要在AWS SES发送邮件时更改模板链接，您可以使用AWS SDK提供的AWS SDK for Java来实现。下面是一个Java代码示例：

import com.amazonaws.auth.AWSStaticCredentialsProvider;
import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.regions.Regions;
import com.amazonaws.services.simpleemail.AmazonSimpleEmailService;
import com.amazonaws.services.simpleemail.AmazonSimpleEmailServiceClientBuilder;
import com.amazonaws.services.simpleemail.model.*;
import java.nio.charset.StandardCharsets;

public class AWSSendEmail {

    public static void main(String[] args) {
        String accessKey = "YOUR_ACCESS_KEY";
        String secretKey = "YOUR_SECRET_KEY";
        String templateName = "YOUR_TEMPLATE_NAME";
        String senderEmail = "YOUR_SENDER_EMAIL";
        String recipientEmail = "YOUR_RECIPIENT_EMAIL";
        String newLink = "YOUR_NEW_LINK";

        // Create the AWS SES client
        BasicAWSCredentials credentials = new BasicAWSCredentials(accessKey, secretKey);
        AmazonSimpleEmailService client = AmazonSimpleEmailServiceClientBuilder.standard()
                .withCredentials(new AWSStaticCredentialsProvider(credentials))
                .withRegion(Regions.US_EAST_1)
                .build();

        // Create the replacement tag for the link
        TemplateData templateData = new TemplateData().withName("link").withValue(newLink);

        // Create the message with the template and replacement data
        Message message = new Message()
                .withSubject(new Content().withCharset(StandardCharsets.UTF_8.name()).withData("Email subject"))
                .withBody(new Body()
                        .withText(new Content().withCharset(StandardCharsets.UTF_8.name()).withData("Email body"))
                        .withHtml(new Content().withCharset(StandardCharsets.UTF_8.name()).withData("Click here")));

        // Create the email request with the template name, sender, recipient, and message
        SendTemplatedEmailRequest request = new SendTemplatedEmailRequest()
                .withTemplateName(templateName)
                .withSource(senderEmail)
                .withDestination(new Destination().withToAddresses(recipientEmail))
                .withTemplateData(templateData)
                .withMessage(message);

        // Send the email
        SendTemplatedEmailResult result = client.sendTemplatedEmail(request);
        System.out.println("Email sent! Message ID: " + result.getMessageId());
    }
}

在上述代码示例中，您需要提供您的AWS访问密钥、模板名称、发件人电子邮件、收件人电子邮件以及新的链接。然后，使用SendTemplatedEmailRequest来发送带有模板和替换数据的电子邮件。