• SpringBoot RestFul风格API接口开发


    本文介绍在使用springBoot如何进行Restful Api接口的开发及相关注解已经参数传递如何处理。

    一、概念:

      REST全称是Representational State Transfer,中文意思是表述(编者注:通常译为表征)性状态转移。 它首次出现在2000年Roy Fielding的博士论文中,Roy Fielding是HTTP规范的主要编写者之一。 他在论文中提到:"我这篇文章的写作目的,就是想在符合架构原理的前提下,理解和评估以网络为基础的应用软件的架构设计,得到一个功能强、性能好、适宜通信的架构。REST指的是一组架构约束条件和原则。" 如果一个架构符合REST的约束条件和原则,我们就称它为RESTful架构。
      REST本身并没有创造新的技术、组件或服务,而隐藏在RESTful背后的理念就是使用Web的现有特征和能力, 更好地使用现有Web标准中的一些准则和约束。虽然REST本身受Web技术的影响很深, 但是理论上REST架构风格并不是绑定在HTTP上,只不过目前HTTP是唯一与REST相关的实例。 所以我们这里描述的REST也是通过HTTP实现的REST。

    二、注解说明:

    1.Rest控制器

    @RestController注释用于定义RESTful Web服务。它提供JSON,XML和自定义响应。其语法如下所示 

    @RestController
    public class UserRestController{
    
    
    }

    有了该注解,在响应返回的是json格式的数据,我们就不要写@ResponseBody注解了

    2.Java请求映射

    @RequestMapping注释用于定义访问REST端点的Request URI。可以定义Request方法来使用和生成对象。默认请求方法是:GET。

    @RequestMapping(value = "/user/userCode/{userCode}", method = RequestMethod.GET)
    public ApiUser getUserByUserCode(@PathVariable("userCode") String userCode) {
    AfaUser user = userService.getAfaUserByUserCode(userCode);
    ApiUser apiUser=BeanUtils.copyBean(user,ApiUser.class);
    if(user!=null){
    List<OrgBean> orgs=this.getOrgParentListByOrgId(user.getMainOrgid());
    apiUser.setOrgs(orgs);
    }
    return apiUser;
    }

    有人就问了,那要是我有多个参数,GET我怎么操作了:

    方法一:换成POST请求,将所有参数封装成一个类,然后使用 @RequestBody注解将参数自动解析成该类的一个实例

    @ApiOperation(value = "根据用户对象获取用户列表")
    @RequestMapping(value = "/users", method = RequestMethod.POST)
    public List<ApiUser> getUserListByApiUser(@RequestBody ApiUser apiUser) {
    AfaUser afaUser = BeanUtils.copyBean(apiUser, AfaUser.class);
    List<ApiUser> apiUserList=BeanUtils.copyList(userService.getAfaUserList(afaUser), ApiUser.class);
    for(ApiUser _user:apiUserList){
    if(StringUtils.isNotNullAndBlank(_user.getMainOrgid())){
    List<OrgBean> orgs=this.getOrgParentListByOrgId(_user.getMainOrgid());
    _user.setOrgs(orgs);
    }
    }
    return apiUserList;
    }

    有人说那你这样就不符合规范了,不过,这个“规范”只是建议大家这么来遵守,并不是强制要求

    方法二:还是使用GET请求,但是将所有请求参数通过JSON格式来传递,controller拿到参数后,使用 JSON 相关的库(如 gson),将该JSON转化为相应的对象

    public List<String> getName(@RequestParam String queryDtoStr) {
            QueryDto queryDto = new Gson().fromJson(queryDtoStr, QueryDto .class);
            // ....
            return new ArrayList<>();
    }

    这样请求的就要像这样:

    http://localhost:8080/app/names?queryDtoStr={"query1":12,"query2":2,"query3":2}

    3.2 POST主要用于创建资源

    HTTP POST请求用于创建资源。 此方法包含请求正文。可以发送请求参数和路径变量来定义自定义或动态URL。例如:

    @RequestMapping(value="/user", method = RequestMethod.POST)
        public void doInsert(@RequestBody ApiUser apiUser) {
            AfaUser user = BeanUtils.copyBean(apiUser, AfaUser.class);
            userService.addAfaUser(user);
        }    

    3.3 PUT主要用于更新资源

    HTTP PUT请求用于更新现有资源,此方法包含请求正文。可以发送请求参数和路径变量来自定义或动态URL。例如:

        @RequestMapping(value = "/user", method = RequestMethod.PUT)
        public void doUpdate(@RequestBody ApiUser apiUser) {
            AfaUser user = BeanUtils.copyBean(apiUser, AfaUser.class);
            userService.updateAfaUser(user);
        }

    3.4 DELETE主要用于删除资源

     HTTP DELETE请求用于删除现有资源,此方法包含请求正文。可以发送请求参数和路径变量来自定义或动态URL。例如: 

        @ApiOperation(value = "删除用户")
        @RequestMapping(value = "/user", method = RequestMethod.DELETE)
        public void doDelelte(@RequestBody ApiUser apiUser) {
            AfaUser user = BeanUtils.copyBean(apiUser, AfaUser.class);
            userService.delAfaUser(user);
        }    

