数据库唯一性约束异常插入处理

Controller

    @RequestMapping(value="/insertSelective",method={RequestMethod.GET,RequestMethod.POST})
    @ResponseBody
    public Object insertSelective(Auth_role record,HttpSession session){
        Userinfo sessionUserinfo = (Userinfo)session.getAttribute("CURR_USER");
        String sessionuserid = sessionUserinfo.getUserid().toString();
        record.setAdduser(Integer.parseInt(sessionuserid));

        Map map = new HashMap();
        int result = 0;
        /*异常处理*/
        try {
            result = service.insertSelective(record);
        }catch (org.springframework.dao.DuplicateKeyException e){
            /*异常处理截获流程,如果是存在DuplicateKeyException则是重名,直接返回到前端,id主键为自增长,不会重复*/
            map.put("code", "fail");
            map.put("msg", "该角色名已存在!");
            return map;
        }
        /*正常返回流程*/
        if (result == 1) {
            map.put("code", "success");
            map.put("msg", CN_MessageEnum.AddSuccess.getName());
        }else {
            map.put("code", "fail");
            map.put("msg", CN_MessageEnum.AddFailed.getName());
        }
        return map;
    }

数据库唯一性约束异常插入处理

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