全局异常处理器负责将抛出的异常,以统一的格式返给前端。在这里起主要作用的注解是@RestControllerAdvice。
@RestControllerAdvice主要配合@ExceptionHandler使用,统一处理异常情况。
1、@RestControllerAdvice 注解,可以用于定义@ExceptionHandler、@InitBinder、@ModelAttribute,并应用到所有@RequestMapping中。
2、@RestControllerAdvice 是组件注解,他使得其实现类能够被classpath扫描自动发现,如果应用是通过MVC命令空间或MVC Java编程方式配置,那么该特性默认是自动开启的。
例如:
当抛出BizException时,会自动返回ReturnResult.error(…)。这样,在真正的业务中,我们只需要返回ReturnResult.success(…)就可以了。
目录结构:
具体代码:
import com.sugon.cloud.lowcode.result.ReturnResult;import lombok.extern.slf4j.Slf4j;import org.mybatis.spring.MyBatisSystemException;import org.springframework.web.HttpRequestMethodNotSupportedException;import org.springframework.web.bind.annotation.ExceptionHandler;import org.springframework.web.bind.annotation.ResponseBody;import org.springframework.web.bind.annotation.RestControllerAdvice;import javax.naming.AuthenticationException;import javax.servlet.http.HttpServletRequest;import static com.sugon.cloud.lowcode.constants.SplitCharacter.LEFT_PARENTHESES;import static com.sugon.cloud.lowcode.constants.SplitCharacter.RIGHT_PARENTHESES;import static com.sugon.cloud.lowcode.result.CodeMessageEnum.*;/** *全局异常 */@RestControllerAdvice@Slf4jpublic class GlobalExceptionHandler {/** * 业务异常类 * */@ExceptionHandler(value = BizException.class)@ResponseBodypublic ReturnResult bizExceptionHandler(HttpServletRequest req, BizException e) {log.error("发生业务异常: {}, 请求接口: {}", e.getMessage(), req.getRequestURI());return ReturnResult.error(e.getCode(), e.getMessage());}/** * 空指针异常 * * @param e 异常信息 * @param req 请求 */@ExceptionHandler(value = NullPointerException.class)@ResponseBodypublic ReturnResult exceptionHandler(HttpServletRequest req, NullPointerException e) {log.error("空指针异常信息: {}, 请求接口: {}", e, req.getRequestURI());return ReturnResult.error(NULL_POINT_ERROR_EXCEPTION.getCode(),NULL_POINT_ERROR_EXCEPTION.getMessage()+ RIGHT_PARENTHESES+ e.getMessage()+ LEFT_PARENTHESES);}/** * 接口请求方法异常 * */@ExceptionHandler(value = HttpRequestMethodNotSupportedException.class)@ResponseBodypublic ReturnResult methodNotSupportedExceptionHandler(HttpServletRequest req, Exception e) {log.error("请求方法异常信息: {},请求接口: {}", e, req.getRequestURI());return ReturnResult.error(REQUEST_METHOD_ERROR.getCode(),REQUEST_METHOD_ERROR.getMessage() + RIGHT_PARENTHESES + e.getMessage() + LEFT_PARENTHESES);}/** * SQL 语法错误异常 * */@ExceptionHandler(value = MyBatisSystemException.class)@ResponseBodypublic ReturnResult sqlSyntaxErrorExceptionHandler(HttpServletRequest req, Exception e) {log.error("MyBatis系统异常信息: {},请求接口: {}", e, req.getRequestURI());return ReturnResult.error(INNER_FRAME_EXCEPTION.getCode(),INNER_FRAME_EXCEPTION.getMessage() + RIGHT_PARENTHESES + e.getMessage() + LEFT_PARENTHESES);}@ExceptionHandler(value = AuthenticationException.class)public ReturnResult incorrectCredentialsException(HttpServletRequest request, AuthenticationException e) {log.error("用户名或密码不正确: {}, 请求接口: {}", e, request.getRequestURI());return ReturnResult.error(USER_CREDENTIALS_ERROR);}@ExceptionHandler(value = UserException.class)public ReturnResult incorrectUserException(HttpServletRequest request, UserException e) {log.error("用户信息异常: {}, 请求接口: {}", e, request.getRequestURI());return ReturnResult.error(e.getCode(), e.getMessage());}/** * 其他异常信息 * * @param req * @param e */@ExceptionHandler(value = Exception.class)@ResponseBodypublic ReturnResult exceptionHandler(HttpServletRequest req, Exception e) {e.printStackTrace();log.error("未知异常: {}, 请求接口: {}", e, req.getRequestURI());return ReturnResult.error(INTERNAL_SERVER_ERROR.getCode(),INTERNAL_SERVER_ERROR.getMessage() + RIGHT_PARENTHESES + e.getMessage() + LEFT_PARENTHESES);}}
自定义的业务异常类:
import com.sugon.cloud.lowcode.result.BaseResultInterface;import com.sugon.cloud.lowcode.result.CodeMessageEnum;import io.swagger.annotations.ApiModel;import io.swagger.annotations.ApiModelProperty;/** * @desc 业务异常类 */@ApiModel(description= "业务异常数据")public class BizException extends RuntimeException implements BaseResultInterface {private static final long serialVersionUID = 1L;/** * 错误码 */@ApiModelProperty(value = "错误码")private String code;/** * 错误信息 */@ApiModelProperty(value = "错误信息")private String message;public BizException() {super();}public BizException(CodeMessageEnum codeMessageEnum) {super(codeMessageEnum.getCode());this.code = codeMessageEnum.getCode();this.message = codeMessageEnum.getMessage();}public BizException(CodeMessageEnum codeMessageEnum, Throwable cause) {super(codeMessageEnum.getCode(), cause);this.code = codeMessageEnum.getCode();this.message = codeMessageEnum.getMessage();}public BizException(CodeMessageEnum codeMessageEnum, String message, Throwable cause) {super(codeMessageEnum.getCode(), cause);this.code = codeMessageEnum.getCode();this.message = message;}public BizException(String message) {super(message);this.message = message;}public BizException(String code, String message) {super(code);this.code = code;this.message = message;}public BizException(String code, String message, Throwable cause) {super(code, cause);this.code = code;this.message = message;}@Overridepublic Throwable fillInStackTrace() {return this;}@Overridepublic String getCode() {return this.code;}@Overridepublic String getMessage() {return this.message;}}
对象返回到前端以及异常抛出的接口类:
/** * @desc 对象返回到前端以及异常抛出的接口类 */public interface BaseResultInterface {/** * 获取返回代码值 * * @author zby * @datetime 2022/11/29 15:23 */String getCode();/** * 获取返回信息 * * @author zby * @datetime 2022/11/29 10:26 */String getMessage();}
异常枚举类:
package com.sugon.cloud.lowcode.result;import com.sugon.cloud.lowcode.entity.vo.CodeVo;import io.swagger.annotations.Api;import io.swagger.annotations.ApiModel;import static org.apache.commons.lang3.StringUtils.isBlank;/** * @desc 定义错误码编码的枚举类 */@ApiModel(description = "code码类")@Api(tags = "code码管理")public enum CodeMessageEnum implements BaseResultInterface {/** ********* 0000成功 *************** */SUCCESS("0000", "成功!"),SUCCESS_LOGIN("0001", "用户登录成功"),SUCCESS_LOGOUT("0002", "用户退出成功"),/* 