APIJSON.NET/APIJSON.NET/APIJSON.Data/SelectTable.cs at master · david0718/APIJSON.NET

832 lines (759 loc) · 30.4 KB
﻿namespace APIJSON.Data;
using AspectCore.Extensions.Reflection;
using global::SqlSugar;
using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.Dynamic;
using System.Linq;
using System.Text.RegularExpressions;
/// <summary>
/// </summary>
public class SelectTable
    private readonly IIdentityService _identitySvc;
    private readonly ITableMapper _tableMapper;
    private readonly SqlSugarClient db;
    /// <summary>
    /// </summary>
    /// <param name="identityService"></param>
    /// <param name="tableMapper"></param>
    /// <param name="dbClient"></param>
    public SelectTable(IIdentityService identityService, ITableMapper tableMapper, SqlSugarClient dbClient)
        _identitySvc = identityService;
        _tableMapper = tableMapper;
        db = dbClient;
    /// <summary>
    /// 判断表名是否正确
    /// </summary>
    /// <param name="table"></param>
    /// <returns></returns>
    public virtual bool IsTable(string table)
        return db.DbMaintenance.GetTableInfoList().Any(it => it.Name.Equals(table, StringComparison.CurrentCultureIgnoreCase));
    /// <summary>
    /// 判断表的列名是否正确
    /// </summary>
    /// <param name="table"></param>
    /// <param name="col"></param>
    /// <returns></returns>
    public virtual bool IsCol(string table, string col)
        return db.DbMaintenance.GetColumnInfosByTableName(table).Any(it => it.DbColumnName.Equals(col, StringComparison.CurrentCultureIgnoreCase));
    /// <summary>
    /// </summary>
    /// <param name="subtable"></param>
    /// <param name="page"></param>
    /// <param name="count"></param>
    /// <param name="json"></param>
    /// <param name="dd"></param>
    /// <returns></returns>
    public virtual Tuple<dynamic, int> GetTableData(string subtable, int page, int count, int query, string json, JObject dd)
        var role = _identitySvc.GetSelectRole(subtable);
        if (!role.Item1)//没有权限返回异常
            throw new Exception(role.Item2);
        string selectrole = role.Item2;
        subtable = _tableMapper.GetTableName(subtable);
        JObject values = JObject.Parse(json);
        page = values["page"] == null ? page : int.Parse(values["page"].ToString());
        count = values["count"] == null ? count : int.Parse(values["count"].ToString());
        query = values["query"] == null ? query : int.Parse(values["query"].ToString());
        values.Remove("page");
        values.Remove("count");
        var tb = sugarQueryable(subtable, selectrole, values, dd);
        if (query == 1)//1-总数
            return new Tuple<dynamic, int>(new List<object>(), tb.Count());
        else
            if (count > 0)
                int total = 0;
                if (query == 0)//0-对象
                    return new Tuple<dynamic, int>(tb.ToPageList(page, count), total);
                    //2-以上全部
                    return new Tuple<dynamic, int>(tb.ToPageList(page, count, ref total), total);
            else
                if (query == 0)
                    return new Tuple<dynamic, int>(tb.ToList(), 0);
                    return new Tuple<dynamic, int>(tb.ToList(), tb.Count());
    /// <summary>
    /// 解析并查询
    /// </summary>
    /// <param name="query"></param>
    /// <returns></returns>
    public virtual JObject Query(string queryJson)
        JObject resultObj = new JObject();
        JObject queryJobj = JObject.Parse(queryJson);
        resultObj = Query(queryJobj);
        return resultObj;
    /// <summary>
    /// 单表查询
    /// </summary>
    /// <param name="queryObj"></param>
    /// <param name="nodeName">返回数据的节点名称  默认为 infos</param>
    /// <returns></returns>
    public virtual JObject QuerySingle(JObject queryObj, string nodeName = "infos")
        JObject resultObj = new JObject();
