本文共 2160 字，大约阅读时间需要 7 分钟。

话不多说，直接代码：

@Controller//控制器@RequestMapping("/anno")//路径public class DemoAnnoController {    /**     * 此方法未标明路径，因此使用类级别的路径/anno；produces可定制返回的response的媒体类型和字符集，或需要返回值是json对象。     * ResponseBody支持将返回值放在response体内，而不是返回一个页面，此注解返回数据，此注解可以放置在返回值前或者方法上。     * @param request     * @return     */    @RequestMapping(produces = "text/plain;charset=UTF-8")    public @ResponseBody String index(HttpServletRequest request){        return "url:"+request.getRequestURI()+" can access";    }    /**     * PathVariable接收路径参数     * @param str     * @param request     * @return     */    @RequestMapping(value="/pathvar/{str}",produces = "text/plain;charset=UTF-8")    public @ResponseBody String demoPathVar(@PathVariable String str,HttpServletRequest request){        return "url:"+request.getRequestURI()+" can access,str: "+str;    }    @RequestMapping(value = "/requestParam",produces = "text/plain;charset=UTF-8")    public @ResponseBody String passRequestParam(Long id,HttpServletRequest request){        return "url:"+request.getRequestURI()+" can access,id: "+id;    }    @RequestMapping(value = "/obj",produces = "application/json;charset=UTF-8")    @ResponseBody    public String passObj(DemoObj obj,HttpServletRequest request){        return "url:"+request.getRequestURI()+" can access, obj id: "+obj.getId()+" obj name:"+obj.getName();    }    /**     * 可以映射不同的路径到相同的方法     * @param request     * @return     */    @RequestMapping(value = {
 "/name1","/name2"},produces = "text/plain;charset=UTF-8")    public @ResponseBody String remove(HttpServletRequest request){        return "url:"+request.getRequestURI()+" can access ";    }}

@RestController//使用该注解，声明是控制器，并且返回数据时不需要@ResponseBody@RequestMapping("/rest")public class DemoRestController {    //返回json类型的数据    @RequestMapping(value = "/getjson",produces = {
 "application/json;charset=UTF-8"})    public DemoObj getjson(DemoObj obj){        return new DemoObj(obj.getId()+1,obj.getName()+"yy");    }    //返回xml类型的数据。    @RequestMapping(value = "/getxml",produces = {
 "application/xml;charset=UTF-8"})    public DemoObj getxml(DemoObj obj){        return new DemoObj(obj.getId()+1,obj.getName()+"yy");    }}

转载地址：http://zljqi.baihongyu.com/