為什么80%的碼農(nóng)都做不了架構(gòu)師？>>> ??

Spring reference寫到：

Mapping the response body with the @ResponseBody annotation

The @ResponseBodyannotation is similar to @RequestBody. This annotation can be put on a method and indicates that the return type should be written straight to the HTTP response body (and not placed in a Model, or interpreted as a view name).
For example:
@RequestMapping(value = "/something", method = RequestMethod.PUT)
@ResponseBody
public String helloWorld() {
????return "Hello World";
}
?
The above example will result in the text Hello World? being written to the HTTP response stream. As with @RequestBody, Spring converts the returned object to a response body by using an HttpMessageConverter. For more information on these converters, see the previous section and Message Converters.
Jast領(lǐng)會到：

使用@ResponseBody注解映射響應(yīng)體
@ResponseBody注解和@RequestBody注解類似。這個注解能使用在方法上，用來指明該方法的返回類型將直接作為響應(yīng)給Http請求(不會換成Model,或解析為視圖的名字)

舉個例子：
@RequestMapping(value = "/something", method = RequestMethod.PUT)
@ResponseBody
public String helloWorld() {
????return "Hello World";
}
這上面的例子將以text/html形式響應(yīng)HTTP請求。和@RequestBody一樣，Spring使用HttpMessageConverter來將方法的返回值進行類型轉(zhuǎn)換的。對于不同的返回值Spring會轉(zhuǎn)化成不同的 類型。

轉(zhuǎn)載于:https://my.oschina.net/jast90/blog/286513

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