增加List类型转换成Varchar工具类(有bug)

src/main/java/com/bao/dating/handler/ListToVarcharTypeHandler.java

@@ -0,0 +1,66 @@
+package com.bao.dating.handler;
+
+import org.apache.commons.lang3.StringUtils;
+import org.apache.ibatis.type.JdbcType;
+import org.apache.ibatis.type.MappedJdbcTypes;
+import org.apache.ibatis.type.MappedTypes;
+import org.apache.ibatis.type.TypeHandler;
+
+import java.sql.CallableStatement;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.Arrays;
+import java.util.List;
+
+/**
+ * List类型转换成Varchar类型
+ * @author KilLze
+ */
+@MappedJdbcTypes(JdbcType.VARCHAR)
+@MappedTypes(List.class)
+public class ListToVarcharTypeHandler implements TypeHandler<List<String>> {
+    @Override
+    public void setParameter(PreparedStatement preparedStatement, int i, List<String> strings, JdbcType jdbcType) throws SQLException {
+        // 遍历List类型的入参，拼装为String类型，使用Statement对象插入数据库
+        StringBuffer sb = new StringBuffer();
+        for (int j = 0; j < strings.size(); j++) {
+            if (j == strings.size() - 1) {
+                sb.append(strings.get(j));
+            } else {
+                sb.append(strings.get(j)).append(",");
+            }
+        }
+        preparedStatement.setString(i, sb.toString());
+    }
+
+    @Override
+    public List<String> getResult(ResultSet resultSet, String s) throws SQLException {
+        // 获取String类型的结果，使用","分割为List后返回
+        String resultString = resultSet.getString(s);
+        if (StringUtils.isNotEmpty(resultString)) {
+            return Arrays.asList(resultString.split(","));
+        }
+        return null;
+    }
+
+    @Override
+    public List<String> getResult(ResultSet resultSet, int i) throws SQLException {
+        // 获取String类型的结果，使用","分割为List后返回
+        String resultString = resultSet.getString(i);
+        if (StringUtils.isNotEmpty(resultString)) {
+            return Arrays.asList(resultString.split(","));
+        }
+        return null;
+    }
+
+    @Override
+    public List<String> getResult(CallableStatement callableStatement, int i) throws SQLException {
+        // 获取String类型的结果，使用","分割为List后返回
+        String resultString = callableStatement.getString(i);
+        if (StringUtils.isNotEmpty(resultString)) {
+            return Arrays.asList(resultString.split(","));
+        }
+        return null;
+    }
+}