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easybest avatar easybest commented on July 20, 2024

can you show me your test case code?

from spring-data-mybatis.

kopax avatar kopax commented on July 20, 2024

I have created a repo https://github.com/kopax/spring-data-mybatis-testing

You need to checkout the "projection" branch

$ git clone [email protected]:kopax/spring-data-mybatis-testing.git
$ git checkout projection
$ ./gradlew build --info && java -jar build/libs/spring-data-mybatis-testing-0.1.0.war
$ curl http://localhost:8080/siteContents
{"timestamp":1486030282864,"status":500,"error":"Internal Server Error","exception":"org.springframework.http.converter.HttpMessageNotWritableException","message":"Could not write content: Projection type must be an interface! (through reference chain: org.springframework.hateoas.Resources[\"_embedded\"]->java.util.Collections$UnmodifiableMap[\"siteContents\"]->java.util.ArrayList[0]->org.springframework.data.rest.webmvc.json.PersistentEntityJackson2Module$ProjectionResource[\"content\"]->com.sun.proxy.$Proxy118[\"siteFunction\"]); nested exception is com.fasterxml.jackson.databind.JsonMappingException: Projection type must be an interface! (through reference chain: org.springframework.hateoas.Resources[\"_embedded\"]->java.util.Collections$UnmodifiableMap[\"siteContents\"]->java.util.ArrayList[0]->org.springframework.data.rest.webmvc.json.PersistentEntityJackson2Module$ProjectionResource[\"content\"]->com.sun.proxy.$Proxy118[\"siteFunction\"])","path":"/siteContents"}

I was not able to load the context to query my endpoints this is why I wasn't able to provide a sscce.org

from spring-data-mybatis.

easybest avatar easybest commented on July 20, 2024

also see:
https://github.com/hatunet/spring-data-mybatis-testing/tree/extendxml

from spring-data-mybatis.

kopax avatar kopax commented on July 20, 2024

I have tested in my project where I have a more complex object structure, The error is still the same :

I have updated the test case on branch extendxml

$ git clone git@github.com:kopax/spring-data-mybatis-testing.git
$ git checkout projection
$ ./gradlew build --info && java -jar build/libs/spring-data-mybatis-testing-0.1.0.war
$ curl http://localhost:8080/siteServices

Expect

HTTP 200

Result

2017-02-02 23:41:46.665  WARN 10352 --- [nio-8080-exec-1] .w.s.m.s.DefaultHandlerExceptionResolver : Failed to write HTTP message: org.springframework.http.converter.HttpMessageNotWritableException: Could not write content: Projection type must be an interface! (through reference chain: org.springframework.hateoas.Resources["_embedded"]->java.util.Collections$UnmodifiableMap["siteServices"]->java.util.ArrayList[0]->org.springframework.data.rest.webmvc.json.PersistentEntityJackson2Module$ProjectionResource["content"]->com.sun.proxy.$Proxy102["translateMessage"]); nested exception is com.fasterxml.jackson.databind.JsonMappingException: Projection type must be an interface! (through reference chain: org.springframework.hateoas.Resources["_embedded"]->java.util.Collections$UnmodifiableMap["siteServices"]->java.util.ArrayList[0]->org.springframework.data.rest.webmvc.json.PersistentEntityJackson2Module$ProjectionResource["content"]->com.sun.proxy.$Proxy102["translateMessage"])

I am using an interface TranslateMessageInterface for creating "translateMessage" which allow me to keep the logic of it in I18nId.java

It appeart that this line is an issue for the projection

from spring-data-mybatis.

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