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Spring Framework example source code file (BindErrorsTag.java)
The Spring Framework BindErrorsTag.java source code/* * Copyright 2002-2005 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 * * http://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.servlet.tags; import javax.servlet.ServletException; import javax.servlet.jsp.JspException; import javax.servlet.jsp.PageContext; import org.springframework.validation.Errors; import org.springframework.web.util.ExpressionEvaluationUtils; /** * Evaluates content if there are bind errors for a certain bean. * Exports an "errors" variable of type Errors for the given bean. * * @author Rod Johnson * @author Juergen Hoeller * @see BindTag * @see org.springframework.validation.Errors */ public class BindErrorsTag extends HtmlEscapingAwareTag { public static final String ERRORS_VARIABLE_NAME = "errors"; private String name; private Errors errors; /** * Set the name of the bean that this tag should check. */ public void setName(String name) { this.name = name; } /** * Return the name of the bean that this tag checks. */ public String getName() { return name; } protected final int doStartTagInternal() throws ServletException, JspException { String resolvedName = ExpressionEvaluationUtils.evaluateString("name", this.name, pageContext); this.errors = getRequestContext().getErrors(resolvedName, isHtmlEscape()); if (this.errors != null && this.errors.hasErrors()) { this.pageContext.setAttribute(ERRORS_VARIABLE_NAME, this.errors, PageContext.REQUEST_SCOPE); return EVAL_BODY_INCLUDE; } else { return SKIP_BODY; } } public int doEndTag() { this.pageContext.removeAttribute(ERRORS_VARIABLE_NAME, PageContext.REQUEST_SCOPE); return EVAL_PAGE; } /** * Retrieve the Errors instance that this tag is currently bound to. * Intended for cooperating nesting tags. */ public final Errors getErrors() { return errors; } public void doFinally() { super.doFinally(); this.errors = null; } } Other Spring Framework examples (source code examples)Here is a short list of links related to this Spring Framework BindErrorsTag.java source code file: |
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