废话少说,直接上菜， 此爲mysql的批量添加
UserMapper.java
public void insertBulk(@Param("sysUsers") List list);
UserMapper.xml
INSERT INTO sys_user (user_name, user_password, user_email, user_info, create_time)
VALUES
(
#{item.userName,jdbcType=VARCHAR},
#{item.userPassword,jdbcType=VARCHAR},
#{item.userEmail,jdbcType=VARCHAR},
#{item.userInfo,jdbcType=VARCHAR},
#{item.createTime,jdbcType=TIMESTAMP}
)
UserMapperTest.java
@Test
public void testInsertBulk(){
SqlSession sqlSession = getSqlSession();
try {
UserMapper userMapper = sqlSession.getMapper(UserMapper.class);
List sysUsers=new ArrayList();
for (int i=0;i<10;i++) {
SysUser sysUser = new SysUser();
sysUser.setUserName(UUID.randomUUID().toString());
sysUser.setUserPassword(UUID.randomUUID().toString());
sysUser.setUserEmail( UUID.randomUUID()+"@163.com");
sysUser.setUserInfo(UUID.randomUUID().toString());
sysUser.setCreateTime(new Date());
sysUsers.add(sysUser);
}
userMapper.insertBulk(sysUsers);
} finally {
sqlSession.commit();
sqlSession.close();
}
}
執行發現
[DEBUG] 2018-11-07 21:31:18,920 method:org.apache.ibatis.logging.jdbc.BaseJdbcLogger.debug(BaseJdbcLogger.java:159)
==> Preparing: INSERT INTO sys_user (user_name, user_password, user_email, user_info, create_time) VALUES ( ?, ?, ?, ?, ? ) , ( ?, ?, ?, ?, ? ) , ( ?, ?, ?, ?, ? ) , ( ?, ?, ?, ?, ? ) , ( ?, ?, ?, ?, ? ) , ( ?, ?, ?, ?, ? ) , ( ?, ?, ?, ?, ? ) , ( ?, ?, ?, ?, ? ) , ( ?, ?, ?, ?, ? ) , ( ?, ?, ?, ?, ? )
[DEBUG] 2018-11-07 21:31:18,954 method:org.apache.ibatis.logging.jdbc.BaseJdbcLogger.debug(BaseJdbcLogger.java:159)
==> Parameters: 9afa2569-350b-4eb2-a444-42bb08c9b290(String), 5df15ff4-9337-4446-919c-3b9902c0d8a9(String), [email protected](String), e4bd2427-f1b0-4a96-8f15-9fbc6ab834ff(String), 2018-11-07 21:31:18.704(Timestamp), 4bfef836-2f05-4690-8f26-fd9703ea29c8(String), 20d006f2-36ed-4801-80a9-33b78ae63458(String), [email protected](String), c7dc9543-006d-4dc9-9694-8330af12feac(String), 2018-11-07 21:31:18.704(Timestamp), e81d67e9-e5e6-4802-b553-b4ab2139cabd(String), 927d24a5-0356-4b35-be96-5b1e32379697(String), [email protected](String), 50e5fb07-6cf9-45bd-8836-e8ed046db674(String), 2018-11-07 21:31:18.704(Timestamp), dc7640b1-970a-4bd6-ad1d-fa8860eb8ee3(String), 64ad6a23-ff2c-4d62-9015-1c77a8a5f7e4(String), [email protected](String), 5793e5e4-61c8-4548-88b6-dd9a1e0e09b0(String), 2018-11-07 21:31:18.704(Timestamp), ec16d4a5-c5f9-4a7e-8b8e-4b68ac6a43f2(String), e8652b0f-51eb-49b8-8566-33c7c42e903c(String), [email protected](String), c0fb4aa5-6412-4c40-bd86-1315ad581bbe(String), 2018-11-07 21:31:18.704(Timestamp), 42ce7b6e-6f95-4a63-b274-80e3398c46c2(String), 218c4d19-207b-4eed-bc86-84d07ad0f87c(String), [email protected](String), c59807f0-63b1-4522-a25f-1dcd27064114(String), 2018-11-07 21:31:18.704(Timestamp), 