第 7 章 RestTemplate - Spring4 Restful-白红宇

首先我要禁告各位，Spring发展过程中，每个版本都有一定差异。如果你做实验失败后在网上搜索答案，切记看一下版本号还有文章帖子的发布时间。否则你可能按照Spring3配置方法去Spring4。

@RestController 默认返回 @ResponseBody，所以@ResponseBody可加可不加

7.1. RestTemplate Example

7.1.1. pom.xml

Maven 增加 jackson 开发包


      			
       
        com.fasterxml.jackson.dataformat
       			
       
        jackson-dataformat-xml
       		
      		
      			
       
        com.fasterxml.jackson.core
       			
       
        jackson-core
       		
      		
      			
       
        com.fasterxml.jackson.core
       			
       
        jackson-databind
       		
      		
      			
       
        com.fasterxml.jackson.core
       			
       
        jackson-annotations

7.1.2. web.xml

url-pattern匹配中增加*.xml跟*.json


              
       
        springframework
               
       
                    org.springframework.web.servlet.DispatcherServlet        
               
       
        1
           
             
              
       
        springframework
               
       
        /welcome.jsp
               
       
        /welcome.html
               
       
        *.json
               
       
        *.xml
               
       
        *.html

7.1.3. springframework.xml

7.1.4. RestController

package cn.netkiller.controller;import org.springframework.web.bind.annotation.PathVariable;import org.springframework.web.bind.annotation.RequestHeader;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import org.springframework.web.bind.annotation.ResponseStatus;import org.springframework.web.bind.annotation.RestController;import org.springframework.http.HttpStatus;import org.springframework.http.ResponseEntity;import org.springframework.web.bind.annotation.ResponseBody;import cn.netkiller.pojo.Message;@RestController@RequestMapping("/rest")public class TestRestController {	public TrackerRestController() {		// TODO Auto-generated constructor stub	}	@RequestMapping("welcome")	@ResponseStatus(HttpStatus.OK)	public String welcome() {		return "Welcome to RestTemplate Example.";	}	@RequestMapping(value = "test", method = RequestMethod.GET, produces = { "application/xml", "application/json" })	@ResponseStatus(HttpStatus.OK)	public @ResponseBody Message test(@RequestHeader(value = "accept") String accept) {		Message message = new Message();		message.setTitle("test");		message.setText("Helloworld!!!");		System.out.println("accept: " + accept);		System.out.println(message.toString());		return message;	}	@RequestMapping("message/{name}")	public ResponseEntity
      
        message(@PathVariable String name) {		Message msg = new Message();		msg.setTitle(name);		return new ResponseEntity
       
        (msg, HttpStatus.OK);	}		@RequestMapping(value = "create", method = RequestMethod.POST, produces = { "application/xml", "application/json" })	public ResponseEntity
        
          create(@RequestBody Tracker tracker) {		this.mongoTemplate.insert(tracker);		return new ResponseEntity
         
          (tracker, HttpStatus.OK);	}		@RequestMapping(value = "read", method = RequestMethod.GET, produces = { "application/xml", "application/json" })	@ResponseStatus(HttpStatus.OK)	public ArrayList
          
            read() {		ArrayList
           
             trackers = (ArrayList
            
             ) mongoTemplate.findAll(Tracker.class); return trackers; } }

7.1.5. POJO

package cn.netkiller.pojo;import javax.xml.bind.annotation.XmlAttribute;import javax.xml.bind.annotation.XmlElement;import javax.xml.bind.annotation.XmlRootElement;@XmlRootElementpublic class Message {		String title;    String text;    	public Message() {		// TODO Auto-generated constructor stub	}		//@XmlElement	@XmlAttribute  	public String getTitle() {		return title;	}	public void setTitle(String title) {		this.title = title;	}		//@XmlElement	@XmlAttribute	public String getText() {		return text;	}	public void setText(String text) {		this.text = text;	}	@Override	public String toString() {		return "Message [title=" + title + ", text=" + text + "]";	}}

7.1.6. 测试

neo@netkiller:~/www.netkiller.cn$ curl http://172.16.0.1:8080/spring4/rest/welcome.htmlWelcome to RestTemplate Example.neo@netkiller:~/www.netkiller.cn$ curl http://172.16.0.1:8080/spring4/rest/test.json{"title":"test","text":"Helloworld!!!"}neo@netkiller:~/www.netkiller.cn$ curl http://172.16.0.1:8080/spring4/rest/test.xml
      
       test
       
        Helloworld!!!
       
      	neo@netkiller:~/www.netkiller.cn$ curl -i -H "Accept: application/json" -H "Content-Type: application/json" -X POST -d '{"login":"neo", "unique":"356770257607079474","hostname":"www.example.com","referrer":"http://www.netkiller.cn","href":"http://www.netkiller.cn"}' http://172.16.0.1:8080/spring4/rest/create.jsonHTTP/1.1 200 OKServer: Apache-Coyote/1.1Content-Type: application/jsonTransfer-Encoding: chunkedDate: Tue, 21 Jun 2016 03:08:26 GMT{"name":"neo","unique":"356770257607079474","hostname":"www.netkiller.cn","referrer":"http://www.netkiller.cn","href":"http://www.netkiller.cn"}

原文出处：Netkiller 系列手札

本文作者：陈景峯

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