    以上方法参数是接收一个对象,如果是单个属性,可以直接跟在url后面。

    完整示例:

    /**
     * 
     * @author Shaw
     *
     */
    @RestController
    @RequestMapping(value = "/rest", produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
    @Api(value = "/rest", tags = "UserRestController", description = "用户管理接口")
    public class UserRestController{
    
        @Resource
        private AfaUserService userService;
        
        @Resource
        private AfaRoleService afaRoleService;
        
        @Resource
        private AfaOrgService orgService;
        
        @Resource
        private MenuHelper menuHelper;
        
        @Resource
        private AfaOrgService afaOrgService;
        
        @Resource
        private AfaAuthPartyService afaAuthPartyService;
        
        @ApiOperation(value = "新增用户")
        @RequestMapping(value="/user", method = RequestMethod.POST)
        public void doInsert(@RequestBody ApiUser apiUser) {
            AfaUser user = BeanUtils.copyBean(apiUser, AfaUser.class);
            userService.addAfaUser(user);
        }    
    
        @ApiOperation(value = "更新用户")
        @RequestMapping(value = "/user", method = RequestMethod.PUT)
        public void doUpdate(@RequestBody ApiUser apiUser) {
            AfaUser user = BeanUtils.copyBean(apiUser, AfaUser.class);
            userService.updateAfaUser(user);
        }
    
        @ApiOperation(value = "删除用户")
        @RequestMapping(value = "/user", method = RequestMethod.DELETE)
        public void doDelelte(@RequestBody ApiUser apiUser) {
            AfaUser user = BeanUtils.copyBean(apiUser, AfaUser.class);
            userService.delAfaUser(user);
        }    
    
        @ApiOperation(value = "修改密码")
        @RequestMapping(value = "/user/password", method = RequestMethod.PUT)
        public void resetUserPassWord(@RequestBody ApiUser apiUser) {
            AfaUser afaUser = BeanUtils.copyBean(apiUser, AfaUser.class);
            userService.resetUserPassWord(afaUser);        
        }    
    
        @ApiOperation(value = "根据用户编码获取用户")
        @RequestMapping(value = "/user/userCode/{userCode}", method = RequestMethod.GET)
        public ApiUser getUserByUserCode(@PathVariable("userCode") String userCode) {
            AfaUser user = userService.getAfaUserByUserCode(userCode);
            ApiUser apiUser=BeanUtils.copyBean(user,ApiUser.class);    
            if(user!=null){
                List<OrgBean> orgs=this.getOrgParentListByOrgId(user.getMainOrgid());
                apiUser.setOrgs(orgs);
            }
            return apiUser;
        }    
    
        @ApiOperation(value = "根据用户id获取用户")
        @RequestMapping(value = "/user/userId/{userId}", method = RequestMethod.GET)
        public ApiUser getUserByUserId(@PathVariable("userId") String userId) {
            if(StringUtils.isNotNullAndBlank(userId)){
                AfaUser user = userService.getAfaUserByUserId(userId);
                ApiUser apiUser=BeanUtils.copyBean(user,ApiUser.class);    
                if(user!=null){
                    List<OrgBean> orgs=this.getOrgParentListByOrgId(user.getMainOrgid());
                    apiUser.setOrgs(orgs);
                }
                return apiUser;
            }
            return null;
        }
    
        @ApiOperation(value = "根据角色编码获取用户")
        @RequestMapping(value = "/user/roleCode/{roleCode}", method = RequestMethod.GET)
        public List<ApiUser> getUserByRoleCode(@PathVariable("roleCode") String roleCode) {
            List<AfaUser> user =  userService.getUserByRoleCode(roleCode);
            return BeanUtils.copyList(user, ApiUser.class);
        }
    
        @ApiOperation(value = "获取所有用户")
        @RequestMapping(value = "/users", method = RequestMethod.GET)
        public List<ApiUser> getAllUserList() {
            return BeanUtils.copyList(userService.getAfaUserList(),ApiUser.class);
        }
    
        @ApiOperation(value = "根据用户对象获取用户列表")
        @RequestMapping(value = "/users", method = RequestMethod.POST)
        public List<ApiUser> getUserListByApiUser(@RequestBody ApiUser apiUser) {
            AfaUser afaUser = BeanUtils.copyBean(apiUser, AfaUser.class);
            List<ApiUser> apiUserList=BeanUtils.copyList(userService.getAfaUserList(afaUser), ApiUser.class);
            for(ApiUser _user:apiUserList){        
                if(StringUtils.isNotNullAndBlank(_user.getMainOrgid())){
                    List<OrgBean> orgs=this.getOrgParentListByOrgId(_user.getMainOrgid());
                    _user.setOrgs(orgs);    
                }
            }
            return apiUserList;
        }    
    
        @ApiOperation(value = "根据角色编码获取角色")
        @RequestMapping(value = "/users/roleCodes", method = RequestMethod.POST)
        public List<ApiUser> getUserByRoleCodes(@RequestBody List<String> roleList) {
            return BeanUtils.copyList(userService.getUserByRoleCodes(roleList),ApiUser.class);
        }
        
