spring xml model validation
时间: 2023-04-20 10:02:31 浏览: 82
Spring XML模型验证是一种用于验证XML文档的结构和内容是否符合特定模型的技术。它可以帮助开发人员在编写XML文档时检测错误和不一致性,并提供更好的代码可读性和可维护性。Spring框架提供了一些工具和库,可以轻松地实现XML模型验证,例如使用XML Schema或DTD(文档类型定义)等。
相关问题
Druid连接池用xml怎么配置
以下是一个基本的Druid连接池的XML配置文件示例:
```xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">
<!-- 配置Druid数据源 -->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
<property name="url" value="jdbc:mysql://localhost:3306/test"/>
<property name="username" value="root"/>
<property name="password" value="password"/>
<property name="driverClassName" value="com.mysql.jdbc.Driver"/>
<property name="initialSize" value="5"/>
<property name="minIdle" value="5"/>
<property name="maxActive" value="20"/>
<property name="maxWait" value="60000"/>
<property name="timeBetweenEvictionRunsMillis" value="60000"/>
<property name="minEvictableIdleTimeMillis" value="300000"/>
<property name="validationQuery" value="SELECT 1 FROM DUAL"/>
<property name="testWhileIdle" value="true"/>
<property name="testOnBorrow" value="false"/>
<property name="testOnReturn" value="false"/>
<property name="poolPreparedStatements" value="true"/>
<property name="maxPoolPreparedStatementPerConnectionSize" value="20"/>
<property name="filters" value="stat"/>
</bean>
<!-- 配置MyBatis SqlSessionFactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="typeAliasesPackage" value="com.example.model"/>
<property name="mapperLocations" value="classpath:com/example/mapper/*.xml"/>
</bean>
<!-- 配置MyBatis MapperScannerConfigurer -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.example.mapper"/>
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
</bean>
</beans>
```
在上面的配置文件中,我们使用了`com.alibaba.druid.pool.DruidDataSource`来定义Druid数据源,并设置了一些基本的属性,如`url`、`username`、`password`、`driverClassName`等。
然后,我们使用`org.mybatis.spring.SqlSessionFactoryBean`来定义MyBatis的SqlSessionFactory,并将Druid数据源作为它的`dataSource`属性。
最后,我们使用`org.mybatis.spring.mapper.MapperScannerConfigurer`来自动扫描MyBatis的Mapper接口,并将它们注入到Spring容器中。
用java写一个基于spring框架的图书管理系统
好的,下面是一个基于Spring框架的图书管理系统的简单示例:
1. 创建项目并添加依赖
首先,我们需要创建一个Spring项目。在 pom.xml 文件中添加以下依赖:
```
<dependencies>
<!-- Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>5.2.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>5.2.0.RELEASE</version>
</dependency>
<!-- Spring Boot -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<version>2.2.0.RELEASE</version>
</dependency>
<!-- Thymeleaf -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
<version>2.2.0.RELEASE</version>
</dependency>
<!-- H2 Database -->
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<version>1.4.199</version>
</dependency>
<!-- JPA -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
<version>2.2.0.RELEASE</version>
</dependency>
<!-- Validation -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-validation</artifactId>
<version>2.2.0.RELEASE</version>
</dependency>
</dependencies>
```
2. 创建实体类
我们需要创建一个 Book 实体类,可以在 src/main/java/com/example/demo/entity/ 目录下创建 Book.java 文件:
```
package com.example.demo.entity;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
@Entity
public class Book {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
private String title;
private String author;
private String isbn;
private Integer year;
// getters and setters
}
```
3. 创建数据访问对象
我们需要创建一个 BookRepository 接口,可以在 src/main/java/com/example/demo/repository/ 目录下创建 BookRepository.java 文件:
```
package com.example.demo.repository;
import com.example.demo.entity.Book;
import org.springframework.data.jpa.repository.JpaRepository;
public interface BookRepository extends JpaRepository<Book, Long> {
}
```
4. 创建控制器
我们需要创建一个控制器类,可以在 src/main/java/com/example/demo/controller/ 目录下创建 BookController.java 文件:
```
package com.example.demo.controller;
import com.example.demo.entity.Book;
import com.example.demo.repository.BookRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.*;
import javax.validation.Valid;
@Controller
@RequestMapping("/books")
public class BookController {
private BookRepository bookRepository;
@Autowired
public BookController(BookRepository bookRepository) {
this.bookRepository = bookRepository;
}
@GetMapping
public String index(Model model) {
model.addAttribute("books", bookRepository.findAll());
return "books/index";
}
@GetMapping("/new")
public String newBook(Model model) {
model.addAttribute("book", new Book());
