Rename charSet to charset

Rename AbstractTemplateViewResolverProperties.setCharSet/getCharSet to
setCharset/getCharset, deprecating the old method.

Fixes gh-1835

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/freemarker/FreeMarkerAutoConfiguration.java

@@ -91,7 +91,7 @@ public class FreeMarkerAutoConfiguration {
 
 		protected void applyProperties(FreeMarkerConfigurationFactory factory) {
 			factory.setTemplateLoaderPaths(this.properties.getTemplateLoaderPath());
-			factory.setDefaultEncoding(this.properties.getCharSet());
+			factory.setDefaultEncoding(this.properties.getCharset());
 			Properties settings = new Properties();
 			settings.putAll(this.properties.getSettings());
 			factory.setFreemarkerSettings(settings);

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/template/AbstractTemplateViewResolverProperties.java

@@ -38,7 +38,7 @@ public abstract class AbstractTemplateViewResolverProperties {
 
 	private String contentType = "text/html";
 
-	private String charSet = "UTF-8";
+	private String charset = "UTF-8";
 
 	private String[] viewNames;
 
@@ -87,19 +87,35 @@ public abstract class AbstractTemplateViewResolverProperties {
 	public String getContentType() {
 		return this.contentType
 				+ (this.contentType.contains(";charset=") ? "" : ";charset="
-						+ this.charSet);
+						+ this.charset);
 	}
 
 	public void setContentType(String contentType) {
 		this.contentType = contentType;
 	}
 
+	/**
+	 * @deprecated since 1.2.0 in favor of {@link #getCharset()}
+	 */
+	@Deprecated
 	public String getCharSet() {
-		return this.charSet;
+		return getCharset();
 	}
 
+	/**
+	 * @deprecated since 1.2.0 in favor of {@link #setCharset(String)}
+	 */
+	@Deprecated
 	public void setCharSet(String charSet) {
-		this.charSet = charSet;
+		setCharset(charSet);
+	}
+
+	public String getCharset() {
+		return this.charset;
+	}
+
+	public void setCharset(String charset) {
+		this.charset = charset;
 	}
 
 	public String getPrefix() {

spring-boot-docs/src/main/asciidoc/appendix-application-properties.adoc

@@ -115,7 +115,7 @@ content into your application; rather pick only the properties that you need.
 	spring.freemarker.allow-request-override=false
 	spring.freemarker.cache=true
 	spring.freemarker.check-template-location=true
-	spring.freemarker.char-set=UTF-8
+	spring.freemarker.charset=UTF-8
 	spring.freemarker.contentType=text/html
 	spring.freemarker.exposeRequestAttributes=false
 	spring.freemarker.exposeSessionAttributes=false
@@ -129,7 +129,7 @@ content into your application; rather pick only the properties that you need.
 
 	# GROOVY TEMPLATES ({sc-spring-boot-autoconfigure}/groovy/template/GroovyTemplateAutoConfiguration.{sc-ext}[GroovyTemplateAutoConfiguration])
 	spring.groovy.template.cache=true
-	spring.groovy.template.char-set=UTF-8
+	spring.groovy.template.charset=UTF-8
 	spring.groovy.template.configuration.*= # See Groovy's TemplateConfiguration
 	spring.groovy.template.contentType=text/html
 	spring.groovy.template.prefix=classpath:/templates/
@@ -140,7 +140,7 @@ content into your application; rather pick only the properties that you need.
 	spring.velocity.allow-request-override=false
 	spring.velocity.cache=true
 	spring.velocity.check-template-location=true
-	spring.velocity.char-set=UTF-8
+	spring.velocity.charset=UTF-8
 	spring.velocity.content-type=text/html
 	spring.velocity.date-tool-attribute=
 	spring.velocity.expose-Request-attributes=false