the fasterxml.jackson.core package is used to parse the map data and return it in json format. The specific method is that the return method called by writeValue (Writer w, Object value), is universal, and there is no problem with the return of other businesses, that is, there is an API that returns this error. There is nothing special about taking a look at the data in map. I don"t know why this happens. The jackson version is 2.7.1
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SpringBoot is configured with jackson format, but it does not take effect spring: datasource: url: jdbc:mysql: localhost:3306 test?useSSL=false username: root password: root driver-class-name: com.mysql.jdbc.Driver platform: mysq...
there is no problem with the junit unit test, but there is an error when you pack it into a war package and run it in tomcat and use postman to send a simulation request. this is the code part. You want to implement the hot loading function of the jar ...
spring boot automatically formats attributes of time type as string (String), when controller outputs an object as @ ResponseBody. I don t want to do this. I want to calculate time at the front end, so I want spring to output the properties of time typ...
< H2 > demand < H2 > what I want to do is to trigger (.size) lazily load all the data of the associated table when needed, do not load the data of the associated table when not needed, and do whatever I want. < H2 > question < H2 > my table entity...
< H2 > how to use jackson to deserialize nested json fields to objects < H2 > { "id":1, "name":"Bitcoin", "quote":{ "USD":{ "price":9283.92, "market_cap":158055024432 } } } deserial...
The project uses springboot1.3.7 and the default jackson-databind version: 2.8.5, but now we have a dependency package that needs to use jackson-databind2.9.6, otherwise an error will be reported: java.lang.NoSuchMethodError: com.fasterxml.jackson.data...