Spring security 重写Filter实现json登录
在使用SpringSecurity中,大伙都知道默认的登录数据是通过key/value的形式来传递的,默认情况下不支持JSON格式的登录数据,如果有这种需求,就需要自己来解决,本文主要解决此问题:
JSON登录
上面演示的是一种原始的登录方案,如果想将用户名密码通过JSON的方式进行传递,则需要自定义相关过滤器,通过分析源码我们发现,默认的用户名密码提取在UsernamePasswordAuthenticationFilter过滤器中,部分源码如下:
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public class UsernamePasswordAuthenticationFilter extends AbstractAuthenticationProcessingFilter {
public static final String SPRING_SECURITY_FORM_USERNAME_KEY = "username" ;
public static final String SPRING_SECURITY_FORM_PASSWORD_KEY = "password" ;
private String usernameParameter = SPRING_SECURITY_FORM_USERNAME_KEY;
private String passwordParameter = SPRING_SECURITY_FORM_PASSWORD_KEY;
private boolean postOnly = true ;
public UsernamePasswordAuthenticationFilter() {
super ( new AntPathRequestMatcher( "/login" , "POST" ));
}
public Authentication attemptAuthentication(HttpServletRequest request, HttpServletResponse response) throws AuthenticationException {
if (postOnly && !request.getMethod().equals( "POST" )) {
throw new AuthenticationServiceException( "Authentication method not supported: " + request.getMethod());
}
String username = obtainUsername(request);
String password = obtainPassword(request);
if (username == null ) {
username = "" ;
}
if (password == null ) {
password = "" ;
}
username = username.trim();
UsernamePasswordAuthenticationToken authRequest = new UsernamePasswordAuthenticationToken(username, password); // Allow subclasses to set the "details" property
setDetails(request, authRequest);
return this .getAuthenticationManager().authenticate(authRequest);
}
protected String obtainPassword(HttpServletRequest request) {
return request.getParameter(passwordParameter);
}
protected String obtainUsername(HttpServletRequest request) {
return request.getParameter(usernameParameter);
}
//...
//...
}
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从这里可以看到,默认的用户名/密码提取就是通过request中的getParameter来提取的,如果想使用JSON传递用户名密码,只需要将这个过滤器替换掉即可,自定义过滤器如下:
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public class CustomAuthenticationFilter extends UsernamePasswordAuthenticationFilter {
@Override
public Authentication attemptAuthentication(HttpServletRequest request, HttpServletResponse response) throws AuthenticationException {
if (request.getContentType().equals(MediaType.APPLICATION_JSON_UTF8_VALUE) || request.getContentType().equals(MediaType.APPLICATION_JSON_VALUE)) {
ObjectMapper mapper = new ObjectMapper();
UsernamePasswordAuthenticationToken authRequest = null ;
try (InputStream is = request.getInputStream()) {
Map<String, String> authenticationBean = mapper.readValue(is, Map. class );
authRequest = new UsernamePasswordAuthenticationToken(authenticationBean.get( "username" ), authenticationBean.get( "password" ));
} catch (IOException e) {
e.printStackTrace();
authRequest = new UsernamePasswordAuthenticationToken( "" , "" );
} finally {
setDetails(request, authRequest);
return this .getAuthenticationManager().authenticate(authRequest);
}
} else {
return super .attemptAuthentication(request, response);
}
}
}
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这里只是将用户名/密码的获取方案重新修正下,改为了从JSON中获取用户名密码,然后在SecurityConfig中作出如下修改:
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@Override
protected void configure(HttpSecurity http) throws Exception {
http.authorizeRequests().anyRequest().authenticated().and().formLogin().and().csrf().disable();
http.addFilterAt(customAuthenticationFilter(), UsernamePasswordAuthenticationFilter. class );
}
@Bean
CustomAuthenticationFilter customAuthenticationFilter() throws Exception {
CustomAuthenticationFilter filter = new CustomAuthenticationFilter();
filter.setAuthenticationSuccessHandler( new AuthenticationSuccessHandler() {
@Override
public void onAuthenticationSuccess(HttpServletRequest req, HttpServletResponse resp, Authentication authentication) throws IOException, ServletException {
resp.setContentType( "application/json;charset=utf-8" );
PrintWriter out = resp.getWriter();
RespBean respBean = RespBean.ok( "登录成功!" );
out.write( new ObjectMapper().writeValueAsString(respBean));
out.flush();
out.close();
}
});
filter.setAuthenticationFailureHandler( new AuthenticationFailureHandler() {
@Override
public void onAuthenticationFailure(HttpServletRequest req, HttpServletResponse resp, AuthenticationException e) throws IOException, ServletException {
resp.setContentype( "application/json;charset=utf-8" );
PrintWriter out = resp.getWriter();
RespBean respBean = RespBean.error( "登录失败!" );
out.write( new ObjectMapper().writeValueAsString(respBean));
out.flush();
out.close();
}
});
filter.setAuthenticationManager(authenticationManagerBean());
return filter;
}
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搞定~
Spring security5 使用json登录
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public class CustomUsernamePasswordAuthenticationFilter extends UsernamePasswordAuthenticationFilter {
@Override
@SneakyThrows (IOException. class ) //lombok try catch
public Authentication attemptAuthentication(HttpServletRequest request, HttpServletResponse response) throws AuthenticationException {
if (request.getContentType().contains(MediaType.APPLICATION_JSON_VALUE)) {
ObjectMapper mapper = new ObjectMapper();
Map<String,String> map = mapper.readValue(request.getInputStream(), Map. class );
String username = map.get( super .getUsernameParameter());
String password = map.get( super .getPasswordParameter());
if (username == null ) {
username = "" ;
}
if (password == null ) {
password = "" ;
}
username = username.trim();
UsernamePasswordAuthenticationToken authRequest = new UsernamePasswordAuthenticationToken(
username, password);
setDetails(request, authRequest);
return this .getAuthenticationManager().authenticate(authRequest);
}
return super .attemptAuthentication(request, response);
}
}
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@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {
@Override
protected void configure(HttpSecurity http) throws Exception {
http.addFilterAt(usernamePasswordAuthenticationFilter(), UsernamePasswordAuthenticationFilter. class )
}
CustomUsernamePasswordAuthenticationFilter usernamePasswordAuthenticationFilter() throws Exception {
CustomUsernamePasswordAuthenticationFilter filter = new CustomUsernamePasswordAuthenticationFilter();
filter.setAuthenticationManager( super .authenticationManagerBean());
filter.setFilterProcessesUrl(customSecurityProperties.getLoginUrl());
//处理登录成功
filter.setAuthenticationSuccessHandler( new AuthenticationSuccessHandler());
//处理登录失败
filter.setAuthenticationFailureHandler( new AuthenticationFailureHandler());
return filter;
}
}
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以上为个人经验,希望能给大家一个参考,也希望大家多多支持服务器之家。
原文链接:https://haoxuanli.blog.csdn.net/article/details/104409200