mybatis调用Oracle存储过程返回多个游标
时间: 2023-06-19 10:08:53
浏览: 191
Mybatis调用Oracle存储过程返回多个游标的步骤如下:
1. 定义存储过程
在Oracle数据库中定义存储过程,该存储过程需要返回多个游标,例如:
CREATE OR REPLACE PROCEDURE get_multi_cursor(
p_id IN NUMBER,
p_cursor1 OUT SYS_REFCURSOR,
p_cursor2 OUT SYS_REFCURSOR
BEGIN
OPEN p_cursor1 FOR SELECT * FROM table1 WHERE id = p_id;
OPEN p_cursor2 FOR SELECT * FROM table2 WHERE id = p_id;
2. 创建Java类
创建一个Java类,用于封装存储过程的参数和返回结果,例如:
```java
public class MultiCursorResult {
private List<Table1> table1List;
private List<Table2> table2List;
// getter and setter
3. 定义Mapper接口
在Mybatis的Mapper接口中定义调用存储过程的方法,例如:
```java
public interface MultiCursorMapper {
void getMultiCursor(
@Param("id") Integer id,
@Param("cursor1") ResultSet[] cursor1,
@Param("cursor2") ResultSet[] cursor2
4. 编写Mapper XML
在Mapper XML中编写调用存储过程的SQL语句,例如:
```xml
<select id="getMultiCursor" statementType="CALLABLE">
{call get_multi_cursor(#{id},#{cursor1,mode=OUT,jdbcType=CURSOR,javaType=ResultSet},#{cursor2,mode=OUT,jdbcType=CURSOR,javaType=ResultSet})}
</select>
5. 调用Mapper方法
在Java程序中调用Mapper方法,例如:
```java
MultiCursorMapper mapper = sqlSession.getMapper(MultiCursorMapper.class);
ResultSet[] cursor1 = new ResultSet[1];
ResultSet[] cursor2 = new ResultSet[1];
mapper.getMultiCursor(1, cursor1, cursor2);
List<Table1> table1List = new ArrayList<>();
while (cursor1[0].next()) {
Table1 table1 = new Table1();
table1.setId(cursor1[0].getInt("id"));
table1.setName(cursor1[0].getString("name"));
table1List.add(table1);
List<Table2> table2List = new ArrayList<>();
while (cursor2[0].next()) {
Table2 table2 = new Table2();
table2.setId(cursor2[0].getInt("id"));
table2.setName(cursor2[0].getString("name"));
table2List.add(table2);
MultiCursorResult result = new MultiCursorResult();
result.setTable1List(table1List);
result.setTable2List(table2List);
```