springboot 全局异常拦截器，友好异常提示

1. 添加config 配置类

package org.fh.config;


import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.HandlerExceptionResolver;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.view.json.MappingJackson2JsonView;

/**
 * 说明：错误异常拦截处理
 * 作者：FH Admin
 * from fhadmin.cn
 */
@Configuration
public class ExceptionConfiguration implements HandlerExceptionResolver {

	@Override
	public ModelAndView resolveException(HttpServletRequest request, HttpServletResponse response, Object handler,
			Exception ex) {
		ModelAndView mv = new ModelAndView(new MappingJackson2JsonView());	//返回json
		
		String exInfo = ex.toString().replaceAll("\n", "<br/>");
		
		boolean status = exInfo.contains("Subject does not have permission");
		
		if(status){
			exInfo = "[没有此页面的访问权限]" + exInfo;
        }else {
        	System.out.println("==============异常开始=============");
    		ex.printStackTrace();
    		System.out.println("==============异常结束=============");
        }
		mv.addObject("exception", exInfo);
		mv.addObject("result", "exception");
		
		return mv;
	}
	
}

 

2.  在逻辑类的方法上抛出异常 throws Exception，比如  

	/**删除
	 * @param out
	 * @throws Exception
	 */
	@RequestMapping(value="/delete")
	@RequiresPermissions("autograph:del")
	@ResponseBody
	public Object delete() throws Exception{
		Map<String,String> map = new HashMap<String,String>();
		String errInfo = "success";
		//xxxx
		map.put("result", errInfo);				//返回结果
		return map;
	}

 

3. 前端页面接收异常结果

            //发送 post 请求提交保存
            $.ajax({
	            	xhrFields: {
	                    withCredentials: true
	                },
					type: "POST",
					url: httpurl+'xxxx/delete',
			    	data: {tm:new Date().getTime()},
					dataType:"json",
					success: function(data){
                        if("success" == data.result){
                        	
                        }else if ("exception" == data.result){
                        	alert("模块异常"+data.exception);//显示异常
                        	
                        }
                    }
				});