前言:
现时同学们对“js实现登录验证跳转页面代码是什么”都比较珍视,我们都想要学习一些“js实现登录验证跳转页面代码是什么”的相关内容。那么小编同时在网上网罗了一些对于“js实现登录验证跳转页面代码是什么””的相关文章,希望各位老铁们能喜欢,小伙伴们一起来了解一下吧!SpringSecurity-5-自定义登录验证默认登录成功失败跳转页为什么自定义登录验证结果处理场景自定义登录成功的结果处理自定义登录失败的结果处理自定义权限访问异常结果处理默认登录成功失败跳转页如果我们 登录成功,由接口AuthenticationSuccessHandler进行登录结果处理,默认会使用SimpleUrlAuthenticationSuccessHandler,是AuthenticationSuccessHandler的实现类,SimpleUrlAuthenticationSuccessHandler核心代码如下
public class SimpleUrlAuthenticationSuccessHandler extends AbstractAuthenticationTargetUrlRequestHandler implements AuthenticationSuccessHandler { @Override public void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication) throws IOException, ServletException { handle(request, response, authentication); clearAuthenticationAttributes(request); }}
在抽象类AbstractAuthenticationTargetUrlRequestHandler,我们可以发现,其默认**defaultTargetUrl = /**,核心代码如下
在本例子中我们的**/页面为inxde.html**,实现代码如下
// 首页 @RequestMapping({"/index", "/", ""}) public String index() { return "index"; }
因此登录成功后跳转到,**如果我们不想默认跳转页面为/**,我们可以进行设置,如下图所示
当登录失败的时候,是由AuthenticationfailureHandler进行登录结果处理,默认跳转到failureUrl配置的路径对应的资源页面(一般也是跳转登录页login.html,重新登录)。为什么自定义登录验证结果处理场景前后端分离,后端返回结果应该是JSON实现千人千面(不同的人,登录后向不同的页面跳转)自定义登录成功的结果处理AuthenticationSuccessHandler完成登录成功处理创建MyAuthenticationSuccessHandler类直接实现AuthenticationSuccessHandler接口
注意:实现类上不要少了注解 @Component注解
@Componentpublic class MyAuthenticationSuccessHandler implements AuthenticationSuccessHandler { private static ObjectMapper objectMapper = new ObjectMapper(); @Override public void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication) throws IOException, ServletException { // 当认证成功后,响应 JSON 数据给前端 response.setContentType("application/json;charset=UTF-8"); response.getWriter().write(objectMapper.writeValueAsString("test登录成功")); }}
在 LearnSrpingSecurity中注入 和 引用自定义认证成功处理器 MyAuthenticationSuccessHandler,实现代码如下
测试
重启项目,访问跳转到登录页面,登录成功后结果为
继承SavedRequestAwareAuthenticationSuccessHandler实现登录成功处理
继承SavedRequestAwareAuthenticationSuccessHandler 类的话,他会记住我们上一次请求的资源路径,比如:用户请求syslog.html,没有登录所以被拦截到了登录页,当你登录成功之后会自动跳转到syslog.html,而不是主页面。代码实现如下
@Componentpublic class MySavedRequestAwareAuthenticationSuccessHandler extends SavedRequestAwareAuthenticationSuccessHandler { //在application配置文件中配置登录的类型是JSON数据响应还是做页面响应 @Value("${login.success.type}") private String loginType; //Jackson JSON数据处理类 private static ObjectMapper objectMapper = new ObjectMapper(); @Override public void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication) throws ServletException, IOException { if (loginType.equalsIgnoreCase("JSON")) { response.setContentType("application/json;charset=UTF-8"); response.getWriter().write(objectMapper.writeValueAsString("test Saved 登录成功")); } else { // 会帮我们跳转到上一次请求的页面上 super.onAuthenticationSuccess(request, response, authentication); } }}
在application.properties中配置login.success.type
login.success.type=HTML #设置为html或者json,如果为json返回json测试
使用浏览器访问,登录成功后,页面显示为
自定义登录失败的结果处理AuthenticationFailureHandler实现登录失败验证创建MyAuthenticationFailureHandler类实现AuthenticationFailureHandler接口
注意:实现类上不要少了注解 @Component注解
@Componentpublic class MyAuthenticationFailureHandler implements AuthenticationFailureHandler { private static ObjectMapper objectMapper = new ObjectMapper(); @Override public void onAuthenticationFailure(HttpServletRequest request, HttpServletResponse response, AuthenticationException exception) throws IOException, ServletException { // 当认证失败后,响应 JSON 数据给前端 response.setContentType("application/json;charset=UTF-8"); response.getWriter().write(objectMapper.writeValueAsString("test登录失败")); }}在 LearnSrpingSecurity中注入 和 引用自定义认证成功处理器 MyAuthenticationFailureHandler,实现代码如下测试
访问,输入错误的用户名和密码,结果如下
SimpleUrlAuthenticationFailureHandler 实现登录失败处理
继承SimpleUrlAuthenticationFailureHandler 类。该类中默认实现了登录验证失败的跳转逻辑,即登录失败之后回到登录页面。我们可以利用这一点简化我们的代码。实现代码如下
@Componentpublic class MySimpleUrlAuthenticationFailureHandler extends SimpleUrlAuthenticationFailureHandler { //在application配置文件中配置登录的类型是JSON数据响应还是做页面响应 @Value("${login.success.type}") private String loginType; private static ObjectMapper objectMapper = new ObjectMapper(); @Override public void onAuthenticationFailure(HttpServletRequest request, HttpServletResponse response, AuthenticationException exception) throws IOException, ServletException { if (loginType.equalsIgnoreCase("JSON")) { response.setContentType("application/json;charset=UTF-8"); response.getWriter().write( objectMapper.writeValueAsString("用户名或密码存在错误,请检查后再次登录")); } else { response.setContentType("text/html;charset=UTF-8"); super.onAuthenticationFailure(request, response, exception); } }}
其他步骤和AuthenticationFailureHandler实现登录失败验证的步骤一致。
自定义权限访问异常结果处理
除了登录成功、登录失败的结果处理,Spring Security还为我们提供了其他的结果处理类。比如用户未登录就访问系统资源
AuthenticationEntryPoint 用来解决匿名用户访问无权限资源时的异常代码实现如下
注意:实现类上不要少了注解 @Component注解
@Componentpublic class MyAuthenticationEntryPoint implements AuthenticationEntryPoint { //Jackson JSON数据处理类 private static ObjectMapper objectMapper = new ObjectMapper(); @Override public void commence(HttpServletRequest request, HttpServletResponse response, AuthenticationException authException) throws IOException, ServletException { response.setCharacterEncoding("utf-8"); response.setContentType("text/javascript;charset=utf-8"); response.getWriter().print(objectMapper.writeValueAsString("没有访问权限!")); }}AccessDeniedHandler解决认证用户没有访问权限
注意:实现类上不要少了注解 @Component注解
@Componentpublic class MyAccessDeineHandler implements AccessDeniedHandler { //Jackson JSON数据处理类 private static ObjectMapper objectMapper = new ObjectMapper(); @Override public void handle(HttpServletRequest request, HttpServletResponse response, AccessDeniedException accessDeniedException) throws IOException, ServletException { response.setCharacterEncoding("utf-8"); response.setContentType("text/javascript;charset=utf-8"); response.getWriter().print(objectMapper.writeValueAsString("认证用户没有访问权限!")); }}
在 LearnSrpingSecurity中注入MyAccessDeineHandler和MyAuthenticationEntryPoint实现如下
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