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瓦丁:如何使所有片段URL不区分大小写

navigator case-insensitive case-sensitive vaadin7 vaadin

1

Tigerware · 技术社区 · 7 年前

navigator.addView("myView", CustomClass.class);

这是区分大小写的。所以这是可行的:

http://domain/#!myView

这不起作用:

http://domain/#!myview

有没有办法配置导航器,使其以忽略案例的方式工作?

1 回复 | 直到 7 年前

1

2

Oleg 7 年前

你需要创建一个新的 ViewProvider

import com.vaadin.navigator.View;
import com.vaadin.navigator.ViewProvider;

public class CaseInsensitiveClassBasedViewProvider implements ViewProvider {

    private static final long serialVersionUID = 1L;

    private String viewName;
    private final Class<? extends View> viewClass;

    public CaseInsensitiveClassBasedViewProvider(String viewName, Class<? extends View> viewClass) {
        if (null == viewName || null == viewClass) {
            throw new IllegalArgumentException(
                    "View name and class should not be null");
        }

        this.viewName = viewName;
        this.viewClass = viewClass;
    }

    @Override
    public String getViewName(String viewAndParameters) {
        if (null == viewAndParameters) {
            return null;
        }

        String viewAndParametersU = viewAndParameters.toUpperCase();
        String viewNameU = viewName.toUpperCase();

        if (viewAndParametersU.equals(viewNameU) || viewAndParametersU.startsWith(viewNameU + "/")) {
            return viewName;
        }
        return null;
    }

    @Override
    public View getView(String viewName) {
        if (this.viewName.equalsIgnoreCase(viewName)) {
            try {
                View view = viewClass.newInstance();
                return view;
            } catch (InstantiationException e) {
                throw new RuntimeException(e);
            } catch (IllegalAccessException e) {
                throw new RuntimeException(e);
            }
        }
        return null;
    }
}

然后,而不是添加 addView

navigator.addProvider(new CaseInsensitiveClassBasedViewProvider("myView", CustomClass.class));