REST服务使用@RestController实例，输出xml/json

REST服务使用@RestController实例，输出xml/json

需要用到的服务注解

org.springframework.web.bind.annotation.RestController

　　

用到的包：java和json互转

jackson-mapper-asl #//java对象和json相互转化
jackson-databind    #spring4.1+以上都必须包含(java对象和json相互转化)

　　

访问地址：

http://localhost:8080/gugua9/hello/aaa.xml

http://localhost:8080/gugua9/hello/aaa.json

pom.xml

 <!-- 版本号 -->
  <properties>
  	<springVersion>4.3.5.RELEASE</springVersion>
  </properties>

  <dependencies>

    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>

     <!-- spring-test支持 -->
    <dependency>
    	<groupId>org.springframework</groupId>
    	<artifactId>spring-test</artifactId>
    	<version>${springVersion}</version>
    </dependency>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>

      <!-- spring模块库 -->
    <dependency>
    	<groupId>org.springframework</groupId>
    	<artifactId>spring-beans</artifactId>
    	<version>${springVersion}</version>
    </dependency>
    <dependency>
    	<groupId>org.springframework</groupId>
    	<artifactId>spring-web</artifactId>
    	<version>${springVersion}</version>
    </dependency>
    <dependency>
    	<groupId>org.springframework</groupId>
    	<artifactId>spring-webmvc</artifactId>
    	<version>${springVersion}</version>
    </dependency> 

    <!-- Servlet dependencies -->
    <!-- servlet(HttpServletRequest,HttpServletResponse) -->
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>javax.servlet-api</artifactId>
			<version>3.1.0</version>
		</dependency>
		 <!-- servlet(HttpServletRequest,HttpServletResponse) -->
		<dependency>
		    <groupId>javax.servlet</groupId>
		    <artifactId>jstl</artifactId>
		    <version>1.2</version>
		</dependency>
		<dependency>
			<groupId>javax.servlet.jsp</groupId>
			<artifactId>javax.servlet.jsp-api</artifactId>
			<version>2.3.1</version>
		</dependency>

		<!-- https://mvnrepository.com/artifact/org.codehaus.jackson/jackson-mapper-asl -->
		<!-- java对象和json相互转化 -->
	<dependency>
	    <groupId>org.codehaus.jackson</groupId>
	    <artifactId>jackson-mapper-asl</artifactId>
	    <version>1.9.13</version>
	</dependency>
	<dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-databind</artifactId>
        <version>2.7.4</version>
    </dependency>

  </dependencies>

  <build>
  	<pluginManagement>
  		<plugins>
  			<plugin>
  				<!-- 需要声明maven-plugin版本，用来管理包，否则会报错 -->
  				<groupId>org.apache.maven.plugins</groupId>
  				<artifactId>maven-war-plugin</artifactId>
  				<version>2.6</version>
  				<configuration>
  					<warSourceDirectory>src/main/webapp</warSourceDirectory>
  					<warName>gugua9</warName>
  					<!-- 屏蔽web.xml  -->
  					<failOnMissingWebXml>false</failOnMissingWebXml>
  				</configuration>
  			</plugin>
  			<!-- define the project compile level -->
  			<plugin>
  				<groupId>org.apache.maven.plugins</groupId>
  				<artifactId>maven-compiler-plugin</artifactId>
  				<configuration>
  					<source>1.8</source>
  					<target>1.8</target>
  				</configuration>
  			</plugin>
  		</plugins>
  	</pluginManagement>
    <finalName>gugua9</finalName>
  </build>

　　

message.java

加入xml注解就支持xml,不加入只支持json

package springmvc.domain;

import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;

//适应XML输出
@XmlRootElement(name="message")
public class Message {

	String name;
	String text;

	public Message(){

	}

	public Message(String name, String text) {
		super();
		this.name = name;
		this.text = text;
	}

	@XmlElement
	public String getName() {
		return name;
	}

	@XmlElement
	public String getText() {
		return text;
	}

}

　　

mvc/config 配置开启

package springmvc.configuration;

import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;

//开启mvc，配置类
@Configuration
@EnableWebMvc
@ComponentScan(basePackages="springmvc")
public class HelloWorldConfiguration {

}

　　

初始化

package springmvc.configuration;

import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;

//初始化
public class HelloWorldInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {

	@Override
	protected Class<?>[] getRootConfigClasses() {
		// TODO Auto-generated method stub
		return new Class[] { HelloWorldConfiguration.class };
	}

	@Override
	protected Class<?>[] getServletConfigClasses() {
		// TODO Auto-generated method stub
		return null;
	}

	@Override
	protected String[] getServletMappings() {
		// TODO Auto-generated method stub
		return new String[]{"/"};
	}

}

　　

控制器：

package springmvc.controller;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;

import springmvc.domain.Message;

@RestController
public class HelloWorldRestController {

	@RequestMapping(value="/hello/{player}")
	public Message message(@PathVariable String player  )
	{
		Message msg = new Message(player, "hello," + player);

		return msg;

	}

}