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Avoid reference to HandlerMethod class in ServerErrorException

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This breaks the package dependency cycle between web.server/web.method and makes ServerErrorException more generally applicable. Includes deprecation of the plain reason constructor variant, in favor of providing a Method or MethodParameter context (which MatrixVariableMethodArgumentResolver does now).
This commit is contained in:
Juergen Hoeller
2018-04-01 00:21:15 +02:00
parent 97735e4ffc
commit 66a3a82fb3
3 changed files with 34 additions and 29 deletions
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58
spring-web/src/main/java/org/springframework/web/server/ServerErrorException.java
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@@ -16,10 +16,11 @@
package org.springframework.web.server;
import java.lang.reflect.Method;
import org.springframework.core.MethodParameter;
import org.springframework.http.HttpStatus;
import org.springframework.lang.Nullable;
import org.springframework.web.method.HandlerMethod;
/**
* Exception for an {@link HttpStatus#INTERNAL_SERVER_ERROR} that exposes extra
@@ -33,49 +34,41 @@ import org.springframework.web.method.HandlerMethod;
public class ServerErrorException extends ResponseStatusException {
@Nullable
private final HandlerMethod handlerMethod;
private final Method handlerMethod;
@Nullable
private final MethodParameter parameter;
/**
* Constructor with an explanation only.
*/
public ServerErrorException(String reason) {
super(HttpStatus.INTERNAL_SERVER_ERROR, reason, null);
this.handlerMethod = null;
this.parameter = null;
}
/**
* Constructor with a reason and root cause.
* Constructor for a 500 error with a reason and an optional cause.
* @since 5.0.5
*/
public ServerErrorException(String reason, Throwable cause) {
public ServerErrorException(String reason, @Nullable Throwable cause) {
super(HttpStatus.INTERNAL_SERVER_ERROR, reason, cause);
this.handlerMethod = null;
this.parameter = null;
}
/**
* Constructor for a 500 error with a {@link MethodParameter}.
* Constructor for a 500 error with a handler {@link Method} and an optional cause.
* @since 5.0.5
*/
public ServerErrorException(String reason, MethodParameter parameter, @Nullable Throwable cause) {
super(HttpStatus.INTERNAL_SERVER_ERROR, reason, cause);
this.handlerMethod = null;
this.parameter = parameter;
}
/**
* Constructor for a 500 error with a root cause.
*/
public ServerErrorException(String reason, HandlerMethod handlerMethod, @Nullable Throwable cause) {
public ServerErrorException(String reason, Method handlerMethod, @Nullable Throwable cause) {
super(HttpStatus.INTERNAL_SERVER_ERROR, reason, cause);
this.handlerMethod = handlerMethod;
this.parameter = null;
}
/**
* Constructor for a 500 error with a {@link MethodParameter} and an optional cause.
*/
public ServerErrorException(String reason, MethodParameter parameter, @Nullable Throwable cause) {
super(HttpStatus.INTERNAL_SERVER_ERROR, reason, cause);
this.handlerMethod = parameter.getMethod();
this.parameter = parameter;
}
/**
* Constructor for a 500 error linked to a specific {@code MethodParameter}.
* @deprecated in favor of {@link #ServerErrorException(String, MethodParameter, Throwable)}
@@ -85,18 +78,29 @@ public class ServerErrorException extends ResponseStatusException {
this(reason, parameter, null);
}
/**
* Constructor for a 500 error with a reason only.
* @deprecated in favor of {@link #ServerErrorException(String, Throwable)}
*/
@Deprecated
public ServerErrorException(String reason) {
super(HttpStatus.INTERNAL_SERVER_ERROR, reason, null);
this.handlerMethod = null;
this.parameter = null;
}
/**
* Return the controller method associated with the error, if any.
* Return the handler method associated with the error, if any.
* @since 5.0.5
*/
@Nullable
public HandlerMethod getHandlerMethod() {
public Method getHandlerMethod() {
return this.handlerMethod;
}
/**
* Return the controller method argument associated with this error, if any.
* Return the specific method parameter associated with the error, if any.
*/
@Nullable
public MethodParameter getMethodParameter() {