diff --git a/core/src/main/java/org/apache/struts2/components/Compress.java b/core/src/main/java/org/apache/struts2/components/Compress.java
new file mode 100644
index 0000000000..6131e5f332
--- /dev/null
+++ b/core/src/main/java/org/apache/struts2/components/Compress.java
@@ -0,0 +1,102 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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.apache.struts2.components;
+
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import org.apache.struts2.util.ValueStack;
+import org.apache.struts2.views.annotations.StrutsTag;
+import org.apache.struts2.views.annotations.StrutsTagAttribute;
+
+import java.io.Writer;
+
+/**
+ *
+ * Used to compress HTML output. Just wrap a given section with the tag.
+ *
+ *
+ *
+ * Configurable attributes are:
+ *
+ *
+ *
+ * force (true/false) - always compress output, this can be useful in DevMode as devMode disables compression
+ *
+ *
+ * Examples
+ *
+ *
+ * <s:compress>
+ * <s:form action="submit">
+ * <s:text name="name" />
+ * ...
+ * </s:form>
+ * </s:compress>
+ *
+ *
+ *
+ * Uses conditional compression depending on action
+ *
+ *
+ * <s:compress force="shouldCompress">
+ * <s:form action="submit">
+ * <s:text name="name" />
+ * ...
+ * </s:form>
+ * </s:compress>
+ *
+ *
+ * "shouldCompress" is a field with getter define on action used in expression evaluation
+ */
+@StrutsTag(name = "compress", tldTagClass = "org.apache.struts2.views.jsp.CompressTag",
+ description = "Compress wrapped content")
+public class Compress extends Component {
+
+ private static final Logger LOG = LogManager.getLogger(Compress.class);
+
+ private String force;
+
+ public Compress(ValueStack stack) {
+ super(stack);
+ }
+
+ @Override
+ public boolean end(Writer writer, String body) {
+ Object forceValue = findValue(force, Boolean.class);
+ boolean forced = forceValue != null && Boolean.parseBoolean(forceValue.toString());
+ if (devMode && !forced) {
+ LOG.debug("Avoids compressing output: {} in DevMode", body);
+ return super.end(writer, body, true);
+ }
+ LOG.trace("Compresses: {}", body);
+ String compressed = body.trim().replaceAll(">\\s+<", "><");
+ LOG.trace("Compressed: {}", compressed);
+ return super.end(writer, compressed, true);
+ }
+
+ @Override
+ public boolean usesBody() {
+ return true;
+ }
+
+ @StrutsTagAttribute(description = "Force output compression")
+ public void setForce(String force) {
+ this.force = force;
+ }
+}
diff --git a/core/src/main/java/org/apache/struts2/views/jsp/CompressTag.java b/core/src/main/java/org/apache/struts2/views/jsp/CompressTag.java
new file mode 100644
index 0000000000..4b9821e539
--- /dev/null
+++ b/core/src/main/java/org/apache/struts2/views/jsp/CompressTag.java
@@ -0,0 +1,55 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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.apache.struts2.views.jsp;
+
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+import org.apache.struts2.components.Component;
+import org.apache.struts2.components.Compress;
+import org.apache.struts2.util.ValueStack;
+
+import java.io.Serial;
+
+/**
+ * @see org.apache.struts2.components.Compress
+ */
+public class CompressTag extends ComponentTagSupport {
+
+ @Serial
+ private static final long serialVersionUID = 7572566991679717145L;
+
+ private String force;
+
+ @Override
+ public Component getBean(ValueStack stack, HttpServletRequest req, HttpServletResponse res) {
+ return new Compress(stack);
+ }
+
+ @Override
+ protected void populateParams() {
+ super.populateParams();
+
+ Compress compress = (Compress) component;
+ compress.setForce(force);
+ }
+
+ public void setForce(String force) {
+ this.force = force;
+ }
+}
