spring ServletRequestParameterPropertyValues 源码
spring ServletRequestParameterPropertyValues 代码
文件路径：/spring-web/src/main/java/org/springframework/web/bind/ServletRequestParameterPropertyValues.java
/*
* Copyright 2002-2018 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;
import jakarta.servlet.ServletRequest;
import org.springframework.beans.MutablePropertyValues;
import org.springframework.lang.Nullable;
import org.springframework.web.util.WebUtils;
/**
* PropertyValues implementation created from parameters in a ServletRequest.
* Can look for all property values beginning with a certain prefix and
* prefix separator (default is "_").
*
* <p>For example, with a prefix of "spring", "spring_param1" and
* "spring_param2" result in a Map with "param1" and "param2" as keys.
*
* <p>This class is not immutable to be able to efficiently remove property
* values that should be ignored for binding.
*
* @author Rod Johnson
* @author Juergen Hoeller
* @see org.springframework.web.util.WebUtils#getParametersStartingWith
*/
@SuppressWarnings("serial")
public class ServletRequestParameterPropertyValues extends MutablePropertyValues {
/** Default prefix separator. */
public static final String DEFAULT_PREFIX_SEPARATOR = "_";
/**
* Create new ServletRequestPropertyValues using no prefix
* (and hence, no prefix separator).
* @param request the HTTP request
*/
public ServletRequestParameterPropertyValues(ServletRequest request) {
this(request, null, null);
}
/**
* Create new ServletRequestPropertyValues using the given prefix and
* the default prefix separator (the underscore character "_").
* @param request the HTTP request
* @param prefix the prefix for parameters (the full prefix will
* consist of this plus the separator)
* @see #DEFAULT_PREFIX_SEPARATOR
*/
public ServletRequestParameterPropertyValues(ServletRequest request, @Nullable String prefix) {
this(request, prefix, DEFAULT_PREFIX_SEPARATOR);
}
/**
* Create new ServletRequestPropertyValues supplying both prefix and
* prefix separator.
* @param request the HTTP request
* @param prefix the prefix for parameters (the full prefix will
* consist of this plus the separator)
* @param prefixSeparator separator delimiting prefix (e.g. "spring")
* and the rest of the parameter name ("param1", "param2")
*/
public ServletRequestParameterPropertyValues(
ServletRequest request, @Nullable String prefix, @Nullable String prefixSeparator) {
super(WebUtils.getParametersStartingWith(
request, (prefix != null ? prefix + prefixSeparator : null)));
}
}
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