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
*
*/
@RestControllerAdvice
public 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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