diff --git a/core/src/main/resources/template/css_xhtml/controlfooter.ftl b/core/src/main/resources/template/css_xhtml/controlfooter.ftl
index d25b5790cf..0099b6df88 100644
--- a/core/src/main/resources/template/css_xhtml/controlfooter.ftl
+++ b/core/src/main/resources/template/css_xhtml/controlfooter.ftl
@@ -19,29 +19,26 @@
*/
-->
${attributes.after!}<#t/>
- <#lt/>
<#if !attributes.labelPosition?? && (attributes.form.labelPosition)??>
<#assign labelPos = attributes.form.labelPosition/>
<#elseif attributes.labelPosition??>
<#assign labelPos = attributes.labelPosition/>
#if>
<#if (labelPos!"top") == 'top'>
- <#rt/>
+<#rt/>
<#else>
- <#rt/>
+<#rt/>
#if>
<#if (attributes.errorposition!"top") == 'bottom'>
<#assign hasFieldErrors = attributes.name?? && fieldErrors?? && fieldErrors.get(attributes.name)??/>
<#if hasFieldErrors>
<#if attributes.id??>id="wwerr_${attributes.id}"<#rt/>#if> class="wwerr">
<#list fieldErrors.get(attributes.name) as error>
-
- <#if attributes.id??>
- errorFor="${attributes.id}"<#rt/>
- #if>
- class="errorMessage">
- ${error}
- <#t/>
+
+<#if attributes.id??>
+ errorFor="${attributes.id}"<#rt/>
+#if>
+ class="errorMessage">${error}<#rt/>
#list>
<#t/>
#if>
diff --git a/core/src/main/resources/template/css_xhtml/form-validate.ftl b/core/src/main/resources/template/css_xhtml/form-validate.ftl
index 7beb7fab5f..1f1bff261f 100644
--- a/core/src/main/resources/template/css_xhtml/form-validate.ftl
+++ b/core/src/main/resources/template/css_xhtml/form-validate.ftl
@@ -20,9 +20,9 @@
-->
<#if attributes.validate!false == true>
<@s.script src="${base}${attributes.staticContentPath}/css_xhtml/validation.js"/>
- <#if attributes.onsubmit??>
- ${tag.addParameter('onsubmit', "${attributes.onsubmit}; return validateForm_${attributes.escapedId}();")}
- <#else>
- ${tag.addParameter('onsubmit', "return validateForm_${attributes.escapedId}();")}
- #if>
+<#if attributes.onsubmit??>
+ ${tag.addParameter('onsubmit', "${attributes.onsubmit}; return validateForm_${attributes.escapedId}();")}
+<#else>
+ ${tag.addParameter('onsubmit', "return validateForm_${attributes.escapedId}();")}
+#if>
#if>
diff --git a/core/src/main/resources/template/css_xhtml/label.ftl b/core/src/main/resources/template/css_xhtml/label.ftl
index 23701e7159..4c03cd19a5 100644
--- a/core/src/main/resources/template/css_xhtml/label.ftl
+++ b/core/src/main/resources/template/css_xhtml/label.ftl
@@ -18,7 +18,6 @@
* under the License.
*/
-->
-<#--include "/${attributes.templateDir}/css_xhtml/controlheader.ftl" /-->
<#include "/${attributes.templateDir}/${attributes.expandTheme}/controlheader.ftl" />
<#if attributes.id??>
diff --git a/core/src/main/resources/template/simple/actionerror.ftl b/core/src/main/resources/template/simple/actionerror.ftl
index 4cd9a60b93..54b3f3ca20 100644
--- a/core/src/main/resources/template/simple/actionerror.ftl
+++ b/core/src/main/resources/template/simple/actionerror.ftl
@@ -19,7 +19,7 @@
*/
-->
<#if (actionErrors?? && actionErrors?size > 0)>
-
+
<#if attributes.id??>
id="${attributes.id}"<#rt/>
#if>
@@ -32,10 +32,10 @@
style="${attributes.cssStyle}"<#rt/>
#if>
>
- <#list actionErrors as error>
- <#if error??>
- <#if attributes.escape>${error!}<#else>${error!?no_esc}#if> <#rt/> <#rt/>
- #if>
- #list>
-
+<#list actionErrors as error>
+<#if error??>
+ <#if attributes.escape>${error!}<#else>${error!?no_esc}#if> <#rt/> <#rt/>
+#if>
+#list>
+
#if>
\ No newline at end of file
diff --git a/core/src/main/resources/template/simple/form-close-tooltips.ftl b/core/src/main/resources/template/simple/form-close-tooltips.ftl
index 1bf45e909e..e57bdcc1e3 100644
--- a/core/src/main/resources/template/simple/form-close-tooltips.ftl
+++ b/core/src/main/resources/template/simple/form-close-tooltips.ftl
@@ -18,7 +18,6 @@
* under the License.
