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);
    } 
    
}

posted @ 2019-07-08 14:30 My_blog_s 阅读(6125) 评论(0) 编辑收藏举报

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SpringBoot RestFul风格API接口开发

一、概念：

二、注解说明：

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