解决Spring boot中使用Gson，Swagger2 api-docs无法正常显示json问题

Jackson

Gson

api-docs

Jackson

{
"value": "{\"swagger\":\"2.0\",\"info\":{\"description\":\"this is restful api document\",\"version\":\"1.0.0\",\"title\":\"MyApp API文档\",\"contact\":{\"name\":\"xxx\",\"url\":\"http://xxxx.com\",\"email\":\"xxx@xxx.com\"}},\"host\":\"localhost:8080\",\"basePath\":\"/\",\"tags\":[{\"name\":\"login-controller\",\"description\":\"Login Controller\"},{\"name\":\"user-controller\",\"description\":\"User Controller\"}],\"paths\"
......

/swagger-ui.html

Gson

Gson

//***注意***：这里的`Json`是`springfox.documentation.spring.web.json.Json`包下的类

class springfoxJsonToGsonAdapter : JsonSerializer<Json> {
override fun serialize(json: Json, type: Type, jsc: JsonSerializationContext): JsonElement
= JsonParser().parse(json.value())
}

GsonHttpMessageConverter

//***注意***：`Json`同上，为`springfox.documentation.spring.web.json.Json`包下的类

class IGsonHttpMessageConverter : GsonHttpMessageConverter() {
init {
//自定义Gson适配器
super.setGson(GsonBuilder()
.registerTypeAdapter(Json::class.java, springfoxJsonToGsonAdapter())
.create())
}
}

http://localhost:8080/v2/api-docs

{
"swagger": "2.0",
"info": {
"description": "this is restful api document",
"version": "1.0.0",
"title": "MyApp API文档",
"contact": {
"name": "userName",
"url": "http://xxxuri.com",
"email": "mail@mailbox.com"
}
},
"host": "localhost:8080",
"basePath": "/",
"tags": [{
"name": "login-controller",
"description": "Login Controller"
}, {
"name": "user-controller",
"description": "User Controller"
}],
"paths": {
"/login/verify/{userId}": {
"get": {
"tags": [
"login-controller"
],
"summary": "askGroupsAndRoles",
"operationId": "askGroupsAndRolesUsingGET",
"consumes": [
"application/json"
],
"produces": [
"*/*"
],
"parameters": [{
"name": "userId",
"in": "path",
"description": "userId",
"required": true,
"type": "string"
}],
"responses": {
"200": {
"description": "OK"
},
"401": {
"description": "Unauthorized"
},
"403": {
"description": "Forbidden"
},
"404": {
"description": "Not Found"
}
}
}
}
}