*/
-->
-
<#--
Code that will add javascript needed for tooltips
--><#t/>
diff --git a/core/src/main/resources/template/simple/form-close.ftl b/core/src/main/resources/template/simple/form-close.ftl
index 59d4f0dbc2..291af09778 100644
--- a/core/src/main/resources/template/simple/form-close.ftl
+++ b/core/src/main/resources/template/simple/form-close.ftl
@@ -19,7 +19,6 @@
*/
-->
-
<#if (attributes.customOnsubmitEnabled??)>
<@s.script>
<#--
@@ -98,5 +97,4 @@
#if>
@s.script>
#if>
-
<#include "/${attributes.templateDir}/${attributes.expandTheme}/form-close-tooltips.ftl" />
diff --git a/core/src/main/resources/template/xhtml/controlheader.ftl b/core/src/main/resources/template/xhtml/controlheader.ftl
index ec9372d927..2df6b1cb0d 100644
--- a/core/src/main/resources/template/xhtml/controlheader.ftl
+++ b/core/src/main/resources/template/xhtml/controlheader.ftl
@@ -19,10 +19,10 @@
*/
-->
<#include "/${attributes.templateDir}/${attributes.expandTheme}/controlheader-core.ftl" />
-
- class="align-${attributes.align}"
- <#else >
- class="tdInput"
- #if>
+
+<#if attributes.align?? >
+ class="align-${attributes.align}"<#rt/>
+<#else >
+ class="tdInput"<#rt/>
+#if>
><#t/>
diff --git a/core/src/main/resources/template/xhtml/form-validate.ftl b/core/src/main/resources/template/xhtml/form-validate.ftl
index a074bef2fd..cbd03a7f68 100644
--- a/core/src/main/resources/template/xhtml/form-validate.ftl
+++ b/core/src/main/resources/template/xhtml/form-validate.ftl
@@ -19,10 +19,10 @@
*/
-->
<#if attributes.validate!false == true>
- <@s.script src="${base}${attributes.staticContentPath}/xhtml/validation.js" />
- <#if attributes.onsubmit??>
- ${tag.addParameter('onsubmit', "${attributes.onsubmit}; return validateForm_${attributes.escapedId}();")}
- <#else>
- ${tag.addParameter('onsubmit', "return validateForm_${attributes.escapedId}();")}
- #if>
+<@s.script src="${base}${attributes.staticContentPath}/xhtml/validation.js" />
+<#if attributes.onsubmit??>
+ ${tag.addParameter('onsubmit', "${attributes.onsubmit}; return validateForm_${attributes.escapedId}();")}
+<#else>
+ ${tag.addParameter('onsubmit', "return validateForm_${attributes.escapedId}();")}
+#if>
#if>
diff --git a/core/src/site/resources/tags/compress-attributes.html b/core/src/site/resources/tags/compress-attributes.html
new file mode 100644
index 0000000000..9ecf24227c
--- /dev/null
+++ b/core/src/site/resources/tags/compress-attributes.html
@@ -0,0 +1,32 @@
+
+
+ Dynamic Attributes Allowed: false
+
+
+
+
+
+
+
+
+
+
+
+
+
+ force
+ false
+
+ false
+ String
+ Force output compression
+
+
+ performClearTagStateForTagPoolingServers
+ false
+ false
+ false
+ Boolean
+ Whether to clear all tag state during doEndTag() processing (if applicable)
+
+
diff --git a/core/src/site/resources/tags/compress-description.html b/core/src/site/resources/tags/compress-description.html
new file mode 100644
index 0000000000..6865f0b720
--- /dev/null
+++ b/core/src/site/resources/tags/compress-description.html
@@ -0,0 +1 @@
+Compress wrapped content
diff --git a/core/src/test/java/org/apache/struts2/components/CompressTest.java b/core/src/test/java/org/apache/struts2/components/CompressTest.java
new file mode 100644
