public static final String[] WORDS = new String[] { "To be, or not to be,--that is the question:--", "Whether 'tis nobler in the mind to suffer", "The slings and arrows of outrageous fortune", "Or to take arms against a sea of troubles,", "And by opposing end them?--To ...
试下这些函数代捷此回答整理自钉群“【③群】Apache Flink China
Apache Flink SQL目前还不支持直接解析JSON字符串并将其转换为预期的数据类型。你可以在Flink SQL中使用STRING_TO_ARRAY函数将字符串转换为数组。 以下是一个示例,展示了如何将字符串转换为数组: SELECT STRING_TO_ARRAY(JSON_QUERY('{"a":[{"c":"c1"},{"c":"c2"}]}', 'lax $.a[].c'), ',') ...
case class Student(id: Int, name: String, addr: String, sex: String) val mapper: ObjectMapper = new ObjectMapper() //将对象转换成字符串 def toJsonString(T: Object): String = { mapper.registerModule(DefaultScalaModule) mapper.writeValueAsString(T) } def main(args: Array[String]): Unit ...
toJSONString()); sourceContext.collect(dataObj); } } @Override public void cancel() { } }; // 创建运行环境 StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment(); // 构建数据源 DataStreamSource<JSONObject> dataStreamSource = env.addSource(dataSource); // 构建sink...
public static String toJson(Object value) { return gson.toJson(value); } public static String toJsonDisableHtmlEscaping(Object value) { return disableHtmlEscapingGson.toJson(value); } } 6、kafka生产者producer 注:kafka先批量生成student的json数据 ...
string1 NOT SIMILAR TO string2 [ ESCAPE char ] 如果string1与SQL正则表达式string2不匹配返回true。 value1 IN (value2 [, value3]* ) 在给定列表 (value2, value3, …) 中存在 value1返回true。 value1 NOT IN (value2 [, value3]* ) ...
JSONObject result=newJSONObject(); result.put("status", 0); result.put("msg", ""); result.put("data",data);returnresult.toJSONString(); } @RequestMapping("/sugar/api/gmv/c3")publicString gmvC3(@RequestParam(value = "date", defaultValue = "0")intdate, ...
(amt<200){ctx.output(outputTag1,value);//把金额小于200的数据发送到旁路流1中}elseif(amt>=200&&amt<500){ctx.output(outputTag2,value);//把金额大于200、小于500的数据发送到旁路流2中}else{ctx.output(outputTag3,JSON.toJSONString(value));//把金额大于500的数据发送到旁路流2中,并且转成JSON...
* Desc: json工具类 * Created by suddenly on 2020-05-05 */publicclassGsonUtil{privatefinalstaticGsongson=newGson();publicstatic<T>TfromJson(Stringvalue,Class<T>type){returngson.fromJson(value,type);}publicstaticStringtoJson(Objectvalue){returngson.toJson(value);}publicstaticbyte[]toJSONBytes(...