1. 首先,第一步,自定义异常:
/**
* 自定义异常
*
* @author lvxiucai
* @date 2018年12月1日
*/
public class MyException extends RuntimeException {
private static final long serialVersionUID = 1L;
private String msg;
private int code = 500;
public MyException (String msg) {
super(msg);
this.msg = msg;
}
public MyException (String msg, Throwable e) {
super(msg, e);
this.msg = msg;
}
public MyException (String msg, int code) {
super(msg);
this.msg = msg;
this.code = code;
}
public MyException (String msg, int code, Throwable e) {
super(msg, e);
this.msg = msg;
this.code = code;
}
public String getMsg() {
return msg;
}
public void setMsg(String msg) {
this.msg = msg;
}
public int getCode() {
return code;
}
public void setCode(int code) {
this.code = code;
}
}
2. 其次,第二步就是定义错误枚举类
public enum HealthErrorEnum {
SYS_ERROR(1001,"系统异常"),
// 2 公用
PARAM_NOT_NULL(2001,"参数不能为空"),
LIST_IS_EMPTY(2002,"查询结果为空");
private int code;//错误码
private String desc;//错误描述
HealthErrorEnum(int code, String desc) {
this.code = code;
this.desc = desc;
}
public int getCode() {
return code;
}
public void setCode(int code) {
this.code = code;
}
public String getDesc() {
return desc;
}
public void setDesc(String desc) {
this.desc = desc;
}
}
3. 最后也是最关键的一步就是定义对MyException的捕捉并处理
@ControllerAdvice
@ResponseBody
public class HealthErrorExceptionHandler {
public HealthErrorExceptionHandler() {
}
@ExceptionHandler(MyException.class)
public RestResult resoveException(HttpServletRequest request, HttpServletResponse response,MyExceptione){
return RestResult.error(e.getCode(),e.getMsg());
}
}
最后即完成了对controller统一异常处理的实现。