index 0000000000..6631850ab7
--- /dev/null
+++ b/core/src/test/java/org/apache/struts2/components/CompressTest.java
@@ -0,0 +1,132 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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.apache.struts2.components;
+
+import org.apache.struts2.StrutsInternalTestCase;
+import org.apache.struts2.util.ValueStack;
+import org.apache.struts2.util.ValueStackFactory;
+
+import java.io.StringWriter;
+import java.util.Map;
+
+public class CompressTest extends StrutsInternalTestCase {
+
+ private ValueStack stack;
+ private Map context;
+
+ public void testCompressHtmlOutput() {
+ Compress compress = new Compress(stack);
+
+ String body = """
+
+
+ File upload: result
+
+
+ File upload: result
+
+
+ """;
+
+ StringWriter writer = new StringWriter();
+
+ compress.setDevMode("false");
+ compress.setForce("false");
+ compress.end(writer, body);
+
+ assertEquals("File upload: result File upload: result ", writer.toString());
+ }
+
+ public void testAvoidCompressingInDevModeHtmlOutput() {
+ Compress compress = new Compress(stack);
+
+ String body = """
+
+
+ File upload: result
+
+
+ File upload: result
+
+
+ """;
+
+ StringWriter writer = new StringWriter();
+
+ compress.setDevMode("true");
+ compress.end(writer, body);
+
+ assertEquals(body, writer.toString());
+ }
+
+ public void testCompressHtmlOutputEvenInDevMode() {
+ Compress compress = new Compress(stack);
+
+ String body = """
+
+
+ File upload: result
+
+
+ File upload: result
+
+
+ """;
+
+ StringWriter writer = new StringWriter();
+
+ compress.setDevMode("true");
+ compress.setForce("true");
+ compress.end(writer, body);
+
+ assertEquals("File upload: result File upload: result ", writer.toString());
+ }
+
+ public void testCompressHtmlOutputEvenInDevModeAndForceIsExpression() {
+ Compress compress = new Compress(stack);
+
+ String body = """
+
+
+ File upload: result
+
+
+ File upload: result
+
+
+ """;
+
+ this.context.put("shouldCompress", Boolean.TRUE);
+
+ compress.setDevMode("true");
+ compress.setForce("shouldCompress");
+
+ StringWriter writer = new StringWriter();
+ compress.end(writer, body);
+
+ assertEquals("File upload: result File upload: result ", writer.toString());
+ }
+
+ @Override
+ public void setUp() throws Exception {
+ super.setUp();
+ stack = container.getInstance(ValueStackFactory.class).createValueStack();
+ context = stack.getContext();
+ }
+}
diff --git a/core/src/test/java/org/apache/struts2/views/jsp/AbstractUITagTest.java b/core/src/test/java/org/apache/struts2/views/jsp/AbstractUITagTest.java
index df1e4323d0..6252c4554f 100644
--- a/core/src/test/java/org/apache/struts2/views/jsp/AbstractUITagTest.java
+++ b/core/src/test/java/org/apache/struts2/views/jsp/AbstractUITagTest.java
@@ -23,6 +23,7 @@
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.apache.struts2.ServletActionContext;
+import org.apache.struts2.StrutsConstants;
import org.apache.struts2.dispatcher.mapper.ActionMapper;
import org.apache.struts2.dispatcher.mapper.DefaultActionMapper;
import org.apache.struts2.views.jsp.ui.AbstractUITag;
@@ -295,4 +296,18 @@ public static String normalize(Object obj, boolean appendSpace) {
