解决：oracle+myBatis ResultMap 类型为 map 时，表字段类型有 Long/Blob/Clob 时报错

这些 typeHandle 类源码：

package com.yule.querydb.typehandler;

import org.apache.ibatis.type.BaseTypeHandler;
import org.apache.ibatis.type.JdbcType;
import org.apache.ibatis.type.MappedJdbcTypes;
import org.apache.ibatis.type.MappedTypes;

import java.io.StringReader;
import java.sql.*;

/**
 * 自定义处理 JdbcType.Blob 和 java Object（String）
 * 处理转 json 报错，将 oracle.sql.Clob 类型转为 String 类型
 * copy org.apache.ibatis.type.ClobTypeHandler 类的处理
 * @author yule
 * @date 2018/10/9 17:57
 */
@MappedTypes({Object.class})
@MappedJdbcTypes(value = {JdbcType.CLOB})
public class MyObjectClobTypeHandle extends BaseTypeHandler<Object> {

    @Override
    public void setNonNullParameter(PreparedStatement ps, int i, Object parameter, JdbcType jdbcType) throws SQLException {
        String parameterStr = (String) parameter;
        StringReader reader = new StringReader(parameterStr);
        ps.setCharacterStream(i, reader, parameterStr.length());
    }

    @Override
    public Object getNullableResult(ResultSet rs, String columnName) throws SQLException {
        String value = "";
        Clob clob = rs.getClob(columnName);
        if(clob != null) {
            int size = (int)clob.length();
            value = clob.getSubString(1L, size);
        }

        return value;
    }

    @Override
    public Object getNullableResult(ResultSet rs, int columnIndex) throws SQLException {
        String value = "";
        Clob clob = rs.getClob(columnIndex);
        if(clob != null) {
            int size = (int)clob.length();
            value = clob.getSubString(1L, size);
        }

        return value;
    }

    @Override
    public Object getNullableResult(CallableStatement cs, int columnIndex) throws SQLException {
        String value = "";
        Clob clob = cs.getClob(columnIndex);
        if(clob != null) {
            int size = (int)clob.length();
            value = clob.getSubString(1L, size);
        }

        return value;
    }

}

MyObjectBlobTypeHandle

package com.yule.querydb.typehandler;

import org.apache.ibatis.type.BaseTypeHandler;
import org.apache.ibatis.type.JdbcType;
import org.apache.ibatis.type.MappedJdbcTypes;
import org.apache.ibatis.type.MappedTypes;

import java.io.StringReader;
import java.sql.*;

/**
 * 自定义处理 JdbcType.Blob 和 java Object（String）
 * 处理转 json 报错，将 oracle.sql.Blob 类型转为 String 类型
 * copy org.apache.ibatis.type.BlobTypeHandler 类的处理
 * @author yule
 * @date 2018/10/9 17:57
 */
@MappedTypes({Object.class})
@MappedJdbcTypes(value = {JdbcType.BLOB})
public class MyObjectBlobTypeHandle extends BaseTypeHandler<Object> {

    @Override
    public void setNonNullParameter(PreparedStatement ps, int i, Object parameter, JdbcType jdbcType) throws SQLException {
        byte[] parameterByteArray = (byte[]) parameter;
        String parameterStr = new String(parameterByteArray);
        StringReader reader = new StringReader(parameterStr);
        ps.setCharacterStream(i, reader, parameterStr.length());
    }

    @Override
    public Object getNullableResult(ResultSet rs, String columnName) throws SQLException {
        Blob blob = rs.getBlob(columnName);
        byte[] returnValue = null;
        if(null != blob) {
            returnValue = blob.getBytes(1L, (int)blob.length());
        }

        return returnValue == null ? "" : new String(returnValue);
    }

    @Override
    public Object getNullableResult(ResultSet rs, int columnIndex) throws SQLException {
        Blob blob = rs.getBlob(columnIndex);
        byte[] returnValue = null;
        if(null != blob) {
            returnValue = blob.getBytes(1L, (int)blob.length());
        }

        return returnValue == null ? "" : new String(returnValue);
    }

    @Override
    public Object getNullableResult(CallableStatement cs, int columnIndex) throws SQLException {
        Blob blob = cs.getBlob(columnIndex);
        byte[] returnValue = null;
        if(null != blob) {
            returnValue = blob.getBytes(1L, (int)blob.length());
        }

        return returnValue == null ? "" : new String(returnValue);
    }
}

MyObjectLongTypeHandle

package com.yule.querydb.typehandler;

import org.apache.ibatis.type.BaseTypeHandler;
import org.apache.ibatis.type.JdbcType;
import org.apache.ibatis.type.MappedJdbcTypes;
import org.apache.ibatis.type.MappedTypes;

import java.io.StringReader;
import java.sql.*;

/**
 * 自定义处理 JdbcType.LONGVARCHAR 和 java Object（String）
 * 处理转 mybatis 执行返回map的sql 报错，将 oracle Long 型转为 String 类型
 * @author yule
 * @date 2018/10/9 19:18
 */
@MappedTypes({Object.class, String.class})
@MappedJdbcTypes(value = {JdbcType.LONGVARCHAR})
public class MyObjectLongTypeHandle extends BaseTypeHandler<Object> {
    @Override
    public void setNonNullParameter(PreparedStatement ps, int i, Object parameter, JdbcType jdbcType) throws SQLException {
        String parameterStr = (String) parameter;
        StringReader reader = new StringReader(parameterStr);
        ps.setCharacterStream(i, reader, parameterStr.length());
    }

    @Override
    public Object getNullableResult(ResultSet rs, String columnName) throws SQLException {
        String str = rs.getString(columnName);
        return str != null ? str : "";
    }

    @Override
    public Object getNullableResult(ResultSet rs, int columnIndex) throws SQLException {
        String str = rs.getString(columnIndex);
        return str != null ? str : "";
    }

    @Override
    public Object getNullableResult(CallableStatement cs, int columnIndex) throws SQLException {
        String str = cs.getString(columnIndex);
        return str != null ? str : "";
    }
}

解决：oracle+myBatis ResultMap 类型为 map 时，表字段类型有 Long/Blob/Clob 时报错

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