fix watch/trace exclude class pattern #1638

core/src/main/java/com/taobao/arthas/core/command/monitor200/MonitorCommand.java

@@ -117,7 +117,7 @@ public class MonitorCommand extends EnhancerCommand {
 
     @Override
     protected Matcher getClassNameExcludeMatcher() {
-        if (classNameExcludeMatcher == null) {
+        if (classNameExcludeMatcher == null && getExcludeClassPattern() != null) {
             classNameExcludeMatcher = SearchUtils.classNameMatcher(getExcludeClassPattern(), isRegEx());
         }
         return classNameExcludeMatcher;

core/src/main/java/com/taobao/arthas/core/command/monitor200/StackCommand.java

@@ -95,7 +95,7 @@ public class StackCommand extends EnhancerCommand {
 
     @Override
     protected Matcher getClassNameExcludeMatcher() {
-        if (classNameExcludeMatcher == null) {
+        if (classNameExcludeMatcher == null && getExcludeClassPattern() != null) {
             classNameExcludeMatcher = SearchUtils.classNameMatcher(getExcludeClassPattern(), isRegEx());
         }
         return classNameExcludeMatcher;

core/src/main/java/com/taobao/arthas/core/command/monitor200/TimeTunnelCommand.java

@@ -307,7 +307,7 @@ public class TimeTunnelCommand extends EnhancerCommand {
 
     @Override
     protected Matcher getClassNameExcludeMatcher() {
-        if (classNameExcludeMatcher == null) {
+        if (classNameExcludeMatcher == null && getExcludeClassPattern() != null) {
             classNameExcludeMatcher = SearchUtils.classNameMatcher(getExcludeClassPattern(), isRegEx());
         }
         return classNameExcludeMatcher;

core/src/main/java/com/taobao/arthas/core/command/monitor200/TraceCommand.java

@@ -136,7 +136,7 @@ public class TraceCommand extends EnhancerCommand {
 
     @Override
     protected Matcher getClassNameExcludeMatcher() {
-        if (classNameExcludeMatcher == null) {
+        if (classNameExcludeMatcher == null && getExcludeClassPattern() != null) {
             classNameExcludeMatcher = SearchUtils.classNameMatcher(getExcludeClassPattern(), isRegEx());
         }
         return classNameExcludeMatcher;

core/src/main/java/com/taobao/arthas/core/command/monitor200/WatchCommand.java

@@ -176,7 +176,7 @@ public class WatchCommand extends EnhancerCommand {
 
     @Override
     protected Matcher getClassNameExcludeMatcher() {
-        if (classNameExcludeMatcher == null) {
+        if (classNameExcludeMatcher == null && getExcludeClassPattern() != null) {
             classNameExcludeMatcher = SearchUtils.classNameMatcher(getExcludeClassPattern(), isRegEx());
         }
         return classNameExcludeMatcher;