fix(通知公告): string与blob类型互转报错

springboot/fastbee-service/fastbee-system-service/src/main/java/com/fastbee/system/handle/BlobToStringHandler.java

@@ -0,0 +1,55 @@
+package com.fastbee.system.handle;
+
+import org.apache.ibatis.type.BaseTypeHandler;
+import org.apache.ibatis.type.JdbcType;
+
+import java.io.ByteArrayInputStream;
+import java.io.UnsupportedEncodingException;
+import java.sql.*;
+
+import static cn.hutool.core.io.file.FileWrapper.DEFAULT_CHARSET;
+
+
+public class BlobToStringHandler extends BaseTypeHandler<String> {
+
+    @Override
+    public void setNonNullParameter(PreparedStatement preparedStatement, int i, String parameter, JdbcType jdbcType) throws SQLException {
+        ByteArrayInputStream inputStream;
+        byte[] bytes;
+        bytes = parameter.getBytes(DEFAULT_CHARSET);
+        // 把String转化成byte流
+        inputStream = new ByteArrayInputStream(bytes);
+        preparedStatement.setBinaryStream(i, inputStream, bytes.length);
+    }
+
+    @Override
+    public String getNullableResult(ResultSet resultSet, String columnName) throws SQLException {
+        Blob blob = resultSet.getBlob(columnName);
+        return getBlobToString(blob);
+    }
+
+    @Override
+    public String getNullableResult(ResultSet resultSet, int columnIndex) throws SQLException {
+        Blob blob = resultSet.getBlob(columnIndex);
+        return getBlobToString(blob);
+    }
+
+    @Override
+    public String getNullableResult(CallableStatement callableStatement, int columnIndex) throws SQLException {
+        Blob blob = callableStatement.getBlob(columnIndex);
+        return getBlobToString(blob);
+    }
+
+    private String getBlobToString(Blob blob) throws SQLException {
+        byte[] returnValue = null;
+        String result = null;
+        if (null != blob) {
+            returnValue = blob.getBytes(1, (int) blob.length());
+        }
+        if (null != returnValue) {
+            // 把byte转化成string
+            result = new String(returnValue, DEFAULT_CHARSET);
+        }
+        return result;
+    }
+}

springboot/fastbee-service/fastbee-system-service/src/main/resources/mapper/system/SysNoticeMapper.xml

@@ -8,7 +8,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         <result property="noticeId"       column="notice_id"       />
         <result property="noticeTitle"    column="notice_title"    />
         <result property="noticeType"     column="notice_type"     />
-        <result property="noticeContent"  column="notice_content"  />
+        <result property="noticeContent"  column="notice_content" typeHandler="com.fastbee.system.handle.BlobToStringHandler" />
         <result property="status"         column="status"          />
         <result property="createBy"       column="create_by"       />
         <result property="createTime"     column="create_time"     />
@@ -18,7 +18,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
     </resultMap>
     
     <sql id="selectNoticeVo">
-        select notice_id, notice_title, notice_type, cast(notice_content as char) as notice_content, status, create_by, create_time, update_by, update_time, remark
+        select notice_id, notice_title, notice_type, notice_content, status, create_by, create_time, update_by, update_time, remark
 		from sys_notice
     </sql>
     
@@ -54,7 +54,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
  		)values(
 			<if test="noticeTitle != null and noticeTitle != ''">#{noticeTitle}, </if>
 			<if test="noticeType != null and noticeType != ''">#{noticeType}, </if>
-			<if test="noticeContent != null and noticeContent != ''">#{noticeContent}, </if>
+			<if test="noticeContent != null and noticeContent != ''">#{noticeContent,typeHandler=com.fastbee.system.handle.BlobToStringHandler}, </if>
 			<if test="status != null and status != ''">#{status}, </if>
 			<if test="remark != null and remark != ''">#{remark},</if>
  			<if test="createBy != null and createBy != ''">#{createBy},</if>
@@ -67,7 +67,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         <set>
             <if test="noticeTitle != null and noticeTitle != ''">notice_title = #{noticeTitle}, </if>
             <if test="noticeType != null and noticeType != ''">notice_type = #{noticeType}, </if>
-            <if test="noticeContent != null">notice_content = #{noticeContent}, </if>
+            <if test="noticeContent != null">notice_content = #{noticeContent,typeHandler=com.fastbee.system.handle.BlobToStringHandler}, </if>
             <if test="status != null and status != ''">status = #{status}, </if>
             <if test="updateBy != null and updateBy != ''">update_by = #{updateBy},</if>
  			update_time = CURRENT_TIMESTAMP