无法在Jmeter中保存RSA密钥

Question

我的用户定义的类上写有一些加密。采取相同的.jar文件。

课程：Test2

public static PublicKey getKey(String final_key) {
    try{
        byte[] byteKey = Base64.decode(key.getBytes(), Base64.DEFAULT);
        X509EncodedKeySpec X509publicKey = new X509EncodedKeySpec(byteKey);
        KeyFactory kf = KeyFactory.getInstance("RSA");
        Key k=kf.generatePublic(X509publicKey);
        return (PublicKey) k;
    }
    catch(Exception e){
        e.printStackTrace();
    }

    return null;
}
}

主类：

String public_key1="MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAzIhoSZkc7jyTXifjc2xNeZwZdlDWjX/t3zrLT6+mUlWOxVmS4CHNiGSQ5crJBG1TkWAwTPgjT5mbCvhkzSm8eTHsRciDLfgDx5GJL7dPTtIudwyv+CoyPUq02myuCAwnSwJLHDXO5bqKDZLv5yCA0IkpkMY/NDO71gt2RUNlhKy1Qd/BG+2nVRPl/hvTLnwkAX+0jGgE3NYqjdrI94K4sZBpZA+zjNdKt7r6wEg6cdxye4JDhgrJVtXcIvReNDZscK3OXSpK1w05cJ/iX+9gDY/l+jS4K6LZ3j9rND+Z6uyBd14qtgg34C3ftckNpPQgosp8f+VRb8oXVg8woWjwKwIDAQAB";
    String newKey=public_key1.replaceAll("\\\n", "");
    System.out.println(newKey);
    Key k=getKey(public_key1);
    System.out.println(k);
    System.out.println("After Encryption:" +encrypt(card1,k));

Jmeter代码：

import com.pack.testing.Test2;

String Original_String= ctx.getPreviousResult().getResponseDataAsString();
String Trim1=Original_String.substring(0, Original_String.lastIndexOf(","));
String Trim2=Trim1.replaceFirst("-----BEGIN PUBLIC KEY-----", "");
String Trim3=Trim2.replaceFirst("-----END PUBLIC KEY-----", "");
String[] parts = Trim3.split(":");
String myString = parts[1].substring(1, parts[1].length()-1);
String final_string=myString.replaceAll("\\\\n", "");
vars.putObject("publicKey", Test2.getKey(final_string));
log.info(publicKey);

在Main类中，我有硬编码的字符串。但实际上，该字符串可以通过jmeter进行更改，我需要将此字符串（从Jmeter接收）传递到该加密类中，以便在Jmeter中获取Key作为输出。