自定义MultipleViewResolver

1.MultipleViewResolver.java
import java.util.Locale;
 import java.util.Map;import org.springframework.web.servlet.View;
 import org.springframework.web.servlet.ViewResolver;public class MultipleViewResolver implements ViewResolver {
  
  private Map<String, ViewResolver> resolvers; public void setResolvers(Map<String, ViewResolver> resolvers) {
   this.resolvers = resolvers;
  } public View resolveViewName(String viewName, Locale locale)
    throws Exception {
   int index = viewName.indexOf('.');//first '.'
   ViewResolver resolver = null;
   
   if (index > -1) {
    int p = viewName.indexOf("?");//first '?'
    p = p == -1 ? viewName.length() : p;
    if (resolvers.containsKey(viewName.substring(index + 1, p))) {
     resolver = resolvers.get(viewName.substring(index+1, p));
    } else {
     resolver = resolvers.get(viewName.substring(index+1));
    }
   } else {
    resolver = resolvers.get(viewName);
   }  if (resolver != null) {
    return resolver.resolveViewName(viewName, locale);
   }
   
   return null;
  } 
2.jsonView.java
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;import org.kframe.util.JSONResponseUtil;
 import org.springframework.core.Ordered;
 import org.springframework.web.servlet.view.AbstractView;public class JsonView extends AbstractView implements Ordered {
 private int order;
 public JsonView() {
   setContentType("application/json;charset=UTF-8");
  } @SuppressWarnings("unchecked")
  @Override
  protected void renderMergedOutputModel(Map map, HttpServletRequest request,
    HttpServletResponse response) throws Exception {
   Object o = map.get(JsonModelAndView.EXCLUDE_PROPERTY);
   if (o != null) {
    JSONResponseUtil.print(response, map .get(JsonModelAndView.MODEL_KEY), (String[]) o);
   } else {
    JSONResponseUtil.print(response, map .get(JsonModelAndView.MODEL_KEY));
   }
  } public void setOrder(int order) {
   this.order = order;
  } public int getOrder() {
   return order;
  }}
 
3.JsonModelAndView.java
import org.springframework.web.servlet.ModelAndView;
public class JsonModelAndView extends ModelAndView {
 public static final String MODEL_KEY = "MODEL_KEY";
  
  public static final String EXCLUDE_PROPERTY = "EXCLUDE_PROPERTY"; private static final String VIEW_NAME = "json";
 public JsonModelAndView() {
   setViewName(VIEW_NAME);
  } public JsonModelAndView(Object object) {
   addObject(MODEL_KEY, object);
   setViewName(VIEW_NAME);
  }
  
  public JsonModelAndView(Object object, String[] excludeProperty) {
   addObject(MODEL_KEY, object);
   addObject(EXCLUDE_PROPERTY, excludeProperty);
   setViewName(VIEW_NAME);
  } public void setModel(Object object) {
   addObject(MODEL_KEY, object);
  } public void setExcludeProperty(String[] excludeProperty) {
   addObject(EXCLUDE_PROPERTY, excludeProperty);
  }
 } 
4.