diff --git a/dynamic-datasource-spring/src/main/java/com/baomidou/dynamic/datasource/processor/DsSpelExpressionProcessor.java b/dynamic-datasource-spring/src/main/java/com/baomidou/dynamic/datasource/processor/DsSpelExpressionProcessor.java
index 03c6c36d..6f42c170 100644
--- a/dynamic-datasource-spring/src/main/java/com/baomidou/dynamic/datasource/processor/DsSpelExpressionProcessor.java
+++ b/dynamic-datasource-spring/src/main/java/com/baomidou/dynamic/datasource/processor/DsSpelExpressionProcessor.java
@@ -50,24 +50,9 @@ public class DsSpelExpressionProcessor extends DsProcessor {
      * 对于默认不设置的情况下,从参数中取值的方式 #param1
      * 设置指定模板 ParserContext.TEMPLATE_EXPRESSION 后的取值方式: #{#param1}
      * issues: https://github.com/baomidou/dynamic-datasource-spring-boot-starter/issues/199
+     * issues: https://github.com/baomidou/dynamic-datasource-spring-boot-starter/issues/485
      */
-    private ParserContext parserContext = new ParserContext() {
-
-        @Override
-        public boolean isTemplate() {
-            return false;
-        }
-
-        @Override
-        public String getExpressionPrefix() {
-            return null;
-        }
-
-        @Override
-        public String getExpressionSuffix() {
-            return null;
-        }
-    };
+    private ParserContext parserContext = ParserContext.TEMPLATE_EXPRESSION;
     private BeanResolver beanResolver;
 
     @Override
@@ -82,8 +67,7 @@ public String doDetermineDatasource(MethodInvocation invocation, String key) {
         ExpressionRootObject rootObject = new ExpressionRootObject(method, arguments, invocation.getThis());
         StandardEvaluationContext context = new MethodBasedEvaluationContext(rootObject, method, arguments, NAME_DISCOVERER);
         context.setBeanResolver(beanResolver);
-        final Object value = PARSER.parseExpression(key, parserContext).getValue(context);
-        return value == null ? null : value.toString();
+        return PARSER.parseExpression(key, parserContext).getValue(context, String.class);
     }
 
     /**