【Java】restful风格请求,基于token鉴权实例

• Z时代
• 2024-01-10
• 分类：技术分享

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开发环境：

1. jdk 8
2. intellij idea
3. maven 3.6

所用技术：

1. springboot
2. restful

项目介绍

基于restful风格做的设计实例，即可jwt做token效验，实现增删查改,同时搭配自定义注解，方便过滤token验证

自定义注解

1.需要做验证的注解

@Target({ElementType.METHOD, ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
public @interface UserLoginToken {
boolean required() default true;
}
//拦截类(AuthenticationInterceptor)代码
public boolean preHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object object) throws Exception {
String token = httpServletRequest.getHeader("token");// 从 http 请求头中取出 token
// 如果不是映射到方法直接通过
if(!(object instanceof HandlerMethod)){
return true;
}
HandlerMethod handlerMethod=(HandlerMethod)object;
Method method=handlerMethod.getMethod();
//检查是否有passtoken注释，有则跳过认证
if (method.isAnnotationPresent(PassToken.class)) {
PassToken passToken = method.getAnnotation(PassToken.class);
if (passToken.required()) {
return true;
}
}
//检查有没有需要用户权限的注解
if (method.isAnnotationPresent(UserLoginToken.class)) {
UserLoginToken userLoginToken = method.getAnnotation(UserLoginToken.class);
if (userLoginToken.required()) {
// 执行认证
if (token == null) {
throw new RuntimeException("无token，请重新登录");
}
// 获取 token 中的 user id
String userId;
try {
userId = JWT.decode(token).getAudience().get(0);
} catch (JWTDecodeException j) {
throw new RuntimeException("token error");
}
String user = jedis.get(userId);
if (user == null) {
throw new RuntimeException("用户不存在，请重新登录");
}
// 验证 token
JSONObject jsonObject1=JSONObject.parseObject(user);
JWTVerifier jwtVerifier = JWT.require(Algorithm.HMAC256(jsonObject1.getString("planType"))).build();
try {
jwtVerifier.verify(token);
} catch (JWTVerificationException e) {
throw new RuntimeException("token error");
}
return true;
}
}
return true;
}

项目结构

• 请求列表图片

• 项目结构图片

运行效果

• token 获取

@GetMapping("/token")
public JSONObject token(HttpServletResponse response ){
Date timeOut=DateUtil.offsetMinute(new Date(),time);    //过期时间
JSONObject jsonObject=new JSONObject();
String usecase = new JWTController().getFile("usecase.json");
JSONObject jsonObject1=JSONObject.parseObject(usecase);
String token=JWT.create().withExpiresAt(timeOut).withAudience(jsonObject1.getString("objectId"))
.sign(Algorithm.HMAC256(jsonObject1.getString("planType")));
response.setStatus(200);
jsonObject.put("token", token);
jedis.set(jsonObject1.getString("objectId"), usecase);
return jsonObject;
}

• 验证token

//主要@UserLoginToken发挥验证作用，否则验证成功
@UserLoginToken
@GetMapping("/authToken")
public String getMessage(){
return "身份验证成功 ";
}

• get 请求

@UserLoginToken
@GetMapping(value="/plan/{id}")
public String getPlan(@PathVariable String id, HttpServletResponse response) {
jedis.connect();
if (jedis.get(id) == null) {
response.setStatus(404);
return "No such record";
}
response.setStatus(200);
return jedis.get(id);
}

• post 请求

@UserLoginToken
@ResponseBody
@PostMapping(path="/plan")
public String addPlan(@RequestBody JSONObject jsonObject, HttpServletResponse response) throws IOException, ProcessingException {
String data = jsonObject.toString();
Boolean jsonValidity = Validator.isJSONValid(data);
if(jsonValidity) {
String uuid = UUID.randomUUID().toString();
jedis.set(uuid, data);
return "Create Success" + "\n" + uuid;
}
else {
response.setStatus(400);
return "JSON Schema not valid!";
}
}

• delete 请求

@UserLoginToken
@DeleteMapping(value="/plan/{id}")
public String deletePlan(@PathVariable String id, HttpServletResponse response) {
jedis.connect();
if (jedis.get(id) == null) {
response.setStatus(404);
return "No such record";
}
jedis.del(id);
response.setStatus(200);
return "Deleted Success" + "\n" + id;
}

• patch 请求

@UserLoginToken
@PatchMapping(value="/plan/{id}")
public String patchPlan(@RequestBody JSONObject jsonObject, @PathVariable String id, HttpServletResponse response) {
jedis.connect();
if (jedis.get(id) == null) {
response.setStatus(404);
return "No such record";
}
String data = jsonObject.toString();
String redisDate=jedis.get(id);
Map redisData=JSONUtil.toBean(redisDate,Map.class);
Map map=JSONUtil.toBean(data,Map.class);
for(Object o:map.keySet()){
redisData.put(o,map.get(o));
}
jedis.set(id, JSONUtil.toJsonStr(redisData));
response.setStatus(200);
return "Patched Success" + "\n" + id;
}

• put 请求

@UserLoginToken
@PutMapping(value="/plan/{id}")
public String updatePlan(@RequestBody JSONObject jsonObject, @PathVariable String id, HttpServletResponse response) throws IOException, ProcessingException {
jedis.connect();
if (jedis.get(id) == null) {
response.setStatus(404);
return "No such record";
}
String data = jsonObject.toString();
if(Validator.isJSONValid(data)) {
jedis.set(id, data);
response.setStatus(200);
return "Updated Success" + "\n" + id;
}
else {
response.setStatus(400);
return "Invalid JSON!";
}
}

项目总结

1. restful 结合jwt做token效验，所有请求的token放入headers中
2. 项目还加入schema.json，Json Schema就是用来定义json数据约束的一个标准
3. 其他有更好的简洁操作习惯，希望留言交流
4. 程序有问题找程序帮

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