Spring-从筛选器返回JSON格式的错误消息
我正在开发一个Spring Boot REST应用程序 我注册了一个自定义AuthenticationEntryPoint,如果用户不提供凭据,它将返回“401 Unauthorized”错误Spring-从筛选器返回JSON格式的错误消息,json,spring,spring-boot,httpresponse,servlet-filters,Json,Spring,Spring Boot,Httpresponse,Servlet Filters,我正在开发一个Spring Boot REST应用程序 我注册了一个自定义AuthenticationEntryPoint,如果用户不提供凭据,它将返回“401 Unauthorized”错误 @Component public class CustomAuthenticationEntryPoint implements AuthenticationEntryPoint { @Override public void commence(HttpServletRequest r
@Component
public class CustomAuthenticationEntryPoint implements AuthenticationEntryPoint {
@Override
public void commence(HttpServletRequest request, HttpServletResponse response, AuthenticationException authException) throws IOException {
response.sendError(HttpServletResponse.SC_UNAUTHORIZED, "Unauthorized");
}
}
这非常有效,并返回JSON格式,如下所示:
{
"timestamp": 1465230610451,
"status": 401,
"error": "Unauthorized",
"exception": "org.springframework.security.authentication.BadCredentialsException",
"message": "Unauthorized",
"path": "/webapp/login"
}
现在,我使用以下doFilter()
override向应用程序添加了一个Filter
:
@ Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)throws IOException, ServletException {
try {
// Here be some code that fails.
} catch (Exception e) {
HttpServletResponse httpServletResponse = (HttpServletResponse) response;
httpServletResponse.sendError(HttpServletResponse.SC_UNAUTHORIZED, "Unauthorized");
}
chain.doFilter(request, response);
}
但是,与上面显示的JSON格式的DefaultErrorAttributes不同,此代码返回默认的Tomcat“Error report”HTML页面
为什么会发生这种情况?在这两种情况下,使两条错误消息保持一致(JSON格式)的最佳方法是什么?原始链接
移动chain.doFilter(请求、响应)将>编码到try块中。
public class TestFilter implements Filter {
@Override
public void init(FilterConfig filterConfig) throws ServletException {
}
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException,ServletException {
if(ANY CONDITION){
//ANY POJO CLASS
// ErrorResponse is a public return object that you define yourself
ErrorResponse errorResponse = new ErrorResponse();
errorResponse.setCode(401);
errorResponse.setMessage("Unauthorized Access");
byte[] responseToSend = restResponseBytes(errorResponse);
((HttpServletResponse) response).setHeader("Content-Type", "application/json");
((HttpServletResponse) response).setStatus(401);
response.getOutputStream().write(responseToSend);
return;
}
//ANY OTHER BUSINESS LOGIC
chain.doFilter(request, response);
}
@Override
public void destroy() {
}
private byte[] restResponseBytes(ErrorResponse eErrorResponse) throws IOException {
String serialized = new ObjectMapper().writeValueAsString(eErrorResponse);
return serialized.getBytes();
} }