spring_mvc（四）Message Converters

Read a String Read string 'foo'

@RequestMapping(value="/string", method=RequestMethod.POST)
public @ResponseBody String readString(@RequestBody String string) {
	return "Read string '" + string + "'";
}

Write a String Wrote a string

@RequestMapping(value="/string", method=RequestMethod.GET)
public @ResponseBody String writeString() {
	return "Wrote a string";
}

Read a Form Read form map{foo=[bar], fruit=[apple]}

@RequestMapping(value="/form", method=RequestMethod.POST)
public @ResponseBody String readForm(@ModelAttribute JavaBean bean) {
	return "Read x-www-form-urlencoded: " + bean;
}

JavaBean:

@XmlRootElement
public class JavaBean {
	
	@NotNull
	private String foo;

	@NotNull
	private String fruit;
}

Write a Form foo=bar&fruit=apple

@RequestMapping(value="/form", method=RequestMethod.GET)
public @ResponseBody MultiValueMap<String, String> writeForm() {
	MultiValueMap<String, String> map = new LinkedMultiValueMap<String, String>();
	map.add("foo", "bar");
	map.add("fruit", "apple");
	return map;
}

JavaBean参考上面的

Read XML Read from XML Foo:bar, Fruit:apple

@RequestMapping(value="/xml", method=RequestMethod.POST)
public @ResponseBody String readXml(@RequestBody JavaBean bean) {
	return "Read from XML: " + bean;
}

Write XML

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<javaBean>
    <foo>bar</foo>
    <fruit>apple</fruit>
</javaBean>

java:

@RequestMapping(value="/xml", method=RequestMethod.GET)
public @ResponseBody JavaBean writeXml() {
	return new JavaBean("bar", "fruit");
}

Read JSON Read from JSON Foo:bar, Fruit:apple

@RequestMapping(value="/json", method=RequestMethod.POST)
public @ResponseBody String readJson(@Valid @RequestBody JavaBean bean) {
	return "Read from JSON: " + bean;
}

Write JSON{"foo":"bar", "fruit":"apple"}

@RequestMapping(value="/json", method=RequestMethod.GET)
public @ResponseBody JavaBean writeJson() {
	return new JavaBean("bar", "fruit");
}

Read Atom Read My Atom feed

@RequestMapping(value="/atom", method=RequestMethod.POST)
public @ResponseBody String readFeed(@RequestBody Feed feed) {
	return "Read " + feed.getTitle();
}

Write Atom
<?xml version="1.0" encoding="UTF-8"?>
<feed xmlns="http://www/w3/org/2005/Atom">
<title>My Atom feed</title>
</feed>

@RequestMapping(value="/atom", method=RequestMethod.GET)
public @ResponseBody Feed writeFeed() {
	Feed feed = new Feed();
	feed.setFeedType("atom_1.0");
	feed.setTitle("My Atom feed");
	return feed;
}

Read Rss

@RequestMapping(value="/rss", method=RequestMethod.POST)
public @ResponseBody String readChannel(@RequestBody Channel channel) {
	return "Read " + channel.getTitle();
}

Write Rss

@RequestMapping(value="/rss", method=RequestMethod.GET)
public @ResponseBody Channel writeChannel() {
	Channel channel = new Channel();
	channel.setFeedType("rss_2.0");
	channel.setTitle("My RSS feed");
	channel.setDescription("Description");
	channel.setLink("http://localhost:8080/mvc-showcase/rss");
	return channel;
}