Spring Boot启动分析工具使用求助：访问指定路径报错

Hey there! Let's break down what might be going wrong with your Spring Boot Startup Analysis Tool access issue. I've run into similar hiccups before, so here are the most common fixes to check:

First off, make sure you’ve added the correct dependencies to your project—this is a super common oversight. The Startup Analysis Tool relies on both the actuator and analyzer starters, and version alignment with your Spring Boot release is critical.

For Maven (Spring Boot 2.x/3.x):

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-startup-analyzer</artifactId>
    <optional>true</optional>
</dependency>

Ensure the versions match your Spring Boot parent version (e.g., if you’re on Spring Boot 3.2.x, use 3.2.x for both dependencies). Missing either dependency will mean the /spring-startup endpoint never gets registered.

You mentioned modifying the security filter, but chances are you didn’t properly whitelist the /spring-startup endpoint. The exact syntax depends on your Spring Security version:

For Spring Security 5.x: #

@Override
protected void configure(HttpSecurity http) throws Exception {
    http.authorizeRequests()
        .antMatchers("/spring-startup/**").permitAll() // Allow unauthenticated access
        .anyRequest().authenticated();
}

For Spring Security 6+ (new lambda DSL): #

@Bean
public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
    http.authorizeHttpRequests(auth -> auth
        .requestMatchers("/spring-startup/**").permitAll()
        .anyRequest().authenticated()
    );
    // If CSRF is enabled, exclude the endpoint to avoid blockage
    http.csrf(csrf -> csrf.ignoringRequestMatchers("/spring-startup/**"));
    return http.build();
}

Also, check if your custom security filters are running before the Spring Security filters that handle the permitAll rule—misordered filters can still block access even if you’ve whitelisted the path.

Check your application.properties/application.yml for these common misconfigurations:

• If you set management.endpoints.web.base-path=/actuator, you’ll need to access http://localhost:8080/actuator/spring-startup instead of the root path.
• Ensure the endpoint isn’t disabled: Add management.endpoint.startup.enabled=true (it’s enabled by default, but worth checking if you have global endpoint disable rules).

The Spring Boot Startup Analyzer has strict version matching. For example:

• Spring Boot 2.7.x → Analyzer 2.7.x
• Spring Boot 3.0.x → Analyzer 3.0.x
• Spring Boot 3.1+ → Analyzer 3.1+
  Mismatched versions can cause silent registration failures or runtime errors when accessing the endpoint. Double-check your dependency versions against your Spring Boot parent.

If you have custom Filter or HandlerInterceptor beans, make sure they’re not blocking the /spring-startup endpoint. For example, a filter that checks for a specific header might reject requests to this path. Add a condition in your filter to skip processing for /spring-startup/**.

When you try to access the endpoint, check your logs for specific error messages—they’ll give you the clearest clue:

• "No mapping found for HTTP request with URI [/spring-startup]" → Endpoint not registered (check dependencies)
• "Access is denied" → Security config issue
• Bean creation errors related to the startup analyzer → Version mismatch or missing dependencies

If none of these fix the issue, share the exact exception message from your logs and a snippet of your security config, and we can troubleshoot further!

内容的提问来源于stack exchange，提问作者Richard