1、直接在service写两个插入语句,让第二个异常,也不做任何try catch, 此时能回滚,控制器做异常处理
public int insertSelective(Category categoryInfo) {
categoryInfo.setCategoryCtime(new Date());
categoryInfo.setCategoryUtime(new Date());
int a = categoryMapper.insertSelective(categoryInfo);
int b = categoryMapper.insertSelective(null);
return 0;
}
/**
* 添加、修改分类
* @param modelMap
* @return
*/
@RequestMapping(value = "/categorysave",method=RequestMethod.POST)
public String categorysave(ModelMap modelMap,Category form){
try {
if (form.getCategoryId() != null) {
categoryService.updateByPrimaryKeySelective(form);
}else{
categoryService.insertSelective(form);
}
} catch (Exception e) {
// TODO: handle exception
System.out.println("类型控制器异常:"+e.getMessage());
}
return "redirect:categoryInfo.do";
}
2、在service方法中处理异常public int insertSelective(Category categoryInfo) {
try {
categoryInfo.setCategoryCtime(new Date());
categoryInfo.setCategoryUtime(new Date());
int a = categoryMapper.insertSelective(categoryInfo);
int b = categoryMapper.insertSelective(null);
} catch (Exception e) {
// TODO: handle exception
System.out.println("service异常:"+e.getMessage());
//throw new RuntimeException();
TransactionAspectSupport.currentTransactionStatus().setRollbackOnly();
}
return 0;
}
* 添加、修改分类
* @param modelMap
* @return
*/
@RequestMapping(value = "/categorysave",method=RequestMethod.POST)
public String categorysave(ModelMap modelMap,Category form){
if (form.getCategoryId() != null) {
categoryService.updateByPrimaryKeySelective(form);
}else{
categoryService.insertSelective(form);
}
return "redirect:categoryInfo.do";
}
默认spring事务只在发生未被捕获的 runtimeexcetpion时才回滚。
spring aop 异常捕获原理:被拦截的方法需显式抛出异常,并不能经任何处理,这样aop代理才能捕获到方法的异常,才能进行回滚,默认情况下aop只捕获runtimeexception的异常,但可以通过配置来捕获特定的异常并回滚
换句话说在service的方法中不使用try catch 或者在catch中最后加上throw new runtimeexcetpion(),这样程序异常时才能被aop捕获进而回滚
解决方案:
方案1.例如service层处理事务,那么service中的方法中不做异常捕获,或者在catch语句中最后增加throw new RuntimeException()语句,以便让aop捕获异常再去回滚,并且在service上层(webservice客户端,view层action)要继续捕获这个异常并处理
方案2.在service层方法的catch语句中增加:TransactionAspectSupport.currentTransactionStatus().setRollbackOnly();语句,手动回滚,这样上层就无需去处理异常