Base64编码格式

package com.xcx.exam.utils;

import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;

import java.io.IOException;
import java.util.Base64;
/**

• @Description: Base64编码测试类 解码前端base64编码格式

• @Author: liuxiangpeng

• @CreateDate: 2020/4/15 8:54

• @UpdateUser: liuxaingpeng

• @UpdateDate: 2020/4/15 8:54

• @UpdateRemark: 修改内容

• @Version: 1.0
  */
  public class ImoocBase64 {
  public static final String toEncode=“admin”;

  /**

  • jdk8以前

  • @throws IOException
    */
    public static void TestBase64Old() throws IOException {
    //编码
    BASE64Encoder encoder=new BASE64Encoder();
    String encoded = encoder.encode(toEncode.getBytes());
    System.out.println(“编码后：”+encoded);

    //解码
    BASE64Decoder decoder=new BASE64Decoder();
    byte[] decoded = decoder.decodeBuffer(encoded);
    System.out.println(“解码后：”+new String(decoded));

  }

  /**

  • jdk1.8后
    /
    public static String TestBase64New(String toEncode){
    //编码
    /String encoded = Base64.getEncoder().encodeToString(toEncode.getBytes());
    System.out.println(“编码后：”+encoded)/;
    //解码
    byte[] decoded = java.util.Base64.getDecoder().decode(toEncode.getBytes());
    / System.out.println(“解码后：”+new String(decoded));*/
    return new String(decoded);
    }

  public static void main(String[] args) throws IOException {
  /System.out.println(“Before JDK1.8：”);
  TestBase64Old();
  System.out.println(“After JDK1.8：”);
  TestBase64New();/
  String s =TestBase64New(“YWRtaW4=”);
  System.out.println(s+"====");
  }
  }

前端参数base64转码:
//获取参数值
var name=KaTeX parse error: Expected 'EOF', got '#' at position 3: ("#̲user_name").val…("#password").val();
//进行编码
var user = window.btoa(name);
var pasw = window.btoa(pass);

后台接口解码:
//使用base64解码前端参数
ImoocBase64 base = new ImoocBase64();
String usern = base.TestBase64New(user);
String passw= base.TestBase64New(pasw);