java 跨站攻击脚本过滤工具类

package com.example.demo;
 
import com.alibaba.druid.util.StringUtils;
import com.alibaba.fastjson2.JSONObject;
import com.alibaba.fastjson2.TypeReference;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
 
public final class SafeUtil {
    // <替换符1 usage
    private static final String LT = "<";
    private static final String LT_REPLACE = "<";
    // >替换符1 usage
    private static final String GT = ">";
    private static final String GT_REPLACE = ">";
 
 
    public static <T> T processScript(Object jsonString, TypeReference<T> type) {
        if (jsonString == null || type == null){
            return null;
        }
        String input = null;
        try {
            input = new ObjectMapper().writeValueAsString(jsonString);
        } catch (JsonProcessingException e) {
            throw new RuntimeException(e);
        }
        if (StringUtils.isEmpty(input)) {
            return null;
        }
        return JSONObject.parseObject(input.replaceAll(LT, LT_REPLACE).replaceAll(GT, GT_REPLACE), type);
    }
}

使用
 

@RequestMapping("/test")
public Result<String> test(){
    return userService.get();
}
 
新
@RequestMapping("/test")
public Result<String> test(){
    return SafeUtil.processScript(userService.get(), TypeReference<Result<String>>);
}