基于Spring 4.x Java代码的配置:静态资源文件和Dispatcher servlet

Question

在Servlet3.0之前，所有配置都是基于xml的。我目前正在使用基于代码/注释的配置。

在xml样式配置中，我们有

<mvc:resources mapping="/res/**" location="/res/" />

如何将其转换为基于代码的配置？我不断收到来自eclipse调试控制台的错误，即没有为资源文件找到dispatcher servlet。

顺便说一句，这是我的参考资料，从SpringSecurity3.x迁移到4.x (Java配置)

初始化器

public class AppInitializer extends
        AbstractAnnotationConfigDispatcherServletInitializer {

    @Override
    protected Class<?>[] getRootConfigClasses() {
        return new Class[] { SecurityConfig.class };
    }

    @Override
    protected Class<?>[] getServletConfigClasses() {
        return new Class[] { MvcConfig.class };
    }

    @Override
    protected String[] getServletMappings() {
        return new String[] { "/" };
    }
}

mvc配置

@EnableWebMvc
@ComponentScan({ "com.appname.controller" })
public class MvcConfig {
    @Bean
    public InternalResourceViewResolver viewResolver() {
        InternalResourceViewResolver resolver = new InternalResourceViewResolver();
        resolver.setPrefix("/WEB-INF/jsp/");
        resolver.setSuffix(".jsp");
        return resolver;
    }
}

安全配置

@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true, jsr250Enabled = true)
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    public void configureGlobal(AuthenticationManagerBuilder auth)
            throws Exception {
        auth.inMemoryAuthentication().withUser("user").password("password")
                .roles("USER");
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests()
            .antMatchers("/res/**").permitAll()
            .and().authorizeRequests()
            .anyRequest().hasRole("USER")
            .and().formLogin().loginPage("/account/signin").permitAll()
            .and().logout().permitAll();
    }
}

安全初始化器

public class SecurityInitializer extends
        AbstractSecurityWebApplicationInitializer {

}

自定义登录

public class CustomUserDetailsService implements UserDetailsService {

    private AccountRepository accountRepository;

    public CustomUserDetailsService() {
        this.accountRepository = new AccountRepository();
    }

    @Override
    public UserDetails loadUserByUsername(String email)
            throws UsernameNotFoundException {

        Account account = accountRepository.getAccountByEmail(email);

        if (account == null) {
            throw new UsernameNotFoundException("Invalid email/password.");
        }

        Collection<GrantedAuthority> authorities = new ArrayList<GrantedAuthority>();
        authorities.add(new SimpleGrantedAuthority("USER"));

        return new User(account.getEmail(), account.getPassword(), authorities);
    }
}

Answer 1

您可以从WebMvcConfigurerAdapter扩展并重写addResourceHandlers方法。

@EnableWebMvc
@ComponentScan({"com.appname.controller"})
public class MvcConfig extends WebMvcConfigurerAdapter {

    @Bean
    public InternalResourceViewResolver viewResolver() {
        InternalResourceViewResolver resolver = new InternalResourceViewResolver();
        resolver.setPrefix("/WEB-INF/jsp/");
        resolver.setSuffix(".jsp");
        return resolver;
    }

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry
                .addResourceHandler("/res/**")
                .addResourceLocations("/res/");
    }
}