英文:
Deserialize json as quoted string in Jackson without annotations
问题
我有一个类似这样的类。
class MyClass {
String config;
// ... 其他字段，getter，setter ...
}
config 字符串将作为 JSON 从 REST 端点的请求体中获取，格式如下。
"config": {
"field1": "value1",
"field2": 2,
"field3": true
}
// MyClass 的其他字段
我需要对 MyClass 进行反序列化，使得上述 JSON 字符串以如下方式放入引号中。
"config": "{
\"field1\": \"value1\",
\"field2\": 2,
\"field3\": true
}"
由于这个类被其他项目使用，我不能修改它。因此，我不能在类上使用 @JsonDeserialize 或任何注解。
我尝试了将以下属性设置给 ObjectMapper
mapper.configure(JsonGenerator.Feature.QUOTE_FIELD_NAMES, false)
.configure(JsonParser.Feature.ALLOW_UNQUOTED_FIELD_NAMES, true);
是否有其他方法，也许使用 ObjectMapper 来以这种方式进行反序列化？我也在使用 Spring Boot，所以欢迎使用 Spring Boot Jackson 的方式来处理这个问题。
英文:
I have a class like this.
class MyClass {
String config;
// ... other fields, getters, setters ...
}
The config string will be coming as JSON from the REST endpoint in the request body as follows..
"config": {
"field1": "value1",
"field2": 2,
"field3": true
}
// other fields of MyClass
I need to deserialize MyClass in such a way that the above JSON string is put in quotes as follows.
"config": "{
\"field1\": \"value1\",
\"field2\": 2,
\"field3\": true
}"
I cannot modify this class as it is being used by other projects. So, I cannot use @JsonDeserialize or any annotations on the class.
I tried setting the following properties to ObjectMapper
mapper.configure(JsonGenerator.Feature.QUOTE_FIELD_NAMES, false)
.configure(JsonParser.Feature.ALLOW_UNQUOTED_FIELD_NAMES, true);
Is there any other way, perhaps using ObjectMapper to deserialize it that way. I am using Spring Boot also, so would welcome a Spring boot Jackson way of doing this.
答案1
得分: 1
你可以使用JsonNode，这是Jackson库的JsonNode类，com.fasterxml.jackson.databind.JsonNode是Jackson用于JSON的树模型（对象图模型），使用方法如下：
String content = jsonNode.get("data").textValue();
英文:
You can use JsonNode, the Jackson JsonNode class, com.fasterxml.jackson.databind.JsonNode is Jackson's tree model (object graph model) for JSON, use like that:
String content = jsonNode.get("data").textValue();
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