5

我想将此 SimpleFormController 转换为使用 Spring MVC 2.5 中引入的注释支持

爪哇

public class PriceIncreaseFormController extends SimpleFormController {

    ProductManager productManager = new ProductManager();

    @Override
    public ModelAndView onSubmit(Object command)
            throws ServletException {

        int increase = ((PriceIncrease) command).getPercentage();
        productManager.increasePrice(increase);

        return new ModelAndView(new RedirectView(getSuccessView()));
    }

    @Override
    protected Object formBackingObject(HttpServletRequest request)
            throws ServletException {
        PriceIncrease priceIncrease = new PriceIncrease();
        priceIncrease.setPercentage(20);
        return priceIncrease;
    }

}

弹簧配置

<!-- Include basic annotation support -->
<context:annotation-config/>        

<!-- Comma-separated list of packages to search for annotated controllers. Append '.*' to search all sub-packages -->
<context:component-scan base-package="springapp.web"/>  

<!-- Enables use of annotations on controller methods to map URLs to methods and request params to method arguments  -->
<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"/>

<bean name="/priceincrease.htm" class="springapp.web.PriceIncreaseFormController">
    <property name="sessionForm" value="true"/>
    <property name="commandName" value="priceIncrease"/>
    <property name="commandClass" value="springapp.service.PriceIncrease"/>
    <property name="validator">
        <bean class="springapp.service.PriceIncreaseValidator"/>
    </property>
    <property name="formView" value="priceincrease"/>
    <property name="successView" value="hello.htm"/>
    <property name="productManager" ref="productManager"/>
</bean>

基本上，我想/priceincrease.htm用 Java 类中的注释替换 bean 的所有 XML 配置。这是否可能，如果可以，我应该使用哪些相应的注释？

谢谢，唐

4

2 回答 2

6

它看起来像下面这样，尽管它是否按原样工作取决于您的配置（查看解析器等）。我还应该注意到，大约有 80 亿种有效的方法来编写这个东西。请参阅 Spring 文档13.11.4 “支持的处理程序方法参数和返回类型”，以了解这种精神错乱的概述。另请注意，您可以自动装配验证器

@Controller
@RequestMapping("/priceincrease.htm")
public class PriceIncreaseFormController {

    ProductManager productManager;

    @Autowired
    public PriceIncreaseFormController(ProductManager productManager) {
        this.productManager = productManager;
    }

    // note: this method does not have to be called onSubmit
    @RequestMapping(method = RequestMethod.POST)
    public String onSubmit(@ModelAttribute("priceIncrease") PriceIncrease priceIncrease, BindingResult result, SessionStatus status {

        new PriceIncreaseValidator().validate(priceIncrease, result);
        if (result.hasErrors()) {
            return "priceincrease";
        }
        else {
            int increase = priceIncrease.getPercentage();
            productManager.increasePrice(increase);
            status.setComplete();
            return "redirect:hello.htm";
        }
    }

    // note: this method does not have to be called setupForm
    @RequestMapping(method = RequestMethod.GET)    
    public String setupForm(Model model) {
        PriceIncrease priceIncrease = new PriceIncrease();
        priceIncrease.setPercentage(20);
        model.addAttribute("priceIncrease", priceIncrease);
        return "priceincrease";
    }

}
于 2009-04-29T20:55:17.257 回答
0

有人用最近的 MVC 完成了这个项目，它在 github 上，所以你可以看到所有的类与 Spring 的教程相比是如何变化的。

链接：PriceIncreaseFormController

于 2015-07-28T11:55:53.383 回答