package bjsxt.exception;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.handler.SimpleMappingExceptionResolver;

import java.util.Properties;

/**
 * Created by Administrator on 2019/2/14.
 * 全局异常处理类,使用SimpleMappingExceptionResolver 做全局异常处理
 * 优点：直接在一个方法里对需要处理的异常跳转不同的视图，比较简单方便
 * 缺点：无法把错误信息传递到视图层
 */

@Configuration
public class GlobalException {

    /**
     *
     * @return
     */
    @Bean
    public SimpleMappingExceptionResolver getSimpleMappingExceptionResolver(){
        SimpleMappingExceptionResolver resolver=new SimpleMappingExceptionResolver();
        Properties properties=new Properties();
        /**
         * 参数一：异常的类型，注意必须是异常类型的全名
         * 参数二：视图名称
         */
        properties.put("java.lang.ArithmeticException","error_arithmetic");
        properties.put("java.lang.NullPointerException","error_nullPointer");
        resolver.setExceptionMappings(properties);
        return resolver;
    }

}