可以使用serde_json::Value::as_object_mut方法将Value对象转换为可变的对象,并使用insert方法添加新的字段。例如: 代码语言:txt 复制 use serde_json::json; let mut object = value.as_object_mut().unwrap(); object.insert("new_field".to_string(), json!("new_value")); 最后,将修改后的V...
of the key-value pairs. This module serializes IndexMap as a sequence of (key, value) elements instead, in order. From what I understand, feeding a HashMap and IndexMap to serde_json::to_string end up serializing in a different structure (not talking about order) For a HashMap<String...
json转struct let tmp: Value = json!([{"k":"v"}]); let v: Structxx = serde_json::from_value(tmp) .map_err(op: |err: Error|{ format!( "xx: {}", err.to_string() ) }).unwrap(); struct转json,再转Value,反序列化成了Object(HashMap<String, JsonValue>) let json_str = ser...
我们先看看看serde_json会如何将i32序列化为JSON格式 // 将value转为JSON格式的字符串 pub fn to_string<T>(value: &T) -> Result<String> where T: ?Sized + Serialize, { let vec = tri!(to_vec(value)); // tri!相当于使用"?" let string = unsafe String::from_utf8_unchecked(vec) }...
serde_json是一个用于序列化和反序列化JSON数据的Rust库。它提供了一组简单的API,可以将Rust数据结构转换为JSON格式的字符串,并将JSON字符串转换回Rust数据结构。 在使用...
}"#;letvalue: Value = serde_json::from_str(data).unwrap();println!("{}, {} years old, like {}", value["name"], value["age"], value["languages"][0] ); } 总结 使用serde 将一个字符串转为 Value 对象,并且从里面获取了想要的值。
languages:Vec<String>, }, }fnmain() {lethuman= Animal::Human { name:"JiangBo".to_owned(), age:44, languages:vec!["Rust".to_owned(),"Java".to_owned()], };println!("{}", serde_json::to_string(&human).unwrap());// {"type":"Human","name":"JiangBo","age":44,"languages...
//Bytesmut value (debug print): b"\"[\\\"Test string\\\",\\\"32a8e12d-69d2-421d-a52e-1ee76cc03ed5\\\"]\"" let (log, operation_state_id) = serde_json::from_slice::<(String, Uuid)>(&serialized_tuple)?; 但我得到以下错误: ERROR actix_http::response] Internal Server Erro...
Create an instance of your custom type based on what was passed in, and return a JSON in the form of text: let my_data: MyDataType = MyDataType{name: name.to_string(), id: idn, timetz: tz}; let my_data_serialized = to_string(&my_data); ...
.getName())withanyother key serializer that you may use props.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, GlueSchemaRegistryKafkaSerializer.class.getName()); props.put(AWSSchemaRegistryConstants.AWS_REGION,"us-east-2"); properties.put(AWSSchemaRegistryConstants.DATA_FORMAT,"JSON"); // OR"...