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我正在尝试动态生成要与每个 api 请求一起发送到 mpesa apis 的密码。根据文档，我需要首先将提供的密码与时间戳和商家 ID 连接起来，然后执行 sha256 以获得哈希密码，然后我应该将其编码为 base 64 但是在 Java 中执行此操作会返回错误的编码字符串，而类似的过程和代码在 PHP 中工作，我哪里出错了？

import org.apache.commons.codec.binary.Base64;
import org.apache.cxf.headers.Header;
import org.apache.cxf.jaxb.JAXBDataBinding;
import javax.xml.bind.JAXBException;
import javax.xml.namespace.QName;
import java.io.UnsupportedEncodingException;
import java.security.NoSuchAlgorithmException;
import java.util.ArrayList;
import java.util.List;



public class CheckoutHeaderBuilder {

    public static Header buildHeader(String merchantId, String passKey, String timestamp) throws JAXBException, NoSuchAlgorithmException, UnsupportedEncodingException {
    String hashedEncodedPass = Base64.encodeBase64String(MessageDigest.getInstance("SHA-256").digest((merchantId + passKey + timestamp).getBytes("utf-8")));

    List<Header> headers = new ArrayList<>();
    CheckOutHeader checkOutHeader = new CheckOutHeader();
    checkOutHeader.setTIMESTAMP(timestamp);
    checkOutHeader.setMERCHANTID(merchantId);
    checkOutHeader.setPASSWORD(hashedEncodedPass);
    return new Header(new QName("tns:ns", "CheckOutHeader"), checkOutHeader, new JAXBDataBinding(CheckOutHeader.class));

    }

}
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3 回答 3

1

嗨Japheth Ongeri Inkalimeva，您不必使用 SHA256 进行加密。发送Lipa na M-Pesa 在线支付 API请求时，您可能不需要设置新密码。

我已修改您的代码以删除 SHA256 加密。

import org.apache.commons.codec.binary.Base64;
import org.apache.cxf.headers.Header;
import org.apache.cxf.jaxb.JAXBDataBinding;
import javax.xml.bind.JAXBException;
import javax.xml.namespace.QName;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.List;


public class CheckoutHeaderBuilder  {

    public static Header buildHeader(String merchantId, String passKey, String timestamp) throws JAXBException, NoSuchAlgorithmException, UnsupportedEncodingException {
    String hashedEncodedPass = Base64.encodeBase64String((merchantId + passKey + timestamp).getBytes("utf-8"));

    List<Header> headers = new ArrayList<>();
    CheckOutHeader checkOutHeader = new CheckOutHeader();
    checkOutHeader.setTIMESTAMP(timestamp);
    checkOutHeader.setMERCHANTID(merchantId);
    checkOutHeader.setPASSWORD(hashedEncodedPass);
    return new Header(new QName("tns:ns", "CheckOutHeader"), checkOutHeader, new JAXBDataBinding(CheckOutHeader.class));

    }

}
于 2017-12-11T11:41:00.327 回答
1

示例编码 SHA256

import java.nio.charset.StandardCharsets;
import com.google.common.hash.Hashing;

String password = “123456”;
Hashing.sha256().hashString(password, StandardCharsets.UTF_8).toString();

希望能帮到你

于 2017-12-19T04:16:56.087 回答
0

您可以通过这种方式对 Mpesa 的密码进行编码：

import java.nio.charset.StandardCharsets;
import java.util.Base64;

public class MpesaUtils {

    public static String getMpesaEncodedPassword(String lipaNaMpesaShortCode,
                              String password, String timeStamp) {
        StringBuilder sb = new StringBuilder();
        sb.append(lipaNaMpesaShortCode).append(password).append(timeStamp);

        byte[] bytes = sb.toString().getBytes(StandardCharsets.ISO_8859_1);
        return Base64.getEncoder().encodeToString(bytes);
    }
}

使用示例：

    String lnmShortCode = "your lipa na mpesa short code here";
    String password = "your password here";
    String timeStamp = getTimeStamp();

    String encodedPassword = MpesaUtils.getMpesaEncodedPassword(lnmShortCode, password, timeStamp);
于 2019-06-28T06:33:13.427 回答