springboot 全局异常拦截器，友好异常提示

迈不过友情╰ 2022-08-31 09:44 5阅读 0赞

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
                            	
                            }
                        }
    				});