我正在尝试使用我的用户名和密码从jira服务器获取问题详细信息，但我收到一条ssl错误，提示无法验证证书

那么如何验证证书

网址：http：local / 8080 / frr / hello

出现错误：

嵌套的异常是org.springframework.web.client.ResourceAccessException：GET请求的I / O错误为

“
https://jira.example.com/rest/api/2/issue/id
”：

sun.security.validator.ValidatorException：PKIX路径构建失败：sun.security.provider.certpath.SunCertPathBuilderException：无法找到到请求目标的有效认证路径；嵌套异常为javax.net.ssl.SSLHandshakeException：sun.security.validator.ValidatorException：PKIX路径构建失败：sun.security.provider.certpath.SunCertPathBuilderException：找不到根本原因的有效证书路径]，其根本原因是sun.security。
.provider.certpath.SunCertPathBuilderException：无法找到到请求目标的有效证书路径

我的Service.class代码

@Controller
public class Service{


    @RequestMapping("/hello")


     public String Data(ModelMap model){

        RestTemplate restTemplate = new RestTemplate();

        ResponseEntity<String> result = restTemplate.exchange("https://jira.example.com/rest/api/2/issue/id",  HttpMethod.GET, new HttpEntity<String>(createHeaders("username", "password")), String.class);

        model.addAttribute("message", result);


        return "helloworld";
    }

    RestTemplate restTemplate = new RestTemplate();
    HttpHeaders createHeaders( String username, String password ){
        HttpHeaders header =  new HttpHeaders();
        String auth = username + ":" + password;
        byte[] encodedAuth = Base64.encodeBase64(auth.getBytes(Charset.forName("US-ASCII")) );
        String base64Creds = "Basic " + new String( encodedAuth );
        header.add("Authorization", "Basic " + base64Creds);
        return header;
    }   
}