        resultObj.Add("code", "200");
        resultObj.Add("msg", "success");
        int total = 0;
        foreach (var item in queryObj)
            string key = item.Key.Trim();
            if (key.EndsWith("[]"))
                total = QuerySingleList(resultObj, item, nodeName);
            else if (key.Equals("func"))
                ExecFunc(resultObj, item);
            else if (key.Equals("total@")|| key.Equals("total"))
                resultObj.Add("total", total);
        return resultObj;
    /// <summary>
    /// 获取查询语句
    /// </summary>
    /// <param name="queryObj"></param>
    /// <returns></returns>
    public virtual string ToSql(JObject queryObj)
        foreach (var item in queryObj)
            string key = item.Key.Trim();
            if (key.EndsWith("[]"))
                return ToSql(item);
        return string.Empty;
    /// <summary>
    /// 解析并查询
    /// </summary>
    /// <param name="query"></param>
    /// <returns></returns>
    public virtual JObject Query(JObject queryObj)
        JObject resultObj = new JObject();
        resultObj.Add("code", "200");
        resultObj.Add("msg", "success");
        int total = 0;
        foreach (var item in queryObj)
            string key = item.Key.Trim();
            if (key.Equals("[]"))
                total = QueryMoreList(resultObj, item);
            else if (key.EndsWith("[]"))
                total = QuerySingleList(resultObj, item);
            else if (key.Equals("func"))
                ExecFunc(resultObj, item);
            else if (key.Equals("total@")|| key.Equals("total"))
                resultObj.Add("total", total);
            else
                var template = GetFirstData(key, item.Value.ToString(), resultObj);
                if (template != null)
                    resultObj.Add(key, JToken.FromObject(template));
        return resultObj;
    //动态调用方法
    private object ExecFunc(string funcname, object[] param, Type[] types)
        var method = typeof(FuncList).GetMethod(funcname);
        var reflector = method.GetReflector();
        var result = reflector.Invoke(new FuncList(), param);
        return result;
    //生成sql
    private string ToSql(string subtable, int page, int count, int query, string json)
        JObject values = JObject.Parse(json);
        page = values["page"] == null ? page : int.Parse(values["page"].ToString());
        count = values["count"] == null ? count : int.Parse(values["count"].ToString());
        query = values["query"] == null ? query : int.Parse(values["query"].ToString());
        values.Remove("page");
        values.Remove("count");
        subtable = _tableMapper.GetTableName(subtable);
        var tb = sugarQueryable(subtable, "*", values, null);
        var sqlObj = tb.Skip((page - 1) * count).Take(10).ToSql();
        return sqlObj.Key;
    private dynamic GetFirstData(string subtable, string json, JObject job)
        var role = _identitySvc.GetSelectRole(subtable);
        if (!role.Item1)//没有权限返回异常
            throw new Exception(role.Item2);
        string selectrole = role.Item2;
        subtable = _tableMapper.GetTableName(subtable);
        JObject values = JObject.Parse(json);
        values.Remove("page");
        values.Remove("count");
        var tb = sugarQueryable(subtable, selectrole, values, job).First();
        var dic = (IDictionary<string, object>)tb;
        foreach (var item in values.Properties().Where(it => it.Name.EndsWith("()")))
            if (item.Value.IsValue())
                string func = item.Value.ToString().Substring(0, item.Value.ToString().IndexOf("("));
                string param = item.Value.ToString().Substring(item.Value.ToString().IndexOf("(") + 1).TrimEnd(')');
                var types = new List<Type>();
                var paramss = new List<object>();