return buffer.toString();
}
+
+ protected void setDevMode(final boolean devMode) {
+ setStrutsConstant(Collections.singletonMap(StrutsConstants.STRUTS_DEVMODE, Boolean.toString(devMode)));
+ }
+
+ /**
+ * Overwrite the Struts Constant and reload container
+ */
+ @Override
+ protected void setStrutsConstant(final Map overwritePropeties) {
+ super.setStrutsConstant(overwritePropeties);
+ stack.getActionContext().withContainer(container);
+ }
+
}
diff --git a/core/src/test/java/org/apache/struts2/views/jsp/CompressTagTest.java b/core/src/test/java/org/apache/struts2/views/jsp/CompressTagTest.java
new file mode 100644
index 0000000000..994e948af8
--- /dev/null
+++ b/core/src/test/java/org/apache/struts2/views/jsp/CompressTagTest.java
@@ -0,0 +1,73 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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.apache.struts2.views.jsp;
+
+import org.apache.struts2.views.jsp.ui.StrutsBodyContent;
+
+public class CompressTagTest extends AbstractUITagTest {
+
+ public void testNoCompression() throws Exception {
+ setDevMode(true);
+
+ CompressTag tag = new CompressTag();
+ tag.setPageContext(pageContext);
+
+ StrutsBodyContent bc = new StrutsBodyContent(null);
+ bc.print("""
+
+ """
+ );
+
+ tag.doStartTag();
+ tag.setBodyContent(bc);
+ tag.doEndTag();
+
+ assertEquals("""
+
+ """.stripTrailing(),
+ this.writer.toString());
+ }
+
+ public void testForceCompression() throws Exception {
+ setDevMode(true);
+
+ CompressTag tag = new CompressTag();
+ tag.setPageContext(pageContext);
+ tag.setForce("true");
+
+ StrutsBodyContent bc = new StrutsBodyContent(null);
+ bc.print("""
+
+ """
+ );
+
+ tag.doStartTag();
+ tag.setBodyContent(bc);
+ tag.doEndTag();
+
+ assertEquals("""
+
+ """.stripTrailing(),
+ this.writer.toString());
+ }
+
+}
\ No newline at end of file
diff --git a/core/src/test/java/org/apache/struts2/views/jsp/ui/DebugTagTest.java b/core/src/test/java/org/apache/struts2/views/jsp/ui/DebugTagTest.java
index d1e89a099e..ffc706e0f9 100644
--- a/core/src/test/java/org/apache/struts2/views/jsp/ui/DebugTagTest.java
+++ b/core/src/test/java/org/apache/struts2/views/jsp/ui/DebugTagTest.java
@@ -19,13 +19,9 @@
package org.apache.struts2.views.jsp.ui;
import org.apache.commons.lang3.StringUtils;
-import org.apache.struts2.StrutsConstants;
import org.apache.struts2.dispatcher.PrepareOperations;
import org.apache.struts2.views.jsp.AbstractUITagTest;
-import java.util.Collections;
-import java.util.Map;
-
/**
* Test case for {@link org.apache.struts2.components.Debug}.
*/
@@ -203,16 +199,4 @@ public void testTagAttributeOverrideDevModeFalse_clearTagStateSet() throws Excep
PrepareOperations.clearDevModeOverride(); // Clear DevMode override. Avoid ThreadLocal side-effects if test thread re-used.
}
- private void setDevMode(final boolean devMode) {
- setStrutsConstant(Collections.singletonMap(StrutsConstants.STRUTS_DEVMODE, Boolean.toString(devMode)));
- }
-
- /**
- * Overwrite the Struts Constant and reload container
- */
- @Override
- protected void setStrutsConstant(final Map overwritePropeties) {
- super.setStrutsConstant(overwritePropeties);
- stack.getActionContext().withContainer(container);
- }
}