springboot能读取xml吗? 如何读取
时间: 2023-07-20 10:38:09 浏览: 82
是的,Spring Boot可以读取XML文件。Spring Boot内置了Jackson XML扩展库,可以实现XML和Java对象之间的转换。
在Spring Boot中,你可以使用`@EnableWebMvc`注解来开启XML消息转换。具体实现步骤如下:
1.在pom.xml文件中添加以下依赖:
```xml
<dependency>
<groupId>com.fasterxml.jackson.dataformat</groupId>
<artifactId>jackson-dataformat-xml</artifactId>
</dependency>
```
2.创建一个XML配置文件,例如`application.xml`:
```xml
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<property name="name" value="Spring Boot" />
<property name="version" value="2.5.0" />
</configuration>
```
3.创建一个Java类来表示XML文件中的配置项:
```java
import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlProperty;
import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlRootElement;
@JacksonXmlRootElement(localName = "configuration")
public class Configuration {
@JacksonXmlProperty(localName = "name")
private String name;
@JacksonXmlProperty(localName = "version")
private String version;
// getters and setters
}
```
4.在Spring Boot应用程序的主类中添加以下代码:
```java
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;
import org.springframework.http.converter.xml.MappingJackson2XmlHttpMessageConverter;
@SpringBootApplication
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
@Bean
public MappingJackson2XmlHttpMessageConverter mappingJackson2XmlHttpMessageConverter() {
return new MappingJackson2XmlHttpMessageConverter();
}
}
```
5.现在你可以使用以下代码来读取XML文件并将其转换为Java对象:
```java
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.ApplicationArguments;
import org.springframework.boot.ApplicationRunner;
import org.springframework.stereotype.Component;
@Component
public class ConfigurationReader implements ApplicationRunner {
@Autowired
private MappingJackson2XmlHttpMessageConverter converter;
@Override
public void run(ApplicationArguments args) throws Exception {
String xml = "<configuration><name>Spring Boot</name><version>2.5.0</version></configuration>";
Configuration configuration = (Configuration) converter.getObjectMapper().readValue(xml, Configuration.class);
System.out.println(configuration.getName()); // 输出:Spring Boot
System.out.println(configuration.getVersion()); // 输出:2.5.0
}
}
```
以上就是在Spring Boot中读取XML文件的方法。