                foreach (var va in param.Split(','))
                    types.Add(typeof(object));
                    paramss.Add(tb.Where(it => it.Key.Equals(va)).Select(i => i.Value));
                dic[item.Name] = ExecFunc(func, paramss.ToArray(), types.ToArray());
        return tb;
    //单表查询,返回的数据在指定的NodeName节点
    private int QuerySingleList(JObject resultObj, KeyValuePair<string, JToken> item, string nodeName)
        string key = item.Key.Trim();
        var jb = JObject.Parse(item.Value.ToString());
        int page = jb["page"] == null ? 0 : int.Parse(jb["page"].ToString());
        int count = jb["count"] == null ? 10 : int.Parse(jb["count"].ToString());
        int query = jb["query"] == null ? 0 : int.Parse(jb["query"].ToString());
        int total = 0;
        jb.Remove("page"); jb.Remove("count"); jb.Remove("query");
        var htt = new JArray();
        foreach (var t in jb)
            var datas = GetTableData(t.Key, page, count, query, t.Value.ToString(), null);
            if (query > 0)
                total = datas.Item2;
            foreach (var data in datas.Item1)
                htt.Add(JToken.FromObject(data));
        if (!string.IsNullOrEmpty(nodeName))
            resultObj.Add(nodeName, htt);
        else
            resultObj.Add(key, htt);
        return total;
    //生成sql
    private string ToSql(KeyValuePair<string, JToken> item)
        string key = item.Key.Trim();
        var jb = JObject.Parse(item.Value.ToString());
        int page = jb["page"] == null ? 0 : int.Parse(jb["page"].ToString());
        int count = jb["count"] == null ? 10 : int.Parse(jb["count"].ToString());
        int query = jb["query"] == null ? 0 : int.Parse(jb["query"].ToString());
        jb.Remove("page"); jb.Remove("count"); jb.Remove("query");
        var htt = new JArray();
        foreach (var t in jb)
            return ToSql(t.Key, page, count, query, t.Value.ToString());
        return string.Empty;
    private int QuerySingleList(JObject resultObj, KeyValuePair<string, JToken> item)
        string key = item.Key.Trim();
        return QuerySingleList(resultObj, item, key);
    //多列表查询
    private int QueryMoreList(JObject resultObj, KeyValuePair<string, JToken> item)
        int total = 0;
        var jb = JObject.Parse(item.Value.ToString());
        var page = jb["page"] == null ? 0 : int.Parse(jb["page"].ToString());
        var count = jb["count"] == null ? 10 : int.Parse(jb["count"].ToString());
        var query = jb["query"] == null ? 0 : int.Parse(jb["query"].ToString());
        jb.Remove("page"); jb.Remove("count"); jb.Remove("query");
        var htt = new JArray();
        List<string> tables = new List<string>(), where = new List<string>();
        foreach (var t in jb)
            tables.Add(t.Key); where.Add(t.Value.ToString());
        if (tables.Count > 0)
            string table = tables[0];
            var temp = GetTableData(table, page, count, query, where[0], null);
            if (query > 0)
                total = temp.Item2;
            foreach (var dd in temp.Item1)
                var zht = new JObject();
                zht.Add(table, JToken.FromObject(dd));
                for (int i = 1; i < tables.Count; i++)
                    string subtable = tables[i];
                    if (subtable.EndsWith("[]"))
                        subtable = subtable.TrimEnd("[]".ToCharArray());
                        var jbb = JObject.Parse(where[i]);
                        page = jbb["page"] == null ? 0 : int.Parse(jbb["page"].ToString());
                        count = jbb["count"] == null ? 0 : int.Parse(jbb["count"].ToString());
                        var lt = new JArray();
                        foreach (var d in GetTableData(subtable, page, count, query, jbb[subtable].ToString(), zht).Item1)
