SendGrid模板使用方式一

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1、问题描述

　　使用SendGrid模板Java调用发送样例。

2、操作方法

1、相关POM

       <dependency>
           <groupId>com.sendgrid</groupId>
           <artifactId>sendgrid-java</artifactId>
           <version>4.0.1</version>
       </dependency>
       <dependency>
           <groupId>com.alibaba</groupId>
           <artifactId>fastjson</artifactId>
           <version>1.2.62</version>
       </dependency>

2、sendGrid配置模板

菜单路径：Email API  -> Dynamic Templates  注意：变量使用{{}} 包起来

Hi {{name}}
You have canceled Subscription renewal. The subscription will still be available until {{date}}. Thanks for choosing our service!
Have questions? Contact US
{{phone}}

3、相关Code

package com.sendgrid;

import com.alibaba.fastjson.JSON;
import org.springframework.util.StringUtils;

import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;

public class SendGridAPI {

    public static void main(String[] args) throws Exception {
		//模板ID
        String templateId = "d-xxxx";
		//发件人
        String from = "xxxx@qq.com";
		//收件人
        String to = "mao2080@sina.com";
		//参数
        Map<String, String> params = new HashMap<>();
        params.put("name", "Jack Chen");
        params.put("date", "2020-04-07");
        params.put("phone", "0755-8888xxx");

        try {
			//SendGrid 秘钥
            String apiKey = "SG.YYY.XXX";
            SendGrid sg = new SendGrid(apiKey);
            Request request = new Request();
            request.setMethod(Method.POST);
            request.setEndpoint("mail/send");
            request.setBody(getEmailContent(from, to, templateId, params));
            Response response = sg.api(request);
            System.out.println(response.getStatusCode());
            System.out.println(response.getBody());
            System.out.println(response.getHeaders());
        } catch (Exception ex) {
            throw ex;
        }
    }

    /**
     * 组织邮件内容模板
     * @param from 发件方
     * @param to 收件方
     * @param templateId 模板ID
     * @param params 参数
     * @return
     */
    private static String getEmailContent(String from, String to, String templateId, Map<String, String> params){
        Map<String, Object> dataMap = new HashMap<>();
        dataMap.put("from", new Email(from));
        dataMap.put("template_id", templateId);
        Map<String, Object> persMap = new HashMap<>();
        persMap.put("to", Arrays.asList(new Email(to)));
        persMap.put("dynamic_template_data", params);
        dataMap.put("personalizations", Arrays.asList(persMap));
        return JSON.toJSONString(dataMap);
    }
}

3、其他方式

　　https://www.cnblogs.com/mao2080/p/12655939.html

4、参考网站

　　https://github.com/sendgrid/sendgrid-java/blob/master/USE_CASES.md