优化代码

Author: qiushui

pom.xml

@@ -58,17 +58,6 @@
 		</dependency>
 	</dependencies>
 
-	<distributionManagement>
-		<snapshotRepository>
-			<id>ossrh</id>
-			<url>https://oss.sonatype.org/content/repositories/snapshots</url>
-		</snapshotRepository>
-		<repository>
-			<id>ossrh</id>
-			<url>https://oss.sonatype.org/service/local/staging/deploy/maven2/</url>
-		</repository>
-	</distributionManagement>
-
 	<build>
 		<plugins>
 			<plugin>
@@ -135,6 +124,17 @@
 					</plugin>
 				</plugins>
 			</build>
+
+			<distributionManagement>
+				<snapshotRepository>
+					<id>ossrh</id>
+					<url>https://oss.sonatype.org/content/repositories/snapshots</url>
+				</snapshotRepository>
+				<repository>
+					<id>ossrh</id>
+					<url>https://oss.sonatype.org/service/local/staging/deploy/maven2/</url>
+				</repository>
+			</distributionManagement>
 		</profile>
 	</profiles>
 

src/main/java/com/github/developframework/expression/EmptyExpression.java

@@ -1,10 +1,15 @@
 package com.github.developframework.expression;
 
+import lombok.AccessLevel;
+import lombok.NoArgsConstructor;
+
 /**
  * 空表达式
+ *
  * @author qiuzhenhao
  */
-public class EmptyExpression extends Expression{
+@NoArgsConstructor(access = AccessLevel.PRIVATE)
+public class EmptyExpression extends Expression {
 
     public static final EmptyExpression INSTANCE = new EmptyExpression();