1. • get请求

1.1 不带params（Restful风格）

封装方法getBanner

export function getBanner(customerBannerId) {
  return request({
    url: '/recruit/banner/' + customerBannerId,
    method: 'get'
  })
}

getBanner方法调用（customerBannerId是一个数字）

import {getBanner} from "@/api/recruit/banner"; 

    handleUpdate(row) {
      this.reset();
      this.pageStatus = "edit";
      const customerBannerId = row.customerBannerId || this.ids;
      getBanner(customerBannerId).then(response => {
        if (response.code === 200) {
          this.form = response.data;
          this.open = true;
          this.title = "修改【" + row.name + "】横幅";
        } else this.$modal.msgError("请求横幅信息失败，请刷新页面后重试！");
      });
    }

后端接口（@PathVariable 注解取得请求路径中的参数，注意此处的三个参数名要一致）

    @GetMapping(value = "/{customerBannerId}")
    public AjaxResult getInfo(@PathVariable("customerBannerId") Long customerBannerId) {
        return AjaxResult.success(customerBannerService.getById(customerBannerId));
    }

1.2 带params（传统风格）

封装方法getBanner

export function getBanner(customerBannerId) {
  return request({
    url: '/recruit/banner/view',
    method: 'get',
    params: customerBannerId
  })
}

getBanner方法调用（customerBannerId是一个对象，这里属性名与属性值一致，简写）

import {getBanner} from "@/api/recruit/banner";

    handleUpdate(row) {
      this.reset();
      this.pageStatus = "edit"
      const customerBannerId = row.customerBannerId || this.ids
      getBanner({customerBannerId}).then(response => {
        if (response.code === 200) {
          this.form = response.data;
          this.open = true;
          this.title = "修改【" + row.name + "】横幅";
        } else this.$modal.msgError("请求横幅信息失败，请刷新页面后重试！");
      });
    },

后端接口（前端传递的对象的属性名要与此处的参数名一致，否则接收不到）

    @GetMapping(value = "/view")
    public AjaxResult getInfo(Long customerBannerId) {
        return AjaxResult.success(customerBannerService.getById(customerBannerId));
    }

1.3 带params（传统风格，后端用@RequestParam注解绑定参数值）

封装方法delBanner

export function delBanner(customerBannerId) {
  return request({
    url: '/recruit/banner/del',
    method: 'get',
    params: customerBannerId
  })
}

delBanner方法调用（传入参数要为对象形式）

import {delBanner} from "@/api/recruit/banner";

    handleDelete(row) {
      this.$modal.confirm('是否确认删除横幅名称为【' + row.name + '】的数据项？').then(function () {
        return delBanner({customerBannerId: row.customerBannerId});
      }).then(res => {
        if (res.code === 200) {
          this.getList();
          this.$modal.msgSuccess("删除成功");
        } else this.$modal.msgError("删除失败，请刷新页面后重试！");
      }).catch(err => {
        console.log(err)
      });
    }

后端接口（@RequestParam注解绑定参数值）

    @GetMapping("/del")
    public AjaxResult remove(@RequestParam("customerBannerId") Long customerBannerId) {
        // 处于显示状态不能删除
        CustomerBanner banner = customerBannerService.getById(customerBannerId);
        if (banner.getIsShow() == 0 || banner.getIsShow().equals(0)) {
            return AjaxResult.error("【" + banner.getName() + "】横幅处于显示状态，不能删除");
        }
        return toAjax(customerBannerService.removeById(customerBannerId));
    }

2. post请求

封装方法addBanner

export function addBanner(data) {
  return request({
    url: '/recruit/banner/create',
    method: 'post',
    data: data
  })
}

addBanner方法调用（this.form 为一个对象）

import {addBanner} from "@/api/recruit/banner";

    addBanner(this.form).then(response => {
      if (response.code === 200) {
        this.$modal.msgSuccess("新增成功");
        this.open = false;
        this.getList();
      } else this.$modal.msgError("新增失败，请刷新页面后重试！");
    });

后端接口（@RequestBody 注解读出前端传递data的各个属性，前提是data的属性名要与CustomerBanner的属性名一致）

    @PostMapping("/create")
    public AjaxResult add(@RequestBody CustomerBanner customerBanner) {
        String userNickname = SecurityUtils.getUserNickname();//getUserNickname()：自己在若依框架SecurityUtils类添加的一个方法
        Long userId = SecurityUtils.getUserId();//获取登录用户id
        customerBanner.setCreateBy(userNickname);
        customerBanner.setCreateById(userId);
        customerBanner.setCreateTime(new Date());
        return toAjax(customerBannerService.save(customerBanner));
    }


    /**
     * 获取登录用户昵称，数据库用户名字段存储的是电话号码，真正的用户名存储在昵称字段
     */
    public static String getUserNickname()
    {
        LoginUser loginUser = SecurityContextHolder.get(SecurityConstants.LOGIN_USER, LoginUser.class);
        return loginUser.getSysUser().getNickName();
    }

3. put请求

方法封装updateBanner

export function updateBanner(data) {
  return request({
    url: '/recruit/banner',
    method: 'put',
    data: data
  })
}

updateBanner方法调用

import {updateBanner} from "@/api/recruit/banner";

    updateBanner(this.form).then(response => {
      if (response.code === 200) {
        this.$modal.msgSuccess("修改成功");
        this.open = false;
        this.getList();
      } else this.$modal.msgError("修改失败，请刷新页面后重试！");
    });

后端接口（@RequestBody 注解读出前端传递data的各个属性，前提是data的属性名要与CustomerBanner的属性名一致）

    @PutMapping
    public AjaxResult edit(@RequestBody CustomerBanner customerBanner) {
        String userNickname = SecurityUtils.getUserNickname();
        Long userId = SecurityUtils.getUserId();
        customerBanner.setUpdateBy(userNickname);
        customerBanner.setUpdateById(userId);
        customerBanner.setUpdateTime(new Date());
        return toAjax(customerBannerService.updateById(customerBanner));
    }

4. delete请求

封装方法delBanner

export function delBanner(customerBannerId) {
  return request({
    url: '/recruit/banner/' + customerBannerId,
    method: 'delete'
  })
}

delBanner方法调用

import {delBanner} from "@/api/recruit/banner";

    handleDelete(row) {
      const customerBannerIds = row.customerBannerId;
      this.$modal.confirm('是否确认删除横幅名称为【' + row.name + '】的数据项？').then(function () {
        return delBanner(customerBannerIds);
      }).then(res => {
        if (res.code === 200) {
          this.getList();
          this.$modal.msgSuccess("删除成功");
        } else this.$modal.msgError("删除失败，请刷新页面后重试！");
      }).catch(err => {
        console.log(err)
      });
    }

后端接口（@PathVariable 注解取得请求路径中的参数，此时方法参数名称和需要绑定的url中变量名称一致，可以简写）

@PathVariable 注解简单用法

    @DeleteMapping("/{customerBannerIds}")
    @Transactional
    public AjaxResult remove(@PathVariable Long[] customerBannerIds) {
        // 处于显示状态不能删除
        for (Long customerBannerId : customerBannerIds) {
            CustomerBanner banner = customerBannerService.getById(customerBannerId);
            if (banner.getIsShow() == 0 || banner.getIsShow().equals(0)) {
                return AjaxResult.error("【" + banner.getName() + "】横幅处于显示状态，不能删除");
            }
        }
        return toAjax(customerBannerService.removeBatchByIds(Arrays.asList(customerBannerIds)));
    }