在一般的web框架中、比如springboot、或者springcloud。再或者struct2都会有统一错误拦截器。playframework也不例外。
使用
application.conf 添加
play.http.errorHandler = "ErrorHandler"
ErrorHandler.scala 类
import java.util.concurrent.{CompletableFuture, CompletionStage}
import exception.AuthException
import play.http.HttpErrorHandler
import play.libs.Json
import play.mvc
import play.mvc.{Http, Results}
class ErrorHandler extends HttpErrorHandler {
override def onClientError(request: Http.RequestHeader, statusCode: Int, message: String): CompletionStage[mvc.Result] = {
CompletableFuture.completedFuture(
Results.status(statusCode, "A client error occurred: " + message))
}
override def onServerError(request: Http.RequestHeader, exception: Throwable): CompletionStage[mvc.Result] = {
CompletableFuture.completedFuture(
exception match {
case e: AuthException =>
val json = Json.newObject()
json.put("code", "error")
json.put("msg", e.getMessage)
Results.badRequest(json)
case default@_ =>
val json = Json.newObject()
json.put("code", "error")
json.put("msg", default.getMessage)
Results.internalServerError(json)
}
)
}
}
定义一个授权错误类
class AuthException(msg: String) extends Exception(msg) {
}
UserController.scala 中测试
def login: Action[AnyContent] = Action {
request =>
if(true){
throw new AuthException("登录失效")
}
说明：Json.newObject() 返回的数据类型为application/json
