ExampleMatcher
时间: 2023-06-09 11:03:25 浏览: 167
是什么?
ExampleMatcher是Spring Data JPA中的一个类,用于定义如何匹配查询条件。它可以指定如何匹配属性值、大小写敏感性等等。使用ExampleMatcher可以更方便地进行复杂的查询操作。
相关问题
examplematcher模糊查询
引用中的示范代码展示了如何使用ExampleMatcher进行模糊查询。在示范代码中,对姓名字段进行了前后模糊查询,而对学号字段进行了精确查询。
引用提到,在使用ExampleMatcher时,可以根据需要对不同字段使用不同的查询方式。比如,可以对姓名字段实现前后模糊查询,而对学号字段实现精确查询。
根据以上引用内容,可以使用ExampleMatcher来实现模糊查询,具体步骤如下:
1. 创建一个ExampleMatcher对象,并使用matching()方法进行初始化。
2. 使用withMatcher()方法来指定字段的查询方式。例如,对于姓名字段,可以使用contains()方法来实现前后模糊查询。
3. 将ExampleMatcher对象与实体对象一起传入Example.of()方法中,创建一个Example对象。
4. 使用Example对象进行查询操作,可以通过调用相应的查询方法来实现模糊查询。
请根据具体的需求和示范代码中的实现方式,适当修改代码以实现模糊查询。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* *2* [ExampleMatcher 针对不同字段实现不同方式查询](https://blog.csdn.net/weixin_43481812/article/details/115615691)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v92^chatsearchT0_1"}}] [.reference_item style="max-width: 50%"]
- *3* [jpa基于ExampleMatcher,Example实现动态筛选,模糊查询,分页,排序,时间范围筛选](https://blog.csdn.net/Years_of_sorrow/article/details/124444759)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v92^chatsearchT0_1"}}] [.reference_item style="max-width: 50%"]
[ .reference_list ]
router.matcher
`router.matcher` is a method in Vue Router that returns a function used to match a given location against the routes defined in the router. It takes a single parameter, which is the location object to be matched.
The returned function has the following signature:
```javascript
function (location: Location, currentRoute?: Route, redirectedFrom?: Location): Route | undefined
```
The `location` parameter is the location object to be matched. The `currentRoute` parameter is an optional current route object, which can be used to help with nested routes. The `redirectedFrom` parameter is an optional location object that represents the original location before any redirects were applied.
The function returns a `Route` object if there is a match, or `undefined` if there is no match.
Here is an example of how to use `router.matcher`:
```javascript
import { createRouter, createWebHistory } from 'vue-router'
const router = createRouter({
history: createWebHistory(),
routes: [
{ path: '/', component: Home },
{ path: '/about', component: About },
{ path: '/contact', component: Contact }
]
})
const location = { path: '/about' }
const matchedRoute = router.matcher(location)
console.log(matchedRoute) // Route { path: '/about', component: About }
```
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