                            lt.Add(JToken.FromObject(d));
                        zht.Add(tables[i], lt);
                        var ddf = GetFirstData(subtable, where[i].ToString(), zht);
                        if (ddf != null)
                            zht.Add(subtable, JToken.FromObject(ddf));
                htt.Add(zht);
        if (query != 1)
            resultObj.Add("[]", htt);
        return total;
    private void ExecFunc(JObject resultObj, KeyValuePair<string, JToken> item)
        JObject jb = JObject.Parse(item.Value.ToString());
        Type type = typeof(FuncList);
        var dataJObj = new JObject();
        foreach (var f in jb)
            var types = new List<Type>();
            var param = new List<object>();
            foreach (var va in JArray.Parse(f.Value.ToString()))
                types.Add(typeof(object));
                param.Add(va);
            dataJObj.Add(f.Key, JToken.FromObject(ExecFunc(f.Key, param.ToArray(), types.ToArray())));
        resultObj.Add("func", dataJObj);
    private ISugarQueryable<ExpandoObject> sugarQueryable(string subtable, string selectrole, JObject values, JObject dd)
        if (!IsTable(subtable))
            throw new Exception($"表名{subtable}不正确！");
        var tb = db.Queryable(subtable, "tb");
        if (values["@column"].IsValue())
            ProcessColumn(subtable, selectrole, values, tb);
        else
            tb.Select(selectrole);
        List<IConditionalModel> conModels = new List<IConditionalModel>();
        if (values["identity"].IsValue())
            conModels.Add(new ConditionalModel() { FieldName = values["identity"].ToString(), ConditionalType = ConditionalType.Equal, FieldValue = _identitySvc.GetUserIdentity() });
        foreach (var va in values)
            string vakey = va.Key.Trim();
            string fieldValue = va.Value.ToString();
            if (vakey.StartsWith("@"))
                continue;
            if (vakey.EndsWith("$"))//模糊查询
                FuzzyQuery(subtable, conModels, va);
            else if (vakey.EndsWith("{}"))//逻辑运算
                ConditionQuery(subtable, conModels, va);
            else if (vakey.EndsWith("%"))//bwtween查询
                ConditionBetween(subtable, conModels, va);
            else if (vakey.EndsWith("@") && dd != null) // 关联上一个table
                string[] str = fieldValue.Split('/');
                string value = string.Empty;
                if (str.Length == 3)
                    value = dd[str[1]][str[2]].ToString();
                else if (str.Length == 2)
                    value = dd[str[0]][str[1]].ToString();
                conModels.Add(new ConditionalModel() { FieldName = vakey.TrimEnd('@'), ConditionalType = ConditionalType.Equal, FieldValue = value });
            else if (vakey.EndsWith("~"))//不等于
                conModels.Add(new ConditionalModel() { FieldName = vakey.TrimEnd('~'), ConditionalType = ConditionalType.NoEqual, FieldValue = fieldValue });
            else if (IsCol(subtable, vakey)) //其他where条件
                conModels.Add(new ConditionalModel() { FieldName = vakey, ConditionalType = ConditionalType.Equal, FieldValue = fieldValue });
        tb.Where(conModels);
        //排序
        ProcessOrder(subtable, values, tb);
        //分组
        PrccessGroup(subtable, values, tb);
        //Having
        ProcessHaving(values, tb);
        return tb;
    //处理字段重命名 "@column":"toId:parentId"，对应SQL是toId AS parentId，将查询的字段toId变为parentId返回
    private void ProcessColumn(string subtable, string selectrole, JObject values, ISugarQueryable<ExpandoObject> tb)
        var str = new System.Text.StringBuilder(100);
        foreach (var item in values["@column"].ToString().Split(','))
            string[] ziduan = item.Split(':');
            string colName = ziduan[0];
            var ma = new Regex(@"\((\w+)\)").Match(colName);
