RESTful小拓展

RESTful

1.每个URI代表一种资源

2.客户端与服务器之间，传递这种资源的某种表现层

3.客户端通过HTTP动词，对服务器端资源进行操作，实现“表现层状态转换”

 

 

RESTful的应用相对广泛，在豆瓣网上也有所应用

 

 

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但并不是所有的接口都适用于RESTful的，例如我们填写个人信息/收货地址的时候字段特别多。

 

 

 

基础代码理解:

@RequestMapping(value = "/book",method = RequestMethod.GET)
@ResponseBody
public String book(HttpServletRequest request){
    String contentType = request.getContentType();
    if(contentType == null){
        return "book.default";
    }else if(contentType.equals("txt")){
        return "book.txt";
    }else if(contentType.equals("html")){
        return "book.html";
    }
    return "book.default";











}

@RequestMapping(value = "/subject/{subjectId}",method = RequestMethod.GET)
@ResponseBody
public String subjectGet(@PathVariable("subjectId") String subjectId) {
    return "this is a get method;subjectId:"+subjectId;
}

@RequestMapping(value = "/subject/{subjectId}",method = RequestMethod.POST)
@ResponseBody
public String subjectPost(@PathVariable("subjectId") String subjectId) {
    return "this is a Post method;subjectId:"+subjectId;


}

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

在做多参数的时候，我们应该尽量避免相同URI,浏览器并不能区分开来传递的参数所匹配的接口。

 

 

例:

/*
这两个方法会出现浏览器找不到匹配的接口(模棱两可)
    @RequestMapping(value = "/{categoryId}/{pageNum}/{pageSize}/{orderBy}",method = RequestMethod.GET)
    @ResponseBody
    public ServerResponse<PageInfo> listRESTfulBadcase(@PathVariable(value = "categoryId")Integer categoryId,
                                                @PathVariable(value = "pageNum")Integer pageNum,
                                                @PathVariable(value = "pageSize")Integer pageSize,
                                                @PathVariable(value = "orderBy")String orderBy){
        if(pageNum == null){pageNum=1;}
        if(pageSize == null){pageSize=10;}
        if(StringUtils.isBlank(orderBy)){orderBy="price_asc";}
        return iProductService.getProductByKeywordCategory("",categoryId,pageNum,pageSize,orderBy);
    }


    @RequestMapping(value = "/{keyword}/{pageNum}/{pageSize}/{orderBy}",method = RequestMethod.GET)
    @ResponseBody
    public ServerResponse<PageInfo> listRESTfulBadcase(@PathVariable(value = "keyword")String keyword,
                                                @PathVariable(value = "pageNum")Integer pageNum,
                                                @PathVariable(value = "pageSize")Integer pageSize,
                                                @PathVariable(value = "orderBy")String orderBy){

        if(pageNum == null){pageNum=1;}
        if(pageSize == null){pageSize=10;}
        if(StringUtils.isBlank(orderBy)){orderBy="price_asc";}
        return iProductService.getProductByKeywordCategory(keyword,null,pageNum,pageSize,orderBy);
    }
    */

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

如果非要做多参数，那么正确的解决方法如下:

//RESTful改进版
//http://www.kerry.link/product/keyword/手机/1/10/price_asc
@RequestMapping(value = "/keyword/{keyword}/{pageNum}/{pageSize}/{orderBy}",method = RequestMethod.GET)
@ResponseBody
public ServerResponse<PageInfo> listRESTful(@PathVariable(value = "keyword")String keyword,
                                            @PathVariable(value = "pageNum")Integer pageNum,
                                            @PathVariable(value = "pageSize")Integer pageSize,
                                            @PathVariable(value = "orderBy")String orderBy){

    if(pageNum == null){pageNum=1;}
    if(pageSize == null){pageSize=10;}
    if(StringUtils.isBlank(orderBy)){orderBy="price_asc";}
    return iProductService.getProductByKeywordCategory(keyword,null,pageNum,pageSize,orderBy);
}
//RESTful改进版
//http://www.kerry.link/product/category/100012/1/10/price_asc
@RequestMapping(value = "/category/{categoryId}/{pageNum}/{pageSize}/{orderBy}",method = RequestMethod.GET)//列表
@ResponseBody
public ServerResponse<PageInfo> listRESTful(@PathVariable(value = "categoryId")Integer categoryId,
                                                   @PathVariable(value = "pageNum")Integer pageNum,
                                                   @PathVariable(value = "pageSize")Integer pageSize,
                                                   @PathVariable(value = "orderBy")String orderBy){
    if(pageNum == null){pageNum=1;}
    if(pageSize == null){pageSize=10;}
    if(StringUtils.isBlank(orderBy)){orderBy="price_asc";}
    return iProductService.getProductByKeywordCategory("",categoryId,pageNum,pageSize,orderBy);
}