默认失败 */COMMON_FAIL("999", "失败"),/** ********* 1xxx系统错误 *************** */SERVER_BUSY("1001", "服务器正忙,请稍后再试!"),INTERNAL_SERVER_ERROR("1002", "服务器内部错误"),NOT_FOUND("1003", "未找到该资源!"),REQUEST_METHOD_ERROR("1004", "接口请求方法异常"),SQL_SYNTAX_ERROR_EXCEPTION("1005", "SQL语法错误异常"),NULL_POINT_ERROR_EXCEPTION("1006", "空指针异常信息"),INNER_FRAME_EXCEPTION("1007", "内部框架执行异常"),PARSE_TOKEN_EXCEPTION("1008", "解析token异常"),TOKEN_NOT_EXIST("1009", "token不存在"),TOKEN_SIGNATURE_EXCEPTION("1010", "token签名异常"),TOKEN_EXPIRE("1011", "token过期,请重新登录"),IMG_TYPE_NOT_CONFIG("1012", "请配置图片类型"),NOT_CONFIG_FILE_DIR("1013", "请配置文件路径"),UPLOAD_FILE_ERROR("1014", "文件上传失败"),FILE_NOT_EXIST("1015", "文件不存在"),FILE_HAS_DELETED("1016", "文件已被删除"),DRIVER_CLASS_NOT_FOUND("1017", "数据库的连接驱动正在加载中..."),TRY_CONNECT_DATABASE_ERROR("1018", "尝试连接数据库失败"),CLOSE_CONNECT_DATABASE_ERROR("1019", "关闭数据库连接失败"),DATABASE_NAME_NOT_EXIST("1020", "数据库名称不存在"),CLOSE_DATASOURCE_ERROR("1021", "释放数据库资源异常"),DRUID_DATASOURCE_ERROR("1022", "数据源创建中..."),CREATE_DATABASE_ERROR("1023", "创建数据库失败"),CREATE_TABLE_ERROR("1024", "创建表失败"),UPDATE_TABLE_FIELD_ERROR("1025", "更新表字段失败"),DELETE_TABLE_FIELD_ERROR("1026", "删除表字段失败"),QUERY_ROLE_ERROR("1027", "查询角色失败"),UPDATE_GROUP_ERROR("1028", "更新接口组失败"),DELETE_GROUP_ERROR("1029", "删除接口组失败"),SAVE_INTERFACE_ERROR("1030", "保存接口信息失败"),/** * ******2xxx参数错误 ********************* */BODY_NOT_MATCH("2001", "请求的数据格式不符"),SIGNATURE_NOT_MATCH("2002", "请求的数字签名不匹配!"),REQUEST_PATH_NOT_MATCH("2003", "当前请求路径没有权限!"),NOT_UPLOAD_FILE_NAME_ERROR("2004", "上传的文件名不存在,请重新上传"),NOT_SUPPORT_IMG_TYPE("2005", "图片格式不正确,请重新上传"),NOT_SUPPORT_USERNAME_TYPE("2006", "excel用户名不能为空"),NOT_SUPPORT_ROLE_TYPE("2007", "角色不存在"),NOT_SUPPORT_DEPT_TYPE("2008", "部门不存在"),SQL_INJECT_NOT_ALLOWED("2009", "参数中存在数据库关键字,请修改"),TABLE_FIELD_NOT_EXIST("2010", "表字段不存在"),/** *********** 3xxx用户错误 ******************* */USER_NOT_LOGIN("3001", "用户未登录"),USER_ACCOUNT_EXPIRED("3002", "账号已过期"),USER_CREDENTIALS_ERROR("3003", "用户名或密码错误"),USER_CREDENTIALS_EXPIRED("3004", "密码过期"),USER_ACCOUNT_NOT_BIND_ENTERPRISE("3005", "当前账号未绑定企业"),USER_ACCOUNT_LOCKED("3006", "账号被锁定"),USER_ACCOUNT_NOT_EXIST("3007", "账号不存在"),USER_ACCOUNT_ALREADY_EXIST("3008", "账号已存在"),USER_ACCOUNT_USE_BY_OTHERS("3009", "账号下线"),USER_NO_PERMISSION("3010", "当前账号没有此权限"),USERNAME_NOT_BLANK("3011", "用户不能为空"),USER_LOGIN_ERROR("3012", "用户登录失败"),USER_LOGOUT_ERROR("3013", "用户退出失败"),USER_ACCOUNT_USE_BY_OTHERS_ERROR("3014", "账号下线异常"),USER_ACCESS_DENIED("3015", "权限认证失败"),USERNAME_EXIST_ERROR("3016", "用户名重名"),ROLE_NAME_ALREADY_EXIST("3101", "角色已存在"),/** ********** 4xxx业务错误 *********************** */ENTERPRISE_NOT_EXIST("4001", "当前企业不存在"),APP_KEY_EXIST("4002", "应用key已存在"),APP_NOT_EXIST("4003", "应用不存在"),APP_PAGE_NAME_EXIST("4004", "当前页面名称已存在"),APP_PAGE_KEY_EXIST("4005", "当前页面key已存在"),APP_PAGE_NOT_EXIST("4006", "当前页面不存在,或已删除"),APP_PAGE_TYPE_ERROR("4007", "页面类型有误"),APP_PAGE_HOME_IS_NOT_EXIST("4008", "请设置首页"),CAN_NOT_DELETE_HOME_PAGE("4009", "请勿删除首页"),DELETE_PAGE_ERROR("4010", "删除页面失败"),CONFIG_CUSTOM_ERROR("4011", "配置自定义页面失败"),APP_PAGE_PARENT_NOT_EXIST("4012", "当前页面的父级页面不存在,或已删除"),DATASOURCE_NAME_EXIST("4013", "当前数据源名称已经存在,请修改后重试"),DATASOURCE_NOT_EXIST("4014", "当前数据源不存在"),DATASOURCE_HAS_DELETED("4015", "当前数据源已删除"),MODEL_NOT_EXIST("4016", "当前模型不存在"),MODEL_HAS_DELETED("4017", "当前模型已删除"),MODEL_NAME_HAS_EXIST("4018", "当前模型名称已存在"),DATASOURCE_NOT_CONFIG("4019", "数据源配置为空,请联系管理员"),DATASOURCE_NOT_CONFIG_DIALECT("4020", "未配置数据源的类型"),DATASOURCE_NOT_CONFIG_DRIVER_CLASS_NAME("4021", "未配置数据源的驱动"),DEPT_USER_EXIST("4022", "部门下存在用户"),NOT_CONFIG_PAGE_BUTTON_TYPE("4023", "未配置按钮雷星"),MODEL_PAGE_RELATION_MODEL("4024", "已关联当前模型页面"),MODEL_PAGE_NOT_EXIST("4025", "模型页面不存在或已被删除"),MODEL_HAS_RELATION_MODEL_PAGE("4026", "当前模型已关联模型页面,不允许删除"),FORM_NOT_EXIST("4027", "模型表单不存在"),READ_FILE_ERROR("4028", "读取模型页面的模板文件失败"),MODEL_PAGE_CONTENT_NULL("4029", "未配置模型页面的模板文件"),NOT_CONFIG_QUERY_SQL("4030", "未配置查询语句"),APP_PAGE_BUTTON_OPTION_VALUE_ERROR("4031", "未配置接口"),DELETE_COLUMN_ERROR("4032", "删除当前失败"),INSERT_DATA_ERROR("4033", "新建数据失败"),EDIT_DATA_ERROR("4034", "编辑数据失败"),DATASOURCE_HAS_MODELS("4035", "当前数据源存在模型,不允许删除"),NOT_CONFIG_FORM_API("4036", "未配置模型表单页的接口信息"),PLEASE_WRITE_AT_LEAST_DATA("4037", "请至少填写一行数据"),AMIS_PAGE_ERROR("4038", "分页参数异常"),QUERY_APP_PAGE_QUERY_FIELD_ERROR("4039", "查询搜素参数异常"),REQUEST_PARAM_NOT_IN_APP_PAGE_QUERY_FIELD("4040", "请求参数不在查询数据表中"),STYLE_LANGUAGE_ON_CSS("4041", "自定义css中的样式语言不能为空"),APP_CONFIG_TYPE_NOT_EXIST("4042", "不支持当前应用设置的类型"),APP_CONFIG_NOT_EXIST_OR_DELETED("4043", "当前设置不存在或已被删除"),APP_HAS_CONFIG_ON_THIS_TYPE("4044", "当前应用设置的类型已存在,请更新"),NOT_SUPPORT_COMPONENT_FRAME("4045", "不支持当前组件框架"),NOT_SUPPORT_COMPONENT_TYPE("4046", "不支持当前组件类型"),CURRENT_APP_KEY_EXIST("4047", "当前应用的组件key已存在"),CREATE_CUSTOM_COMPONENT_ERROR("4048", "新增自定义组件失败"),APP_CUSTOM_COMPONENT_NOT_EXIST("4049", "当前组件不存在或已被删除"),UPDATE_CUSTOM_COMPONENT_ERROR("4050", "更新自定义组件失败"),DELETED_CUSTOM_COMPONENT_ERROR("4051", "删除自定义组件失败"),INSERT_COMPONENT_DEPENDENCE_ERROR("4052", "新增自定义组件依赖项失败"),DELETE_COMPONENT_DEPENDENCE_ERROR("4053", "删除自定义组件依赖项失败"),CURRENT_COMPONENT_DEPENDENCE_NOT_EXIST("4054", "当前自定义组件依赖项不存在或已被删除"),CURRENT_APP_NAME_EXIST("4055", "当前应用的组件名称已存在"),NOT_SUPPORT_DATASOURCE_FROM("4056", "不支持当前的数据库来源"),JDBC_CONFIG_ERROR("4057", "平台内置的数据源配置有误"),NOT_SUPPORT_MODEL_TYPE("4058", "不支持当前的页面模板"),NOT_SUPPORT_CUSTOM_PAGE("4059", "暂不支持自定义页面"),FORM_PAGE_ON_DEVELOPING("4060", "自定义页面的该功能正在开发中..."),APP_PAGE_QUERY_FIELD_NOT_EXIST("4061", "当前查询条件不存在,或已被删除"),APP_PAGE_BUTTON_NOT_EXIST("4062", "当前页面按钮不存在,或已被删除"),TABLE_KEY_MORE_THEN_ONE("4063", "主键超过一个"),TABLE_KEY_LESS_THEN_ONE("4064", "主键必须存在"),TABLE_KEY_MUST_BE_INT("4065", "主键必须为整数类型"),TABLE_FIELD_MUST_EXIST("4066", "必须存在表字段"),CURRENT_MODEL_PAGE_HAS_CONVERSION_CUSTOM_PAGE("4067", "当前模型页面已转成自定义页面"),NOT_SUPPORT_RELEASE_STATUS("4068", "发布版本状态有误"),APP_FORM_BUTTON_NOT_EXIST("4067", "当前表单按钮不存在,或已被删除"),DATASOURCE_KEY_EXIST_ERROR("4068","数据源key已存在");CodeMessageEnum(String code, String message) {this.code = code;this.message = message;}/** 返回到前端的code值 */private String code;/** 返回到前端的code对应的message值 */private String message;@Overridepublic String getCode() {return this.code;}@Overridepublic String getMessage() {return this.message;}public static CodeVo getJsonObjectByCode(String code) {CodeVo codeVo = new CodeVo();if (isBlank(code)) {return codeVo;}for (CodeMessageEnum enumObj : CodeMessageEnum.values()) {if (enumObj.getCode().equals(code)) {return new CodeVo(code, enumObj.message);}}return codeVo;}}
统一给前端的结果格式:
import com.alibaba.fastjson.JSONObject;import io.swagger.annotations.ApiModel;import io.swagger.annotations.ApiModelProperty;import lombok.Getter;import lombok.Setter;import static com.sugon.cloud.lowcode.result.CodeMessageEnum.*;/** * @author zby * @datetime 2022/12/2 10:23 * @desc 返回给前端的对象值 */@Setter@Getter@ApiModel(description= "返回响应数据")public class ReturnResult {/** 响应代码 */@ApiModelProperty(value = "状态码")private String code;/** 响应消息 */@ApiModelProperty(value = "响应信息")private String message;/** 响应结果 */@ApiModelProperty(value = "响应对象")private T result;/** 返回成功还是失败 */@ApiModelProperty(value = "是否成功")private boolean success = true;public ReturnResult() {}public ReturnResult(CodeMessageEnum codeMessageEnum) {this.code = codeMessageEnum.getCode();this.message = codeMessageEnum.getMessage();}/** * 返回成功 * * @author zby * @datetime 2022/12/2 10:29 */public static ReturnResult success() {return success(null);}/** * 返回成功 * * @param data 返回到前端的对象 * @author zby * @datetime 2022/12/2 13:33 */public static ReturnResult success(T data) {return success(SUCCESS, data);}/** * 登录成功 * * @param data 返回到前端的对象 * @author zby * @datetime 2022/12/2 13:50 */public static ReturnResult loginSuccess(T data) {return success(SUCCESS_LOGIN, data);}/** * 退出成功 * * @author zby * @datetime 2022/11/30 14:53 */public static ReturnResult loginOutSuccess() {return success(SUCCESS_LOGOUT, null);}private static ReturnResult success(CodeMessageEnum codeMessageEnum, T data) {ReturnResult result = new ReturnResult();result.setCode(codeMessageEnum.getCode());result.setMessage(codeMessageEnum.getMessage());result.setResult(data);return result;}/** * 返回失败 * * @param codeMessageEnum 基础返回接口 * @author zby * @datetime 2022/12/2 14:50 */public static ReturnResult error(CodeMessageEnum codeMessageEnum) {return error(codeMessageEnum.getCode(), codeMessageEnum.getMessage());}/** * 返回失败 * * @param codeMessageEnum * @param message * @author zby * @datetime 2022/11/30 14:50 */public static ReturnResult error(CodeMessageEnum codeMessageEnum, String message) {return error(codeMessageEnum.getCode(), message);}/** * 返回失败 * * @param code * @param message * @author zby * @datetime 2022/11/28 16:23 */public static ReturnResult error(String code, String message) {ReturnResult result = new ReturnResult();result.setCode(code);result.setMessage(message);result.setSuccess(false);return result;}/** * 重写toString方法 * * @author zby * @datetime 2022/11/29 13:44 */@Overridepublic String toString() {return JSONObject.toJSONString(this);}}