使用@ControllerAdvice注解，將Controller中未使用try-catch捕獲異常的踪古，進(jìn)行統(tǒng)一處理祖灰，
建立GlobalExceptionHandler類使用@ControllerAdvice注解

@ControllerAdvice
public class GlobalExceptionHandler {

    @ExceptionHandler(Exception.class)
    @ResponseBody
    public Map<String,Object> handlerException(){
        Map<String,Object> map = new HashMap<>();
        map.put("code",500);
        map.put("msg","系統(tǒng)繁忙钟沛，請稍后重試");
        return map;
    }

    @ExceptionHandler(BusinessException.class)
    @ResponseBody
    public Map<String,Object> handlerBusinessException(BusinessException businessException){
        Map<String,Object> map = new HashMap<>();
        map.put("code",businessException.getCode());
        map.put("msg",businessException.getMsg());
        map.put("desc",businessException.getDesc());
        return map;
    }

    @ExceptionHandler(SQLException.class)
    @ResponseBody
    public Map<String,Object> handlerSQLException(){
        Map<String,Object> map = new HashMap<>();
        return map;
    }
}

其中BusinessException是業(yè)務(wù)定制異常，在使用過程中可以直接拋出異常局扶。如下：

@RequestMapping("/home2")
    @ResponseBody
    String getProductData2() throws BusinessException {
        throw new BusinessException(500,"系統(tǒng)異常","系統(tǒng)走神了");
    }

下邊是業(yè)務(wù)異常定制的實體恨统，可根據(jù)業(yè)務(wù)需求定制：

/**
 * 業(yè)務(wù)異常
 */
public class BusinessException extends Exception{
    /*異常處理編碼*/
    private Integer code;
    /*異常處理信息*/
    private String msg;
    /*異常處理描述*/
    private String desc;

    public BusinessException(Integer code, String msg, String desc) {
        this.code = code;
        this.msg = msg;
        this.desc = desc;
    }

    public BusinessException(String msg) {
        this.msg = msg;
    }

    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 String getDesc() {
        return desc;
    }

    public void setDesc(String desc) {
        this.desc = desc;
    }
}