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OSChina底层数据库操作的类(QueryHelper)源代码

时间:2021-07-01 10:21:17 帮助过:2人阅读

OSCHINA JDBC 数据库 DbUtils

[1].[代码] QueryHelper.java 跳至 [1]

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 package my.db;   import java.io.Serializable; import java.math.BigInteger; import java.sql.*; import java.util.*;   import my.cache.CacheManager; import net.oschina.Configurations;   import org.apache.commons.dbutils.QueryRunner; import org.apache.commons.dbutils.handlers.*; import org.apache.commons.lang.ArrayUtils;   /**  * 数据库查询助手  * @author Winter Lau<br> */ @SuppressWarnings("unchecked") public class QueryHelper {           private final static QueryRunner _g_runner = new QueryRunner();     private final static ColumnListHandler _g_columnListHandler = new ColumnListHandler(){         @Override         protected Object handleRow(ResultSet rs) throws SQLException {             Object obj = super.handleRow(rs);             if(obj instanceof BigInteger)                 return ((BigInteger)obj).longValue();             return obj;         }               };     private final static ScalarHandler _g_scaleHandler = new ScalarHandler(){         @Override         public Object handle(ResultSet rs) throws SQLException {             Object obj = super.handle(rs);             if(obj instanceof BigInteger)                 return ((BigInteger)obj).longValue();             

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