解決方法:java
1,寫一個 typehandlersql
package com.aes.util; import java.io.ByteArrayInputStream; import java.io.UnsupportedEncodingException; import java.sql.Blob; import java.sql.CallableStatement; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import org.apache.ibatis.type.BaseTypeHandler; import org.apache.ibatis.type.JdbcType; public class MyBlobTypeHandler extends BaseTypeHandler<String> { //指定字符集 private static final String DEFAULT_CHARSET = "utf-8"; @Override public void setNonNullParameter(PreparedStatement ps, int i, String parameter, JdbcType jdbcType) throws SQLException { ByteArrayInputStream bis; try { //把String轉化成byte流 bis = new ByteArrayInputStream(parameter.getBytes(DEFAULT_CHARSET)); } catch (UnsupportedEncodingException e) { throw new RuntimeException("Blob Encoding Error!"); } ps.setBinaryStream(i, bis, parameter.length()); } @Override public String getNullableResult(ResultSet rs, String columnName) throws SQLException { Blob blob = rs.getBlob(columnName); byte[] returnValue = null; if (null != blob) { returnValue = blob.getBytes(1, (int) blob.length()); } try { //把byte轉化成string return new String(returnValue, DEFAULT_CHARSET); } catch (UnsupportedEncodingException e) { throw new RuntimeException("Blob Encoding Error!"); } } @Override public String getNullableResult(CallableStatement cs, int columnIndex) throws SQLException { Blob blob = cs.getBlob(columnIndex); byte[] returnValue = null; if (null != blob) { returnValue = blob.getBytes(1, (int) blob.length()); } try { return new String(returnValue, DEFAULT_CHARSET); } catch (UnsupportedEncodingException e) { throw new RuntimeException("Blob Encoding Error!"); } } @Override public String getNullableResult(ResultSet rs, int index) throws SQLException { Blob blob = rs.getBlob(index); byte[] returnValue = null; if (null != blob) { returnValue = blob.getBytes(1, (int) blob.length()); } try { //把byte轉化成string return new String(returnValue, DEFAULT_CHARSET); } catch (UnsupportedEncodingException e) { throw new RuntimeException("Blob Encoding Error!"); } } }
2,修改mybatis配置文件apache
<resultMap type="com.aes.wfm.model.ActHiComInfo" id="actHiComInfo"> <id column="id" property="id"/> <result column="userId" property="userId"/> <result column="startTime" property="startTime"/> <result column="endTime" property="endTime"/> <result column="taskName" property="taskName"/> <result column="message" property="message"/> <result column="fullMsg" property="fullMsg" typeHandler="com.aes.util.MyBlobTypeHandler"/> </resultMap>