Fix issue #163 - Excess filter expressions should be disallowed.

json-path/src/main/java/com/jayway/jsonpath/internal/filter/FilterCompiler.java

@@ -109,6 +109,9 @@ public class FilterCompiler {
                         opsStack.push(operatorNode);
                         break;
                     default:
+                        if(expStack.size() > 0 && opsStack.isEmpty()){
+                            throw new InvalidPathException("Expected logical operator (&&, ||) to follow expression " + expStack.peek().toString());
+                        }
                         RelationalExpressionNode relationalExpressionNode = readExpression();
                         expStack.push(relationalExpressionNode);
                         break;

json-path/src/test/java/com/jayway/jsonpath/FilterCompilerTest.java

@@ -72,6 +72,7 @@ public class FilterCompilerTest {
         assertInvalidPathException("[?(@ == 'foo )]");
         assertInvalidPathException("[?(@ == 1' )]");
         assertInvalidPathException("[?(@.foo bar == 1)]");
+        assertInvalidPathException("[?(@.i == 5 @.i == 8)]");
     }
 
 
@@ -80,7 +81,7 @@ public class FilterCompilerTest {
             compile(filter);
             throw new AssertionError("Expected " + filter + " to throw InvalidPathException");
         } catch (InvalidPathException e){
-            //e.printStackTrace();
+            e.printStackTrace();
         }
     }
 }