        @ApiOperation(value = "根据角色编码获取角色")
        @RequestMapping(value = "/users/page", method = RequestMethod.POST)
        public Page<ApiUserOrgPos> queryAfaUserPage(@RequestBody Searcher searcher,Page<ApiUserOrgPos> page) {
            Page<AfaUserOrgPos> apiUserOrgPos = BeanUtils.copyList(page, AfaUserOrgPos.class);
            return BeanUtils.copyList(userService.queryAfaUserPage(searcher, apiUserOrgPos,null), ApiUserOrgPos.class);
        }    
    
        @ApiOperation(value = "根据用户对象获取角色列表")
        @RequestMapping(value = "/role/user/", method = RequestMethod.POST)
        public List<ApiRole> getRolesByUser(@RequestBody ApiUser apiUser) {
            AfaUser afaUser = BeanUtils.copyBean(apiUser, AfaUser.class);
            String userCode=afaUser.getUserCode();
            return BeanUtils.copyList(menuHelper.findRoleByUserCode(userCode, null), ApiRole.class);
        }
    
        @ApiOperation(value = "根据用户Id对象获取角色列表")
        @RequestMapping(value = "/role/userId/{userId}", method = RequestMethod.GET)
        public List<ApiRole> getRolesByUserId(@PathVariable("userId") String userId) {
            AfaUser afaUser=userService.getAfaUserByUserId(userId);
            String userCode=afaUser.getUserCode();
            return BeanUtils.copyList(menuHelper.findRoleByUserCode(userCode, null), ApiRole.class);
        }
    
        @ApiOperation(value = "根据角色编码、机构id获取用户列表")
        @RequestMapping(value = "/users/{roleCode}/{orgId}", method = RequestMethod.GET)
        public List<ApiUser> getUsersByRoleCodeAndOrgId(@PathVariable("roleCode") String roleCode, @PathVariable("orgId") String orgId) {
            List<AfaUser> afaUserList=new ArrayList<AfaUser>();
            //1、先获取机构编码
            AfaOrg afaOrg=null;
            if(StringUtils.isNotNullAndBlank(orgId)){
                afaOrg=afaOrgService.getAfaOrgByOrgId(orgId);
            }
            
            String orgCode=null;
            if(afaOrg!=null){
                orgCode=afaOrg.getOrgCode();
            }
            
            //2、根据机构编码和角色获取角色授权表
            List<AfaAuthParty> partyList=null;
            if(StringUtils.isNullOrBlank(roleCode)&&StringUtils.isNullOrBlank(orgId)){
                
            }else{
                partyList=afaAuthPartyService.getAfaAuthPartyByRoleCodeAndOrgCode(orgCode,roleCode);
            }
            
    
            //3、根据party_type类型获取用户。
            //当party_type为org的时候,获取该org下的所有用户
            //当party_type为user的时候,判断该用户的主机构是不是orgId下的
            if(partyList!=null&&partyList.size()!=0){
                for(AfaAuthParty _party:partyList){
                    AfaUser afaUser=new AfaUser();
                    if(StringUtils.isNotNullAndBlank(orgId)){
                        afaUser.setMainOrgid(orgId);
                    }
                    
                    if("org".equals(_party.getPartyType())){                    
                        afaUserList.addAll(userService.getAfaUserList(afaUser));
                    }
                    
                    if("user".equals(_party.getPartyType())){
                        afaUser.setUserCode(_party.getPartyCode());
                    }
                    afaUserList.addAll(userService.getAfaUserList(afaUser));
                }
            }
            if(afaUserList.size()!=0){
                for (int i = 0; i < afaUserList.size()-1; i++) {
                    for (int j = afaUserList.size()-1; j > i; j--) {
                        if (afaUserList.get(j).getUserCode().equals(afaUserList.get(i).getUserCode())) {
                            afaUserList.remove(j);
                        }
                    }
                }
            }
    
            return BeanUtils.copyList(afaUserList, ApiUser.class);
        }
    
        @ApiOperation(value = "更新某些机构下用户的状态")
        @RequestMapping(value = "/users/status", method = RequestMethod.POST)
        public void changeUserStatusByOrgIdList(@RequestBody UserRequestParam requestParamObject) {
            if(CollectionUtils.isNotEmpty(requestParamObject.getOrgIdList())){        
                userService.changeUserStatusByOrgIdList(requestParamObject.getOrgIdList(),requestParamObject.getStatus());
            }
        }
    
        @ApiOperation(value = "根据casn获取用户列表")
        @RequestMapping(value = "/users/casn/{caSn}", method = RequestMethod.GET)
        public List<ApiUser> getApiUserByCaSn(@PathVariable("caSn")String caSn) {
            List<AfaUser> afaUser=userService.getApiUserByCaSn(caSn);
            return BeanUtils.copyList(afaUser, ApiUser.class);
        } 
        
    }
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  • 原文地址:https://www.cnblogs.com/qq3245792286/p/11150999.html
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