使用Jest操作ElasticSearch 报错:No time zone indicator问题的解决方案

问题描述: 在ElasticSearch中的时间格式是 yyyy-MM-dd'T'HH:mm:ss 的格式的,但是在使用Jest查询结果时 执行jestClient.execute(search) ,会提示错误:

com.google.gson.JsonSyntaxException: 2018-09-30T16:07:53
...
Caused by: java.text.ParseException: Failed to parse date ["2018-09-30T16:07:53"]: No time zone indicator
    at com.google.gson.internal.bind.util.ISO8601Utils.parse(ISO8601Utils.java:274) ~[gson-2.8.5.jar:na]
    at com.google.gson.DefaultDateTypeAdapter.deserializeToDate(DefaultDateTypeAdapter.java:149) ~[gson-2.8.5.jar:na]
    ... 48 common frames omitted

可以看到错误时Gson的错误,我们数据的格式和Jest去查询的格式不相符所致

看源码在io.searchbox.client.AbstractJestClient#ELASTIC_SEARCH_DATE_FORMAT 中定义了 public static final String ELASTIC_SEARCH_DATE_FORMAT = "yyyy-MM-dd'T'HH:mm:ssZ"; 与我们的数据格式不相符,因此需要去定义Gson的格式

解决方案: 将JestClient自己实现并加入spring的管理中,问题得到解决

/**
 * @author qi.liu
 * @create 2018-10-18 15:14
 * @desc 描述:
 **/
@Configuration
public class JestClientConfig {

    @Autowired(required = false)
    private JestClientFactory jestClientFactory;

    @Autowired
    private ElasticsearchJestProperties properties;

    @Bean
    public JestClient createJestClient() {
        GsonFactoryBean gsonFactoryBean = new GsonFactoryBean();
        gsonFactoryBean.setDateFormatPattern("yyyy-MM-dd'T'HH:mm:ss");
        gsonFactoryBean.afterPropertiesSet();
        HttpClientConfig.Builder builder = new HttpClientConfig.Builder(properties.getUri()).gson(gsonFactoryBean.getObject())
                .maxTotalConnection(properties.getMaxTotalConnection())
                .defaultMaxTotalConnectionPerRoute(properties.getDefaultMaxTotalConnectionPerRoute())
                .readTimeout(properties.getReadTimeout())
                .multiThreaded(properties.getMultiThreaded());

        JestClientFactory factory = jestClientFactory != null ? jestClientFactory : new JestClientFactory();
        factory.setHttpClientConfig(builder.build());
        return factory.getObject();
    }
}

时间被正确解析出来: