refactor: convert WebUtils to DataTransferService

src/main/kotlin/plus/maa/backend/config/accesslimit/AccessLimitInterceptor.kt

@@ -1,6 +1,5 @@
 package plus.maa.backend.config.accesslimit
 
-import com.fasterxml.jackson.databind.ObjectMapper
 import io.github.oshai.kotlinlogging.KotlinLogging
 import jakarta.servlet.http.HttpServletRequest
 import jakarta.servlet.http.HttpServletResponse
@@ -9,16 +8,16 @@ import org.springframework.http.HttpStatus
 import org.springframework.web.method.HandlerMethod
 import org.springframework.web.servlet.HandlerInterceptor
 import plus.maa.backend.common.utils.IpUtil
-import plus.maa.backend.common.utils.WebUtils
 import plus.maa.backend.controller.response.MaaResult.Companion.fail
+import plus.maa.backend.service.DataTransferService
 import java.util.concurrent.TimeUnit
 
 /**
  * @author Baip1995
  */
 class AccessLimitInterceptor(
     private val stringRedisTemplate: StringRedisTemplate,
-    private val objectMapper: ObjectMapper,
+    private val dataTransferService: DataTransferService,
 ) : HandlerInterceptor {
     private val log = KotlinLogging.logger { }
 
@@ -42,8 +41,7 @@ class AccessLimitInterceptor(
             // 请求过于频繁
             log.info { "$key 请求过于频繁" }
             val result = fail(HttpStatus.TOO_MANY_REQUESTS.value(), "请求过于频繁")
-            val json = objectMapper.writeValueAsString(result)
-            WebUtils.renderString(response, json, HttpStatus.TOO_MANY_REQUESTS.value())
+            dataTransferService.writeJson(response, result, HttpStatus.TOO_MANY_REQUESTS.value())
             return false
         }
 

src/main/kotlin/plus/maa/backend/config/security/AccessDeniedHandlerImpl.kt

@@ -1,25 +1,23 @@
 package plus.maa.backend.config.security
 
-import com.fasterxml.jackson.databind.ObjectMapper
 import jakarta.servlet.http.HttpServletRequest
 import jakarta.servlet.http.HttpServletResponse
 import org.springframework.http.HttpStatus
 import org.springframework.security.access.AccessDeniedException
 import org.springframework.security.web.access.AccessDeniedHandler
 import org.springframework.stereotype.Component
-import plus.maa.backend.common.utils.WebUtils.renderString
 import plus.maa.backend.controller.response.MaaResult.Companion.fail
+import plus.maa.backend.service.DataTransferService
 import java.io.IOException
 
 /**
  * @author AnselYuki
  */
 @Component
-class AccessDeniedHandlerImpl : AccessDeniedHandler {
+class AccessDeniedHandlerImpl(private val dataTransferService: DataTransferService) : AccessDeniedHandler {
     @Throws(IOException::class)
     override fun handle(request: HttpServletRequest, response: HttpServletResponse, accessDeniedException: AccessDeniedException) {
         val result = fail(HttpStatus.FORBIDDEN.value(), "权限不足")
-        val json = ObjectMapper().writeValueAsString(result)
-        renderString(response, json, HttpStatus.FORBIDDEN.value())
+        dataTransferService.writeJson(response, result, HttpStatus.FORBIDDEN.value())
     }
 }

src/main/kotlin/plus/maa/backend/config/security/AuthenticationEntryPointImpl.kt

@@ -1,27 +1,25 @@
 package plus.maa.backend.config.security
 
-import com.fasterxml.jackson.databind.ObjectMapper
 import jakarta.servlet.http.HttpServletRequest
 import jakarta.servlet.http.HttpServletResponse
 import org.springframework.http.HttpStatus
 import org.springframework.security.core.AuthenticationException
 import org.springframework.security.web.AuthenticationEntryPoint
 import org.springframework.stereotype.Component
-import plus.maa.backend.common.utils.WebUtils.renderString
 import plus.maa.backend.controller.response.MaaResult.Companion.fail
+import plus.maa.backend.service.DataTransferService
 import java.io.IOException
 
 /**
  * @author AnselYuki
  */
 @Component
 class AuthenticationEntryPointImpl(
-    private val objectMapper: ObjectMapper,
+    private val dataTransferService: DataTransferService,
 ) : AuthenticationEntryPoint {
     @Throws(IOException::class)
     override fun commence(request: HttpServletRequest, response: HttpServletResponse, authException: AuthenticationException) {
         val result = fail(HttpStatus.UNAUTHORIZED.value(), authException.message)
-        val json = objectMapper.writeValueAsString(result)
-        renderString(response, json, HttpStatus.UNAUTHORIZED.value())
+        dataTransferService.writeJson(response, result, HttpStatus.UNAUTHORIZED.value())
     }
 }

src/main/kotlin/plus/maa/backend/service/DataTransferService.kt

@@ -0,0 +1,25 @@
+package plus.maa.backend.service
+
+import com.fasterxml.jackson.databind.ObjectMapper
+import jakarta.servlet.http.HttpServletResponse
+import org.springframework.http.HttpStatus
+import org.springframework.stereotype.Service
+import org.springframework.util.MimeTypeUtils
+import java.io.IOException
+
+/**
+ * @author AnselYuki
+ */
+@Service
+class DataTransferService(private val objectMapper: ObjectMapper) {
+    fun <T> writeJson(response: HttpServletResponse, value: T, code: Int = HttpStatus.OK.value()) {
+        try {
+            response.status = code
+            response.contentType = MimeTypeUtils.APPLICATION_JSON_VALUE
+            response.characterEncoding = "UTF-8"
+            objectMapper.writeValue(response.outputStream, value)
+        } catch (e: IOException) {
+            e.printStackTrace()
+        }
+    }
+}