            //处理max，min这样的函数
            if (ma.Success && ma.Groups.Count > 1)
                colName = ma.Groups[1].Value;
            //判断列表是否有权限  sum(1)，sum(*),Count(1)这样的值直接有效
            if (colName == "*" || int.TryParse(colName, out int colNumber) || (IsCol(subtable, colName) && _identitySvc.ColIsRole(colName, selectrole.Split(','))))
                if (ziduan.Length > 1)
                    if (ziduan[1].Length > 20)
                        throw new Exception("别名不能超过20个字符");
                    str.Append(ziduan[0] + " as `" + ReplaceSQLChar(ziduan[1]) + "`,");
                //不对函数加``,解决sum(*),Count(1)等不能使用的问题
                else if (ziduan[0].Contains('('))
                    str.Append(ziduan[0] + ",");
                    str.Append("`" + ziduan[0] + "`" + ",");
        if (string.IsNullOrEmpty(str.ToString()))
            throw new Exception($"表名{subtable}没有可查询的字段！");
        tb.Select(str.ToString().TrimEnd(','));
    // "@having":"function0(...)?value0;function1(...)?value1;function2(...)?value2..."，
    // SQL函数条件，一般和 @group一起用，函数一般在 @column里声明
    private void ProcessHaving(JObject values, ISugarQueryable<ExpandoObject> tb)
        if (values["@having"].IsValue())
            List<IConditionalModel> hw = new List<IConditionalModel>();
            List<string> havingItems = new List<string>();
            if (values["@having"].HasValues)
                havingItems = values["@having"].Select(p => p.ToString()).ToList();
            else
                havingItems.Add(values["@having"].ToString());
            foreach (var item in havingItems)
                string and = item.ToString();
                var model = new ConditionalModel();
                if (and.Contains(">="))
                    model.FieldName = and.Split(new string[] { ">=" }, StringSplitOptions.RemoveEmptyEntries)[0];
                    model.ConditionalType = ConditionalType.GreaterThanOrEqual;
                    model.FieldValue = and.Split(new string[] { ">=" }, StringSplitOptions.RemoveEmptyEntries)[1];
                else if (and.Contains("<="))
                    model.FieldName = and.Split(new string[] { "<=" }, StringSplitOptions.RemoveEmptyEntries)[0];
                    model.ConditionalType = ConditionalType.LessThanOrEqual;
                    model.FieldValue = and.Split(new string[] { "<=" }, StringSplitOptions.RemoveEmptyEntries)[1];
                else if (and.Contains(">"))
                    model.FieldName = and.Split(new string[] { ">" }, StringSplitOptions.RemoveEmptyEntries)[0];
                    model.ConditionalType = ConditionalType.GreaterThan;
                    model.FieldValue = and.Split(new string[] { ">" }, StringSplitOptions.RemoveEmptyEntries)[1];
                else if (and.Contains("<"))
                    model.FieldName = and.Split(new string[] { "<" }, StringSplitOptions.RemoveEmptyEntries)[0];
                    model.ConditionalType = ConditionalType.LessThan;
                    model.FieldValue = and.Split(new string[] { "<" }, StringSplitOptions.RemoveEmptyEntries)[1];
                else if (and.Contains("!="))
                    model.FieldName = and.Split(new string[] { "!=" }, StringSplitOptions.RemoveEmptyEntries)[0];
                    model.ConditionalType = ConditionalType.NoEqual;
                    model.FieldValue = and.Split(new string[] { "!=" }, StringSplitOptions.RemoveEmptyEntries)[1];
                else if (and.Contains("="))
                    model.FieldName = and.Split(new string[] { "=" }, StringSplitOptions.RemoveEmptyEntries)[0];
                    model.ConditionalType = ConditionalType.Equal;
                    model.FieldValue = and.Split(new string[] { "=" }, StringSplitOptions.RemoveEmptyEntries)[1];
                hw.Add(model);
