TransactionTemplate用法测试
TransactionTemplate 编程式事务，相比于注解事务，能够更细粒度的控制事务
- execute里如果不加try catch ,异常后可以回滚，但是会向外抛出异常,不会走后续代码
public void testTransaction() {
Article article = new Article();
article.setTitle("正经‘’‘’。。。");
article.setImageInput("20220112/ddd.jpg");
article.setContent("张三你 洒洒水啊撒");
Category category = new Category();
category.setName("我的测试");
boolean flag = transactionTemplate.execute(status -> {
categoryMapper.insertSelective(category);
int a = 1/0;
article.setCid(category.getId()+"");
articleMapper.insertSelective(article);
return Boolean.TRUE;
});
System.out.println("执行结果返回数据:"+flag);
}
- 加上try catch后，必须在catch中手动加上status.setRollbackOnly()，否则无法回滚数据
boolean flag = transactionTemplate.execute(status -> {
try {
categoryMapper.insertSelective(category);
int a = 1/0;
article.setCid(category.getId()+"");
articleMapper.insertSelective(article);
return Boolean.TRUE;
} catch (Exception e) {
status.setRollbackOnly();
return Boolean.FALSE;
}
});
- 如果execute 内部调用其他serviceA方法，这个serviceA使用@Transactional(rollbackFor = Exception.class)标注的事务
- 如果serviceA异常回滚，全部都回滚
- 如果execute里异常，全部回滚
boolean flag = transactionTemplate.execute(status -> {
try {
categoryMapper.insertSelective(category);
categoryService.insert(category);
int a = 1/0;
article.setCid(category.getId()+"");
articleMapper.insertSelective(article);
return Boolean.TRUE;
} catch (Exception e) {
status.setRollbackOnly();
return Boolean.FALSE;
}
});
