java - 如何提示用户执行操作

Question

我已经使用 http 方法 DELETE 对 Controller 实现了删除功能。接下来我打算做的是提示用户是否确实想要删除或删除该内容 元素或产品。

使用 Spring MVC 可以实现这样的操作吗？请告诉我怎么做？

代码_1:

@Controller
@RequestMapping("/product/remove")
public class RemoveProductPageController {

public final static String sRemoveProductFromListAttributeName = "removeProductFromList";

public final static String CONTROLLER_URL = "/product/remove";
public final static String DO_REMOVE_HANDLER_METHOD_URL = CONTROLLER_URL + "/{idx}";

@Autowired
private ProductService productService;

@RequestMapping(value = "/{idx}", 
        method = RequestMethod.DELETE)
@ResponseBody
public ResponseEntity<String> doRemove(@Validated @Size(min = 0) @PathVariable(required = true) int idx,
        Model model) {

    Product productToBeRemove = productService.getProductFromListByIdx(idx);
    if (productToBeRemove == null) {
        return new ResponseEntity<String>("no product is avaialble at index:" + idx, HttpStatus.NOT_FOUND);
    }

    model.addAttribute(RemoveProductPageController.sRemoveProductFromListAttributeName, productToBeRemove);
    productService.removeProdcutFromListBxIdx(idx);
    return new ResponseEntity<String>("product removed from index: " + idx, HttpStatus.OK);
}
}

Answer 1

在要显示数据和删除链接的jsp页面上，您可以添加以下代码:

onclick="return confirm('Confirm Deletion?')"

并给出 href 链接作为删除的链接。 下面的链接清楚地解释了示例:

http://learningprogramming.net/java/spring-mvc/delete-data-from-database-with-spring-data-jpa-in-spring-mvc/