            //var d = db.Context.Utilities.ConditionalModelToSql(hw);
            //tb.Having(d.Key, d.Value);
            tb.Having(string.Join(",", havingItems));
    //"@group":"column0,column1..."，分组方式。如果 @column里声明了Table的id，则id也必须在 @group中声明；其它情况下必须满足至少一个条件:
    //1.分组的key在 @column里声明
    //2.Table主键在 @group中声明
    private void PrccessGroup(string subtable, JObject values, ISugarQueryable<ExpandoObject> tb)
        if (values["@group"].IsValue())
            var str = new System.Text.StringBuilder(100);
            foreach (var and in values["@group"].ToString().Split(','))
                if (IsCol(subtable, and))
                    str.Append(and + ",");
            tb.GroupBy(str.ToString().TrimEnd(','));
    //处理排序 "@order":"name-,id"查询按 name降序、id默认顺序 排序的User数组
    private void ProcessOrder(string subtable, JObject values, ISugarQueryable<ExpandoObject> tb)
        if (values["@order"].IsValue())
            foreach (var item in values["@order"].ToString().Split(','))
                string col = item.Replace("-", "").Replace("+", "");
                if (IsCol(subtable, col))
                    if (item.EndsWith("-"))
                        tb.OrderBy($"{col} desc");
                    else if (item.EndsWith("+"))
                        tb.OrderBy($"{col} asc");
                        tb.OrderBy($"{col}");
    //条件查询 "key{}":"条件0,条件1..."，条件为任意SQL比较表达式字符串，非Number类型必须用''包含条件的值，如'a'
    //&, |, ! 逻辑运算符，对应数据库 SQL 中的 AND, OR, NOT。 
    //   横或纵与：同一字段的值内条件默认 | 或连接，不同字段的条件默认 & 与连接。 
    //   ① & 可用于"key&{}":"条件"等 
    //   ② | 可用于"key|{}":"条件", "key|{}":[] 等，一般可省略 
    //   ③ ! 可单独使用，如"key!":Object，也可像&,|一样配合其他功能符使用
    private void ConditionQuery(string subtable, List<IConditionalModel> conModels, KeyValuePair<string, JToken> va)
        string vakey = va.Key.Trim();
        string field = vakey.TrimEnd("{}".ToCharArray());
        if (va.Value.HasValues)
            List<string> inValues = new List<string>();
            foreach (var cm in va.Value)
                inValues.Add(cm.ToString());
            conModels.Add(new ConditionalModel()
                FieldName = field.TrimEnd("!".ToCharArray()),
                ConditionalType = field.EndsWith("!") ? ConditionalType.NotIn : ConditionalType.In,
                FieldValue = string.Join(",", inValues)
        else
            var ddt = new List<KeyValuePair<WhereType, ConditionalModel>>();
            foreach (var and in va.Value.ToString().Split(','))
                var model = new ConditionalModel();
                model.FieldName = field.TrimEnd("&".ToCharArray());//处理&()的查询方式
                if (and.StartsWith(">="))
                    model.ConditionalType = ConditionalType.GreaterThanOrEqual;
                    model.FieldValue = and.TrimStart(">=".ToCharArray());
                else if (and.StartsWith("<="))
                    model.ConditionalType = ConditionalType.LessThanOrEqual;
                    model.FieldValue = and.TrimStart("<=".ToCharArray());
                else if (and.StartsWith(">"))
                    model.ConditionalType = ConditionalType.GreaterThan;
                    model.FieldValue = and.TrimStart('>');
                else if (and.StartsWith("<"))
                    model.ConditionalType = ConditionalType.LessThan;
                    model.FieldValue = and.TrimStart('<');
                ddt.Add(new KeyValuePair<WhereType, ConditionalModel>((field.EndsWith("&") ? WhereType.And : WhereType.Or), model));
            conModels.Add(new ConditionalCollections() { ConditionalList = ddt });
    //"key%":"start,end" => "key%":["start,end"]，其中 start 和 end 都只能为 Boolean, Number, String 中的一种，如 "2017-01-01,2019-01-01" ，["1,90000", "82001,100000"] ，可用于连续范围内的筛选
    private void ConditionBetween(string subtable, List<IConditionalModel> conModels, KeyValuePair<string, JToken> va)
        string vakey = va.Key.Trim();
