Zuul學習（二）——全局異常處理

1.這裏就沒有用zuul的異常處理方式，而是攔截controller的異常，創建一個公共的模塊common，其它模塊引入該依賴即可

2.編寫統一的異常類

public class GlobalException extends RuntimeException {

    private static final long serialVersionUID = 1L;
    private Integer code;
    private String msg;

    public GlobalException(Integer code, String msg) {
        super(msg);
        this.code = code;
        this.msg = msg;
    }

    public Integer getCode() {
        return code;
    }

    public String getMsg() {
        return msg;
    }
}

3.編寫一個異常處理器

@RestControllerAdvice
public class GlobalExceptionHandler {

    @ExceptionHandler(value = Exception.class)
    public Result<String> exceptionHandler(HttpServletRequest request, HttpServletResponse response, Exception e) {
        e.printStackTrace();
        if (e instanceof GlobalException) {
            GlobalException ex = (GlobalException) e;
            return new Result<>(ex.getCode(), ex.getMsg());
        } else {
            return new Result<>(500, "系統錯誤");
        }
    }

}

4.如果引入了common的依賴，異常攔截無效的話，嘗試在當前的模塊的啓動類掃描對應的包路徑（比如在user-service模塊）

@SpringBootApplication(scanBasePackages = "com.carter.*")
@EnableEurekaClient
public class ThymeleafApplication {

    public static void main(String[] args) {
        SpringApplication.run(ThymeleafApplication.class, args);
    }

}