return "books/new";
}
@PostMapping
public String create(@ModelAttribute("book") @Valid Book book, BindingResult result) {
if (result.hasErrors()) {
return "books/new";
}
bookRepository.save(book);
return "redirect:/books";
}
@GetMapping("/{id}/edit")
public String edit(@PathVariable("id") Long id, Model model) {
Book book = bookRepository.findById(id)
.orElseThrow(() -> new IllegalArgumentException("Invalid book id: " + id));
model.addAttribute("book", book);
return "books/edit";
}
@PutMapping("/{id}")
public String update(@PathVariable("id") Long id, @ModelAttribute("book") @Valid Book book, BindingResult result) {
if (result.hasErrors()) {
book.setId(id);
return "books/edit";
}
bookRepository.save(book);
return "redirect:/books";
}
@DeleteMapping("/{id}")
public String destroy(@PathVariable("id") Long id) {
Book book = bookRepository.findById(id)
.orElseThrow(() -> new IllegalArgumentException("Invalid book id: " + id));
bookRepository.delete(book);
return "redirect:/books";
}
}
```
5. 创建视图
我们需要创建以下视图文件:
- src/main/resources/templates/books/index.html
- src/main/resources/templates/books/new.html
- src/main/resources/templates/books/edit.html
index.html:
```
<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<title>Book List</title>
</head>
<body>
<h1>Book List</h1>
<p><a href="/books/new">Add Book</a></p>
<table>
<thead>
<tr>
<th>Title</th>
<th>Author</th>
<th>ISBN</th>
<th>Year</th>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr th:each="book : ${books}">
<td th:text="${book.title}"></td>
<td th:text="${book.author}"></td>
<td th:text="${book.isbn}"></td>
<td th:text="${book.year}"></td>
<td><a th:href="@{/books/{id}/edit(id=${book.id})}">Edit</a></td>
<td>
<form th:action="@{/books/{id}(id=${book.id})}" method="post">
<input type="hidden" name="_method" value="delete"/>
<button type="submit">Delete</button>
</form>
</td>
</tr>
</tbody>
</table>
</body>
</html>
```
new.html:
```
<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<title>Add Book</title>
</head>
<body>
<h1>Add Book</h1>
<form th:action="@{/books}" method="post" th:object="${book}">
<div>
<label for="title">Title:</label>
<input type="text" id="title" name="title" th:field="*{title}"/>
<span th:if="${#fields.hasErrors('title')}" th:errors="*{title}"></span>
</div>
<div>
<label for="author">Author:</label>
<input type="text" id="author" name="author" th:field="*{author}"/>
<span th:if="${#fields.hasErrors('author')}" th:errors="*{author}"></span>
</div>
<div>
<label for="isbn">ISBN:</label>
<input type="text" id="isbn" name="isbn" th:field="*{isbn}"/>
<span th:if="${#fields.hasErrors('isbn')}" th:errors="*{isbn}"></span>
</div>
<div>
<label for="year">Year:</label>
<input type="number" id="year" name="year" th:field="*{year}"/>
<span th:if="${#fields.hasErrors('year')}" th:errors="*{year}"></span>
</div>
<div>
<button type="submit">Save</button>
</div>
</form>
</body>
</html>
```
edit.html:
```
<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<title>Edit Book</title>
</head>
<body>
<h1>Edit Book</h1>
<form th:action="@{/books/{id}(id=${book.id})}" method="post" th:object="${book}">
<input type="hidden" name="_method" value="put"/>
<div>
<label for="title">Title:</label>
<input type="text" id="title" name="title" th:field="*{title}"/>
<span th:if="${#fields.hasErrors('title')}" th:errors="*{title}"></span>
</div>
<div>
<label for="author">Author:</label>
<input type="text" id="author" name="author" th:field="*{author}"/>
<span th:if="${#fields.hasErrors('author')}" th:errors="*{author}"></span>
</div>
<div>
<label for="isbn">ISBN:</label>
<input type="text" id="isbn" name="isbn" th:field="*{isbn}"/>
<span th:if="${#fields.hasErrors('isbn')}" th:errors="*{isbn}"></span>
</div>
<div>
<label for="year">Year:</label>
<input type="number" id="year" name="year" th:field="*{year}"/>
<span th:if="${#fields.hasErrors('year')}" th:errors="*{year}"></span>
</div>
<div>
<button type="submit">Save</button>
</div>
</form>
</body>
</html>
```
6. 配置应用程序
最后,我们需要在 src/main/resources/application.properties 文件中添加以下配置:
```
spring.datasource.url=jdbc:h2:mem:testdb
spring.jpa.hibernate.ddl-auto=update
```
这将使用 H2 数据库作为我们的数据源,并在启动时自动创建表格。
7. 运行应用程序
现在,我们可以使用以下命令运行应用程序:
```
mvn spring-boot:run
```
然后,我们可以在浏览器中访问 http://localhost:8080/books 来查看图书列表,以及 http://localhost:8080/books/new 来添加新图书。
这只是一个简单的示例,实际上,图书管理系统可能需要更多的功能和功能,但是这个示例应该能够帮助你入门。