redirect如何让url忽略model
本文翻译自http://stackoverflow.com/questions/2163517/how-do-i-prevent-spring-3-0-mvc-modelattribute-variables-from-appearing-in-url
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三种方式：拦截器、viewresolver、redirect前model.asMap().clear()清除modelmap
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1.拦截器中处理
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public class CommonModelMapInformationInterceptor implements HandlerInterceptor { // This method is unused as this Interceptor is for post handle only public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception { } // This method is unused as this Interceptor is for post handle only public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { return true; } public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception { boolean isRedirectView = modelAndView.getView() instanceof RedirectView; boolean isViewObject = modelAndView.getView() == null; // if the view name is null then set a default value of true boolean viewNameStartsWithRedirect = (modelAndView.getViewName() == null ? true : modelAndView.getViewName().startsWith(UrlBasedViewResolver.REDIRECT_URL_PREFIX)); if(modelAndView.hasView() && ( ( isViewObject && !isRedirectView) || (!isViewObject && !viewNameStartsWithRedirect))){ addCommonModelData(modelAndView); } } public void addCommonModelData(ModelAndView modelAndView){ modelAndView.addObject(“stuff”, “importantStuff”); modelAndView.addObject(“moreStuff”, “moreImportantStuff”); } }?
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2.viewresolver中处理
? ?我自己用的是继承自InternalResourceViewResolver,
? ?分别介绍两种方式：
? ?1）可以在需要忽略model的时候改用 redirectWithoutModel来做跳转
public class RedirectViewResolver implements ViewResolver, Ordered { // Have a highest priority by default private int order = Integer.MIN_VALUE; // Uses this prefix to avoid interference with the default behaviour public static final String REDIRECT_URL_PREFIX = "redirectWithoutModel:"; public View resolveViewName(String viewName, Locale arg1) throws Exception { if (viewName.startsWith(REDIRECT_URL_PREFIX)) { String redirectUrl = viewName.substring(REDIRECT_URL_PREFIX.length()); return new RedirectView(redirectUrl, true, true, false); } //return null;//此处原文返回空 return super.resolveViewName(viewName, arg1); } public int getOrder() { return order; } public void setOrder(int order) { this.order = order; }}? ?2）当整个应用都不希望带model跳转，可以更简单的实现
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public class RedirectsNotExposingModelUrlBasedViewResolver extends UrlBasedViewResolver { @Override protected View createView(String viewName, Locale locale) throws Exception { View view = super.createView(viewName, locale); if (view instanceof RedirectView) { ((RedirectView) view).setExposeModelAttributes(false); } return view; }}?