28eb4cd6-2b6e-4f7a-b42e-28486eff9e70(String), df6e83ab-312d-4956-9275-17e6e075cb09(String), [email protected](String), 077c4474-f6e1-4f79-ae19-d864cfcbefad(String), 2018-11-07 21:31:18.704(Timestamp), 227bf52e-db7f-463d-a8b8-086332b2b6a6(String), 9cd73c49-52b9-444e-92ef-be784c067a2d(String), [email protected](String), 68d9db65-e7b1-41ac-ac95-4dcb0fd55848(String), 2018-11-07 21:31:18.704(Timestamp), 1948e74b-20b8-40e0-826e-e8df7e777bd9(String), aeae58a4-951d-4517-bca7-d13f3fede77c(String), [email protected](String), 1df6b26c-d2d1-4eb8-9312-c9514228a82c(String), 2018-11-07 21:31:18.704(Timestamp), 100883b3-f5fd-47f2-8695-6bf6c5e312f6(String), 9892f00e-55ae-4a3c-b025-a306ad92b2ec(String), [email protected](String), 652b41d9-b5e6-4255-a34c-13301534d495(String), 2018-11-07 21:31:18.704(Timestamp)
[DEBUG] 2018-11-07 21:31:19,019 method:org.apache.ibatis.logging.jdbc.BaseJdbcLogger.debug(BaseJdbcLogger.java:159)
<== Updates: 10
成功， 看console中的message應該已經知道sql語句是怎麽寫的了， 重點說下xml中的寫法
图片.png
foreach： 循環
collection： 集合， 這裏我們用@Param("sysUsers")指定為sysUsers， 如果沒有指定默認為list ， 這個是一個關鍵點， 需要特別注意， 另外如果集合爲空將會報錯，所以在傳參數的時候一定要確保有有值, 如果没有你懂怎么处理的..
item: 項
index：項索引
separator： 執行完用什麽結尾， 如果是最後結尾會自動去除
####################################################################
批量返回自增主键
前面章节已经有提过,返回自增主键两种方式,我这里的话采用的是在insert标签中增加useGeneratedKeys="true" keyProperty="id"
INSERT INTO sys_user (user_name, user_password, user_email, user_info,
create_time)
VALUES
(
#{item.userName,jdbcType=VARCHAR},
#{item.userPassword,jdbcType=VARCHAR},
#{item.userEmail,jdbcType=VARCHAR},
#{item.userInfo,jdbcType=VARCHAR},
#{item.createTime,jdbcType=TIMESTAMP}
)
@Test
public void testInsertBulk() {
SqlSession sqlSession = getSqlSession();
try {
List sysUsers = new ArrayList();
for (int i = 0; i < 10; i++) {
SysUser sysUser = new SysUser();
sysUser.setUserName(UUID.randomUUID().toString());
sysUser.setUserPassword(UUID.randomUUID().toString());
sysUser.setUserEmail(UUID.randomUUID() + "@163.com");
sysUser.setUserInfo(UUID.randomUUID().toString());
sysUser.setCreateTime(new Date());
sysUsers.add(sysUser);
}
UserMapper userMapper = sqlSession.getMapper(UserMapper.class);
int reulst= userMapper.insertBulk(sysUsers);
System.out.println(reulst);
System.out.println(sysUsers);
} finally {
sqlSession.commit();
sqlSession.close();
}
}
我将上面的insertBulk接口稍微改动了下, 将返回值改成了int, 运行发现返回的reulst是10 , 证明我们传入list的10条数据都已经存入成功了, 然后我们在吧sysUsers打印出来(记住是传入的参数), 我们会发现id已经有值了, 另外需要特别注意, 我这里测试的时候发现, 如果将方法参数用@Param("sysUsers")指定就没有办法返回主键, 必须要用默认的list才行
image.png
批量更新
update _audit
bank_code = #{item.bankCode},
bank_name = #{item.bankName},
user_name = #{item.userName},
create_time = #{item.createTime},
update_time = #{item.updateTime},
agent_name = #{item.agentName},
payout_status = #{item.payoutStatus},
where 1=1
and
id=#{item.Id}
批量查询