解决thin JDBC 对字符串超长限制的问题。
原始错误是:
org.springframework.jdbc.UncategorizedSQLException: SqlMapClient operation; uncategorized SQLException for SQL []; SQL state [null]; error code [17070];
--- The error occurred in com/sinosoft/card/cardKind/db/dao/IC_CARDKINDNOTIFY_SqlMap.xml.
--- The error occurred while applying a parameter map.
--- Check the IC_CARDKINDNOTIFY.abatorgenerated_insert-InlineParameterMap.
--- Check the parameter mapping for the 'value' property.
--- Cause: java.sql.SQLException: 数据大小超出此类型的最大值: 2986; nested exception is com.ibatis.common.jdbc.exception.NestedSQLException:
--- The error occurred in com/sinosoft/card/cardKind/db/dao/IC_CARDKINDNOTIFY_SqlMap.xml.
--- The error occurred while applying a parameter map.
--- Check the IC_CARDKINDNOTIFY.abatorgenerated_insert-InlineParameterMap.
--- Check the parameter mapping for the 'value' property.
--- Cause: java.sql.SQLException: 数据大小超出此类型的最大值: 2986
at org.springframework.jdbc.support.SQLStateSQLExceptionTranslator.translate(SQLStateSQLExceptionTranslator.java:124)
at org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator.translate(SQLErrorCodeSQLExceptionTranslator.java:322)
分析结果见
http://blog.csdn.net/ruanee/archive/2006/03/24/637213.aspx
http://www.tomjamescn.cn/?p=63
后面的文章直接hack了ibatis的StringTypeHandler,完全没有必要
我的解决方法:1、扩展StringTypeHandler为LargeStringTypeHandler
Java代码 复制代码 收藏代码
package com.xxxx.component.ibatis.typehandler;
import java.io.StringReader;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import com.ibatis.sqlmap.engine.type.StringTypeHandler;
/**
* For using LargeStringTypeHandler, you must add a line in SqlMapConfig.xml as following:<br/>
* <typeHandler javaType="java.lang.String" callback="com.sinosoft.component.ibatis.typehandler.LargeStringTypeHandler"/>
* @author airlink
* @see http://blog.csdn.net/ruanee/archive/2006/03/24/637213.aspx
* @see http://www.tomjamescn.cn/?p=63
*/
public class LargeStringTypeHandler extends StringTypeHandler {
public void setParameter(PreparedStatement ps, int i, Object parameter, String jdbcType)
throws SQLException {
String s = (String)parameter;
if (s.length() < 667) {
//assume that all characters are chinese characters.
super.setParameter(ps, i, parameter, jdbcType);
}else{
//use setCharacterStream can insert more characters.
ps.setCharacterStream(i, new StringReader(s), s.length());
}
}
}
[java] view plaincopy
package com.xxxx.component.ibatis.typehandler;
import java.io.StringReader;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import com.ibatis.sqlmap.engine.type.StringTypeHandler;
/**
* For using LargeStringTypeHandler, you must add a line in SqlMapConfig.xml as following:<br/>
* <typeHandler javaType="java.lang.String" callback="com.sinosoft.component.ibatis.typehandler.LargeStringTypeHandler"/>
* @author airlink
* @see http://blog.csdn.net/ruanee/archive/2006/03/24/637213.aspx
* @see http://www.tomjamescn.cn/?p=63
*/
public class LargeStringTypeHandler extends StringTypeHandler {
public void setParameter(PreparedStatement ps, int i, Object parameter, String jdbcType)
throws SQLException {
String s = (String)parameter;
if (s.length() < 667) {
//assume that all characters are chinese characters.
super.setParameter(ps, i, parameter, jdbcType);
}else{
//use setCharacterStream can insert more characters.
ps.setCharacterStream(i, new StringReader(s), s.length());
}
}
}
2、在SqlMapConfig.xml中添加一行
<typeHandler javaType="java.lang.String" callback="com.sinosoft.component.ibatis.typehandler.LargeStringTypeHandler"/>
问题解决。
--转自
该贴由koei123转至本版2015-2-5 17:35:25