我有一个BigInteger变量，例如chipertext:

println "chipherTotalAmount= "+chipertext 

def registerItem = RegisterItem.where { 
    (dateReceivedItem >= fromDate && dateReceivedItem < toDate) 
}.list() 
 
println "registerItem.size = "+registerItem.size() 
 
for (int x = 0; x < registerItem.size(); x++){ 
 
    RSA rsa =  new RSA() 
    println "x noata .clas = "+registerItem[x].noNota.class 
    // BigInteger plaintext = new BigInteger( registerItem[x].noNota.getBytes()) 
 
    publickey = new BigInteger(cifuser.publicKey) 
    newn = new BigInteger(cifuser.newn) 
    privatekey = new BigInteger(cifuser.privateKey) 
 
    BigInteger NoNota = new BigInteger(registerItem[x].noNota.getBytes()); 
    BigInteger chipherNoNota = rsa.encrypt(NoNota, publickey, newn); 
    println "chipherNoNota = "+chipherNoNota 
 
    def totalmountString = registerItem[x].totalAmount.toString() 
    println "totalmountString = "+totalmountString 
    println "totalmountString = "+totalmountString.class 
    BigInteger TotalAmount = new BigInteger(totalmountString.getBytes()); 
    BigInteger chipherTotalAmount = rsa.encrypt(TotalAmount, publickey, newn); 
    println "chipherTotalAmount = "+chipherTotalAmount 
 
    BigInteger SenderName = new BigInteger(registerItem[x].senderName.getBytes()); 
    BigInteger chipherSenderName = rsa.encrypt(SenderName, publickey, newn); 
    println "chipherSenderName = "+chipherSenderName 
 
    registerItem[x].noNota = chipherNoNota.toString() 
    registerItem[x].totalAmount = chipherTotalAmount //i cannot parse this to String because at my domain totalAmount was BigInteger 
    registerItem[x].senderName = chipherSenderName.toString() 
    registerItem[x].discard() 
} 

class RegisterItem implements Serializable{ 
 
    String noNota 
    City destination 
    Date dateReceivedItem 
 
    String senderName 
    String noTelpSender 
    String noHpSender 
    String emailSender 
    String addressSender 
    String descriptionSender 
 
    String receiverName 
    String noTlpReceiver 
    String noHpReceiver 
    String emailReceiver 
    String addressReceiver 
    String descriptionReceiver 
 
    String deleteFlag = "N" 
 
    BigInteger totalAmount 
 
    String isPay = "Y" 
 
    String useDefault = "Y" 
 
    Date dateCreated 
    Date lastUpdated 
 
    String updatedBy = "" 
    String createdBy 
 
    static constraints = { 
        noTelpSender(nullable:true,blank:true) 
        noHpSender(nullable:true,blank:true) 
        emailSender(nullable:true,blank:true) 
        addressSender(nullable:true,blank:true) 
        descriptionSender(nullable:true,blank:true) 
 
        noTlpReceiver(nullable:true,blank:true) 
        noHpReceiver(nullable:true,blank:true) 
        emailReceiver(nullable:true,blank:true) 
        addressReceiver(nullable:true,blank:true) 
        descriptionReceiver(nullable:true,blank:true) 
 
        createdBy(blank: false, maxSize: 50) 
        lastUpdated(nullable: true) 
    } 
 
    def beforeInsert = { 
        // createdBy = springSecurityService.principal.username 
        dateCreated = new Date() 
    } 
    def beforeUpdate = { 
        // updatedBy = springSecurityService.principal.username 
        lastUpdated = new Date() 
    } 
} 

请您参考如下方法:

如果我是您并且热衷于进行无损转换，那么我可以将其解析为String并使用以下形式将其作为String发送:

String.valueOf(bigInt); 

bigInt.toString();