Spring MVC Controller 实现返回XML格式的数据
一、场景对于Spring框架项目中,有些情况我们需要返回xml格式数据。这里使用JAXB来实现,而JAXB且已经包含在JDK1.6中了。二、环境Spring 4.0.5.RELEASEJDK 1.7EclipseMaventomcat7三、创建项目(1)创建maven的Web项目(2)pom.xml文件依赖<project xmlns="htt...
一、场景
对于Spring框架项目中,有些情况我们需要返回xml格式数据。这里使用JAXB来实现,而JAXB且已经包含在JDK1.6中了。
二、环境
- Spring 4.0.5.RELEASE
- JDK 1.7
- Eclipse
- Maven
- tomcat7
三、创建项目
(1)创建maven的Web项目
(2)pom.xml文件依赖
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>spring.mvc.xml</groupId>
<artifactId>spring-mvc-xml</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>spring-mvc-xml Maven Webapp</name>
<url>http://maven.apache.org</url>
<properties>
<spring.version>4.0.5.RELEASE</spring.version>
</properties>
<dependencies>
<!-- Spring 4 dependencies -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
</dependencies>
<build>
<finalName>spring-mvc-xml</finalName>
</build>
</project>
(3)web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
version="3.0"
metadata-complete="true">
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-context.xml</param-value>
</context-param>
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- spring请求配置,指向springmvc的核心配置文件,定义所有以.do结尾的请求都被springmvc拦截 -->
<servlet>
<servlet-name>springMVC</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-context-mvc.xml</param-value>
</init-param>
<!--加载顺序为1 -->
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springMVC</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
</web-app>
(4)spring-context.xml配置
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
</beans>
(5)spring-context-mvc.xml配置
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
<mvc:annotation-driven />
<!-- 自动扫描controller包下的所有类,如果@Controller注入为bean -->
<context:component-scan base-package="com.controller" />
</beans>
(6)controller
package com.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import com.bean.User;
@Controller
public class UserController {
@ResponseBody
@RequestMapping("/xml")
public User demo() {
User user = new User();
user.setName("name");
user.setPassword("password");
return user;
}
}
(7)实体类
package com.bean;
import javax.xml.bind.annotation.XmlRootElement;
@XmlRootElement
public class User {
private String name;
private String password;
public User() {
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
四、测试
(1)启动项目
(2)浏览器访问
五、JAXB Annotation说明
@XmlType,将Java类或枚举类型映射到XML模式类型
@XmlAccessorType(XmlAccessType.FIELD) ,控制字段或属性的序列化。FIELD表示JAXB将自动绑定Java类中的每个非静态的(static)、非瞬态的(由@XmlTransient标注)字段到XML。其他值还有XmlAccessType.PROPERTY和XmlAccessType.NONE。
@XmlAccessorOrder,控制JAXB 绑定类中属性和字段的排序。
@XmlJavaTypeAdapter,使用定制的适配器(即扩展抽象类XmlAdapter并覆盖marshal()和unmarshal()方法),以序列化Java类为XML。
@XmlElementWrapper ,对于数组或集合(即包含多个元素的成员变量),生成一个包装该数组或集合的XML元素(称为包装器)。
@XmlRootElement,将Java类或枚举类型映射到XML元素。
@XmlElement,将Java类的一个属性映射到与属性同名的一个XML元素。
@XmlAttribute,将Java类的一个属性映射到与属性同名的一个XML属性。
六、Demo下载
demo地址 : https://github.com/2014team/spring-xml-demo.git
参考 文章:https://blog.csdn.net/Pnoter/article/details/52218363
七、其他方式
引入jar
<!-- https://mvnrepository.com/artifact/com.thoughtworks.xstream/xstream -->
<dependency>
<groupId>com.thoughtworks.xstream</groupId>
<artifactId>xstream</artifactId>
<version>1.4.8</version>
</dependency>
@RequestMapping(value="/jar/xml.do", produces={"application/xml; charset=UTF-8"})
@ResponseBody
public String JarXml() {
User2 user = new User2();
user.setName("name");
user.setPassword("password");
XStream xStream = new XStream();
xStream.alias("user", User2.class);
String xml = xStream.toXML(user);
return xml;
}
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