springboot - 映射 /error 到自定义且实现了ErrorController的Controller

1、总览

2、代码

1）、pom.xml

<dependencies>

    <dependency>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-starter-web</artifactId>

    </dependency>

    <dependency>

        <groupId>org.projectlombok</groupId>

        <artifactId>lombok</artifactId>

        <optional>true</optional>

    </dependency>

    <dependency>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-starter-tomcat</artifactId>

        <scope>provided</scope>

    </dependency>

    <dependency>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-starter-test</artifactId>

        <scope>test</scope>

    </dependency>

</dependencies>

2）、application.properties

server.error.whitelabel.enabled=false

server.error.include-stacktrace=always

3）、MyController.java

import org.springframework.stereotype.Controller;

import org.springframework.ui.Model;

import org.springframework.web.bind.annotation.RequestMapping;

@Controller

public class MyController {

    @RequestMapping("/")

    public String handler (Model model) {

        throw new RuntimeException("test exception");

    }

}

4）、MyCustomErrorController.java

import org.springframework.boot.web.servlet.error.ErrorController;

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.ResponseBody;

import javax.servlet.http.HttpServletRequest;

/**

 * @author www.gomepay.com

 * @date 2019/11/18

 */

@Controller

public class MyCustomErrorController implements ErrorController {

    @RequestMapping("/error")

    @ResponseBody

    public String handleError(HttpServletRequest request) {

        Integer statusCode = (Integer) request.getAttribute("javax.servlet.error.status_code");

        Exception exception = (Exception) request.getAttribute("javax.servlet.error.exception");

        return String.format("<html><body><h2>Error Page</h2><div>Status code: <b>%s</b></div>"

                        + "<div>Exception Message: <b>%s</b></div><body></html>",

                statusCode, exception==null? "N/A": exception.getMessage());

    }

    @Override

    public String getErrorPath() {

        return "/error";

    }

}

3、执行

巴特西

springboot - 映射 /error 到自定义且实现了ErrorController的Controller

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