程序包 cn.taketoday.web.handler.result

类 ObjectHandlerMethodReturnValueHandler

java.lang.Object

cn.taketoday.web.handler.result.ObjectHandlerMethodReturnValueHandler

所有已实现的接口:

HandlerMethodReturnValueHandler, ReturnValueHandler

public class ObjectHandlerMethodReturnValueHandler
extends Object
implements HandlerMethodReturnValueHandler

HandlerMethod return Object

Iterate handlers in runtime

 
 @GET("/object")
 public Object object(boolean key1, boolean key2, boolean key3, RequestContext context) throws IOException {
   if (key1) {
     return new Body("key1", 1);
   }
   if (key2) {
     Resource resource = new ClassPathResource("error/404.png");
     context.setContentType(MediaType.IMAGE_JPEG_VALUE);
     return ImageIO.read(resource.getInputStream());
   }
   if (key3) {
     return ResourceUtils.getResource("classpath:application.yaml");
   }
   return "body:Hello";
 }
 

作者:

TODAY 2019-07-14 17:41

字段概要

字段

修饰符和类型	字段	说明
private final SelectableReturnValueHandler	delegate

从接口继承的字段 cn.taketoday.web.ReturnValueHandler

NONE_RETURN_VALUE

构造器概要

构造器

构造器	说明
ObjectHandlerMethodReturnValueHandler(SelectableReturnValueHandler delegate)
ObjectHandlerMethodReturnValueHandler(List<ReturnValueHandler> returnValueHandlers)

方法概要

修饰符和类型	方法	说明
void	handleReturnValue(RequestContext context, Object handler, Object returnValue)	Handle result of the handler
boolean	supportsHandlerMethod(HandlerMethod handler)	Whether the given method is supported by this handler.
boolean	supportsReturnValue(Object returnValue)	If this ReturnValueHandler supports the target handler's result

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

从接口继承的方法 cn.taketoday.web.handler.result.HandlerMethodReturnValueHandler

handleHandlerMethodReturnValue, supportsHandler

字段详细资料

delegate

private final SelectableReturnValueHandler delegate

构造器详细资料

ObjectHandlerMethodReturnValueHandler

public ObjectHandlerMethodReturnValueHandler(List<ReturnValueHandler> returnValueHandlers)

ObjectHandlerMethodReturnValueHandler

public ObjectHandlerMethodReturnValueHandler(SelectableReturnValueHandler delegate)

方法详细资料

handleReturnValue

public void handleReturnValue(RequestContext context,
 Object handler,
 Object returnValue)
                       throws Exception

从接口复制的说明: HandlerMethodReturnValueHandler

Handle result of the handler

指定者:

handleReturnValue 在接口中 HandlerMethodReturnValueHandler

指定者:

handleReturnValue 在接口中 ReturnValueHandler

参数:

context - Current HTTP request context

handler - handler may be HandlerMethod

returnValue - Handler execution result Or HandlerExceptionHandler return value

抛出:

Exception - return-value handled failed

supportsReturnValue

public boolean supportsReturnValue(Object returnValue)

从接口复制的说明: ReturnValueHandler

If this ReturnValueHandler supports the target handler's result

This method can test this ReturnValueHandler supports the target handler in application runtime

指定者:

supportsReturnValue 在接口中 ReturnValueHandler

参数:

returnValue - Target handler's return-value or result

返回:

If this ReturnValueHandler supports the target handler's result

supportsHandlerMethod

public boolean supportsHandlerMethod(HandlerMethod handler)

从接口复制的说明: HandlerMethodReturnValueHandler

Whether the given method is supported by this handler.

指定者:

supportsHandlerMethod 在接口中 HandlerMethodReturnValueHandler

返回:

true if this handler supports the supplied return type; false otherwise

另请参阅:

• HandlerMethod