[Spring]一个和无参构造相关的有关问题，求大鸟解答

<bean id="productManangerView" class="com.star.client.form.view.ProductManageView">        <property name="productService" ref="productService"></property>    </bean>

         //...省略不必要的代码         private ProductSearchForm productSearchForm = new ProductSearchForm();//搜索面板         private IProductService productService;    public void setProductService(IProductService productService) {        this.productService = productService;    }             /**     * 无参构造     */    private ProductManageView() {        addComponent();        addListener();        addObserver();        init();    }    /**     * 内部控件初始化     */    private void addComponent() {        JTabbedPane pane = new JTabbedPane(JTabbedPane.TOP);// 服务产品管理面板        JTabbedPane productPane = new JTabbedPane(JTabbedPane.TOP);        JSplitPane splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, true);        JPanel leftPanel = new JPanel(new BorderLayout());        JPanel rightPanel = new JPanel(new BorderLayout());        splitPane.setDividerSize(5);        splitPane.setDividerLocation(380);        splitPane.setEnabled(false);        productSearchForm.setProductService(productService); //注意这里！为搜索面板set了服务接口，我的问题就发生在这里        leftPanel.add(productSearchForm.getControl(), BorderLayout.NORTH);        leftPanel.add(productDisplayer.getControl(), BorderLayout.CENTER);        productForm.setFormEnable(false);        productPane.addTab("产品信息", productForm.getControl());        JPanel buttonPanel = new JPanel();        buttonPanel.add(addButton);        buttonPanel.add(updateButton);        buttonPanel.add(deleteButton);        rightPanel.add(productPane);        rightPanel.add(buttonPanel, BorderLayout.SOUTH);        splitPane.setLeftComponent(leftPanel);        splitPane.setRightComponent(rightPanel);        pane.addTab("服务产品管理 ", splitPane);                this.add(pane);        addDialog.setProductService(productService);        updateDialog.setProductService(productService);    }         public void showView(){        this.setVisible(true);    }//...省略不必要的代码

ProductManageView productView = (ProductManageView) context.getBean("productManangerView");        productView.showView();

/**     * 无参构造     */    private Product、、ManageView() {        //addComponent();        //addListener();        //addObserver();        //init();    }         public void showView(){                  addComponent();        addListener();        addObserver();        init();        this.setVisible(true);    }

applicationContext.xml <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd"> <beans> <bean id="fru" class="cn.mldn.lxh.demo01.Orange"></bean> <bean id="simple" class="cn.mldn.lxh.demo02.SimpleBean">   <constructor-arg index="0">    <value>LiXingHua</value>   </constructor-arg>   <constructor-arg index="1" value="www.MLDN.cn"></constructor-arg> </bean> </beans>