Problems

Caused by: org.apache.ibatis.type.TypeException: Could not set parameters for mapping: ParameterMapping{property='input', mode=IN, javaType=class java.lang.String, jdbcType=null, numericScale=null, resultMapId='null', jdbcTypeName='null', expression='null'}. Cause: org.apache.ibatis.type.TypeException: Error setting non null
 
 for parameter #1 with JdbcType null . Try setting a different JdbcType for this parameter or a different configuration property. Cause: java.sql.SQLException: No operations allowed after statement closed.

Solution：mybatis SQL語句指定資料型別，比如：#{condition,jdbcType=VARCHAR}

<select id="selectByLike"
 
 resultType="java.lang.String" parameterType="java.lang.String">
        SELECT parameter FROM guns.`search_param`
        <trim prefix="WHERE" prefixOverrides="AND |OR ">
            <if test="condition != null and condition != ''">
                parameter LIKE CONCAT('%',#{condition,jdbcType=VARCHAR},'%')
 

            </if>
        </trim>
        ORDER BY times DESC
    </select>

Stacktrace ：

org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.type.TypeException: Could not set parameters for mapping: ParameterMapping{property='input', mode=IN, javaType=class java.lang.String, jdbcType=null, numericScale=null, resultMapId='null', jdbcTypeName='null', expression='null'}. Cause: org.apache.ibatis.type.TypeException: Error setting non null for parameter #1 with JdbcType null . Try setting a different JdbcType for this parameter or a different configuration property. Cause: java.sql.SQLException: No operations allowed after statement closed.
    at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:77)
    ...
Caused by: org.apache.ibatis.type.TypeException: Could not set parameters for mapping: ParameterMapping{property='input', mode=IN, javaType=class java.lang.String, jdbcType=null, numericScale=null, resultMapId='null', jdbcTypeName='null', expression='null'}. Cause: org.apache.ibatis.type.TypeException: Error setting non null for parameter #1 with JdbcType null . Try setting a different JdbcType for this parameter or a different configuration property. Cause: java.sql.SQLException: No operations allowed after statement closed.
    at com.baomidou.mybatisplus.MybatisDefaultParameterHandler.setParameters(MybatisDefaultParameterHandler.java:272)
    ...
Caused by: org.apache.ibatis.type.TypeException: Error setting non null for parameter #1 with JdbcType null . Try setting a different JdbcType for this parameter or a different configuration property. Cause: java.sql.SQLException: No operations allowed after statement closed.
    at org.apache.ibatis.type.BaseTypeHandler.setParameter(BaseTypeHandler.java:55)
    at com.baomidou.mybatisplus.MybatisDefaultParameterHandler.setParameters(MybatisDefaultParameterHandler.java:270)
    ... 127 common frames omitted
Caused by: java.sql.SQLException: No operations allowed after statement closed.
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:957)
    ...
org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.type.TypeException: Could not set parameters for mapping: ParameterMapping{property='input', mode=IN, javaType=class java.lang.String, jdbcType=null, numericScale=null, resultMapId='null', jdbcTypeName='null', expression='null'}. Cause: org.apache.ibatis.type.TypeException: Error setting non null for parameter #1 with JdbcType null . Try setting a different JdbcType for this parameter or a different configuration property. Cause: java.sql.SQLException: No operations allowed after statement closed.
    ...