Add exception handler

src/main/kotlin/top/fatweb/api/config/FilterConfig.kt

@@ -0,0 +1,18 @@
+package top.fatweb.api.config
+
+import org.springframework.boot.web.servlet.FilterRegistrationBean
+import org.springframework.context.annotation.Bean
+import org.springframework.context.annotation.Configuration
+import top.fatweb.api.filter.ExceptionFilter
+
+@Configuration
+class FilterConfig {
+    @Bean
+    fun exceptionFilterRegistrationBean(exceptionFilter: ExceptionFilter): FilterRegistrationBean<ExceptionFilter> {
+        val registrationBean = FilterRegistrationBean(exceptionFilter)
+        registrationBean.setBeanName("exceptionFilter")
+        registrationBean.order = -100
+
+        return registrationBean
+    }
+}

src/main/kotlin/top/fatweb/api/controller/ExceptionController.kt

@@ -0,0 +1,14 @@
+package top.fatweb.api.controller
+
+import jakarta.servlet.http.HttpServletRequest
+import org.springframework.web.bind.annotation.RequestMapping
+import org.springframework.web.bind.annotation.RestController
+
+@RestController
+@RequestMapping("/error")
+class ExceptionController {
+    @RequestMapping("/thrown")
+    fun thrown(request: HttpServletRequest) {
+        throw request.getAttribute("filter.error") as RuntimeException
+    }
+}

src/main/kotlin/top/fatweb/api/entity/common/BusinessCode.kt

@@ -0,0 +1,6 @@
+package top.fatweb.api.entity.common
+
+enum class BusinessCode(val code: Int) {
+    SYSTEM(100),
+    DATABASE(200)
+}

src/main/kotlin/top/fatweb/api/entity/common/ResponseCode.kt

@@ -0,0 +1,22 @@
+package top.fatweb.api.entity.common
+
+enum class ResponseCode(val code: Int) {
+    SYSTEM_OK(BusinessCode.SYSTEM, 0),
+    SYSTEM_LOGIN_SUCCESS(BusinessCode.SYSTEM, 20),
+    SYSTEM_PASSWORD_CHANGE_SUCCESS(BusinessCode.SYSTEM, 21),
+    SYSTEM_LOGOUT_SUCCESS(BusinessCode.SYSTEM, 22),
+    SYSTEM_TOKEN_RENEW_SUCCESS(BusinessCode.SYSTEM, 23),
+    SYSTEM_UNAUTHORIZED(BusinessCode.SYSTEM, 30),
+    SYSTEM_ACCESS_DENIED(BusinessCode.SYSTEM, 31),
+    SYSTEM_USER_DISABLE(BusinessCode.SYSTEM, 32),
+    SYSTEM_LOGIN_USERNAME_PASSWORD_ERROR(BusinessCode.SYSTEM, 33),
+    SYSTEM_OLD_PASSWORD_NOT_MATCH(BusinessCode.SYSTEM, 34),
+    SYSTEM_LOGOUT_FAILED(BusinessCode.SYSTEM, 35),
+    SYSTEM_TOKEN_ILLEGAL(BusinessCode.SYSTEM, 36),
+    SYSTEM_TOKEN_HAS_EXPIRED(BusinessCode.SYSTEM, 37),
+    SYSTEM_REQUEST_ILLEGAL(BusinessCode.SYSTEM, 40),
+    SYSTEM_ERROR(BusinessCode.SYSTEM, 50),
+    SYSTEM_TIMEOUT(BusinessCode.SYSTEM, 51);
+
+    constructor(businessCode: BusinessCode, code: Int) : this(businessCode.code * 100 + code)
+}

src/main/kotlin/top/fatweb/api/entity/common/ResponseResult.kt

@@ -0,0 +1,29 @@
+package top.fatweb.api.entity.common
+
+import io.swagger.v3.oas.annotations.media.Schema
+import java.io.Serializable
+
+class ResponseResult<T> private constructor(
+    @Schema(description = "响应码", defaultValue = "200")
+    val code: Int,
+
+    @Schema(description = "是否调用成功")
+    val success: Boolean,
+
+    @Schema(description = "信息")
+    val msg: String,
+
+    @Schema(description = "数据")
+    val data: T?
+) : Serializable {
+    companion object {
+        fun <T> build(code: ResponseCode, success: Boolean, msg: String, data: T?) =
+            ResponseResult(code.code, success, msg, data)
+
+        fun <T> success(code: ResponseCode = ResponseCode.SYSTEM_OK, msg: String = "success", data: T? = null) =
+            build(code, true, msg, data)
+
+        fun <T> fail(code: ResponseCode = ResponseCode.SYSTEM_ERROR, msg: String = "fail", data: T? = null) =
+            build(code, false, msg, data)
+    }
+}

src/main/kotlin/top/fatweb/api/filter/ExceptionFilter.kt

@@ -1,10 +1,18 @@
 package top.fatweb.api.filter
 
-import jakarta.servlet.*
-import java.lang.Exception
+import jakarta.servlet.Filter
+import jakarta.servlet.FilterChain
+import jakarta.servlet.ServletRequest
+import jakarta.servlet.ServletResponse
+import org.springframework.stereotype.Component
 
+@Component
 class ExceptionFilter : Filter {
-    override fun doFilter(servletRequest: ServletRequest?, servletResponse: ServletResponse?, filterChain: FilterChain?) {
+    override fun doFilter(
+        servletRequest: ServletRequest?,
+        servletResponse: ServletResponse?,
+        filterChain: FilterChain?
+    ) {
         try {
             filterChain!!.doFilter(servletRequest, servletResponse)
         } catch (e: Exception) {

src/main/kotlin/top/fatweb/api/handler/ExceptionHandler.kt

@@ -0,0 +1,35 @@
+package top.fatweb.api.handler
+
+import org.slf4j.Logger
+import org.slf4j.LoggerFactory
+import org.springframework.http.converter.HttpMessageNotReadableException
+import org.springframework.security.authentication.InsufficientAuthenticationException
+import org.springframework.web.bind.annotation.ExceptionHandler
+import org.springframework.web.bind.annotation.RestControllerAdvice
+import top.fatweb.api.entity.common.ResponseCode
+import top.fatweb.api.entity.common.ResponseResult
+
+@RestControllerAdvice
+class ExceptionHandler {
+    private val log: Logger = LoggerFactory.getLogger(this::class.java)
+
+    @ExceptionHandler(value = [Exception::class])
+    fun exceptionHandler(e: Exception): ResponseResult<*> {
+        return when (e) {
+            is InsufficientAuthenticationException -> {
+                log.debug(e.localizedMessage, e)
+                ResponseResult.fail(ResponseCode.SYSTEM_UNAUTHORIZED, e.localizedMessage, null)
+            }
+
+            is HttpMessageNotReadableException -> {
+                log.debug(e.localizedMessage, e)
+                ResponseResult.fail(ResponseCode.SYSTEM_REQUEST_ILLEGAL, e.localizedMessage.split(":")[0], null)
+            }
+
+            else -> {
+                log.error(e.localizedMessage, e)
+                ResponseResult.fail(ResponseCode.SYSTEM_ERROR, data = null)
+            }
+        }
+    }
+}