移除ListStringTypeHandler类，添加通用的GenericListTypeHandler类以支持多种类型的列表处理

ruoyi-common/src/main/java/com/ruoyi/common/handler/GenericListTypeHandler.java

@@ -0,0 +1,131 @@
+package com.ruoyi.common.handler;
+
+import java.sql.CallableStatement;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.function.Function;
+
+import org.apache.ibatis.type.BaseTypeHandler;
+import org.apache.ibatis.type.JdbcType;
+
+import com.ruoyi.common.utils.StringUtils;
+
+/**
+ * 通用的List类型处理器，可处理任何元素类型
+ * 
+ * 用法示例：
+ * 1. 在XML中配置：
+ * {@code <result column="tags" property="tags" 
+ *          typeHandler=
+"com.ruoyi.generator.handler.GenericListTypeHandler$StringList"/>}
+ * 
+ * 2. 在字段上使用注解：
+ * {@code @Result(column="tags", property="tags", 
+ *          typeHandler=GenericListTypeHandler.StringList.class)}
+ *
+ * 3. 在xml插值语法中使用
+ * {@code #{tags,typeHandler=com.ruoyi.common.handler.GenericListTypeHandler$StringList}
+ * }
+ * 
+ * @param <T> 列表元素类型
+ */
+public class GenericListTypeHandler<T> extends BaseTypeHandler<List<T>> {
+
+    private final Function<String, T> converter;
+
+    /**
+     * 构造函数
+     * 
+     * @param converter 字符串到元素类型T的转换器
+     */
+    protected GenericListTypeHandler(Function<String, T> converter) {
+        this.converter = converter;
+    }
+
+    @Override
+    public void setNonNullParameter(PreparedStatement ps, int i, List<T> parameter, JdbcType jdbcType)
+            throws SQLException {
+        String value = StringUtils.join(parameter, ",");
+        ps.setString(i, value);
+    }
+
+    @Override
+    public List<T> getNullableResult(ResultSet rs, String columnName) throws SQLException {
+        return convertToList(rs.getString(columnName));
+    }
+
+    @Override
+    public List<T> getNullableResult(ResultSet rs, int columnIndex) throws SQLException {
+        return convertToList(rs.getString(columnIndex));
+    }
+
+    @Override
+    public List<T> getNullableResult(CallableStatement cs, int columnIndex) throws SQLException {
+        return convertToList(cs.getString(columnIndex));
+    }
+
+    private List<T> convertToList(String value) {
+        if (StringUtils.isBlank(value)) {
+            return null;
+        }
+
+        List<T> list = new ArrayList<>();
+        String[] items = value.split(",");
+        for (String item : items) {
+            if (StringUtils.isNotBlank(item)) {
+                list.add(converter.apply(item.trim()));
+            }
+        }
+        return list;
+    }
+
+    // 内部类 - 常用类型的TypeHandler实现
+
+    /**
+     * String类型列表的TypeHandler
+     */
+    public static class StringList extends GenericListTypeHandler<String> {
+        public StringList() {
+            super(String::valueOf);
+        }
+    }
+
+    /**
+     * Integer类型列表的TypeHandler
+     */
+    public static class IntegerList extends GenericListTypeHandler<Integer> {
+        public IntegerList() {
+            super(Integer::valueOf);
+        }
+    }
+
+    /**
+     * Long类型列表的TypeHandler
+     */
+    public static class LongList extends GenericListTypeHandler<Long> {
+        public LongList() {
+            super(Long::valueOf);
+        }
+    }
+
+    /**
+     * Double类型列表的TypeHandler
+     */
+    public static class DoubleList extends GenericListTypeHandler<Double> {
+        public DoubleList() {
+            super(Double::valueOf);
+        }
+    }
+
+    /**
+     * Boolean类型列表的TypeHandler
+     */
+    public static class BooleanList extends GenericListTypeHandler<Boolean> {
+        public BooleanList() {
+            super(Boolean::valueOf);
+        }
+    }
+}

ruoyi-models/ruoyi-generator/src/main/java/com/ruoyi/generator/handler/ListStringTypeHandler.java

@@ -1,41 +0,0 @@
-package com.ruoyi.generator.handler;
-
-import java.sql.CallableStatement;
-import java.sql.PreparedStatement;
-import java.sql.ResultSet;
-import java.sql.SQLException;
-import java.util.List;
-
-import org.apache.ibatis.type.BaseTypeHandler;
-import org.apache.ibatis.type.JdbcType;
-
-import com.ruoyi.common.utils.StringUtils;
-
-public class ListStringTypeHandler extends BaseTypeHandler<List<String>> {
-
-    @Override
-    public void setNonNullParameter(PreparedStatement ps, int i, List<String> parameter, JdbcType jdbcType)
-            throws SQLException {
-        String value = StringUtils.join(parameter, ",");
-        ps.setString(i, value);
-    }
-
-    @Override
-    public List<String> getNullableResult(ResultSet rs, String columnName) throws SQLException {
-        String value = rs.getString(columnName);
-        return StringUtils.isBlank(value) ? null : StringUtils.str2List(value, ",", true, true);
-    }
-
-    @Override
-    public List<String> getNullableResult(ResultSet rs, int columnIndex) throws SQLException {
-        String value = rs.getString(columnIndex);
-        return StringUtils.isBlank(value) ? null : StringUtils.str2List(value, ",", true, true);
-    }
-
-    @Override
-    public List<String> getNullableResult(CallableStatement cs, int columnIndex) throws SQLException {
-        String value = cs.getString(columnIndex);
-        return StringUtils.isBlank(value) ? null : StringUtils.str2List(value, ",", true, true);
-    }
-
-}

ruoyi-models/ruoyi-generator/src/main/resources/mapper/generator/GenJoinTableMapper.xml

@@ -15,7 +15,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         <result property="joinType" column="join_type" />
         <result property="orderNum" column="order_num"/>
         <result property="newTableId" column="new_table_id"/>
-        <result property="joinColumns" column="join_columns" typeHandler="com.ruoyi.generator.handler.ListStringTypeHandler"/>
+        <result property="joinColumns" column="join_columns" typeHandler="com.ruoyi.common.handler.GenericListTypeHandler$StringList"/>
     </resultMap>
 
     <sql id="selectGenJoinTableVo">
@@ -63,7 +63,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
             <if test="leftTableFk != null">#{leftTableFk},</if>
             <if test="rightTableFk != null">#{rightTableFk},</if>
             <if test="joinType != null">#{joinType},</if>
-            <if test="joinColumns != null">#{joinColumns,typeHandler=com.ruoyi.generator.handler.ListStringTypeHandler},</if>
+            <if test="joinColumns != null">#{joinColumns,typeHandler=com.ruoyi.common.handler.GenericListTypeHandler$StringList},</if>
             <if test="orderNum != null">#{orderNum},</if>
             <if test="newTableId != null">#{newTableId},</if>
         </trim>
@@ -79,7 +79,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
             <if test="leftTableFk != null"> left_table_fk = #{leftTableFk},</if>
             <if test="rightTableFk != null"> right_table_fk = #{rightTableFk},</if>
             <if test="joinType != null">join_type = #{joinType},</if>
-            <if test="joinColumns != null">join_columns = #{joinColumns,typeHandler=com.ruoyi.generator.handler.ListStringTypeHandler},</if>
+            <if test="joinColumns != null">join_columns = #{joinColumns,typeHandler=com.ruoyi.common.handler.GenericListTypeHandler$StringList},</if>
             <if test="orderNum != null">order_num = #{orderNum},</if>
             <if test="newTableId != null">new_table_id = #{newTableId},</if>
         </trim>