创建商品返回的实体类

  • id
  • 名称
  • 图片地址
  • 商品价格
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public class Res_Product {

    private int id;
    private String name;
    private String imgUrl;
    private double price;
}

提供rest服务

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@Service
public class ProductServiceImpl implements ProductService{

    @Autowired
    ProductMapper productMapper;

    @Override
    public ResponseJsonResult getProduct() {

        PageHelper.startPage(1,20);
        ProductExample productExample = new ProductExample();
        List<Product> products = productMapper.selectByExample(productExample);

        List<Res_Product> res_products = new ArrayList<>();

        for (int i = 0; i < products.size() ; i++) {
            Res_Product res_product = new Res_Product();
            Product product = products.get(i);
            res_product.setPrice(product.getPrice());
            res_product.setId(product.getId());
            res_product.setName(product.getName());
            res_product.setImgUrl(product.getImage());
            res_products.add(res_product);
        }

        ResponseJsonResult responseJsonResult = new ResponseJsonResult();
        responseJsonResult.setList(res_products);

        return responseJsonResult;
    }
}

portal 系统获取数据

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@Service
public class ProductServiceImpl implements ProductService {

    @Value("${REST_URL}")
    private String REST_URL;
    @Value("${REST_PRODUCT_LIST}")
    private String REST_PRODUCT_LIST;

    @Override
    public List<Res_Product> getProducts() {

        try {
            String jsonResult = HttpClientUtil.httpGet(REST_URL + REST_PRODUCT_LIST);
            ResponseJsonResult responseJsonResult = GsonUtils.fromJson(ResponseJsonResult.class, jsonResult);
            List<Res_Product> list = (List<Res_Product>) responseJsonResult.getList();
            return list;
        } catch (IOException e) {
            e.printStackTrace();
        }

        return null;
    }
}

freemark 商品数据展示

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<#list products as product>
   <div class="containerFour_bottomRight_2 containerFour_bottomRight_4">
       <div class="cFour_botRight_2img">
           <img src="${product.imgUrl}" alt="">
       </div>
       <div class="cFour_botRight_2word1">
               ${product.name}
       </div>
       <div class="cFour_botRight_2word2">￥ ${product.price}</div>
   </div>
 </#list>

java ssm 视频教程目录