springboot 拦截器注入为空

曾经终败给现在 2022-03-17 16:18 237阅读 0赞

springboot 拦截器中使用 @Autowired 注入为空，解决办法如下

拦截器配置类

package com.fin.interceptor;
    
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
    import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
    
    @Configuration
    public class MyWebConfig extends WebMvcConfigurerAdapter {
    	
    	@Bean
    	public AppCheckLoginInterceptor appCheckLoginInterceptor() {
    		return new AppCheckLoginInterceptor();
    	}
    
    	@Override
    	public void addInterceptors(InterceptorRegistry registry) {
    		
    		registry.addInterceptor(appCheckLoginInterceptor()).
    		addPathPatterns("/app/**");
    	}
    
    	
    }

拦截器类

package com.fin.interceptor;
    
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.web.servlet.HandlerInterceptor;
    import org.springframework.web.servlet.ModelAndView;
    import com.alibaba.fastjson.JSONObject;
    import com.financeloan.app.mapper.UserMapper;
    
    public class AppCheckLoginInterceptor implements HandlerInterceptor{
    	
    	@Autowired
    	private UserMapper userMapper;
    
    	@Override
    	public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
    			throws Exception {
    		
    		return true;
    	}
    
    }