微服务项目：尚融宝（54）（核心业务流程：放款（1））

@ApiOperation("放款")
@GetMapping("/makeLoan/{id}")
public R makeLoan(
    @ApiParam(value = "标的id", required = true)
    @PathVariable("id") Long id) {
    lendService.makeLoan(id);
    return R.ok().message("放款成功");
}

/**
     * 满标放款
     * @param lendId
     */
void makeLoan(Long lendId);

@Resource
private UserInfoMapper userInfoMapper;

@Resource
private UserAccountMapper userAccountMapper;

@Resource
private LendItemService lendItemService;

@Resource
private TransFlowService transFlowService;

@Transactional(rollbackFor = Exception.class)
@Override
public void makeLoan(Long lendId) {
    //获取标的信息
    Lend lend = baseMapper.selectById(lendId);

    //放款接口调用
    Map<String, Object> paramMap = new HashMap<>();
    paramMap.put("agentId", HfbConst.AGENT_ID);
    paramMap.put("agentProjectCode", lend.getLendNo());//标的编号
    String agentBillNo = LendNoUtils.getLoanNo();//放款编号
    paramMap.put("agentBillNo", agentBillNo);

    //平台收益，放款扣除，借款人借款实际金额=借款金额-平台收益
    //月年化
    BigDecimal monthRate = lend.getServiceRate().divide(new BigDecimal(12), 8, BigDecimal.ROUND_DOWN);
    //平台实际收益 = 已投金额 * 月年化 * 标的期数
    BigDecimal realAmount = lend.getInvestAmount().multiply(monthRate).multiply(new BigDecimal(lend.getPeriod()));


    paramMap.put("mchFee", realAmount); //商户手续费(平台实际收益)
    paramMap.put("timestamp", RequestHelper.getTimestamp());
    String sign = RequestHelper.getSign(paramMap);
    paramMap.put("sign", sign);

    log.info("放款参数：" + JSONObject.toJSONString(paramMap));
    //发送同步远程调用
    JSONObject result = RequestHelper.sendRequest(paramMap, HfbConst.MAKE_LOAD_URL);
    log.info("放款结果：" + result.toJSONString());

    //放款失败
    if (!"0000".equals(result.getString("resultCode"))) {
        throw new BusinessException(result.getString("resultMsg"));
    }

    //更新标的信息
    lend.setRealAmount(realAmount);
    lend.setStatus(LendStatusEnum.PAY_RUN.getStatus());
    lend.setPaymentTime(LocalDateTime.now());
    baseMapper.updateById(lend);

    //获取借款人信息
    Long userId = lend.getUserId();
    UserInfo userInfo = userInfoMapper.selectById(userId);
    String bindCode = userInfo.getBindCode();

    //给借款账号转入金额
    BigDecimal total = new BigDecimal(result.getString("voteAmt"));
    userAccountMapper.updateAccount(bindCode, total, new BigDecimal(0));

    //新增借款人交易流水
    TransFlowBO transFlowBO = new TransFlowBO(
        agentBillNo,
        bindCode,
        total,
        TransTypeEnum.BORROW_BACK,
        "借款放款到账，编号：" + lend.getLendNo());//项目编号
    transFlowService.saveTransFlow(transFlowBO);

    //获取投资列表信息
    List<LendItem> lendItemList = lendItemService.selectByLendId(lendId, 1);
    lendItemList.stream().forEach(item -> {

        //获取投资人信息
        Long investUserId = item.getInvestUserId();
        UserInfo investUserInfo = userInfoMapper.selectById(investUserId);
        String investBindCode = investUserInfo.getBindCode();

        //投资人账号冻结金额转出
        BigDecimal investAmount = item.getInvestAmount(); //投资金额
        userAccountMapper.updateAccount(investBindCode, new BigDecimal(0), investAmount.negate());

        //新增投资人交易流水
        TransFlowBO investTransFlowBO = new TransFlowBO(
            LendNoUtils.getTransNo(),
            investBindCode,
            investAmount,
            TransTypeEnum.INVEST_UNLOCK,
            "冻结资金转出，出借放款，编号：" + lend.getLendNo());//项目编号
        transFlowService.saveTransFlow(investTransFlowBO);
    });

    //放款成功生成借款人还款计划和投资人回款计划
    // TODO

}

List<LendItem> selectByLendId(Long lendId, Integer status);

@Override
public List<LendItem> selectByLendId(Long lendId, Integer status) {
    QueryWrapper<LendItem> queryWrapper = new QueryWrapper();
    queryWrapper.eq("lend_id", lendId);
    queryWrapper.eq("status", status);
    List<LendItem> lendItemList = baseMapper.selectList(queryWrapper);
    return lendItemList;
}

  makeLoan(id) {
    return request({
      url: `/admin/core/lend/makeLoan/${id}`,
      method: 'get'
    })
  }

<el-button v-if="scope.row.status == 1" type="warning" size="mini" @click="makeLoan(scope.row.id)">
    放款
</el-button>

makeLoan(id) {
  this.$confirm('确定放款吗?', '提示', {
    confirmButtonText: '确定',
    cancelButtonText: '取消',
    type: 'warning'
  })
    .then(() => {
      return lendApi.makeLoan(id)
    })
    .then(response => {
      //放款成功则重新获取数据列表
      this.fetchData()
      this.$message({
        type: 'success',
        message: response.message
      })
    })
    .catch(error => {
      console.log('取消', error)
      if (error === 'cancel') {
        this.$message({
          type: 'info',
          message: '已取消放款'
        })
      }
    })
}