[springmvc]request data

1. a query parameter value

@RequestParam("name")

2. a group of query parameter values

//A custom JavaBean with a getName()/setName() pair for each parameter
@RequestMapping(value="group")
public @ResponseBody String withParamGroup(JavaBean bean) {
    return "Obtained parameter group " + bean;
}

3. A path element value

//@PathVariable("var")
@RequestMapping(value="path/{var}")
public @ResponseBody String withPathVariable(@PathVariable String var) {
    return "Obtained 'var' path variable value '" + var + "'";
}

4. A request header value

//@RequestHeader("name")
@RequestMapping(value="header")
public @ResponseBody String withHeader(@RequestHeader String Accept) {
    return "Obtained 'Accept' header '" + Accept + "'";
}

5. A cookie value

//@CookieValue("name")
@RequestMapping(value="cookie")
public @ResponseBody String withCookie(@CookieValue String openid_provider) {
    return "Obtained 'openid_provider' cookie '" + openid_provider + "'";
}

6. The request body

//@RequestBody
@RequestMapping(value="body", method=RequestMethod.POST)
public @ResponseBody String withBody(@RequestBody String body) {
    return "Posted request body '" + body + "'";
}

7. The request body and any request header

//HttpEntity<T>
@RequestMapping(value="entity", method=RequestMethod.POST)
public @ResponseBody String withEntity(HttpEntity<String> entity) {
    return "Posted request body '" + entity.getBody() + "'; headers = " + entity.getHeaders();
}