import org.springframework.context.annotation.Configuration;import org.springframework.context.annotation.PropertySource;import java.io.IOException;import java.io.InputStream;import java.util.Properties;@Configuration@PropertySource("classpath:config.properties")public class AppConfig { private static final Properties props = new Properties(); static { try (InputStream input = AppConfig.class.getClassLoader().getResourceAsStream("config.properties")) { props.load(input); } catch (IOException ex) { ex.printStackTrace(); // 加载配置文件失败，抛出异常 throw new RuntimeException("Failed to load config file"); } } public static String getAppId() { return props.getProperty("app.id"); } public static String getAppSecret() { return props.getProperty("app.secret"); } public static String getTemplateId() { return props.getProperty("template.id"); } public static void main(String[] args) { System.out.println("APP_ID: " + AppConfig.getAppId()); System.out.println("APP_SECRET: " + AppConfig.getAppSecret()); System.out.println("TEMPLATE_ID: " + AppConfig.getTemplateId()); }}简洁一点

这是一个Java配置文件，用于读取一个名为config.properties的属性文件，该文件位于类路径下。在静态代码块中，使用InputStream读取属性文件，并将其加载到Properties对象中。然后，提供了三个public静态方法，分别返回app.id、app.secret和template.id的值。在main方法中，打印了这些值。

相关问题

Cannot resolve symbol 'JwtTokenProvider'在下面这段代码中，请帮我修改。import org.springframework.beans.factory.annotation.Autowired; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.http.HttpMethod; import org.springframework.security.config.annotation.web.builders.HttpSecurity; import org.springframework.security.config.annotation.web.builders.WebSecurity; import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity; import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter; import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder; import org.springframework.security.crypto.password.PasswordEncoder; import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter; @Configuration @EnableWebSecurity public class SecurityConfig extends WebSecurityConfigurerAdapter { @Autowired private JwtTokenProvider jwtTokenProvider; @Override protected void configure(HttpSecurity http) throws Exception { http.csrf().disable() .addFilterBefore(new JwtTokenFilter(jwtTokenProvider), UsernamePasswordAuthenticationFilter.class) .authorizeRequests() .antMatchers("/api/**").authenticated() .anyRequest().permitAll(); } @Override public void configure(WebSecurity web) throws Exception { web.ignoring().antMatchers(HttpMethod.OPTIONS, "/**"); } @Bean public PasswordEncoder passwordEncoder() { return new BCryptPasswordEncoder(12); } }

根据错误提示，你缺少了一个名为`JwtTokenProvider`的bean。你需要先创建一个`JwtTokenProvider`类，然后在配置类中注入它。下面是一个简单的示例：

import org.springframework.stereotype.Component;

@Component
public class JwtTokenProvider {
    // your implementation
}

接着，在配置类中添加`@Autowired`注解来注入`JwtTokenProvider`实例：

@Configuration
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    private JwtTokenProvider jwtTokenProvider;

    // your other configurations
}

这样就可以解决`Cannot resolve symbol 'JwtTokenProvider'`的问题了。

package com.aichen.socketwebchat.config; import org.springframework.boot.autoconfigure.websocket.servlet.WebSocketMessagingAutoConfiguration; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.web.socket.server.standard.ServerEndpointExporter; @Configuration public class SocketConfig extends WebSocketMessagingAutoConfiguration { @Bean public ServerEndpointExporter serverEndpointExporter(){ return new ServerEndpointExporter(); } }

这是一个关于 WebSocket 的配置文件，其中定义了一个 ServerEndpointExporter 的 Bean。这个 Bean 可以将带有 @ServerEndpoint 注解的类注册为 WebSocket 端点。