NErcX/CYs5BtSXT7RcJfWWcXvegq5BBDEAJCADWCRdYnblN+SLUC+ctDXcLw4xmjwAajowSzhCfY/lU3TdnJjO488="; System.out.println("解密数据：" + RSAUtils.decryptDataOnJava(data, PRIVATEKEY)); }}
前端加密jsp页面
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Insert title here</title><script src=http://www.mamicode.com/"js/jquery-2.1.3.js"></script><script src=http://www.mamicode.com/"js/jsencrypt.min.js"></script></head><body> <script type="text/javascript"> $(function() { $("#bt").click( function() { var encrypt = new JSEncrypt(); encrypt.setPublicKey($("#publickey").val()); encrypt.setPrivateKey($("#privatekey").val()); var password = $("#password").val(); var uname = $("#uname").val(); password = encrypt.encrypt(password); uname = encrypt.encrypt(uname); $("#jmName").val(uname); $("#jmPasswrod").val(password); var jsonData =http://www.mamicode.com/ { "password" : password, "uname" : uname }; $.post("jiemi.do", jsonData, function(result) { alert("解密的用户名：" + result.uname + "\n" + "解密的密码：" + result.password); }, ‘json‘); }); }); </script> <h2>公钥：</h2> <textarea id="publickey" rows="5" cols="45">MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCJ9s1qlOyv9qpuaTqauW6fUftzE50rVk3yVPZwv1aO1Ch/XSEz76xCwkyvqpaqceRXrPpdBmO5+ruJ+I8osOHo7L5GWEOcMOO+8izp9hXKBBrmRMD4Egpn00k9DhVIEKp/vyddZPS/doxB8onhN6poTJDLdFLFVEicMf52caN9GQIDAQAB </textarea> <h2>私钥</h2> <textarea rows="10" cols="45" id="privatekey">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</textarea> <hr /> <form> 用户名：<input type="text" name="uname" id="uname" /> 密码：<input type="text" name="password" id="password" /> <hr /> 用户密文 <textarea id="jmName"> </textarea> 密码密文 <textarea id="jmPasswrod"> </textarea> <input type="button" id="bt" value=http://www.mamicode.com/"提交" /> </form></body></html>
后端servlet解密
package com;import java.io.IOException;import java.util.HashMap;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import com.utils.JsonUtil;import com.utils.RSAUtils;/** * Servlet implementation class JieMiServlet */public class JieMiServlet extends HttpServlet { private static final long serialVersionUID = 1L; protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doPost(request, response); } protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // 获取数据 String uname = request.getParameter("uname"); String password = request.getParameter("password"); String PRIVATEKEY = "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"; // 解密 uname = RSAUtils.decryptDataOnJava(uname, PRIVATEKEY); password = RSAUtils.decryptDataOnJava(password, PRIVATEKEY); // 用map封装返回的数据 HashMap<String, Object> result = new HashMap<String, Object>(); result.put("uname", uname); result.put("password", password); response.getWriter().print(JsonUtil.toJson(result)); }}
需要注意的是：前端需要加入jquery-2.1.3.js和jsencrypt.min.js库，后端需要加入javabase64-1.3.1.jar和gson-2.5.jar(方便json返回)
项目演示代码链接：项目demo下载
github的项目链接地址
Java前端Rsa公钥加密，后端Rsa私钥解密（支持字符和中文）
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