作者:小李子说程序\
起源:https://www.toutiao.com/i6878...
前言
软件开发springboot我的项目过程中,不可避免的须要解决各种异样,spring mvc 架构中各层会呈现大量的try {...} catch {...} finally {...}代码块,不仅有大量的冗余代码,而且还影响代码的可读性。
Spring Boot 根底就不介绍了,举荐下这个实战教程:
https://github.com/javastacks...
这样就须要定义个全局对立异样处理器,以便业务层再也不用解决异样。
举荐理由
- 代码复制到我的项目中通过简略的配置即可实现
- 能够灵便的依据本人的业务异样进行更细粒度的扩大
实际
1 封装对立返回后果类
源代码
public class AjaxResult { //是否胜利 private Boolean success; //状态码 private Integer code; //提示信息 private String msg; //数据 private Object data; public AjaxResult() { } //自定义返回后果的构造方法 public AjaxResult(Boolean success,Integer code, String msg,Object data) { this.success = success; this.code = code; this.msg = msg; this.data = data; } //自定义异样返回的后果 public static AjaxResult defineError(BusinessException de){ AjaxResult result = new AjaxResult(); result.setSuccess(false); result.setCode(de.getErrorCode()); result.setMsg(de.getErrorMsg()); result.setData(null); return result; } //其余异样解决办法返回的后果 public static AjaxResult otherError(ErrorEnum errorEnum){ AjaxResult result = new AjaxResult(); result.setMsg(errorEnum.getErrorMsg()); result.setCode(errorEnum.getErrorCode()); result.setSuccess(false); result.setData(null); return result; } public Boolean getSuccess() { return success; } public void setSuccess(Boolean success) { this.success = success; } public Integer getCode() { return code; } public void setCode(Integer code) { this.code = code; } public String getMsg() { return msg; } public void setMsg(String msg) { this.msg = msg; } public Object getData() { return data; } public void setData(Object data) { this.data = data; }}
2 自定义异样封装类
源码:
public class BusinessException extends RuntimeException { private static final long serialVersionUID = 1L; /** * 谬误状态码 */ protected Integer errorCode; /** * 谬误提醒 */ protected String errorMsg; public BusinessException(){ } public BusinessException(Integer errorCode, String errorMsg) { this.errorCode = errorCode; this.errorMsg = errorMsg; } public Integer getErrorCode() { return errorCode; } public void setErrorCode(Integer errorCode) { this.errorCode = errorCode; } public String getErrorMsg() { return errorMsg; } public void setErrorMsg(String errorMsg) { this.errorMsg = errorMsg; }}
3 谬误枚举,回绝硬编码
源码
public enum ErrorEnum { // 数据操作谬误定义 SUCCESS(200, "胜利"), NO_PERMISSION(403,"你没得权限"), NO_AUTH(401,"未登录"), NOT_FOUND(404, "未找到该资源!"), INTERNAL_SERVER_ERROR(500, "服务器异样请分割管理员"), ; /** 错误码 */ private Integer errorCode; /** 错误信息 */ private String errorMsg; ErrorEnum(Integer errorCode, String errorMsg) { this.errorCode = errorCode; this.errorMsg = errorMsg; } public Integer getErrorCode() { return errorCode; } public String getErrorMsg() { return errorMsg; }}
4 全局异样解决类
源码
/** * 全局异样处理器 * */@RestControllerAdvicepublic class GlobalExceptionHandler{ private static final Logger log = LoggerFactory.getLogger(GlobalExceptionHandler.class); /** * 解决自定义异样 * */ @ExceptionHandler(value = BusinessException.class) public AjaxResult bizExceptionHandler(BusinessException e) { log.error(e.getMessage(), e); return AjaxResult.defineError(e); } /** *解决其余异样 * */ @ExceptionHandler(value = Exception.class) public AjaxResult exceptionHandler( Exception e) { log.error(e.getMessage(), e); return AjaxResult.otherError(ErrorEnum.INTERNAL_SERVER_ERROR); }}
5 测试
返回后果:
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