SpringBoot 全局异常配置及返回自定义页面

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1. 全局异常的配置

---

1. 创建异常处理类

package com.test.spring_boot_demo.domain;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import javax.servlet.http.HttpServletRequest;
import java.util.HashMap;
import java.util.Map;

@RestControllerAdvice
public class CustomExtHandler {

     private static final Logger LOG = LoggerFactory.getLogger(CustomExtHandler.class);

    //  捕获全局异常，处理所有不可知的异常
    @ExceptionHandler(value = Exception.class)
    // @ResponseBody
   Object handleException(Exception e, HttpServletRequest request) {
        LOG.error("url {}, msg {}", request.getRequestURL(), e.getMessage());
        Map map = new HashMap<>();
        map.put("code", "100");
        map.put("msg", e.getMessage());
        map.put("url", request.getRequestURL());
        return map;
    }

}

• 使用 @RestControllerAdvice 注解，可以不需要 @ResponseBody 注解

2. 创建controller接口

@GetMapping("/test/exception")
public Object testException() {
    int n = 1/0;
    return "test exception";
}

3. 访问测试

• 浏览器访问地址

  http://localhost:8080/test/exception
  

• 返回结果

  {"msg":"/ by zero","code":"100","url":"http://localhost:8080/test/exception"}
  

2. 触发异常返回自定义页面

---

1. 官网介绍

• 官方地址

2. 添加模板引擎依赖

	org.springframework.boot
	spring-boot-starter-thymeleaf

3. 添加自定义异常类

package com.test.spring_boot_demo.domain;

public class MyException extends RuntimeException {

    private String code;
    private String msg;

    public MyException(String code, String msg) {
        this.code = code;
        this.msg = msg;
    }

    public String getCode() {
        return code;
    }

    public void setCode(String code) {
        this.code = code;
    }

    public String getMsg() {
        return msg;
    }

    public void setMsg(String msg) {
        this.msg = msg;
    }
}

4. 添加自定义异常监听器

@ExceptionHandler(value = MyException.class)
Object handleMyException(MyException e) {
    ModelAndView modelAndView = new ModelAndView();
    modelAndView.setViewName("error.html");
    modelAndView.addObject("msg", e.getMessage());
    return modelAndView;
}

5. 添加Http请求接口

@GetMapping("/test/myexception")
public Object myexc() {
    throw new MyException("500", "my ext 异常");
}

6. 测试

• 测试：浏览器访问

  http://localhost:8080/test/myexception
  

• 结果：跳转到新的页面

  出异常 template
  

转载于:https://my.oschina.net/shadowolf/blog/1841537