增强单字符串比较问题

src/main/java/com/ql/util/express/Operator.java

@@ -45,6 +45,16 @@ public abstract class Operator extends  OperatorBase{
         compareResult = ((String)op1).compareTo(op2.toString());
      }else if(op2 instanceof String){
     	compareResult = op1.toString().compareTo((String)op2);
+     }else if(op1 instanceof Character || op2 instanceof Character){
+         if(op1 instanceof Character && op2 instanceof Character ){
+             compareResult = ((Character) op1) .compareTo ((Character) op2);
+         }else if(op1 instanceof Number){
+             compareResult = OperatorOfNumber.compareNumber((Number)op1, (int)((Character) op2).charValue());
+         }else if(op2 instanceof Number){
+             compareResult = OperatorOfNumber.compareNumber((int)((Character) op1).charValue(),(Number)op2);
+         }else {
+             throw new Exception(op1 + "和" + op2 + "不能执行compare 操作");
+         }
      }else if(op1 instanceof Number && op2 instanceof Number){
    	  //数字比较
    	  compareResult =  OperatorOfNumber.compareNumber((Number)op1, (Number)op2);

src/test/java/com/ql/util/express/bugfix/CompareObjectTest.java

+package com.ql.util.express.bugfix;
+
+import com.ql.util.express.DefaultContext;
+import com.ql.util.express.ExpressRunner;
+import com.ql.util.express.IExpressContext;
+import org.junit.Test;
+
+public class CompareObjectTest {
+    
+    @Test
+    public void test() throws Exception{
+        
+        System.out.println('a'<98);
+        ExpressRunner runner = new ExpressRunner();
+        String[] expList = new String[]{
+                "'a'<'b'",
+                "'a'<='b'",
+                "'a'=='a'",
+                "test=='a'",
+                "test<='a'",
+                "'a'>=test",
+        };
+        IExpressContext<String, Object> context = new DefaultContext<String, Object>();
+        context.put("test",'a'+0);
+        for(String exp : expList) {
+            Object result = runner.execute(exp, context, null, true, false);
+            System.out.println(result);
+            assert (true == result);
+        }
+    }
+}