如何在aop实现返回值替换成新值

菜狗二哈

于 2023-07-15 17:19:39 发布

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CC 4.0 BY-SA版权

文章标签： java 开发语言

本文链接：https://blog.youkuaiyun.com/linyiwwy/article/details/131741736

该代码示例展示了如何使用@ControllerAdvice和ResponseBodyAdvice在SpringMVC中全局拦截响应，特别是对/test/list路径的响应。当处理到该路径时，它会将JSON对象中的money属性替换为*，以保护敏感信息。

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@ControllerAdvice
public class responAop implements ResponseBodyAdvice {

    @Override
    public boolean supports(MethodParameter methodParameter, Class aClass) {
        return true;
    }

    @Override
    public Object beforeBodyWrite(Object resBody, MethodParameter arg1, MediaType arg2, Class aClass, ServerHttpRequest req,
                                  ServerHttpResponse resp) {
        String requestUri = req.getURI().getPath();
        Object dataedPermission = null;
        if (requestUri.contains("/test/list")) {//拦截的路径
            dataedPermission = handledata(JSONObject.toJSONString(resBody, SerializerFeature.WriteMapNullValue));

        }
        return dataedPermission;
    }
    private Object handledata (String jsonStr){
        jsonStr = replaceSpecialStr(jsonStr, "money");//money为需要替换的属性
        return jsonStr;
    }
    public static String replaceSpecialStr (String orgStr, String fieldName){
        String beginChar = "\"" + fieldName + "\":";
        String newValue = "\"***\"";
        String newStr = orgStr.replaceAll(beginChar + "([-]{0,1}[0-9.]{1,}(E-8){0,1})", beginChar + newValue);
        return newStr;
    }

}