        string field = vakey.TrimEnd("%".ToCharArray());
        List<string> inValues = new List<string>();
        if (va.Value.HasValues)
            foreach (var cm in va.Value)
                inValues.Add(cm.ToString());
        else
            inValues.Add(va.Value.ToString());
        for (var i = 0; i < inValues.Count; i++)
            var fileds = inValues[i].Split(',');
            if (fileds.Length == 2)
                var ddt = new List<KeyValuePair<WhereType, ConditionalModel>>();
                var leftCondition = new ConditionalModel()
                    FieldName = field,
                    ConditionalType = ConditionalType.GreaterThanOrEqual,
                    FieldValue = fileds[0]
                ddt.Add(new KeyValuePair<WhereType, ConditionalModel>(i == 0 ? WhereType.And : WhereType.Or, leftCondition));
                var rightCondition = new ConditionalModel()
                    FieldName = field,
                    ConditionalType = ConditionalType.LessThanOrEqual,
                    FieldValue = fileds[1]
                ddt.Add(new KeyValuePair<WhereType, ConditionalModel>(WhereType.And, rightCondition));
                conModels.Add(new ConditionalCollections() { ConditionalList = ddt });
    //模糊搜索	"key$":"SQL搜索表达式" => "key$":["SQL搜索表达式"]，任意SQL搜索表达式字符串，如 %key%(包含key), key%(以key开始), %k%e%y%(包含字母k,e,y) 等，%表示任意字符
    private void FuzzyQuery(string subtable, List<IConditionalModel> conModels, KeyValuePair<string, JToken> va)
        string vakey = va.Key.Trim();
        string fieldValue = va.Value.ToString();
        var conditionalType = ConditionalType.Like;
        if (IsCol(subtable, vakey.TrimEnd('$')))
            //支持三种like查询
            if (fieldValue.StartsWith("%") && fieldValue.EndsWith("%"))
                conditionalType = ConditionalType.Like;
            else if (fieldValue.StartsWith("%"))
                conditionalType = ConditionalType.LikeRight;
            else if (fieldValue.EndsWith("%"))
                conditionalType = ConditionalType.LikeLeft;
            conModels.Add(new ConditionalModel() { FieldName = vakey.TrimEnd('$'), ConditionalType = conditionalType, FieldValue = fieldValue.TrimEnd("%".ToArray()).TrimStart("%".ToArray()) });
    //处理sql注入
    private string ReplaceSQLChar(string str)
        if (str == String.Empty)
            return String.Empty;
        str = str.Replace("'", "");
        str = str.Replace(";", "");
        str = str.Replace(",", "");
        str = str.Replace("?", "");
        str = str.Replace("<", "");
        str = str.Replace(">", "");
        str = str.Replace("(", "");
        str = str.Replace(")", "");
        str = str.Replace("@", "");
        str = str.Replace("=", "");
        str = str.Replace("+", "");
        str = str.Replace("*", "");
        str = str.Replace("&", "");
        str = str.Replace("#", "");
        str = str.Replace("%", "");
        str = str.Replace("$", "");
        str = str.Replace("\"", "");
        //删除与数据库相关的词
        str = Regex.Replace(str, "delete from", "", RegexOptions.IgnoreCase);
        str = Regex.Replace(str, "drop table", "", RegexOptions.IgnoreCase);
        str = Regex.Replace(str, "truncate", "", RegexOptions.IgnoreCase);
        str = Regex.Replace(str, "xp_cmdshell", "", RegexOptions.IgnoreCase);
        str = Regex.Replace(str, "exec master", "", RegexOptions.IgnoreCase);
        str = Regex.Replace(str, "net localgroup administrators", "", RegexOptions.IgnoreCase);
        str = Regex.Replace(str, "net user", "", RegexOptions.IgnoreCase);
        str = Regex.Replace(str, "-", "", RegexOptions.IgnoreCase);
        str = Regex.Replace(str, "truncate", "", RegexOptions.IgnoreCase);
        return str;
FilesExpand file tree

SelectTable.cs

Latest commit

History

SelectTable.cs

File metadata and controls
