spring MissingServletRequestParameterException 源码
spring MissingServletRequestParameterException 代码
文件路径：/spring-web/src/main/java/org/springframework/web/bind/MissingServletRequestParameterException.java
/*
* Copyright 2002-2022 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.web.bind;
/**
* {@link ServletRequestBindingException} subclass that indicates a missing parameter.
*
* @author Juergen Hoeller
* @since 2.0.2
*/
@SuppressWarnings("serial")
public class MissingServletRequestParameterException extends MissingRequestValueException {
private final String parameterName;
private final String parameterType;
/**
* Constructor for MissingServletRequestParameterException.
* @param parameterName the name of the missing parameter
* @param parameterType the expected type of the missing parameter
*/
public MissingServletRequestParameterException(String parameterName, String parameterType) {
this(parameterName, parameterType, false);
}
/**
* Constructor for use when a value was present but converted to {@code null}.
* @param parameterName the name of the missing parameter
* @param parameterType the expected type of the missing parameter
* @param missingAfterConversion whether the value became null after conversion
* @since 5.3.6
*/
public MissingServletRequestParameterException(
String parameterName, String parameterType, boolean missingAfterConversion) {
super("", missingAfterConversion);
this.parameterName = parameterName;
this.parameterType = parameterType;
getBody().setDetail("Required parameter '" + this.parameterName + "' is not present.");
}
@Override
public String getMessage() {
return "Required request parameter '" + this.parameterName + "' for method parameter type " +
this.parameterType + " is " +
(isMissingAfterConversion() ? "present but converted to null" : "not present");
}
/**
* Return the name of the offending parameter.
*/
public final String getParameterName() {
return this.parameterName;
}
/**
* Return the expected type of the offending parameter.
*/
public final String getParameterType() {
return this.parameterType;
}
}
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