SendGrid 发送了附件的新副本而不是本地文件

Question

我想使用 sendgrid 函数以编程方式发送动态生成的 excel 文件。下面的java程序成功地将excel文件作为附件发送，但它发送的是excel文件的新副本（新生成的），而不是我喜欢发送的文件。请让我知道我哪里出错了？

public static void main(String[] args) 抛出 IOException，InvalidFormatException {

    final String path = "C:\\Users\\src\\testData\\TestData.xlsx";

    byte[] bFile = Files.readAllBytes(new File(path).toPath());

    Attachments attachments3 = new Attachments();

    Base64 x = new Base64();

    String imageDataString = x.encodeAsString(bFile);

    attachments3.setContent(imageDataString);

    attachments3.setType("xlxs");// "application/pdf"

    attachments3.setFilename("TestData.xlsx");

    attachments3.setDisposition("attachment");

    attachments3.setContentId("Banner");

    Email from = new Email("[e-mail]");

    String subject = "Hello World from the SendGrid Java Library!";

    Email to = new Email("[e-mail]");

    Content content = new Content("text/plain", "Hello, Email!");

    Mail mail = new Mail(from, subject, to, content);

    mail.addAttachments(attachments3);

    SendGrid sg = new SendGrid("SG.EJLRKZEvE");

    Request request = new Request();

    try {

        request.setMethod(Method.POST);

        request.setEndpoint("mail/send");

        request.setBody(mail.build());

        Response response = sg.api(request);

        System.out.println(response.getStatusCode());

        System.out.println(response.getBody());

        System.out.println(response.getHeaders());

    } catch (IOException ex) {

        throw ex;

    }

}

Answer 1

我编写了以下测试类并成功发送/接收了一封带有 excel 附件内容的电子邮件。除了附件对象中设置的类型之外，代码与您的相同。在这里粘贴整个类，以便您也可以检查导入。我正在使用 sendgrid-java 4.3.0 版。在测试此代码之前，请确保移动到 4.3.0 版本。我还在下面截断了我的 api-key，所以用你的 api-key 替换它。import java.io.File;import java.io.IOException;import java.nio.file.Files;import org.apache.commons.codec.binary.Base64;import com.sendgrid.Attachments;import com.sendgrid.Content;import com.sendgrid.Email;import com.sendgrid.Mail;import com.sendgrid.Method;import com.sendgrid.Request;import com.sendgrid.Response;import com.sendgrid.SendGrid;public class TestSGEmail {  public static void main(String args[]) {    final String path = "/Users/macuser/testxls.xlsx";    byte[] bFile = null;    try {      bFile = Files.readAllBytes(new File(path).toPath());    } catch (IOException e) {      e.printStackTrace();    }    Attachments attachments3 = new Attachments();    Base64 x = new Base64();    String imageDataString = x.encodeAsString(bFile);    attachments3.setContent(imageDataString);    attachments3.setType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");    attachments3.setFilename("TestData.xlsx");    attachments3.setDisposition("attachment");    attachments3.setContentId("Banner");    Email from = new Email("[e-mail]");    String subject = "Hello World from the SendGrid Java Library!";    Email to = new Email("[e-mail]");    Content content = new Content("text/plain", "Hello, Email!");    Mail mail = new Mail(from, subject, to, content);    mail.addAttachments(attachments3);    SendGrid sg = new SendGrid("SG.tGX184I");    Request request = new Request();    try {      request.setMethod(Method.POST);      request.setEndpoint("mail/send");      request.setBody(mail.build());      Response response = sg.api(request);      System.out.println(response.getStatusCode());      System.out.println(response.getBody());      System.out.println(response.getHeaders());    } catch (IOException ex) {      ex.printStackTrace();    }  }}希望这可以帮助！