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  • springboot

    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>

<dependency>
    <groupId>org.apache.tomcat.embed</groupId>
    <artifactId>tomcat-embed-jasper</artifactId>
    <scope>provided</scope>
</dependency>
<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>jstl</artifactId>
</dependency>

</dependencies>
    View Code

    2）、application.properties

    spring.mvc.view.prefix=/WEB-INF/views/
spring.mvc.view.suffix=.jsp
server.error.whitelabel.enabled=false
server.error.include-stacktrace=always

    3）、java代码

    package com.ebc.controller;

import com.ebc.error.ForbiddenException;
import com.ebc.error.NotYetImplemented;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseStatus;

@Controller
public class MyController {
    /**
     * response status code=500，导航到5xx.jsp
     */
    @RequestMapping("/")
    public void handleRequest() {
        throw new RuntimeException("test exception");
    }
    /**
     * response status code=501，导航到5xx.jsp
     */
    @RequestMapping("/app")
    public void handleAppInfoRequest() throws NotYetImplemented {
        throw new NotYetImplemented("The request page is not yet implemented");
    }

    /**
     * response status code=403，因为没有403.jsp，因此会导航到error.jsp
     */
    @RequestMapping("/admin")
    public void handleAdminRequest() throws ForbiddenException {
        throw new ForbiddenException("The requested page is forbidden");
    }

    /**
     * 返回501，但是无法导航到5xx.jsp页面
     */
    @RequestMapping("/some")
    @ResponseStatus(HttpStatus.NOT_IMPLEMENTED)
    public void handleSomeRequest() {
    }
    /**
     * 返回501，但是无法导航到5xx.jsp页面
     */
    @RequestMapping("/some2")
    public ResponseEntity<?> handleSomeInfoRequest() {
        ResponseEntity<?> re = new ResponseEntity<>((Object)null, HttpStatus.NOT_IMPLEMENTED);
        return re;
    }
}

package com.ebc.error;

import org.springframework.http.HttpStatus;
import org.springframework.web.bind.annotation.ResponseStatus;

@ResponseStatus(HttpStatus.FORBIDDEN)
public class ForbiddenException extends Exception {
    public ForbiddenException(String message) {
        super(message);
    }
}


package com.ebc.error;

import org.springframework.http.HttpStatus;
import org.springframework.web.bind.annotation.ResponseStatus;

@ResponseStatus(HttpStatus.NOT_IMPLEMENTED)
public class NotYetImplemented extends Exception {
    public NotYetImplemented(String message) {
        super(message);
    }
}

    4）、5xx.jsp

    所有5开头的http状态返回码都会导航到该5xx.jsp。

    <%@ page language="java"
         contentType="text/html; charset=utf-8"
         pageEncoding="utf-8"%>
<html>
<head>
    <style>
        table td{
            vertical-align:top;
            border:solid 1px #888;
            padding:10px;
        }
    </style>
</head>
<body>
<h1>My 5xx Error Page</h1>
<table>
    <tr>
        <td>Date</td>
        <td>${timestamp}</td>
    </tr>
    <tr>
        <td>Error</td>
        <td>${error}</td>
    </tr>
    <tr>
        <td>Status</td>
        <td>${status}</td>
    </tr>
    <tr>
        <td>Message</td>
        <td>${message}</td>
    </tr>
    <tr>
        <td>Exception</td>
        <td>${exception}</td>
    </tr>
    <tr>
        <td>Trace</td>
        <td>
            <pre>${trace}</pre>
        </td>
    </tr>
</table>
</body>
</html>
    View Code

    5）、404.jsp

    只有404的返回码会导航到404.jsp

    <%@ page language="java"
         contentType="text/html; charset=utf-8"
         pageEncoding="utf-8"%>
<html>
<head>
    <style>
        table td{
            vertical-align:top;
            border:solid 1px #888;
            padding:10px;
        }
    </style>
</head>
<body>
<h1>My 404 Error Page</h1>
<table>
    <tr>
        <td>Date</td>
        <td>${timestamp}</td>
    </tr>
    <tr>
        <td>Error</td>
        <td>${error}</td>
    </tr>
    <tr>
        <td>Status</td>
        <td>${status}</td>
    </tr>
    <tr>
        <td>Message</td>
        <td>${message}</td>
    </tr>
    <tr>
        <td>Exception</td>
        <td>${exception}</td>
    </tr>
    <tr>
        <td>Trace</td>
        <td>
            <pre>${trace}</pre>
        </td>
    </tr>
</table>
</body>
</html>
    View Code

    6）、error.jsp（在views文件夹下，即application.properties 中的spring.mvc.view.prefix=/WEB-INF/views/）

    除了5xx、404外的所有状态码都会到航到error.jsp页面

    <%@ page language="java"
         contentType="text/html; charset=utf-8"
         pageEncoding="utf-8"%>
<html>
<head>
    <style>
        table td{
            vertical-align:top;
            border:solid 1px #888;
            padding:10px;
        }
    </style>
</head>
<body>
<h1>My Custom Global Error Page</h1>
<table>
    <tr>
        <td>Date</td>
        <td>${timestamp}</td>
    </tr>
    <tr>
        <td>Error</td>
        <td>${error}</td>
    </tr>
    <tr>
        <td>Status</td>
        <td>${status}</td>
    </tr>
    <tr>
        <td>Message</td>
        <td>${message}</td>
    </tr>
    <tr>
        <td>Exception</td>
        <td>${exception}</td>
    </tr>
    <tr>
        <td>Trace</td>
        <td>
            <pre>${trace}</pre>
        </td>
    </tr>
</table>
</body>
</html>
    View Code

    3、执行

    发现，没有导航到5xx.jsp，只是返回了501

      输入一个不存在的资源，导航到了404.jsp了。

    总结：

    views

    |_error.jsp【error.jsp一定存放在根下，即application.properties 中的spring.mvc.view.prefix=/WEB-INF/views/】

    |_error【其他错误页面一定存放在error目录下】

    　　|_5xx.jsp

    　　|_404.jsp
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  • 原文地址：https://www.cnblogs.com/yaoyuan2/p/11873110.html
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