Springboot统一处理异常

package com.example.chapter10_6.controller;

import org.springframework.boot.web.servlet.error.ErrorController;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class CommonErrorController implements ErrorController {
	private final String ERROR_PATH = "/error";
	@Override
	public String getErrorPath() {
		// TODO Auto-generated method stub
		return ERROR_PATH;
	}
	@RequestMapping(value = ERROR_PATH)
	public String handleError() {
		System.out.println(getErrorPath());
		return "error";
	}

}

package com.example.chapter10_6.controller;

import java.util.Map;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class TestController {
	 @SuppressWarnings({ "rawtypes", "null" })
	@GetMapping("/index")
	    public String index(){
	        Map map = null;
	        map.get("test");
	        return "index";
	    }
}

package com.example.chapter10_6.main;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;

@SpringBootApplication
@ComponentScan(basePackages = {"com.example.chapter10_6.controller"})
public class Chapter116Application {

	public static void main(String[] args) {
		SpringApplication.run(Chapter116Application.class, args);
	}

}