diff --git a/designer-base/src/main/java/com/fr/design/mainframe/loghandler/DesignerLogHandler.java b/designer-base/src/main/java/com/fr/design/mainframe/loghandler/DesignerLogHandler.java
index b935eb11ea..1d67c47df1 100644
--- a/designer-base/src/main/java/com/fr/design/mainframe/loghandler/DesignerLogHandler.java
+++ b/designer-base/src/main/java/com/fr/design/mainframe/loghandler/DesignerLogHandler.java
@@ -8,6 +8,7 @@ import com.fr.design.ui.util.UIUtil;
 import com.fr.general.ComparatorUtils;
 import com.fr.general.log.Log4jConfig;
 import com.fr.log.FineLoggerFactory;
+import com.fr.stable.StringUtils;
 import com.fr.third.apache.log4j.Level;
 import com.fr.third.apache.log4j.spi.LoggingEvent;
 import com.fr.third.apache.log4j.spi.ThrowableInformation;
@@ -53,12 +54,14 @@ public class DesignerLogHandler {
 
     private static final int SERVER_GAP_Y = -20;
 
-    private static final String ERROR_MARK = com.fr.design.i18n.Toolkit.i18nText("Fine-Design_Basic_Alert") + ":";
+    private static final String ERROR_MARK = com.fr.design.i18n.Toolkit.i18nText("Fine-Design_Basic_Seriously") + ":";
 
-    private static final String WARN_MARK = com.fr.design.i18n.Toolkit.i18nText("Fine-Design_Basic_Seriously") + ":";
+    private static final String WARN_MARK = com.fr.design.i18n.Toolkit.i18nText("Fine-Design_Basic_Alert") + ":";
 
     private static final String NORMAL_MARK = com.fr.design.i18n.Toolkit.i18nText("Fine-Design_Basic_Normal") + ":";
 
+    private static final String ACTION_MAP_KEY = "clear";
+
     public static DesignerLogHandler getInstance() {
 
         return HOLDER.singleton;
@@ -223,14 +226,14 @@ public class DesignerLogHandler {
             InputMap inputMap = resultPane.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
             inputMap.put(KeyStroke.getKeyStroke(KeyEvent.VK_C, DEFAULT_MODIFIER), DefaultEditorKit.copyAction);
             inputMap.put(KeyStroke.getKeyStroke(KeyEvent.VK_A, DEFAULT_MODIFIER), DefaultEditorKit.selectAllAction);
-            inputMap.put(KeyStroke.getKeyStroke(KeyEvent.VK_L, DEFAULT_MODIFIER), "clear");
+            inputMap.put(KeyStroke.getKeyStroke(KeyEvent.VK_L, DEFAULT_MODIFIER), ACTION_MAP_KEY);
             ActionMap actionMap = resultPane.getActionMap();
-            actionMap.put("clear", new AbstractAction() {
+            actionMap.put(ACTION_MAP_KEY, new AbstractAction() {
 
                 @Override
                 public void actionPerformed(ActionEvent evt) {
 
-                    resultPane.setText("");
+                    resultPane.setText(StringUtils.EMPTY);
                     caption.clearMessage();
                 }
             });
@@ -293,10 +296,10 @@ public class DesignerLogHandler {
 
             SimpleAttributeSet attrSet = new SimpleAttributeSet();
             if (style == DesignerLogger.ERROR_INT) {
-                StyleConstants.setForeground(attrSet, new Color(247, 148, 29));
+                StyleConstants.setForeground(attrSet, Color.RED);
                 StyleConstants.setBold(attrSet, true);
             } else if (style == DesignerLogger.WARN_INT) {
-                StyleConstants.setForeground(attrSet, Color.red);
+                StyleConstants.setForeground(attrSet, new Color(247, 148, 29));
                 StyleConstants.setBold(attrSet, true);
             } else if (style == DesignerLogger.INFO_INT) {
                 StyleConstants.setForeground(attrSet, Color.black);
@@ -330,9 +333,9 @@ public class DesignerLogHandler {
             LogMessageBar.getInstance().setMessage(message);
             if (level == DesignerLogger.INFO_INT && showInfo.isSelected()) {
                 caption.infoAdd();
-            } else if (level == DesignerLogger.ERROR_INT && showError.isSelected()) {
+            } else if (level == DesignerLogger.WARN_INT && showError.isSelected()) {
                 caption.errorAdd();
-            } else if (level == DesignerLogger.WARN_INT && showServer.isSelected()) {
+            } else if (level == DesignerLogger.ERROR_INT && showServer.isSelected()) {
                 caption.serverAdd();
             }
         }
@@ -343,7 +346,7 @@ public class DesignerLogHandler {
             this.copy.setEnabled(true);
             this.clear.setEnabled(true);
 
-            if (ComparatorUtils.equals(this.jTextArea.getText(), "")) {
+            if (ComparatorUtils.equals(this.jTextArea.getText(), StringUtils.EMPTY)) {
                 this.selectAll.setEnabled(false);
                 this.clear.setEnabled(false);
             }
@@ -367,7 +370,7 @@ public class DesignerLogHandler {
                 } else if (ComparatorUtils.equals(evt.getActionCommand(), LogHandlerArea.this.copy.getText())) {
                     LogHandlerArea.this.jTextArea.copy();
                 } else if (ComparatorUtils.equals(evt.getActionCommand(), LogHandlerArea.this.clear.getText())) {
-                    LogHandlerArea.this.jTextArea.setText("");
+                    LogHandlerArea.this.jTextArea.setText(StringUtils.EMPTY);
                     caption.clearMessage();
                 }
             }