我正在研究Java桌面应用程序,经过一些搜索后,我能够使用RestTemplate对用户进行身份验证。现在的情况是我在桌面端有cookie String(下面给出的代码)。现在我想做的是做两件重要的事情,让用户使用该cookie登录,以及访问(GET,POST,DELETE)安全资源,这些资源标有@Secured或@PreAuthorize注释。
这是我的验证码:
@Override
public void initialize(URL location, ResourceBundle resources) {
submitButton.setOnAction(event -> {
if(!(usernameField.getText().isEmpty() && passwordField.getText().isEmpty())){
try {
RestTemplate rest = new RestTemplate();
String jsessionid = rest.execute("http://localhost:8080/j_spring_security_check", HttpMethod.POST,
new RequestCallback() {
@Override
public void doWithRequest(ClientHttpRequest request) throws IOException {
request.getBody().write(("j_username=" + usernameField.getText() + "&j_password=" + passwordField.getText()).getBytes());
}
}, new ResponseExtractor<String>() {
@Override
public String extractData(ClientHttpResponse response) throws IOException {
List<String> cookies = response.getHeaders().get("Cookie");
// assuming only one cookie with jsessionid as the only value
if (cookies == null) {
cookies = response.getHeaders().get("Set-Cookie");
}
String cookie = cookies.get(cookies.size() - 1);
System.out.println("Cookie is "+cookie);
int start = cookie.indexOf('=');
int end = cookie.indexOf(';');
return cookie.substring(start + 1, end);
}
});
// rest.put("http://localhost:8080/rest/program.json;jsessionid=" + jsessionid, new DAO("REST Test").asJSON());
} catch (AuthenticationException e) {
System.out.println("AuthenticationException");
}
} else {
System.out.println("Fields are empty");
}
});
}
计划的输出是:
DEBUG: org.springframework.web.client.RestTemplate - Created POST request for "http://localhost:8080/j_spring_security_check"
DEBUG: org.springframework.web.client.RestTemplate - POST request for "http://localhost:8080/j_spring_security_check" resulted in 302 (Found)
Cookie is JSESSIONID=903B2924CCC84421931D52A4F0AA3C7E; Path=/; HttpOnly
如果我在服务器端,我会简单地调用以下方法来获取当前经过身份验证的用户:
@Override
public Person getCurrentlyAuthenticatedUser() {
Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
if (authentication == null) {
return null;
} else {
return personDAO.findPersonByUsername(authentication.getName());
}
}
如何在基于桌面的Java应用程序上获取当前身份验证用户,以便我可以使用以下方法并在桌面java应用程序上进行身份验证。 :
Collection<GrantedAuthority> authorities = new ArrayList<>();
authorities.add(new SimpleGrantedAuthority("ROLE_USER"));
Authentication authentication = new UsernamePasswordAuthenticationToken(person1, null, authorities);
SecurityContextHolder.getContext().setAuthentication(authentication);
这样,我也可以将@Secured注释用于桌面java应用程序。非常感谢。
更新
所以在服务器端我创建了一个方法,它为我提供了登录用户。正如答案中所建议的,我可以使用相同的休息模板,但我想将cookie存储在用户本地数据库中,而不是在用户点击此处和那里时传递Resttemplates对象。
服务器端方法:
@Secured("ROLE_USER")
@RequestMapping(value = "/rest/getloggedinuser", method = RequestMethod.GET)
public
@ResponseBody
ResponseEntity<RestPerson> getLoggedInRestUser() {
Person person = this.personService.getCurrentlyAuthenticatedUser();
RestPerson restPerson = new RestPerson();
restPerson.setFirstname(person.getFirstName());
restPerson.setUsername(person.getUsername());
restPerson.setPassword("PROTECTED");
return new ResponseEntity<RestPerson>(restPerson, HttpStatus.OK);
}
现在,接下来,我现在尝试使用相同的RestTemplate检查此方法是否适用于下面的代码,但我真的想知道如何只使用cookie来实现此目的:
HttpHeaders requestHeaders = new HttpHeaders();
requestHeaders.add("Cookie", cookie);
HttpEntity requestEntity = new HttpEntity(null, requestHeaders);
ResponseEntity rssResponse = rest.exchange(
"/rest/getloggedinuser",
HttpMethod.GET,
requestEntity,
Person.class);
String rssResponseBody = (String)rssResponse.getBody();
System.out.println("Response body is ");
有没有办法将ResponseBody中的Object强制转换为Person对象???
答案 0 :(得分:0)
<强>更新强>
您不需要传递RestTemplate,只需将其设为单例并在任何地方使用它。
rssResponse.getBody();
应该返回一个Person对象,而不是String。